Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 3042. Отображено 100.
07-06-2012 дата публикации

Method for the Electrochemical Machining of a Workpiece

Номер: US20120138480A1
Автор: Johannes Schreiner, Michael Riester, Patrick Matt
Принадлежит: Kennametal Inc

The invention relates to a method for electrochemical processing of at least one workpiece, comprising at least the following steps: a) setting a first flow density during a first phase in an electrolyte, b) retaining the first flow density during a second phase following the first phase, c) increasing the first flow density during a third phase following the second phase to a second flow density at least 30% greater than the first flow density, and d) reducing the second flow density during a fourth phase following the third phase within a maximum of 100 microseconds to a maximum of 1% of the second flow density.

Подробнее
Номер записи: 1
15-11-2012 дата публикации

Tool adapter assembly and machining system

Номер: US20120285820A1
Автор: Bin Wei, Hongtao Li, Renwei Yuan, Steven Robert Hayashi, Xiaobin Chen, Yuanfeng Luo
Принадлежит: General Electric Co

A machining system is provided and includes a machining tool comprising a spindle, one or more electrodes configured to perform the electromachining, and one or more tool holding elements configure to conductively hold the respective one or more electrodes and be assembled onto the spindle of the machining tool. The machining system further comprises one or more adapters and one or more power sources configured to electrically connect to the respective one or more adapters and the workpiece. The one or more adapters are configured to conductively contact the respective one or more tool holding elements. Further, the machining system comprises one or more machining solution sources provided to pass one or more machining solutions between the workpiece and the respective one or more electrodes. A tool adapter assembly is also presented.

Подробнее
Номер записи: 2
25-04-2013 дата публикации

Method and Apparatus for a Porous Metal Electrospray Emitter

Номер: US20130098774A1
Автор: JR. Robert Scott, Legge, Lozano Paulo
Принадлежит: Massachusetts Institute of Technology

An ionic liquid ion source can include a microfabricated body including a base and a tip. The microfabricated body can be formed of a porous metal compatible (e.g., does not react or result in electrochemical decaying or corrosion) with an ionic liquid or a room-temperature molten salt. The microfabricated body can have a pore size gradient that decreases from the base of the body to the tip of the body, so that the ionic liquid can be transported through capillarity from the base to the tip. 1. An ionic liquid ion source comprising:a microfabricated body comprising a base and a tip and formed of a porous metal compatible with at least one of an ionic liquid, or room-temperature molten salt; andwherein the microfabricated body has a pore size gradient that decreases from the base of the body to the tip of the body, such that the ionic liquid is capable of being transported through capillarity from the base to the tip.2. The ion source of wherein the ionic liquid is capable of being continuously transported through capillarity from the base to the tip.3. The ion source of wherein the body is a cylindrical needle.4. The ion source of wherein the body is a flat ribbon-like needle.5. The ion source of wherein the tip is formed by electrochemical etching.6. The ion source of wherein the porous metal is at least one of tungsten claim 1 , nickel claim 1 , magnesium claim 1 , molybdenum or titanium.7. The ion source of wherein a radius of curvature of the tip is approximately 1-20 μm.8. An ionic liquid ion source comprising:a plurality of emitters microfabricated from a porous metal compatible with at least one of an ionic liquid, or room-temperature molten salt; andwherein each emitter has a pore size gradient that decreases from the base of the emitter to the tip of the emitter, such that the ionic liquid is capable of being transported through capillarity from the base to the tip of each emitter.98. The ion source of clam wherein the ionic liquid is capable of being ...

Подробнее
Номер записи: 3
30-05-2013 дата публикации

Metallic component for high-pressure applications

Номер: US20130134052A1
Автор: Arnold Gente, Chris Burger
Принадлежит: ROBERT BOSCH GMBH

A metallic component ( 1 ) for high-pressure applications, which serves in particular for fuel injection systems of air-compressing, self-igniting internal combustion engines, comprises at least one transition region ( 2 ). The transition region ( 2 ) is re-worked here after a hardening operation. The re-working is performed by electrochemical removal and mechanical removal, in particular honing.

Подробнее
Номер записи: 4
20-06-2013 дата публикации

METHOD FOR FORMING ANODIZED LAYER AND MOLD PRODUCTION METHOD

Номер: US20130153537A1
Автор: HAYASHI Hidekazu, Isurugi Akinobu, Minoura Kiyoshi, Nakamatsu Kenichiro
Принадлежит: SHARP KABUSHIKI KAISHA

An anodized layer formation method includes: providing an aluminum film provided on a support or an aluminum base; and forming a porous alumina layer which has minute recessed portions by applying a voltage between an anode which is electrically coupled to a surface of the aluminum film or the aluminum base and a cathode which is provided in an electrolytic solution with the surface of the aluminum film or the aluminum base being in contact with the electrolytic solution. The forming of the porous alumina layer includes increasing the voltage to a target value and, before the voltage is increased to the target value, increasing the voltage to a first peak value which is lower than the target value and thereafter decreasing the voltage to a value which is lower than the first peak value. As such, an anodized layer with reduced variation of recessed portions can be formed. 1. A method for manufacturing a mold which has an inverted moth-eye structure over its surface , the inverted moth-eve structure having a plurality of minute recessed portions whose two-dimensional size viewed in a direction normal to the surface is not less than 10 nm and less than 500 nm , the method , comprising the steps of:providing an aluminum film provided on a support or an aluminum base;a step of forming a porous alumina layer which has minute recessed portions by means of anodization by applying a voltage between an anode which is electrically coupled to a surface of the aluminum film or the aluminum base and a cathode which is provided in an electrolytic solution with the surface of the aluminum film or the aluminum base being in contact with the electrolytic solution; andan etching step after the porous alumina layer is formed, in which the porous alumina layer is brought into contact with an etching solution such that the minute recessed portions are enlarged, increasing the voltage to a target value, and', 'before the voltage is increased to the target value, increasing the voltage to ...

Подробнее
Номер записи: 5
25-07-2013 дата публикации

ELECTROCHEMICAL MACHINING METHOD AND APPARATUS

Номер: US20130186773A1
Автор: McPhillips Richard B.
Принадлежит: Harvest Precision Components, Inc.

Electrochemical machining method and apparatus wherein in one aspect of the invention, the machining voltage is selected to maintain the highest current without initiating substantial hydrolysis of the electrolyte flushed between the work piece anode and tool cathode. In another aspect of the invention, the Low Machining Potential Voltage (LPMV) and High Machining Potential Voltage (HMPV) for a particular work piece material are identified and the work piece is machined using a voltage at or between the LMPV and HMPV. In yet another aspect of the invention, direct perturbation of the Beta Insulating Layer (BIL) is carried out in an optimally small (between about near zero to about 100 inter-electrode gap (IEG) with constant and simultaneous pulling in and pushing out of the electrolyte through the IEG. 1. A method for electrochemical machining of an electrically conductive work piece , said method comprising the steps of:a) providing a work piece comprising an anode, a tool comprising a cathode, and an electrolyte, said cathode positioned in spaced relation to said work piece with said electrolyte directed therebetween in a continuously flushing manner during the machining process wherein said machining produces non-gaseous, ionic by-products of dissolution which form a Beta Insulating Layer on said work piece;b) applying a voltage between the work piece and cathode, said voltage selected to obtain a current between said work piece and said cathode which is maximized without initiating substantial hydrolysis of said electrolyte; andc) perturbing and removing the Beta Insulating Layer into solution with said electrolyte with one of said cathode and/or said work piece.2. The method of wherein said work piece and said tool are spaced by a distance of between about 0 to 10.0 μm claim 1 , said spacing being maintained substantially constant during said machining process.3. The method of wherein said work piece and said tool are spaced by a distance of between about 0 to ...

Подробнее
Номер записи: 6
19-09-2013 дата публикации

PROCESS FOR REMOVING A COATING FROM WORKPIECES

Номер: US20130240373A1
Автор: Kostner Mirco Elias, Rauch Udo
Принадлежит: OERLIKON TRADING AG, TRUBBACH

The invention relates to a process for electrochemically removing a coating from coated workpieces by means of a voltage applied in an electrolyte bath between the workpiece and a counter-electrode. According to the invention, a rising voltage profile is selected during the coating removal process. This has the effect that the voltage applied at the start is low, and therefore the workpieces are not damaged, but nevertheless the rise in the voltage prevents the coating removal process taking an uneconomically long time. 1. Process for removing a coating from workpieces having an electrically non-conducting surface , wherein the process is carried out by means of an electrolyte and includes the following steps:preparing a tank, wherein inside the tank an electrode that can be connected to one pole of a power supply device is providedfilling an electrolyte into the tank, so that the electrode comes into contact with the electrolyteimmersing one or several workpieces into the electrolyteapplying a voltage between the workpiece and the electrode for an at least partial removal of the workpiece's coatingcharacterized in that the voltage during the at least partial coating removal is adjusted in such a way that at a first point in time a first voltage is applied and at a later point in time a voltage is applied that is higher than the first voltage and which does not result in the formation of holes, wherein the application of the higher second voltage at the first point in time would have resulted in the formation of holes.2. Process according to claim 1 , characterized in that the voltage during the at least partial removal of the coating is adjusted in such a manner that the value of the difference of potential between the electrode and the workpiece increases continuously and/or incrementally.3. Process according to claim 1 , characterized in that the difference of potential during the at least partial removal of the coating rises monotonously claim 1 , preferably ...

Подробнее
Номер записи: 7
09-01-2014 дата публикации

METHOD AND DEVICE FOR THE ELECTROCHEMICAL MACHINING OF WORK PIECES

Номер: US20140008241A1
Автор: Günther Oliver, HÖG Thomas, KONIETZNI Hans-Joachim
Принадлежит: STOBA SONDERMASCHINEN GMBH

The invention refers to a method for the electrochemical machining of work pieces, such as, for example, nozzles, in particular nozzles with a blind hole. The invention also refers to a device for the electrochemical machining of work pieces. 1. Method for electrochemical machining of work pieces with an electrolyte liquid of nozzles with a blind hole , wherein a relative movement as a rotary movement is provided during the machining between a work piece and a cathode , wherein a rotary direction of cathode and tool in the same or opposite direction is provided.2. Method according to claim 1 , wherein the work piece is clamped by means of a clamping device in a device and poled as anode claim 1 , wherein the blind hole points to a cathode roughly adapted to the contour of the work piece or the hole to be machined claim 1 , after that the cathode is centered in the blind hole claim 1 , and an electrolyte liquid is conducted to the tip of the cathode in at least one flow channel provided in the cathode claim 1 , where it is channeled out on the side in the direction to the surface to be machined claim 1 , and the work piece and the cathode are set in a rotary motion while at the same time electrolyte liquid and current is/are applied.3. Method according to claim 1 , wherein the electrolyte liquid on the side at the tip of the in particular pin-shaped cathode and bent with reference to the symmetric axis of the cathode tip is guided to the surface to be machined claim 1 , and is spread there in particular evenly claim 1 , the electrolyte liquid is guided to the bottom of the blind hole claim 1 , in order to machine the blind hole head surface claim 1 , wherein the cathode and the work piece rotate with a speed of 20 to 40 rotations per minute.4. Method according to claim 1 , wherein a machining period of 2 to 30 seconds claim 1 , preferably 5 seconds claim 1 , and/or in that the surface to be machined is impinged with 30 to 180 ampere seconds.5. Method according to ...

Подробнее
Номер записи: 8
06-02-2014 дата публикации

ELECTROCHEMICAL MACHINING TOOLS AND METHODS

Номер: US20140034513A1
Автор: Choi Seung-Woo, Holmes James Bradford, TRIMMER Andrew Lee
Принадлежит: GENERAL ELECTRIC COMPANY

An electrochemical machining tool and method capable of rounding sharp edges that may be prone to cracking, for example, edge regions of cooling slots within dovetail slots of turbine wheels. The electrochemical machining tool includes an electrode and is secured to the component. The electrode of the electrochemical machining tool is inserted into a first slot, an electrolyte solution is applied between the electrode of the electrochemical machining tool and a second slot that intersects the first slot, an electrical potential is applied to the electrode and the turbine wheel to create a potential gradient between the electrode and the edge of the second slot, and material is removed from the edge of the second slot by displacing the electrode about and along the edge. 1. A method of rounding an edge of a first slot within at least a second slot of a component , the method comprising:providing an electrochemical machining tool comprising an electrode;securing the electrochemical machining tool to the component;inserting the electrode into the second slot;applying an electrolyte solution between the first slot and the electrode;applying the electrical potential to the electrode and the component to create a potential gradient between the electrode and the edge of the first slot; andremoving material from the edge of the first slot by displacing the electrode about and along the edge.2. The method according to claim 1 , further comprising blending the edge to a contoured radius using the electrochemical machining tool.3. The method according to claim 2 , wherein the contoured radius is about 0.76 micrometers to about 2.3 micrometers.4. The method according to further comprising mechanically removing at least a portion of the edge of the first slot prior to removing material using the electrode of the electrochemical machining tool.5. The method according to claim 4 , wherein the electrochemical machining tool comprises an electrochemical grinding tool.6. The method ...

Подробнее
Номер записи: 9
13-03-2014 дата публикации

MACHINE FOR ELECTROCHEMICAL METAL MACHINING

Номер: US20140069809A1
Автор: Laun Jochen, Noller Alexander
Принадлежит:

The invention relates to a machine for electrochemical metal machining, wherein metal is removed by electrolytic dissolution of the workpiece (), comprising a frame (), with a work holder (), wherein a workpiece () is mounted in the work holder () in such a way that it can be rotationally driven under numerical control about a vertical spindle axis () and a horizontal axis of rotation (), with at least one tool (), which can be infed to the workpiece (), wherein the workpiece () is positively poled as an anode and the tool () is negatively poled as a cathode, wherein the work holder () is guided movably in a controlled manner in relation to the frame () in a horizontal direction on the horizontal slide () along Y guides () and in a vertical direction with the spindle () along the Z guide (), and the tool () can be moved in a horizontal direction on the infeed slide () along the X guide () on the frame (). 18-. (canceled)9. An apparatus for electrochemical machining a workpiece , the apparatus comprising:a frame;a slide movable horizontally on the frame;a drive movable vertically on the slide;a workpiece holder adapted to hold a workpiece and rotatable on the drive about a vertical axis and a horizontal axis;a tool support movable horizontally on the frame; anda tool carried on the support and engageable with the tool, whereby, with opposite electrical polarization of the tool and the workpiece, material can be electrochemically dissolved from the workpiece.10. The electrochemical-machining apparatus defined in wherein the slide is movable horizontally on the frame in a first direction and the tool support is movable horizontally on the frame in a second direction substantially perpendicular to the first direction.11. The electrochemical-machining apparatus defined in claim 10 , wherein the frame has a horizontal top face and a vertical front face claim 10 , the apparatus further comprising:a Y guide on the top face, extending in the first direction, and carrying the ...

Подробнее
Номер записи: 10
20-03-2014 дата публикации

ELECTROCHEMICAL ETCHING APPARATUS

Номер: US20140076738A1
Автор: Guo Lian, Han Shu-Jen, Li Xuesong
Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

An electroplating etching apparatus includes a power supply to output current, and a container configured to contain an electrolyte. A cathode is coupled to the container and configured to fluidly communicate with the electrolyte. An anode is electrically connected to the output, and includes a graphene layer. A metal substrate layer is formed on the graphene layer, and is etched from the graphene layer in response to the current flowing through the anode. 1. An electrochemical etching method , comprising:forming an anode having a graphene layer formed on a metal substrate layer;disposing the metal substrate layer in an electrolyte;disposing a cathode being electrically connected to a power source in the electrolyte; andconnecting at least one of the graphene layer and the metal substrate layer to the power source to supply a current through the anode and the electrolyte such that the metal substrate layer is etched from the graphene layer.2. The electrochemical etching method of claim 1 , wherein the forming an anode further comprises coupling a metal plate to the graphene layer claim 1 , the metal plate having a first portion in electrical communication with the output of the power supply to receive the current.3. The electrochemical etching method of claim 2 , further comprising forming an electrically conductive polymer to the graphene layer for coupling the metal plate to the graphene layer.4. The electrochemical etching method of claim 3 , wherein the current density at the anode ranges from 2-200 mA/cm.5. The electrochemical etching method of claim 4 , further comprising forming the metal substrate layer from copper (Cu).6. The electrochemical etching method of claim 1 , wherein the electrolyte is a solution of sulfuric acid (HSO).7. The electrochemical etching method of claim 1 , wherein the electrolyte is a solution comprising chloride (Cl) and an electrolyte metal.8. The electrochemical etching method of further comprising matching the electrolyte metal to ...

Подробнее
Номер записи: 11
01-01-2015 дата публикации

METHODS AND SYSTEMS FOR ELECTROCHEMICAL MACHINING OF AN ADDITIVELY MANUFACTURED COMPONENT

Номер: US20150001093A1
Автор: Carter William Thomas, Deaton, Fornasiero Michael John, JR. John Broddus, TRIMMER Andrew Lee
Принадлежит:

A method of manufacturing a component comprises forming a component on a conductive build plate. The component defines at least one access port and includes an inner surface that defines at least one internal passage. The method further includes forming at least one electrode within the at least one internal passage, wherein the at least one electrode is electrically isolated from the component. An electromotive force is applied to the at least one electrode to facilitate smoothing the inner surface.

Подробнее
Номер записи: 12
07-01-2016 дата публикации

Electrochemical Machining Process

Номер: US20160001386A1
Автор: McPhillips Richard B.
Принадлежит: Harvest Precision Components, Inc.

Electrochemical machining method and apparatus wherein in one aspect of the invention, the machining voltage is selected to maintain the highest current without initiating substantial hydrolysis of the electrolyte flushed between the work piece anode and tool cathode. In another aspect of the invention, the Low Machining Potential Voltage (LPMV) and High Machining Potential Voltage (HMPV) for a particular work piece material are identified and the work piece is machined using a voltage at or between the LMPV and HMPV. In yet another aspect of the invention, direct perturbation of the Beta Insulating Layer (BIL) is carried out in an optimally small (between about near zero to about 10μ) inter-electrode gap (IEG) with constant and simultaneous pulling in and pushing out of the electrolyte through the IEG. 1. A method of electrochemical machining comprising the steps of:a) providing a work piece anode, a tool comprising a cathode, and an electrolytic fluid positioned between said cathode and said anode for continuous flushing of non-gaseous ionic byproducts during the machining process which form a Beta Insulating Layer (BIL) on said work piece;b) applying a voltage selected to obtain a maximized current between said work piece and said cathode without initiating substantial hydrolysis of said electrolyte; andc) perturbing and removing the BIL into solution.2. The method of wherein said work piece anode and said tool are spaced at a substantially constant distance of about from 0 to 10 μm apart during said machining process.35-. (canceled)6. The method of further comprising the step of perturbing the Beta Insulating Layer (BIL) by moving said tool.7. The method of wherein said BIL is perturbed by moving said tool at a rate of about 0.1 to about 80 Meters Per Second (MPS).8. (canceled)9. The method of wherein said BIL is perturbed by moving said tool is perturbed at a rate of about 0.1 to about 20 MPS.10. The method of wherein said BIL is perturbed by moving said tool ...

Подробнее
Номер записи: 13
04-01-2018 дата публикации

DRILLING TOOL FOR USE IN MACHINING A CONDUCTIVE WORK PIECE

Номер: US20180001406A1
Автор: Rutkowski Stephen Francis, TRIMMER Andrew Lee
Принадлежит:

A drilling tool for use in machining a conductive work piece that includes a forward electrode tip including an outer radial portion and an inner radial portion. The outer radial portion includes a forward face, and the inner radial portion extends from the forward face of the outer radial portion. The drilling tool further includes a dielectric sheath that extends circumferentially about the outer radial portion, at least one side electrode coupled to the dielectric sheath, and a protective sheath that extends circumferentially about the dielectric sheath. An opening is defined in the protective sheath such that the at least one side electrode is at least partially exposed. 1. A drilling tool for use in machining a conductive work piece , said drilling tool comprising:a forward electrode tip comprising an outer radial portion and an inner radial portion, said outer radial portion comprising a forward face, and said inner radial portion extending from said forward face of said outer radial portion;a dielectric sheath that extends circumferentially about said outer radial portion;at least one side electrode coupled to said dielectric sheath; anda protective sheath that extends circumferentially about said dielectric sheath, wherein an opening is defined in said protective sheath such that said at least one side electrode is at least partially exposed.2. The drilling tool in accordance with claim 1 , wherein said protective sheath is fabricated from a dielectric material.3. The drilling tool in accordance with claim 1 , wherein said protective sheath is fabricated from one of a silicone rubber material or a polyester material.4. The drilling tool in accordance with claim 3 , wherein the polyester material is modified to include a strengthening additive.5. The drilling tool in accordance with claim 1 , wherein said opening is undersized relative to said at least one side electrode.6. The drilling tool in accordance with claim 1 , wherein at least a portion of said ...

Подробнее
Номер записи: 14
08-01-2015 дата публикации

METHOD FOR FABRICATING MICROCHANNELS IN FLUID COOLED COMPONENTS

Номер: US20150008140A1
Автор: Lacy Benjamin Paul, Wei Bin
Принадлежит:

A method for manufacturing a microchannel cooling passage in a surface of a machine component that includes: forming an elongated open channel in the surface of the machine component, the open channel comprising a cross-sectional profile having a mouth and a floor, and, defined therebetween, a middle region; inserting a corresponding elongated electrode having a directional bias into the channel; and using the electrode as a tooling piece in an electrochemical machining process, widening the middle region of the open channel. 1. A method for manufacturing a microchannel cooling passage in a surface of a machine component , the method comprising:forming an elongated open channel in the surface of the machine component, the open channel comprising a cross-sectional profile having a mouth and a floor, and, defined therebetween, a middle region;inserting a corresponding elongated electrode having a directional bias into the channel; andusing the electrode as a tooling piece in an electrochemical machining process, widening the middle region of the open channel.2. The method according to claim 1 , wherein the middle region of the open channel comprises opposing sidewalls;wherein the electrode comprises a cross-sectional profile that, upon insertion into the open channel, includes a proximal end residing at the mouth, a distal end residing at the floor, and opposite side surfaces that extend therebetween; andwherein the cross-sectional profile of the directionally biased electrode comprises at least one exposed region and one insulated region.3. The method according to claim 2 , wherein the exposed region comprises one in which an electrical conducting surface of the electrode is not covered by an electrically insulating material claim 2 , and the insulated region comprises one in which an electrically insulating material covers the electrical conducting surface of the electrode;wherein the at least one insulated region comprises the proximal end and the distal end of the ...

Подробнее
Номер записи: 15
12-01-2017 дата публикации

FUEL-INJECTION METERING DEVICE, FUEL-INJECTION NOZZLE, MOULD FOR PRODUCING A FUEL-INJECTION METERING DEVICE AND METHOD FOR PRODUCING A FUEL-INJECTION METERING DEVICE

Номер: US20170009725A1
Автор: GÜNTHER Markus, Günther Oliver, HÖG Thomas, KONIETZNI Hans-Joachim, LEICHTLE Matthias, PFENDTNER Klaus, WAGNER Ulrich
Принадлежит:

The present application concerns a fuel-injection metering device for a motor vehicle. The fuel-injection device include a main body with at least one through-hole, whereby the main body forms a valve seat on its inner face that is provided to interact with a valve body, whereby the inner face of the main body is electrochemically machined. The application also concerns a mould, a production method, and a fuel-injection nozzle. 1. Fuel-injection metering device for a motor vehicle which comprises a main body with at least one through-hole , whereby the main body forms a valve seat on its inner face which is provided to interact with a valve body in order to seal and open the through-hole , and whereby several longitudinal grooves extending in a radial direction are provided on the inner face of the main body which are separated by ridges and the inner face of the main body is electrochemically machined , characterized in that the ridges are electrochemically rounded in the transition area to the longitudinal grooves).2. Fuel-injection metering device according to claim 1 , characterized in that one or more longitudinal grooves extending in a radial direction are provided on the inner face of the main body by means of an electrochemical machining method.3. Fuel-injection nozzle with a fuel-injection metering device according to claim 1 , and a valve body which is axially movable inside it in the manner of a sphere or in the manner of a tappet with a preferably round claim 1 , concave claim 1 , spherical or sphere-section-like shape at the tip.4. Fuel-injection nozzle according to claim 3 , characterized in that the main body of the fuel-injection metering device is inserted in the end of a valve sleeve in a firmly bonded claim 3 , positive-locking or force-fitting manner.5. Fuel-injection nozzle according to claim 3 , characterized in that the valve body shaped as a sphere is of a separate material from a needle which can be brought into contact with it as necessary ...

Подробнее
Номер записи: 16
03-02-2022 дата публикации

METHOD FOR PRODUCING A PLATE OF A TURBOMACHINE

Номер: US20220032384A1
Автор: BUSSMANN Martin, Feiling Nicole, Gerloff Steffen, HUBER NORBERT, Klingels Hermann, Kuepper Anna Carina, PLATZ Albin
Принадлежит: MTU Aero Engines AG

The present invention relates to a method for manufacturing a plate of a turbomachine having a plurality of receiving grooves, which are formed on the cylindrical peripheral surface of the plate in order to receive blade roots of blades of the turbomachine. The receiving grooves extend in a straight line from one face of the plate to the other face of the plate, such that a straight line delimits the receiving groove from each point on the cross section of the receiving groove on one of the faces to the corresponding point on the cross section on the other face. A circular plate is provided and a plurality of receiving grooves are introduced into the plate simultaneously on opposing regions relative to a central axis of rotation of the plate. 1. A method for producing a plate or disk of a turbomachine having a plurality of receiving grooves , which are formed on the cylindrical peripheral surface of the disk to receive blade roots of blades of the turbomachine , wherein the receiving grooves extend in a straight line from one face of the disk to the other face of the disk , such that a straight line delimits the receiving groove from each point of the cross section of the receiving groove on one of the faces to the corresponding point of the cross section on the other face ,wherein a circular disk is provided,wherein a plurality of receiving grooves are introduced into the disk simultaneously in opposing regions relative to a central axis of rotation of the disk.2. The method according to claim 1 ,wherein a plurality of receiving grooves are introduced into the disk simultaneously in opposing circle sectors relative to the central axis of rotation of the disk.3. The method according to claim 1 , wherein a plurality of receiving grooves are introduced into the disk simultaneously claim 1 , uniformly distributed along the circular claim 1 , ring-shaped periphery of the disk.4. The method according to claim 1 , wherein the plurality of receiving grooves claim 1 , which ...

Подробнее
Номер записи: 17
28-01-2016 дата публикации

Covered Embolic Coils

Номер: US20160022275A1
Автор: GARZA Armando
Принадлежит: INCUMEDx, Inc.

An embolic implant for treating aneurysms or other vascular disorders may include a cover component of unitary construction that is disposed about the exterior of a microcoil such that it does not extend into a lumen formed by the coil. The cover can enhance packing volume and density per unit length of coil, and can prevent blood flow and cause blood clotting while not risking rupture of the vascular disorder. The cover may also provide a platform for the application of multiple treatments and/or therapies including, for example, functionalized and/or bioactive coatings, drug coatings, gene therapy, thrombogenicity control coatings, and surface modifications, while preserving key coil performance attributes. 1. An implant adapted for use in treating a vascular disorder , the implant comprising:an embolic coil forming a lumen; anda cover of unitary construction disposed about an exterior of the embolic coil, wherein the cover does not extend into the lumen.2. The implant of claim 1 , wherein the embolic coil comprises a bare platinum coil.3. The implant of claim 1 , wherein the cover is expandable such that the cover covers the embolic coil in a constrained configuration during delivery of the implant to the vascular disorder and assumes an expanded configuration when the implant is placed within the vascular disorder.4. The implant of claim 3 , wherein the cover covers more surface area of the embolic coil in the expanded configuration than in the constrained configuration.5. The implant of claim 3 , wherein the cover is spaced apart from the embolic coil along at least a portion of the embolic coil when the cover is in the expanded configuration.6. The implant of claim 3 , wherein claim 3 , in the expanded configuration of the cover claim 3 , the implant comprises a biocompatible blood-contacting surface area between 110% and 200% of the embolic coil alone.7. The implant of claim 1 , wherein the cover comprises a shape memory material.8. The implant of claim 1 , ...

Подробнее
Номер записи: 18
10-02-2022 дата публикации

METHOD FOR HIGH-SPEED WIRE CUTTING

Номер: US20220040775A1
Автор: Knaak Reto, TABORELLI Marco
Принадлежит:

High-speed wire electrochemical-discharge cutting method (HS-WECDM), in which a work piece is processed by means of a wire electrode, in which consecutive negative polarity pulses are applied at said wire electrode, thereby at least partially developing discrete electrical discharges, wherein the method further includes, applying positive polarity pulses at the wire electrode between the negative pulses, and that an ignition occurring with each positive polarity pulse is immediately detected, and that the positive polarity pulses are immediately interrupted. 1. High-speed wire electrochemical-discharge cutting method (HS-WECDM) , in which a work piece is processed by means of a wire electrode , in which consecutive negative polarity pulses are applied at said wire electrode , the negative polarity pulses having open circuit voltage U , thereby at least partially developing discrete electrical discharges , the method further comprising: applying positive polarity pulses at the wire electrode between the negative pulses , the positive polarity pulses having a positive polarity open circuit voltage U , and that an ignition occurring with each positive polarity pulse is immediately detected , and that the positive polarity pulses are immediately interrupted.2. HS-WECDM cutting method according to claim 1 , wherein consecutive pulse periods are applied to the gap between said work piece and said wire electrode claim 1 , and that the pulse periods comprise at least one positive polarity pulse at the wire electrode in which a positive open circuit voltage Uis applied claim 1 , and that the pulse periods further comprise a negative polarity pulse at the wire electrode in which a negative open circuit voltage Uis applied claim 1 , and that an ignition occurring in the course of said at least one positive polarity pulse is immediately detected claim 1 , and that such positive polarity pulse is immediately interrupted claim 1 , and that the negative polarity pulse is applied ...

Подробнее
Номер записи: 19
29-01-2015 дата публикации

WELD CLEANING FLUID

Номер: US20150027903A1
Автор: Lewer Simon
Принадлежит: ENSITECH IP PTY LTD

The invention relates to a weld cleaning fluid, and method of cleaning weld or discolouration especially on stainless steel. Stainless steel welds, such as those done by TIG welding, require cleaning to remove the resulting surface discolouration and also to passivate the steel. This is often done using an electro-cleaning apparatus with the assistance of electrolyte cleaning fluids. A new cleaning fluid has been developed that has a generally neutral pH, instead of the highly acidic nature of previously used fluids, which avoids environmental and safety issues. The cleaning fluid composition preferably has potassium or sodium orthophosphate salts as the main active ingredient, or similar such salts, and has a pH of around 7. It may also include a sequestering or chelating agent such as a sodium and/or potassium salt of EDTA, and colouring and fragrance. 1. A metal cleaning composition comprising an aqueous solution of an acid salt having a pH that is approximately neutral.2. The composition of claim 1 , wherein the metal cleaning composition is adapted to clean the weld tint from stainless steel.3. The composition of claim 1 , wherein the salt is of an acid that is selected from any one or more of a phosphoric acid claim 1 , nitric acid claim 1 , sulfuric acid claim 1 , hydrochloric acid or citric acid.4. The composition of claim 3 , wherein the acid is phosphoric acid.5. The composition of wherein the salt selected from any one or more of potassium claim 1 , sodium claim 1 , ammonium claim 1 , manganese or magnesium salts.6. The composition of wherein the salt is the potassium salt and/or sodium salt.7. The composition of claim 1 , wherein the acid salt is one or more of the oxo anions of potassium or sodium phosphate claim 1 , being selected from any one or more of KPO claim 1 , KHPO claim 1 , KHPO claim 1 , and NaHPO.8. The composition of claim 1 , wherein the acid salt is substantially tripotassium phosphate (KPO).9. The composition of wherein the acid salt is ...

Подробнее
Номер записи: 20
29-01-2015 дата публикации

MULTIPART ELECTRODE ARRAY AND METHOD FOR THE ELECTROCHEMICAL TREATMENT OF BLADES HAVING SHROUDING BANDS

Номер: US20150027904A1
Автор: Arbinger Daniela, PLATZ Albin
Принадлежит:

The invention relates to a method for electrochemically machining blades of a turbomachine having at least one U-shaped or trapezoidal cross-sectional profile of the surface to be treated, wherein an electrode array having at least three electrodes that can be moved in different directions is provided. The electrodes are moved from a start position having a first distance to the surface to be machined into an end position having a second distance to the surface to be machined, wherein in the end position, a closed work surface of the electrodes having a negative shape of the surface contour of the surface to be machined is located opposite thereof. The invention further relates to an electrode array for carrying out an electrochemical machining, wherein the electrode array comprises at least three electrodes that can be moved in different directions to one another, and to stationary mounting, wherein the electrodes can be moved from a start position to an end position. 116.-. (canceled)17. A method for the electrochemical machining of blades of a turbomachine , wherein the blade has a gas passage region and comprises shrouds at a blade root and/or at a blade tip , which shrouds are inclined on one side or on both sides so that undercuts exist in the gas passage region , and wherein the method comprises using at least two multipart electrodes comprising sub-electrodes which are moved from an initial position at a first distance from a surface to be machined to an end position at a second distance from an end contour of the surface to be machined so that in the end position a closed working surface of the electrodes with a negative shape lies opposite the end contour of the surface to be machined.18. The method of claim 17 , wherein all of the sub-electrodes arrive at the end position at the same time.19. The method of claim 17 , wherein each multipart electrode comprises at least three sub-electrodes and wherein outer sub-electrodes are moved at an angle of 30° to 60 ...

Подробнее
Номер записи: 21
29-01-2015 дата публикации

TOOL HOLDER AND METHOD FOR PRODUCING A TOOL RECEIVING PORTION FOR SUCH A TOOL HOLDER

Номер: US20150028548A1
Автор: HAIMER Franz
Принадлежит:

A tool holder with a main part, a deformable receiving portion for clamping a tool, and at least one blocking element which is designed to engage into a corresponding counter element on the tool in order to prevent the tool from moving axially out of the tool holder. The at least one blocking element is integrally formed with the receiving portion. A clamping system having such a tool holder and a method for producing a receiving portion for such a tool holder are also described. 1. Tool holder with a main part , a deformable receiving portion for clamping a tool and at least one blocking element that is formed to prevent axial slippage of the tool from the tool holder by engaging with a corresponding counter element on the tool , wherein the at least one blocking element is formed integrally with the receiving portion.2. Tool holder according to claim 1 , wherein the receiving portion is an expansion sleeve deployed in a receiving opening of the main part and subject to external pressure with hydraulic fluid claim 1 , on the inner side of which is deployed the at least one blocking element.3. Tool holder according to claim 1 , wherein the receiving portion is formed as a contracting chuck realized integrally with the main part claim 1 , on the inside of which is deployed the at least one blocking element.4. Tool holder according to claim 1 , wherein the receiving portion is formed as a reducing sleeve deployed within a contracting chuck claim 1 , on the inside of which is deployed the at least one blocking element.5. Tool holder according to claim 1 , wherein the receiving portion is formed as a collet chuck that is deployed within a receiving opening of the main part and can be deformed by a clamping element claim 1 , on the inside of which is deployed the at least one blocking element.6. Tool holder according to claim 1 , wherein the receiving portion is formed as a clamping region deployed on a front part of the main part claim 1 , that can be deformed by a ...

Подробнее
Номер записи: 22
02-02-2017 дата публикации

ELECTROCHEMICAL MACHINING SYSTEM AND METHOD OF MACHINING A CONDUCTIVE WORK PIECE

Номер: US20170028492A1
Автор: Hayashi Steven Robert, McNamara Jeremy Gordon, Nieters Edward James, TRIMMER Andrew Lee
Принадлежит:

An electrochemical machining system for machining a conductive work piece is provided. The system includes a drilling tool configured to remove material from the conductive work piece. The drilling tool is configured to advance within the conductive work piece along a tool path to form a bore hole having a variable geometry that extends through the conductive work piece when the material is removed therefrom. The system further includes an inspection device configured to determine a position of the drilling tool along the tool path, and a controller configured to communicate with the inspection device. The controller is further configured to compare the tool path to a nominal tool path, and determine a position error of said drilling tool, the position error defined by a difference between the tool path and the nominal tool path. 1. An electrochemical machining system for machining a conductive work piece , said system comprising:a drilling tool configured to remove material from the conductive work piece, wherein said drilling tool is configured to advance within the conductive work piece along a tool path to form a bore hole having a variable geometry that extends through the conductive work piece when the material is removed therefrom;an inspection device configured to determine a position of said drilling tool along the tool path; and compare the tool path to a nominal tool path; and', 'determine a position error of said drilling tool, the position error defined by a difference between the tool path and the nominal tool path., 'a controller configured to communicate with said inspection device, wherein said controller is further configured to2. The system in accordance with claim 1 , wherein said inspection device is configured to perform a pre-drilling inspection of the conductive work piece to determine dimensions thereof claim 1 , said controller further configured to determine a modified nominal tool path based on variations in the dimensions of the ...

Подробнее
Номер записи: 23
02-02-2017 дата публикации

DRILLING TOOL AND SYSTEM FOR USE IN MACHINING A CONDUCTIVE WORK PIECE

Номер: US20170028493A1
Автор: Cintula Mark James, TRIMMER Andrew Lee
Принадлежит:

A drilling tool for use in machining a conductive work piece is provided. The tool includes a forward electrode tip that includes an outer radial portion and an inner radial portion that extends from a forward face of the outer radial portion. The tool also includes a dielectric sheath that extends circumferentially about the outer radial portion, and at least one side electrode coupled to the dielectric sheath. When electric current is supplied to the forward electrode tip and the at least one side electrode, material adjacent to the forward electrode tip and the at least one side electrode is removed from the conductive work piece. The forward electrode tip and the at least one side electrode are selectively operable to form a bore hole having a variable geometry that extends through the conductive work piece when the material is removed therefrom. 1. A drilling tool for use in machining a conductive work piece , said tool comprising:a forward electrode tip comprising an outer radial portion and an inner radial portion, said outer radial portion comprising a forward face, and said inner radial portion extending from said forward face of said outer radial portion;a dielectric sheath that extends circumferentially about said outer radial portion; andat least one side electrode coupled to said dielectric sheath, wherein, when electric current is supplied to said forward electrode tip and said at least one side electrode, material adjacent to said forward electrode tip and said at least one side electrode is removed from the conductive work piece, and wherein said forward electrode tip and said at least one side electrode are selectively operable to form a bore hole having a variable geometry that extends through the conductive work piece when the material is removed therefrom.2. The tool in accordance with further comprising an electrically conductive sheath coupled to said forward electrode tip claim 1 , said electrically conductive sheath extending between said ...

Подробнее
Номер записи: 24
01-02-2018 дата публикации

ELECTROCHEMICAL MACHINING DEVICE AND ELECTROCHEMICAL MACHINING METHOD

Номер: US20180029151A1
Автор: Hashimoto Takashi, KAWANAKA Takuma, KUNIEDA Masanori, Yuzawa Takashi
Принадлежит:

An electrochemical machining device improves a roughness of a machined surface while keeping a relative scanning speed of a tool electrode with respect to a workpiece low. A power source applies a voltage, for making current for electrochemical machining flow, between a tool electrode and a workpiece. The tool electrode is arranged apart from the workpiece and is capable of being scanned relatively along a surface direction of the workpiece. An electrolytic solution supply section supplies electrolytic solution for electrochemical machining between the tool electrode and the workpiece. The charge control means eliminates an electrical charge that has accumulated between the tool electrode and the workpiece using an appropriate method. 1. An electrochemical machining device for machining a surface of a workpiece using electrochemical machining , comprising: the power source applies a voltage, for making current for electrochemical machining flow, between the tool electrode and the workpiece,', 'the tool electrode is arranged apart from the workpiece and is capable of being scanned relatively along a surface direction of the workpiece,', 'the electrolytic solution supply section supplies electrolytic solution for electrochemical machining between the tool electrode and the workpiece, and', 'the charge control means eliminates an electrical charge that has accumulated between the tool electrode and the workpiece as a result of the voltage applied by the power source., 'a power source, a tool electrode, an electrolytic solution supply section, and a charge control means, wherein2. The electrochemical machining device of claim 1 , wherein the power source uses pulse current as the current claim 1 , andthe charge control means eliminates the electrical charge based on a duty factor of the pulse current.3. The electrochemical machining device of claim 2 , wherein an upper limit of an absolute value of a pulse width for the pulse current is set short enough to apply mirror ...

Подробнее
Номер записи: 25
12-02-2015 дата публикации

METHOD OF REMOVING A METAL DETAIL FROM A SUBSTRATE

Номер: US20150041330A1
Автор: JR. Robert T., Kimball Nicklaus C., Knicely Robert L., Loftus
Принадлежит: The Boeing Company

A method of removing a metal detail from a dielectric material of an article may include placing the article in an electrolyte bath such that at least a portion of the metal detail is submerged. The metal detail may be coupled to a dielectric material. The method may further include positioning at least one cathode in the electrolyte bath in spaced relation to the metal detail, and passing electrical current through the metal detail. The method may additionally include deplating the metal detail from the dielectric material in response to passing the electrical current through the metal detail. 1. A method of removing a metal detail from a dielectric material of an article , comprising the steps of:placing an article in an electrolyte bath such that at least a portion of a metal detail is submerged, the metal detail being coupled to a dielectric material;positioning at least one cathode in the electrolyte bath in spaced relation to the metal detail;passing electrical current through the metal detail; anddeplating the metal detail from the dielectric material in response to passing the electrical current through the metal detail.2. The method of claim 1 , further comprising the step of:applying a masking layer to a portion of the metal detail to form a masked portion and an unmasked portion of the metal detail, the unmasked portion being exposed to the electrolyte bath; anddeplating the unmasked portion in response to passing electrical current through the metal detail.3. The method of claim 2 , further including:progressively removing the masking layer from the metal detail during the deplating thereof.4. The method of claim 2 , further comprising:monitoring a masking edge for a non-deplated portion of the metal detail representing a potential metal island wherein the metal detail may become electrically disconnected to an anode connection;applying a masking sealant along the masking edge such that the masking sealant at least partially overlaps the non-deplated ...

Подробнее
Номер записи: 26
18-02-2016 дата публикации

METHODS AND SYSTEMS FOR ELECTROCHEMICAL MACHINING OF AN ADDITIVELY MANUFACTURED COMPONENT

Номер: US20160045967A1
Автор: Carter William Thomas, Deaton, Fornasiero Michael John, JR. John Broddus, TRIMMER Andrew Lee
Принадлежит:

A system of manufacturing a component comprises forming a component on a conductive build plate. The component defines at least one access port and includes an inner surface that defines at least one internal passage. The system further includes forming at least one electrode within the at least one internal passage, wherein the at least one electrode is electrically isolated from the component. An electromotive force is applied to the at least one electrode to facilitate smoothing the inner surface. 1. A system comprising:a component, wherein said component includes an inner surface and at least one internal passage;at least one electrode formed within said at least one internal passage and electrically isolated from the component, wherein said component and said at least one electrode are formed using additive manufacturing; anda power source operatively connected to said at least one electrode, wherein said power source is configured to apply an electromotive force to facilitate smoothing said inner surface with said electrode.2. The system according to wherein the at least one electrode and the component are formed substantially simultaneously.3. The system according to wherein the power source is operatively connected to said at least one electrode and to said component.4. The system according to wherein the component is coupled to a support plate.5. The system according to claim 4 , wherein said support plate is formed from a non-conductive material electrically isolating the at least one electrode from the component.6. The system according to claim 4 , wherein said support plate further comprises a non-conductive material on at least some portions of the support plate electrically isolating the at least one electrode from the component.7. The system according to further comprising at least one access port through the component and providing access to said at least one internal passage.8. The system according to further comprising at least one anchor coupled ...

Подробнее
Номер записи: 27
18-02-2016 дата публикации

Apparatus for electrochemically machining a metallic workpiece

Номер: US20160045968A1
Автор: Richard Keller, Walter Thomas Gmelin
Принадлежит: EMAG Holding GmbH

An apparatus for electrochemically machining a workpiece has a tool having a surface-machining part and a piercing part. The parts are relatively fixed and jointly movable. A power source oppositely polarizes the tool and the workpiece and an electrolyte is fed to the workpiece. The tool is pressed against the workpiece such that the surface-machining part forms a shaped surface on the workpiece and simultaneously the piercing part forms or enlarges a bore in the workpiece.

Подробнее
Номер записи: 28
13-02-2020 дата публикации

METHOD FOR THE PRODUCTION OF DRILL HOLES IN DIFFICULT TO MACHINE MATERIALS

Номер: US20200047270A1
Автор: Feiling Nicole, HUBER NORBERT, Kuepper Anna Carina, PLATZ Albin
Принадлежит: MTU Aero Engines AG

The present invention relates to a method for the production of drill holes in difficult to machine materials, in which a removal of material takes place in order to produce a drill hole by electrochemical erosion of material by an electrode that is moved in the longitudinal direction of the drill hole being produced in the direction onto the material to be processed at a feed rate, wherein the drilling has at least two steps, wherein, in the first step, the electrochemical processing takes place, and wherein, in a second step, the further processing of the drill hole to the final diameter takes place by machining processing or by erosion or by an electrochemical processing. 1. A method for the production of drill holes in difficult to machine materials , in which a removal of material takes place in order to produce a drill hole by electrochemical erosion of material by an electrode that is moved in the longitudinal direction of the drill hole being produced in the direction onto the material to be processed at a feed rate , wherein the drilling proceeds in at least two steps , wherein , in the first step , the electrochemical processing takes place , in which the feed rate of the electrode is less than or equal to 20 mm/min during the electrochemical material erosion and the drill hole is fabricated with a drill hole diameter that is 0.05 to 2 mm smaller than a final diameter of the drill hole , and wherein , in a second step , the further processing of the drill hole to the final diameter takes place by machining processing or by erosion or by an electrochemical processing , in which the feed rate of the electrode is greater than or equal to 20 mm/min during the electrochemical material erosion.2. The method according to claim 1 , wherein claim 1 , for the electrochemical processing in the second step claim 1 , the feed rate is greater than or equal to 30 mm/min claim 1 , preferably up to 50 or 60 mm/min.3. The method according to claim 1 , wherein claim 1 , for ...

Подробнее
Номер записи: 29
26-02-2015 дата публикации

WIRE DISCHARGE MACHINING APPARATUS AND MANUFACTURING METHOD FOR SEMICONDUCTOR WAFERS USING THE SAME

Номер: US20150053650A1
Автор: Itokazu Atsushi, Miyake Hidetaka, Nakanishi Yosuke
Принадлежит: Mitsubishi Electric Corporation

A wire discharge machining apparatus including a plurality of main guide rollers disposed in parallel at intervals, one wire that is wound between the guide rollers while being spaced apart from one another at a fixed pitch to form cutting wire sections between a pair of guide rollers and travels according to the rotation of the main guide rollers, and power feed terminal units that feed electric power to wires of the cutting wire sections. The wire discharge machining apparatus performs cutting of a work piece with the cutting wire sections, suspends cut-out of semiconductor wafers from the work piece in a state in which a part of the semiconductor wafers is connected to the work piece, brings the wires of the cutting wire sections close to one cut surfaces, and scans the cut surfaces in a discharge-machined state. 1. A wire discharge machining apparatus comprising:a pair of guide rollers disposed in parallel at intervals;a wire that is wound between the pair of guide rollers a plurality of times while being spaced apart from each other at a fixed pitch to form a parallel wire section between the pair of guide rollers and travels according to the rotation of the guide rollers;a pair of damping guide rollers that are provided between the pair of guide rollers, follow and come into contact with the parallel wire section, and form a plurality of damped cutting wire sections;a plurality of power feed terminals that feed electric power to each of the cutting wire sections; anda unit that moves a work piece to the cutting wire sections relatively in a parallel direction of wires forming the cutting wire sections and a direction perpendicular to the parallel direction of the wires forming the cutting wire sections in such a manner as to bring the wires of the cutting wire sections closer to either one of a pair of cut surfaces formed by being cut by the wires of the cutting wire sections than the other, whereinthe wire discharge machining apparatus scans either one of the ...

Подробнее
Номер записи: 30
23-02-2017 дата публикации

PATTERN TRANSFER DEVICE FOR MASS TRANSFER OF MICRO-PATTERNS ONTO MEDICAL DEVICES

Номер: US20170049940A1
Автор: GARZA Armando
Принадлежит:

This invention is directed to a pattern transfer device and assembly for mass-transfer/fabrication of micro-sized features/structures onto the inner diameter (ID) surface of a stent. This new approach is provided by technique of through mask electrical micro-machining. One embodiment discloses an application of electrical micro-machining to the ID of a stent using a customized electrode configured specifically for machining micro-sized features/structures. 1. A patterned masked electrode , comprising:a. An generally cylindrical electrically conductive electrode member having an outer surface;b. A non-conductive coating on the outer surface of the electrode member; andc. A micro-pattern defined in the non-conductive coating passing through the non-conductive coating and exposing defined portions of the electrode member.2. The patterned masked electrode of claim 1 , wherein the non-conductive coating is of a material capable of being vacuum deposited onto the outer surface of the electrode member.3. The patterned masked electrode method of claim 1 , wherein the micro-pattern corresponds to a pattern of grooves adapted to be transferred to a luminal surface of an intraluminal stent.4. The patterned masked electrode of claim 3 , further comprising an intraluminal stent concentrically engaged with the electrode member such that the non-conductive coating is intermediate the electrode member and the intraluminal stent.5. The patterned masked electrode claim 1 , wherein the non-conductive coating is made of a material capable of being applied to the electrode member by one of dipping claim 1 , spray coating claim 1 , air brushing or lamination techniques.6. The patterned masked electrode claim 1 , wherein the micro-pattern further comprises a plurality of grooves passing through the non-conductive coating claim 1 , each of the plurality of grooves having a cross-sectional configuration selected from the group consisting of square claim 1 , u-shaped claim 1 , triangular ...

Подробнее
Номер записи: 31
01-03-2018 дата публикации

Wire electrical discharge machine

Номер: US20180056418A1
Автор: Hikaru Yamane
Принадлежит: FANUC Corp

A wire electrical discharge machine includes: a travelling route formed of multiple divisional regions, through which a wire electrode is fed by an auto wire feeding mechanism; and a memory storing failure evaluation reference data on the auto wire feeding for every divisional region. The wire electrical discharge machine detects failure of the auto wire feeding and locate the tip position of the wire electrode at the time of failure and causes a controller to determine whether to perform or stop retry of the auto wire feeding based on the located tip position and the failure evaluation reference data for every divisional region.

Подробнее
Номер записи: 32
21-02-2019 дата публикации

TOOL FOR MACHINING WELLS IN MULTl-STAGE DISCS BY PECM, ELECTROCHEMICAL MACHINING ASSEMBLY AND MACHINE INCLUDING SAID TOOL, AND METHOD USING SAID TOOL

Номер: US20190054555A1
Автор: GRUTZMACHER Andreas, KRAFT Juri, LECOMTE Janvier, RANCIC Mickael, TALLON Sophie
Принадлежит:

Tooling () for making slots in a multistage disk () by electrochemical machining. The tooling comprises first and second rings () arranged coaxially about a disk axis and configured to act as cathodes, each ring having an inside periphery with a plurality of radial machining projections. The first and second rings () are rigidly secured relative to each other. A method of making slots in a multistage disk by electrochemical machining using such a tool. 1. Tooling for making slots in a multistage disk by electrochemical machining , wherein the tooling comprises at least a first ring and a second ring , each arranged coaxially about an axis of the disk , and configured to act as a cathode for machining a respective one of two stages of different diameters of the disk , each ring having an inside periphery with a plurality of radial machining projections , the first and second rings being rigidly secured to each other.2. Tooling for making slots in a multistage disk by electrochemical machining according to claim 1 , wherein the radial projections are mushroom-shaped when seen axially along the axis of the disk.3. Tooling for making slots in a multistage disk by electrochemical machining according to claim 1 , further comprising a cover in which the rings are secured claim 1 , said cover being arranged around the rings and being configured to prevent the electrolyte that runs around the projections from being projected radially.4. Tooling for making slots in a multistage disk by electrochemical machining according to claim 3 , wherein the cover includes at least two portions that are electrically insulated from each other by an insulator element claim 3 , the first and second rings being secured to respective ones of the portions.5. Tooling for making slots in a multistage disk by electrochemical machining according to claim 3 , further including at least two movable protectors secured to said cover claim 3 , including fluid injection passages for injecting electrolyte ...

Подробнее
Номер записи: 33
09-03-2017 дата публикации

DEVICE AND METHOD FOR PRODUCING A BLADE AIRFOIL

Номер: US20170066071A1
Автор: BREITSAMETER Xaver, Huttner Roland
Принадлежит:

A device and a method for producing a blade airfoil from a workpiece which comprises at least two gaps and at least one blank arranged between the two gaps, wherein the blank comprises two opposite lateral faces which are bounded by a base, a top and a first and a second edge. The method comprises: 1. A method for producing a blade airfoil from a workpiece , wherein the workpiece comprises at least a first gap and a second gap , and at least one blank arranged between the first and second gaps of the workpiece , the at least one blank having first and second opposite lateral faces which are bounded by a base , by a top and by a first edge and a second edge , and wherein the method comprises:(a) arranging a first electrode in the first gap and arranging a second electrode in the second gap, a surface of the workpiece forming an annular space surface at the first and second gaps,(b) applying a positive voltage to the blank and applying a negative voltage to the first electrode and to the second electrode,(c) moving the first electrode in a direction of the first lateral face and/or moving the second electrode in a direction of the second lateral face,(b) being preceded by (d), passing electrolyte between the first and second electrodes over the top toward the base.2. The method of claim 1 , wherein the first and second gaps of the annular space surface are produced by mechanical and/or electrochemical machining.3. The method of claim 1 , wherein by carrying out (a) to (d) claim 1 , an intermediate blade is created from the blank claim 1 , said intermediate blade having substantially a regular oversize in at least one region of the blade airfoil compared with a nominal contour of the blade airfoil.4. The method of claim 3 , wherein the region which has the regular oversize in at least one region of the blade airfoil compared with a nominal contour of the blade airfoil represents the first lateral face and/or the second lateral face of the blade airfoil.5. The method of ...

Подробнее
Номер записи: 34
19-03-2015 дата публикации

System and Method of Polishing a Surface

Номер: US20150076118A1
Автор: Hsia Kangmin
Принадлежит:

A method of polishing a surface of an object disposed within a gas chamber is provided. The method includes filling the gas chamber with a discharging medium to a predefined pressure, applying a voltage between an electrode and the surface, calibrating a height of the electrode relative to the surface so as to establish electrical breakdown threshold criteria, and scanning the electrode with respect to the surface so as to sequentially position the electrode over a plurality of locations on the surface, each location characterized by a surface error. When a respective location in the plurality of locations has a surface error that meets the electrical breakdown threshold criteria, electrical breakdown occurs, whereby the electrical breakdown results in a discharging pulse that polishes the surface. 1. A method of polishing a surface of an object disposed within a gas chamber , comprising:filling the gas chamber with a discharging medium to a predefined pressure;applying a voltage between an electrode and the surface;calibrating a height of the electrode relative to the surface so as to establish one or more electrical breakdown threshold criteria; andscanning the electrode with respect to the surface so as to sequentially position the electrode over a plurality of locations on the surface, each location characterized by a surface error;wherein when a respective location in the plurality of locations has a surface error that meets the electrical breakdown threshold criteria, electrical breakdown occurs;wherein the electrical breakdown results in a discharging pulse that polishes the surface.2. The method of claim 1 , wherein:the surface error for each location in the plurality of locations includes a surface height;the electrical breakdown threshold criteria are met when the surface height is such that a distance between the electrode and the surface causes the voltage to exceed a breakdown voltage of the discharging medium.3. The method of claim 1 , wherein the ...

Подробнее
Номер записи: 35
17-03-2016 дата публикации

ELECTROCHEMICAL MACHINING TOOL, ELECTROCHEMICAL MACHINING SYSTEM, AND METHOD FOR MANUFACTURING PERFORATED MEMBER

Номер: US20160074951A1
Автор: ASANO Shin, Kobayashi Tetsuhei, Mukai Yosuke, SHINTANI Tomofumi, Tamura Kazuhisa
Принадлежит:

An electrochemical machining tool () includes a tool body () which has an electrode () which is made of a flexible conductive material having a cylindrical shape extending along an axis (O), and inside which an electrolyte (W) flows toward a leading end () side, and an insulating layer () coated on an outer circumferential surface of the electrode () to expose a leading end surface of the electrode (), wherein a non-insulation section () which exposes the outer circumferential surface of the electrode () is formed on the tool body (), and the non-insulation section () is surrounded by the insulating layer () from an axial (O) direction. 18-. (canceled)9. An electrochemical machining tool comprising:a tool body which has an electrode which is made of a flexible conductive material having a cylindrical shape extending along an axis, and inside which an electrolyte flows toward a leading end side, and an insulating layer coated on an outer circumferential surface of the electrode to expose a leading end surface of the electrode,wherein a non-insulation section which exposes the outer circumferential surface of the electrode is provided on the tool body,the non-insulation section is provided to extend to a trailing end side in the axial direction from the leading end of the tool body and is sandwiched by the insulating layer in the circumferential direction,a plurality of the non-insulation sections are provided at intervals in the circumferential direction, andthe non-insulation sections are provided to incline toward one side in the circumferential direction as they extend toward the leading end side when seen from the radial direction, and the adjacent non-insulation sections are provided to overlap each other in the circumferential direction at different positions in the axial direction.10. An electrochemical machining system comprising:{'claim-ref': {'@idref': 'CLM-00009', 'claim 9'}, 'the electrochemical machining tool according to ;'}a guide section which guides ...

Подробнее
Номер записи: 36
17-03-2016 дата публикации

ELECTROCHEMICAL MACHINING OF A WORKPIECE

Номер: US20160074952A1
Автор: BAUR Hermann, DIETZ Heinz, DOLL Christian, Huttner Roland, KNEILLING Rolf
Принадлежит:

The invention relates to a machine having a base () and at least one work station () that has a module () for electrochemically machining a workpiece (). The module comprises: a frame (); and an electrode arrangement, having at least one electrode (), which is mechanically connected to the frame, and a drive () for moving this electrode, which drive is attached to the frame; a workpiece holder () for separably attaching the workpiece; and a positioning device () for displacing the workpiece holder and the module relative to each other. 1. A machine comprising a base and at least one work station which comprises a module for electrochemically machining a workpiece , wherein the module comprises:a frame; and at least one electrode which is mechanically connected to the frame, and', 'a drive for moving the at least one electrode, which drive is attached to the frame;, 'an electrode arrangement comprising'}a workpiece holder for separably attaching the workpiece; anda positioning device for displacing the workpiece holder and the module relative to each other.2. The machine of claim 1 , wherein the positioning device comprises a main body on which the workpiece holder and/or the module are/is mounted so as to be linearly displaceable.3. The machine of claim 2 , wherein the workpiece holder comprises a chuck for separably attaching the workpiece claim 2 , which chuck is separably connected to the main body.4. The machine of claim 1 , wherein the positioning device comprises a robot comprising at least two actuated revolute joints for displacing the workpiece holder relative to the module.5. The machine of claim 1 , wherein the positioning device comprises a crane having a lifting device and/or a robot having at least two actuated revolute joints for transferring the workpiece out of a further work station and/or a buffer and/or into a further work station and/or a further buffer of the machine.6. The machine of claim 1 , wherein the machine further comprises a swivel ...

Подробнее
Номер записи: 37
19-03-2020 дата публикации

ELECTROMECHANICAL MACHINING METHOD, METHOD OF MANUFACTURING PERFORATED MATERIAL, PROCESSING ELECTRODE, AND ELECTROMECHANICAL MACHINING SYSTEM

Номер: US20200086410A1
Автор: HASHIMOTO Takuro, IDOTA Masako, Matsumoto Kota
Принадлежит:

A method of forming a curved-shaped processing hole in a workpiece by electromechanical machining includes a step of feeding an electrolytic solution through an inner channel of a processing electrode and jetting the electrolytic solution from an outlet opening of the inner channel disposed on a tip surface of the processing electrode, a step of applying a potential difference between the processing electrode and the workpiece while jetting the electrolytic solution from the outlet opening of the processing electrode, and a step of forming the curved-shaped processing hole in the workpiece. In the jetting step, at least one of a current density distribution on the tip surface of the processing electrode or a flow velocity distribution of the electrolytic solution jetted from the outlet opening is eccentric to a downstream side of a curving direction of the processing hole with respect to an axial center of the tip surface. 1. An electromechanical machining method of forming a curved-shaped processing hole in a workpiece by electromechanical machining , comprising:a step of feeding an electrolytic solution through an inner channel of a processing electrode and jetting the electrolytic solution from an outlet opening of the inner channel disposed on a tip surface of the processing electrode;a step of applying a potential difference between the processing electrode and the workpiece while jetting the electrolytic solution from the outlet opening of the processing electrode; anda step of forming the curved-shaped processing hole in the workpiece,wherein, in the step of jetting the electrolytic solution, at least one of a current density distribution on the tip surface of the processing electrode or a flow velocity distribution of the electrolytic solution jetted from the outlet opening is eccentric to a downstream side of a curving direction of the processing hole with respect to an axial center of the tip surface of the processing electrode.2. The electromechanical ...

Подробнее
Номер записи: 38
13-04-2017 дата публикации

Method for manufacturing a striking plate for a golf club head

Номер: US20170100792A1
Автор: Chen-kuo Huang, Wen-Yuan Wang, Yuan-Jen Hou
Принадлежит: Advanced International Multitech Co Ltd

A method for manufacturing a striking plate for a golf club head includes the steps of: providing a metal blank plate having a surface which includes a plurality of first machining zones displaced from each other by a corresponding one of a plurality of second machining zones, machining the first machining zones of the metal blank plate using a precise electrochemical machining device, and machining the second machining zones using the precise electrochemical machining device.

Подробнее
Номер записи: 39
08-04-2021 дата публикации

ELECTROCHEMICAL ETCHING

Номер: US20210102308A1
Автор: BRASSARD Pascal, Girard Frederic, ING Visal, Johnson Jonathan
Принадлежит:

A method of adding a feature to a part made of a metal alloy includes wire electric-discharge machining the feature into the part using a wire electrode having a zinc component to create a recast layer. After the step of wire electric-discharge machining the feature, at least some of the recast layer is removed by performing an electrochemical etching process that includes positioning a cathode adjacent the feature and passing current through a portion of the part that contains the feature. 1. A method of adding a feature to a part made of a metal alloy , comprising:wire electric-discharge machining the feature into the part using a wire electrode having a zinc component to create a recast layer,after the step of wire electric-discharge machining the feature, removing at least some of the recast layer by performing an electrochemical etching process that includes positioning a cathode adjacent the feature and passing current through a portion of the part that contains the feature.2. The method of claim 1 , wherein the step of performing the electrochemical etching process includes exposing the recast layer to an electrolyte during the step of passing current through the portion of the part.3. The method of claim 1 , wherein the step of performing the electrochemical etching process includes forming a sulfate radical.4. The method of claim 3 , wherein the forming the sulfate radical is from a sulfate ion.5. The method of claim 3 , wherein the step of performing the electrochemical etching process includes reacting the sulfate radical with water to form sulfuric acid and oxygen.6. The method of claim 1 , wherein the step of performing the electrochemical etching process includes reacting oxygen with a material of the recast layer to form a metal oxide.7. The method of claim 1 , wherein the recast layer includes a nickel base alloy and the step of performing the electrochemical etching process includes reacting oxygen with the nickel base alloy to form a metal oxide.8. ...

Подробнее
Номер записи: 40
30-04-2015 дата публикации

Identifying and regulating the starting behavior during electrochemical machining of workpieces

Номер: US20150114844A1
Автор: Dirk Ruhlig, Markus BOXHAMMER
Принадлежит: MTU Aero Engines AG

Disclosed is a method for the electrochemical machining of a workpiece, in which at least one electrode is situated adjacent to a surface to be machined and current pulses are generated in pulsed operation to ablate material from the workpiece. Before and/or at the beginning and/or during the electrochemical ablation, data of the current pulses are registered and analyzed to identify a starting phase or a transient phase comparable to a starting phase and/or to regulate the spacing of the electrode to the surface to be machined and/or the current flow during a starting phase or a transient phase comparable to a starting phase.

Подробнее
Номер записи: 41
30-04-2015 дата публикации

Electrochemical system and method for electropolishing hollow metal bodies

Номер: US20150114847A1
Автор: E. Jennings Taylor, Maria E. Inman, Timothy Hall
Принадлежит: Faraday Technology Inc

A method and system for electrochemically machining a hollow body of a metal or a metal alloy. An electrode is positioned within a hollow body including a metal or metal alloy, where the hollow body has a variable internal diameter. The hollow body is oriented vertically, with the electrode oriented vertically therein. The hollow body is at least partially filled with an aqueous, acidic electrolyte solution, the electrolyte solution being devoid of hydrofluoric acid and having a viscosity less than 15 cP. An electric current is passed between the hollow body and the electrode, where the electric current includes a plurality of anodic pulses and a plurality of cathodic pulses, and where the cathodic pulses are interposed between at least some of the anodic pulses.

Подробнее
Номер записи: 42
30-04-2015 дата публикации

METAL LAMINATE STRUCTURES WITH SYSTEMS AND METHODS FOR TREATING

Номер: US20150118506A1
Автор: Adis William Edward, Jones Michael Lewis, Luo Yuefeng
Принадлежит: GENERAL ELECTRIC COMPANY

The present disclosure generally relates to a sealed metal laminate structure comprising: a metal layer having a first surface and an opposite second surface; a first enamel layer laminated on the first surface of the metal layer, except at an exposed metal protrusion at a perimeter edge of the sealed metal laminate structure; a second enamel layer laminated on the second surface of the metal layer, except at the exposed metal protrusion at the perimeter edge of the sealed laminate structure; and a phosphate sealer deposited on the exposed metal protrusion of the sealed metal laminate structure. The present disclosure also relates to a metal laminate structure without a phosphate sealer. In addition, systems and methods for treating workpieces, including metal laminate structures, are discussed. 1. A sealed metal laminate structure comprising:a metal layer having a first surface and an opposite second surface;a first enamel layer laminated on the first surface of the metal layer, except at an exposed metal protrusion at a perimeter edge of the sealed metal laminate structure;a second enamel layer laminated on the second surface of the metal layer, except at the exposed metal protrusion at the perimeter edge of the sealed laminate structure; anda phosphate sealer deposited on the exposed metal protrusion of the sealed metal laminate structure.2. The sealed metal laminate structure of claim 1 , further comprising:a first mill coating layer between the first surface and the first enamel layer; anda second mill coating layer between the second surface and the second enamel layer;wherein each of the first mill coating layer and the second mill coating layer have a substantially uniform thickness and extend from the perimeter edge of the sealed metal laminate structure to a second perimeter edge of the sealed metal laminate structure.3. The sealed metal laminate structure of claim 1 , wherein the phosphate sealer is applied by one of electrolytic deposition and conversion ...

Подробнее
Номер записи: 43
18-04-2019 дата публикации

METHOD FOR ELECTROCHEMICAL MACHINING OF COMPLEX INTERNAL ADDITIVELY MANUFACTURED SURFACES

Номер: US20190111507A1
Автор: Lynch Matthew E., Twelves Wendell V.
Принадлежит: UNITED TECHNOLOGIES CORPORATION

An electrochemical machining system comprises a component having a passage, the passage has an opening and an internal surface formed along the passage, a conductive wire has insulation covering portions of the conductive wire forming gaps having exposed wire; the conductive wire is inserted in the passage; a power source is coupled to the component and the conductive wire forms an electrical circuit, wherein the component comprises an anode and the conductive wire comprises a cathode; and an electrolyte within the passage contacting the internal surface and the exposed wire, wherein the electrolyte comprises a charge-carrying liquid configured to complete the electrical circuit between the cathode and anode. 1. An electrochemical machining system comprising:a component having a passage, said passage having an opening and an internal surface formed along said passage;a conductive wire having insulation covering portions of said conductive wire forming gaps having exposed wire, said conductive wire being inserted in said passage;a power source coupled to said component and said conductive wire forming an electrical circuit, wherein said component comprises an anode and said conductive wire comprises a cathode; andan electrolyte within said passage contacting said internal surface and said exposed wire, wherein the electrolyte comprises a charge-carrying liquid configured to complete the electrical circuit between the cathode and anode.2. The system according to claim 1 , further comprising an electrolyte plug coupled to said passage opening claim 1 , said electrolyte plug having a wire port and an electrolyte port.3. The system according to claim 2 , wherein said wire port is configured to pass the wire through the electrolyte plug while preventing electrolyte leakage past the electrolyte plug.4. The system according to claim 2 , wherein the electrolyte port is configured to flow the electrolyte through the electrolyte plug and prevent leakage of the electrolyte.5. ...

Подробнее
Номер записи: 44
13-05-2021 дата публикации

Work station for electrochemically machining a workpiece, in particular a rotationally symmetrical workpiece, comprising a plurality of recesses, and method for producing an end contour of a recess

Номер: US20210138568A1
Автор: Martin Fessler-Knobel, Roland Huttner
Принадлежит: MTU Aero Engines AG

The invention relates to a work station for electrochemically machining a workpiece, having a number of recesses, including a base structure; a module which is fastened to the base structure and is configured to electrochemically machine the workpiece. A workpiece holder is fastened to the base structure. The workpiece holder is movable relative to the base structure along a feed axis which is parallel to the axis of rotation of the module. The module includes an electrode carrier arrangement, which is coupled to the module base body so the electrode carrier arrangement can be rotated together with the module base body about the axis of rotation of the module. The electrode carrier arrangement has a carrier frame and an electrode frame, where at least one electrode is detachably fastened to the electrode frame.

Подробнее
Номер записи: 45
07-05-2015 дата публикации

ELECTROCHEMICAL MACHINING DEVICE

Номер: US20150122636A1
Автор: CHANG SHAO-HAN
Принадлежит:

An electrochemical machining device includes an electrode bundle, an electrode sleeve used for receiving the electrode bundle therein, and an electrolytic tank. The electrode bundle includes a number of columnar electrodes. Each of the columnar electrodes can move along an axial direction of the electrode sleeve. The electrode sleeve includes sidewalls, and two pressing plates positioned corresponding to two adjacent sidewalls. The sidewalls of the electrode sleeve include a number of screws to adjust a distance between the pressing plates and the corresponding sidewalls. The pressing plates can be moved to press the electrode bundle, and fix the electrode bundle between the pressing plates and the corresponding sidewalls of the electrode sleeve. A shape of the electrode bundle can be adjusted according to a shape of a molding surface. 1. An electrochemical machining device comprising:an electrolytic tank;an electrode sleeve coupled to the electrolytic tank and comprising a plurality of sidewalls and a plurality of pressing plates positioned to the sidewalls respectively, wherein the sidewalls define a plurality of holes, each configured to receive one of a plurality of screws, that are fixed to the corresponding pressing plates and configured to adjust a distance between the pressing plates and the corresponding sidewalls; andan electrode bundle received in the electrode sleeve and comprising a plurality of columnar electrodes;wherein the pressing plate is configured to press against the electrode bundle, and a pressing force of the pressing plates on the electrode bundle is adjustable to fix the electrode bundle between the pressing plates and the corresponding sidewalls of the electrode sleeve.2. The electrochemical machining device as claimed in claim 1 , wherein the columnar electrodes is solid or hollow.3. The electrochemical machining device as claimed in claim 1 , wherein a cross-section of each columnar electrode is rectangular claim 1 , triangular claim 1 ...

Подробнее
Номер записи: 46
09-04-2020 дата публикации

METHOD OF MACHINING GAS TURBINE ENGINE COMPONENTS

Номер: US20200108458A1
Автор: Faughnan Paul R., Freedman Alex C.
Принадлежит:

A method of forming a gas turbine engine component including an airfoil and at least one shroud includes the steps of (1) machining a gas path surface of the at least one shroud utilizing a non-electrochemical machining (ECM) process, and (2) then utilizing ECM on at least the airfoil. 1. A method of forming a gas turbine engine component including an airfoil and at least one shroud comprising the steps of:(1) machining a gas path surface of said at least one shroud utilizing a non-electrochemical machining (ECM) process; and(2) then utilizing ECM on at least said airfoil.2. A method as set forth in claim 1 , wherein step (2) includes claim 1 , using a pulsed ECM process in which a DC current is pulsed with a frequency of between 10 and 50 Hz.3. A method as set forth in claim 1 , wherein step (2) includes claim 1 , using a precise ECM process in which a DC current is pulsed and a linear oscillation of a cathode with a frequency of between 10 and 50 Hz and a constant stroke length is applied in a cathode feed direction.4. The method as set forth in claim 3 , wherein the current is applied at an angular timing of between 80 and 280 degrees of the oscillation claim 3 , where 0 degrees represents the largest gap between the workpiece and cathode.5. A method as set forth in claim 1 , wherein step (2) includes claim 1 , using an oscillation of at least one of a cathode and the workpiece in a radial direction of the airfoil.6. A method as set forth in claim 4 , wherein the oscillation of the at least one cathode and workpiece is achieved with piezoelectric elements or mechanically.7. A method of forming a gas turbine engine component including an airfoil and at least one shroud comprising the steps of:(1) forging an oversized or near-net airfoil shape;(2) machining an airfoil and flow path surfaces of shrouds to provide an optimized input geometry for an electrochemical machining (ECM) process; and(3) utilizing at least one ECM process on said airfoil.8. A method as set ...

Подробнее
Номер записи: 47
04-05-2017 дата публикации

SYSTEM AND METHOD FOR MACHINING WORKPIECE OF LATTICE STRUCTURE AND ARTICLE MACHINED THEREFROM

Номер: US20170120359A1
Автор: Carter William Thomas, Erno Daniel J, Trimmer Andrew Lee`
Принадлежит:

A system is configured for machining a workpiece of a lattice structure, the system includes an electrode of a lattice structure, an electrolyte supply, and a power supply. The workpiece and the electrode are intertwined with each other and electrically isolated from each other. The electrolyte supply is configured for circulating an electrolyte around and between the workpiece and the electrode. The power supply is configured for applying a voltage between the workpiece and the electrode to facilitate smoothing surfaces of the workpiece. 1. A system for machining a workpiece of a lattice structure , the system comprising:an electrode of a lattice structure, wherein the electrode and the workpiece are intertwined with each other and electrically isolated from each other; andan electrolyte supply for circulating an electrolyte around and between the workpiece and the electrode; anda power supply for applying a voltage between the workpiece and the electrode to facilitate smoothing surfaces of the workpiece.2. The system of claim 1 , wherein a polarity of the voltage is reversed to facilitate smoothing surfaces of the electrode.3. The system of claim 2 , wherein the polarity of the voltage is switched at a determined high frequency.4. The system of claim 1 , wherein a polarity of the voltage is reversed to at least partially dissolve the electrode.5. The system of claim 1 , wherein the system comprises:a plurality of electrodes of lattice structures, wherein each of the electrodes and the workpiece are intertwined with each other and electrically isolated from each other;wherein the electrolyte supply is configured for circulating the electrolyte around and between the workpiece and each of the electrodes; andwherein the power supply is configured for applying the voltage between the workpiece and each of the electrodes to facilitate smoothing surfaces of the workpiece.6. The system of claim 5 , wherein a polarity of the voltage between the workpiece and each of the ...

Подробнее
Номер записи: 48
14-05-2015 дата публикации

Gap detection apparatus

Номер: US20150129423A1
Автор: Shao-Han Chang
Принадлежит: Hon Hai Precision Industry Co Ltd

A gap detection apparatus for determining in real time the gap required for electrochemical machining gap includes a tooling electrode, a plurality of tool adjusting electrodes, a feedback circuit, a processing feed mechanism for controlling the tooling electrode, a three-dimensional driving mechanism, and an automatic control and measurement system. The tooling electrode includes a plurality of through-holes for receiving tool adjusting electrodes. The three-dimensional driving mechanism is mounted upon the processing feed mechanism, which includes a Z-coordinate feeding portion having a thimble for the feeding of the tool adjusting electrodes. The automatic control and measurement system controls the feed of the processing feed mechanism and the three-dimensional driving mechanism, and establishes the required gap for electrochemical machining.

Подробнее
Номер записи: 49
16-04-2020 дата публикации

Device and Method for Deburring of Metal Workpiece

Номер: US20200114445A1
Автор: Liu Jianfei, Wang Ji, Zong Xuemei
Принадлежит:

The present disclosure relates to a deburring device and method for a metal workpiece. The deburring device for the metal workpiece includes a power source, an insulating tube, a tank and an electrolyte contained in the tank. A first end of the insulating tube communicates with the electrolyte, and a second end thereof projects into a hole with burrs to be removed in the workpiece. A first pole of the power source is conductive with the workpiece, and a second pole thereof is configured to be conductive with the electrolyte. A gas layer can be formed when the power source is turned on and the electrolyte is introduced into the burr location in the hole through the insulating tube, and the gas layer is broken down under the action of a voltage to remove the burrs. 1. A deburring device for a metal workpiece , comprising:a tank for containing an electrolyte;an insulating tube, a first end of the insulating tube communicating with the electrolyte, and a second end of the insulating tube configured to stretch into a hole with burrs to be removed in a workpiece; anda power source, a first pole of the power source configured to be conductive with the workpiece, and a second pole of the power source being conductive with the electrolyte;wherein when the power source is turned on, the electrolyte is introduced into the burr position of the hole through the insulating tube and forms a gas layer, and the gas layer is broken down under the action of a voltage so as to remove the burrs.2. The deburring device for a metal workpiece of claim 1 , wherein the second end of the insulating tube stretches into a location close to the burrs in the hole.3. The deburring device for a metal workpiece of claim 1 , wherein the workpiece is entirely located outside the electrolyte.4. The deburring device for a metal workpiece of claim 3 , further comprising a first wire claim 3 , a first end of the first wire is connected with the second pole of the power source claim 3 , and a second end of ...

Подробнее
Номер записи: 50
11-05-2017 дата публикации

MODULAR ELECTROCHEMICAL MACHINING APPARATUS

Номер: US20170129030A1
Автор: Petrosky Lyman J.
Принадлежит: WESTINGHOUSE ELECTRIC COMPANY LLC

An electrochemical machining apparatus is modular and includes a power module, an electrolyte processing module, an actuator module, and a control module that are connected with one another via a connection apparatus. The components are modular and are mounted on separate supports, many of which additionally include caster, and the connection apparatus is in the form of a removable umbilical. The modules can be individually moved to a location within a facility where a component is installed, and the modules can be interconnected to form the modular electrochemical machining apparatus at the location of the installed component. The apparatus can then perform an electrochemical machining operation in situ on the installed component. 1. A modular electrochemical machining apparatus structured to be moved to a location within a facility where a component is installed and to perform an electrochemical machining operation on the component , the modular electrochemical machining apparatus comprising:a power module comprising a power supply and a first support, the power supply being situated on the first support;an electrolyte apparatus comprising an electrolyte processing module, the electrolyte processing module comprising a fluid circulation system structured to carry and circulate a quantity of electrolyte material and a second support, at least a portion of the fluid circulation system being situated on the second support, the second support being separate from the first support;a drive apparatus comprising an actuator module, the actuator module comprising an actuator and a third support, the third support being separate from the first support and the second support and being structured to be affixed to at least one of the component and another structure of the facility that is situated in proximity to the component, the actuator comprising a movable portion that is movable with respect to the third support between a first position with respect to the component and ...

Подробнее
Номер записи: 51
01-09-2022 дата публикации

METHOD AND APPARATUS FOR MACHINING COMPONENTS BY MEANS OF ELECTROCHEMICAL MACHINING

Номер: US20220274195A1
Автор: DOLL Christian, Feiling Nicole, Huttner Roland, Zeis Markus
Принадлежит: MTU Aero Engines AG

The invention relates to a method machining a particularly planar component by means of electrochemical machining, wherein the component has internal stresses resulting particularly from preceding manufacturing steps. In a first step a) of the method, the component to be machined is provided. Subsequently, in step b), at least two tools are provided in the form of electrodes and, in step c), an electrolyte is provided between the component and the at least two electrodes. In step d), a positive voltage is applied to the component and a negative voltage is applied to the at least two electrodes. Thus, in step e), by moving the at least two electrodes along their respective movement paths with respect to the component, electrochemical machining can take place; in the process, the gap between each electrode and the component is flushed with the electrolyte at least intermittently. 1. A method for machining a substantially planar component by electrochemical machining , wherein the component has internal stresses resulting from preceding manufacturing steps , comprising the steps of:a) providing the component to be machined;b) providing at least two tools in the form of electrodes;c) providing an electrolyte between the component and the at least two electrodes;d) applying a positive voltage to the component and applying a negative voltage to the at least two electrodes;e) electrochemical machining by moving the at least two electrodes along their respective movement paths with respect to the component, whereby a gap between each electrode and the component is flushed with the electrolyte at least intermittently;wherein the electrochemical machining by the at least two electrodes that are arranged distributed on the component takes place parallel in time and with electrodes separated in space from each other, the respective movement paths thereof running parallel at least in sections or at an angle to an axis of the component arranged in the direction of a short ...

Подробнее
Номер записи: 52
30-04-2020 дата публикации

ELECTROCHEMICAL MACHINE CAPABLE OF REMOVING ELECTROLYTIC PRODUCT

Номер: US20200130083A1
Автор: Kim Sung Bin, KO Kun Woong
Принадлежит: ANYCASTING CO., LTD.

Provided is an electrochemical machine. More particularly, provided is an electrochemical machine which removes an electrolytic product generated while electrochemical machining (ECM) so as to improve the quality of ECM and allows micro ECM. The electrochemical machine according to an embodiment of the present invention may include: a processing tub filled with an electrolyte; a processed object immersed in the electrolyte filled in the processing tub; a storage unit for storing the electrolyte; an electrolyte supply unit for supplying the electrolyte stored in the storage unit to the processing tub; a manifold comprising an inflow path, to which the electrolyte supplied by the electrolyte supply unit flows, and an outflow path connected to the inflow path for discharging the electrolyte flowing to the inflow path to the processed object, wherein a discharge hole of the outflow path is immersed in the electrolyte filled in the processing tub; an electrode which is fixed to the manifold so as for one end thereof to pass the outflow path and to be projected toward a lower part of the discharge hole and is electrically connected to the processed object; and a power unit for supplying power to the electrode and the processed object. 1. An electrochemical machine comprising:a processing tub filled with an electrolyte;a processed object immersed in the electrolyte filled in the processing tub;a storage unit for storing the electrolyte;an electrolyte supply unit for supplying the electrolyte stored in the storage unit to the processing tub;a manifold comprising an inflow path, to which the electrolyte supplied by the electrolyte supply unit flows, and an outflow path connected to the inflow path for discharging the electrolyte flowing to the inflow path to the processed object, wherein a discharge hole of the outflow path is immersed in the electrolyte filled in the processing tub;an electrode which is fixed to the manifold so as for one end thereof to pass the outflow ...

Подробнее
Номер записи: 53
31-05-2018 дата публикации

A SURGICAL IMPLANT CONDUCTOR WITH INCREASED RADIO FREQUENCY ALTERNATING CURRENT RESISTANCE

Номер: US20180147405A1
Автор: McCabe Steven Owen, Scott Jonathan Brereton
Принадлежит:

In one aspect the invention provides a surgical implant conductor formed from a length of conductive material which exhibits increased radio frequency alternating current resistance. This conductive material defines an exterior surface where at least a portion of the exterior surface of the conductor defines a region with a roughened surface. Preferably the roughening of the exterior surface increases the area of the exterior surface when compared to a non-roughened surface, resulting in a reduction in the effective cross-section area of the conductor used to transport alternating currents. 1. A surgical implant conductor with increased radio frequency alternating current resistance formed from a length of conductive material which defines an exterior surface wherein at least a portion of the exterior surface of the conductor defines a region with a roughened surface.2. A surgical implant conductor as claimed in wherein the roughening of the exterior surface increases the area of the exterior surface when compared to a non-roughened surface.3. A surgical implant conductor as claimed in wherein the roughened exterior surface of the implant conductor results in a reduction in the effective cross-section area of the conductor used to transport alternating currents.4. A surgical implant conductor as claimed in wherein a roughened region of the exterior surface results in an increase of at least two times the surface area of the exterior surface when compared with a non-roughened surface.5. A surgical implant conductor as claimed in wherein a roughened region of the exterior surface results in an increase of between five to ten times the surface area of the exterior surface when compared with a non-roughened surface.6. (canceled)7. (canceled)8. A surgical implant conductor as claimed in wherein the roughened surface region or regions are covered by an insulating enclosure applied to the conductor.9. A surgical implant conductor as claimed in wherein the roughened surface ...

Подробнее
Номер записи: 54
17-06-2021 дата публикации

TOOL FOR MACHINING FESTOONS AND ATTACHMENT HOLES OF A DISC FLANGE BY PECM AND METHOD USING THIS TOOL

Номер: US20210178501A1
Автор: AUVRAY Estelle Michèle Nicole, LECOMTE Janvier François, TALLON Sophie Anne-Laure
Принадлежит: SAFRAN AIRCRAFT ENGINES

Tooling for producing scallops and fastening holes of a clamp of a disc by electrochemical machining using an electrolyte, the tooling having: an annular support tray to receive the disc; lower and upper shields configured to protect the disc from splashes of the electrolyte; a clamping lock to hold the disc in position during machining; and a die-sinking tool having in a substantially cylindrical insulating body a first and a second coaxial conductive cathode, the first and second cathodes rigidly fastened to each other, the first annular cathode including at an external periphery a plurality of radial machining protrusions of a shape complementary to that of the scallops to be machined and the second cathode includes, on the same circumference external to the first cathode relative to the central axis of the disc, a plurality of axial machining nozzles of a shape similar to the fastening holes to be machined. 1. A tooling for producing scallops and fastening holes of a clamp of a disc by electrochemical machining using an electrolyte , the tooling comprising: an annular support tray to receive said disc; lower and upper shields configured to protect said disc from splashes of the electrolyte; a clamping lock to hold said disc in position during the machining; and a die-sinking tool comprising in a substantially cylindrical insulating body a first and a second coaxial conductive cathode , said first and second cathodes being rigidly fastened to each other , characterized in that the first annular cathode includes at an external periphery a plurality of radial machining protrusions of a shape complementary to that of the scallops to be machined and the second cathode includes , on the same circumference external to the first cathode relative to the central axis of the disc , a plurality of axial machining nozzles of a shape similar to that of the fastening holes to be machined.212. The tooling for producing scallops and fastening holes of a clamp of a disc by ...

Подробнее
Номер записи: 55
01-06-2017 дата публикации

ELECTROCHEMICAL MACHINING APPARATUS WITH CLAMPING DEVICE AND ELECTRODE ALIGNED IN THE SAME DIRECTION

Номер: US20170151617A1
Автор: HSIEH Yao-Chung, TSAI YUNG-FANG
Принадлежит:

An electrochemical machining apparatus with a clamping device and an electrode aligned in the same direction includes a platen, a lower seat, an anode electrode and a cathode electrode. The platen and the lower seat are located relatively for clamping. A working space is formed between the platen and the lower seat for allowing a workpiece to be placed therein. The anode electrode is disposed on the platen and is electrically connected to the workpiece. The cathode electrode is disposed inside the lower seat and is corresponding to the working space. An isolation layer is disposed between the cathode electrode and the lower seat to avoid an electrical connection. A working gap with a constant distance is preserved between the cathode electrode and the workpiece for allowing an electrolyte to flow therethrough and performing electrochemical machining. 1wherein the platen and the lower seat are located relatively for clamping; a working space is formed between the platen and the lower seat for allowing a workpiece to be placed therein the anode electrode is disposed on the platen and is electrically connected to the workpiece, the cathode electrode is disposed inside the lower seat and is corresponding to the working space, an isolation layer is disposed between the cathode electrode and the lower seat to avoid an electrical connection, a working gap with a constant distance is preserved between the cathode electrode and the workpiece for allowing an electrolyte to flow therethrough and performing electrochemical machining;thus, the anode electrode is electrically connected to the workpiece, the cathode electrode is corresponding to a portion desired to be cut of the workpiece, and a voltage is subsequently applied to enable the electrolyte to flow through the working gap so as to perform electrochemical machining to cut the workpiece and form a groove shape configured by the cathode electrode.. An electrochemical machining apparatus with a clamping device and an ...

Подробнее
Номер записи: 56
01-06-2017 дата публикации

SIMULATION APPARATUS OF WIRE ELECTRIC DISCHARGE MACHINE HAVING FUNCTION OF DETERMINING WELDING POSITIONS OF CORE USING MACHINE LEARNING

Номер: US20170151618A1
Автор: SHIRAI Kenichiro
Принадлежит:

A simulation apparatus of a wire electric discharge machine that performs machining to cut out a core from a workpiece calculates a position and a length of a welding part used to weld the core to the workpiece, calculates an evaluation value of the position and the length, and performs machine learning of the adjustment of the position and the length. In the machine learning, the position and the length of the welding part and the evaluation value are acquired as state data, a reward is calculated based on the state data and calculated reward conditions, and the machine learning of the adjustment of the position and the length of the welding part is performed using the calculated reward. 1. A simulation apparatus of a wire electric discharge machine that performs machining to cut out a core from a workpiece based on machining preconditions including a program , the simulation apparatus comprising:a welding part calculation section that calculates and outputs, when the core is cut out from the workpiece, a position and a length of a welding part formed on a machining path for the machining to weld the core to the workpiece;an operation evaluation section that calculates an evaluation value used to evaluate the position and the length of the welding part output from the welding part calculation section; anda machine learning device that performs machine learning of an adjustment of the position and the length of the welding part, whereinthe machine learning device hasa state observation section that acquires the position and the length of the welding part and the evaluation value as state data on the welding part,a reward conditions setting section that sets reward conditions,a reward calculation section that calculates a reward based on the state data and the reward conditions,a welding-part adjustment learning section that performs the machine learning of the adjustment of the position and the length of the welding part, anda welding-part adjustment output section ...

Подробнее
Номер записи: 57
01-06-2017 дата публикации

Electrochemical machining apparatus for forming turbine blades

Номер: US20170151620A1
Автор: Yao-Chung HSIEH, Yung-Fang Tsai
Принадлежит: Intai Technology Corp

An electrochemical machining apparatus for forming turbine blades includes a main base, an upper seat and an electrode unit. The main base includes a working platform for allowing a turbine blade to be placed thereon. The working platform includes an upper step stage for resisting the turbine blade, and a lower step stage for keeping a predetermined working space from a portion of the turbine blade desired to be cut. The main base has a guiding channel for allowing an electrolyte to flow through the predetermined working space. The upper seat is configured to cover above the main base and to contact one side of the turbine blade to form an electrical connection. The electrode unit includes an anode electrode electrically connected to the upper seat and at least one cathode electrode disposed on the main base.

Подробнее
Номер записи: 58
09-06-2016 дата публикации

Electrochemical Method for Transferring Graphene

Номер: US20160159064A1
Автор: Amato Letizia, Bøggild Peter, Booth Timothy John, Kostesha Natalie, Pizzocchero Filippo
Принадлежит:

The present application discloses a method for separating a graphene-support layer laminate from a conducting substrate-graphene-support layer laminate, using a gentle, controllable electrochemical method. In this way, substrates which are fragile, expensive or difficult to manufacture can be used—and even re-used—without damage or destruction of the substrate or the graphene. 1. A method for separating a graphene-support layer laminate from a conducting substrate-graphene-support layer laminate , said method comprising the steps of: [ i. providing a conducting substrate upon which graphene has been deposited;', 'ii. coating said graphene with a layer of support layer precursor;, 'at least one working electrode (WE), at least one of which being said conducting substrate-graphene-support layer laminate (WE1), wherein said substrate-graphene-support layer laminate is manufactured by, 'at least one reference electrode (RE),', 'at least one counter electrode (CE), and', 'at least one electrolyte (E) connecting said at least one working electrode (WE, WE1), said at least one reference electrode (RE) and said at least one counter electrode (CE), wherein said working electrode being said conducting substrate-graphene-support layer laminate (WE1) is in contact with a liquid electrolyte (E1) having a neutral or basic pH; and, 'a. providing a N-electrode electrochemical system, where N is 3 or more, said N-electrode electrochemical system comprisingb. applying a voltage at least between the working electrode (WE) which is said conducting substrate-graphene-support layer laminate (WE1) and at least one of said at least one counter electrodes (CE), and measuring the voltage between the working electrode (WE) which is said conducting substrate-graphene-support layer laminate (WE1) and at least one of said at least one reference electrodes (RE), such that the graphene-support layer laminate separates from said conducting substrate.2. The method according to claim 1 , further ...

Подробнее
Номер записи: 59
28-08-2014 дата публикации

MODIFIED BUBBLING TRANSFER METHOD FOR GRAPHENE DELAMINATION

Номер: US20140238873A1
Автор: Li Xuesong, Stehle Yijing Yin
Принадлежит:

In the BB transfer, or so called electrochemical delamination process, a transfer film is firstly spray-coated on a stack formed by two graphene sandwiching a metal (Cu or Cr) foil as a protection layer. Then, direct current (dc) voltage is applied to the first stack as a cathode and an anode (from be a platinum wire, a carbon rod, or others) in an electrolyte aqueous solution. With application of the electrolysis potential, hydrogen bubbles appear at the graphene/metal foil interfaces, while oxygen bubble appear at the anode due to the reduction of water. These Hbubbles provide a gentle but persistent force to detach the graphene film from the copper foil at its edges, and the process is aided by the permeation of the electrolyte solution into the interlayers as the edges delaminate. 1. A modified bubbling transfer method for graphene delamination comprising the steps ofpreparing the electrolyte solution for water electrolysis, pre-coating a transfer film on the upper graphene film of a first stack of an upper graphene film, a metal foil and a lower graphene film and connect with conducting wire to serve as a positive electrode,preparing a negative electrode;locating the positive and negative electrodes in the electrolyte solution and connecting to a DC power supply;locating a non conductive transfer cloth between the two electrodes for separating the two electrodes;switching on the DC power supply to begin the electrochemical delamination process, a second stack formed by the transfer film and the upper graphene film gradually separating from the metal foil;lifting the second stack of the transfer film and the upper graphene film from the metal foil with the transfer cloth and the negative electrode being parallel as close as they could be, and the transfer cloth gradually attaching to a bottom of the first graphene film which is separated from the metal foil and an exposed upper surface of the metal foil;dipping the lift up the third stack formed by the transfer ...

Подробнее
Номер записи: 60
23-05-2019 дата публикации

METHOD AND APPARATUS FOR PRODUCING RIFLINGS IN BARRELS OF GUNS

Номер: US20190154383A1
Автор: GÖHRINGER Robin, TURLAKOV MAXIM
Принадлежит:

The present invention concerns a method for producing riflings in barrels of guns including a barrel as a workpiece which defines an axis A in its longitudinal direction and which has a bore lying in the longitudinal direction which defines an inner wall of the barrel and a tool comprising a tool head , which has an outer contour corresponding to the shape of the riflings to be produced, consisting of an electrically conductive material, wherein an electrolyte solution is pumped through the bore of the barrel , while the tool is guided through the bore of the barrel , wherein a pulsed electrical voltage is applied to workpiece and tool , with which a direct current is generated, the workpiece being the anode and the tool head being the cathode, the barrel being positioned vertically with its longitudinal direction, wherein between the electrically conductive outer contour of the tool head and the inner wall of the barrel there is a gap surrounding the tool head , through which the electrolyte solution flows, and the tool being moved relatively to the workpiece through the bore of the barrel during the application of the pulsed voltage and simultaneously rotated about the axis A, thereby producing the riflings on the inner wall of the bore, and means for carrying out the method. 1. A method for producing riflings in barrels of guns comprising a barrel as a workpiece , which defines an axis in its longitudinal direction and which has a bore extending in the longitudinal direction , which defines an inner wall of the barrel , and a tool , having a tool head which has an outer contour , consisting of an electrically conductive material , which corresponds to the shape of the riflings to be produced , wherein an electrolyte solution is passed through the bore of the barrel , while the tool is guided through the bore of the barrel ,characterized in thata pulsed electrical voltage is applied to the workpiece and tool, with which a direct current is generated,the workpiece ...

Подробнее
Номер записи: 61
14-06-2018 дата публикации

Inductive electrochemical machining device

Номер: US20180161897A1
Автор: Chen-Wei Wu, Chin-Hung Wen, Chin-Wei Liu, Da-Yu Lin, Kun-Chin Lan, You-Lun Chen, zhi-wen Fan
Принадлежит: METAL INDUSTRIES RESEARCH AND DEVELOPMENT CENTRE

The present invention provides an inductive electrochemical machining device, which comprises a base, an inductive machining electrode, and a negative cleaning module. The base includes a workpiece machining zone. The inductive machining electrode is disposed on the base and corresponds to said workpiece machining zone. The negative cleaning module is opposing to the inductive machining electrode. When the inductive machining electrode performs electrochemical machining, the generated induction current may be used for machining. In addition, the surface of the inductive machining electrode may be cleaned concurrently by the negative cleaning module.

Подробнее
Номер записи: 62
14-06-2018 дата публикации

ELECTROCHEMICAL MACHINING DEVICE

Номер: US20180161898A1
Автор: CHANG CHEN-HUI, CHEN HUNG-YI, Chen You-Lun, FAN ZHI-WEN, LAN KUN-CHIN, LIN DA-YU, Liu Chin-Wei, Wu Chen-Wei
Принадлежит:

The present invention relates to an electrochemical machining device, which comprises a machining electrode, a driving module, a spacer, and a conductive electrode. The machining electrode includes an electrochemical machining zone. The driving module drives the machining electrode. The spacer is adjacent to the machining electrode. The conductive electrode is adjacent to the spacer. The spacer spaces the conductive electrode and the machining electrode. When the electrochemical machining device performs electrochemical processes, the driving module drives the machining electrode and moves a machining surface of the machining electrode. 1. An electrochemical machining device , comprising:a machining electrode, having an electrochemical machining zone;a driving module, driving said machining electrode, and moving a machining surface of said machining electrode;an insulating spacer, adjacent to said machining electrode; anda conductive electrode, adjacent to said insulating spacer;wherein said insulating spacer spaces said conductive electrode and said machining electrode; and said machining electrode, said insulating spacer and said conductive electrode are arranged coaxially and perpendicularly.2. (canceled)3. The electrochemical machining device of claim 1 , wherein said electrochemical machining zone is a corresponding region of a curved side surface of said machining electrode; a side surface of said conductive electrode is curved; a side surface of said insulating spacer is curved; and said side surface of said insulating spacer is adjacent to said side surface of said conductive electrode.4. The electrochemical machining device of claim 1 , further comprising a pressing member opposing said conductive electrode.5. The electrochemical machining device of claim 1 , wherein said machining electrode claim 1 , said insulating spacer claim 1 , and said conductive electrode are disc-shaped; said driving module drives said machining electrode to rotate for moving said ...

Подробнее
Номер записи: 63
30-05-2019 дата публикации

DEVICES AND METHODS FOR MARKING CONDUCTIVE OBJECTS

Номер: US20190160568A1
Автор: Barthel Michael R., CHOU Champin, Sedlacek Walter J., SPITLER Douglas A.
Принадлежит: Saunders Midwest LLC

A marker apparatus includes a housing, a current controller that is electrically connected to an electrode, a pad connected to the electrode for retaining an electrolytic fluid, and a removable cover. The removable cover retains an insulated stencil to an outer surface of the pad. The insulated stencil defines at least one permeable portion therein and a portion of the outer surface of the pad adjoins the at least one permeable portion. The at least one permeable portion can be formed as at least one opening defined through the insulated stencil, in which the portion of the outer surface of the pad extends into the at least one opening. The current controller provides an electric current from the electrode through the at least one permeable portion that is electrically connected to an object to be marker. The marker apparatus can include an on-board reservoir of electrolytic fluid and an actuator. 1. An apparatus comprising:a housing;a current controller disposed within the housing, the current controller electrically connected to an electrode and a target surface connector, the current controller configured to be electrically connected to a power source; and a pad connected to the electrode and configured to retain an electrolytic fluid; and', 'a cover removably coupled to the housing, the cover configured to retain an insulated stencil to an outer surface of the pad, the insulated stencil defining at least one permeable portion therein, a portion of the pad adjoining the at least one permeable portion when the cover retains the insulated stencil to the outer surface of the pad., 'a metal marker assembly mounted to the housing, the metal marker assembly configured to contact a target surface to be marked, the metal marker assembly outlining a surface area to be marked on the target surface, the metal marker assembly including2. The apparatus of claim 1 , wherein a distal end of the target surface connector is disposed at a portion of the metal marker assembly ...

Подробнее
Номер записи: 64
25-06-2015 дата публикации

Multipurpose electrical discharge machining tool for a ring sector

Номер: US20150174676A1
Автор: Antoine Marty, Bruno Giardini, Etienne Canelle, Frederic Hascoet, Julien Arnould, Matthieu Lebastard, Xi Tian
Принадлежит: SNECMA SAS

The invention relates to an electrical discharge machining tool of a ring sector for an aircraft turbomachine. The ring sector comprises an abradable member and a support element to which the abradable member is fixed. The ring sector comprises one or more gripping holes opening on a radially outer surface of a central body of the support element. The machining tool comprises at least two machining sets chosen from groove, notch, opening, length-cutting, or abradable element electro-machining sets. The machining tool also has a gripping device for the ring sector by means of the gripping holes. The gripping device is configured to move the ring sector from one of the electro-machining sets to another of the electro-machining sets.

Подробнее
Номер записи: 65
11-09-2014 дата публикации

ETCHING DEVICE FOR THE ELECTROLYTIC ETCHING OF COPPER

Номер: US20140251797A1
Автор: Herkle Christoph
Принадлежит:

An etching device for the electrolytic etching of copper on an etching material, includes a first mixing device, which is designed to receive an acid electrolyte containing copper ions, and an oxygen gas or ozone gas in order to form a first liquid-gas mixture which can be channeled from a first outlet of the first mixing device into a connecting line coupled thereto; a container, which contains a container liquid, a second mixing device, which is arranged in the container and is surrounded by the container liquid, wherein the second mixing device includes a suction opening in order to suction in the container liquid present in the region of the suction opening, wherein the second mixing device is connected to the connecting line and is designed to channel the first liquid-gas mixture and the suctioned container liquid into a constricted zone of the second mixing device so that the suctioned container liquid mixes with the first liquid-gas mixture and is thus able to form a second liquid-gas mixture, wherein the second mixing device has a second outlet out of which the second liquid-gas mixture is able to flow and mix with the container liquid present in the region of the second outlet, and a container outlet line, which is designed to feed the container liquid present there to the etching material provided in an etching module.

Подробнее
Номер записи: 66
30-05-2019 дата публикации

MEASUREMENT SYSTEM, MACHINING SYSTEM, MEASUREMENT METHOD, AND COMPUTER-READABLE RECORDING MEDIUM

Номер: US20190162531A1
Автор: Kobayashi Tetsuhei, ONODERA Sho
Принадлежит:

A measurement system is for measuring positions of a plurality of subjects by using an ultrasonic testing sensor. The measurement system includes an ideal arcuate waveform creation unit configured to create, for each of the subjects, an ideal arcuate waveform of a measurement result of the ultrasonic testing sensor based on machining position information on the subject; a measurement arcuate waveform creation unit configured to create a measurement arcuate waveform based on the measurement result; a position estimation unit configured to collate the ideal arcuate waveform and the measurement arcuate waveform with each other to estimate a position of the subject from the measurement arcuate waveform determined to correspond to any ideal arcuate waveform; and an antiphase waveform addition unit configured to add, to the measurement arcuate waveform, a waveform in antiphase to the measurement arcuate waveform with which the position of the subject has been estimated. 1. A measurement system for measuring positions of a plurality of subjects by using an ultrasonic testing sensor , the measurement system comprising:an ideal arcuate waveform creation unit configured to create, for each of the subjects, an ideal arcuate waveform of a measurement result of the ultrasonic testing sensor based on machining position information on the subject;a measurement arcuate waveform creation unit configured to create a measurement arcuate waveform based on the measurement result;a position estimation unit configured to collate the ideal arcuate waveform and the measurement arcuate waveform with each other to estimate a position of the subject from the measurement arcuate waveform determined to correspond to any ideal arcuate waveform; andan antiphase waveform addition unit configured to add, to the measurement arcuate waveform, a waveform in antiphase to the measurement arcuate waveform with which the position of the subject has been estimated.2. The measurement system according to ...

Подробнее
Номер записи: 67
01-07-2021 дата публикации

DEVICE AND METHOD FOR ELECTROCHEMICALLY PROCESSING A MATERIAL

Номер: US20210197302A1
Автор: JUNKER Nils, Schneider Michael
Принадлежит: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.

The invention relates to a method and a device for electrochemically processing a material, which contains a hard phase and a binder phase. The method comprises preparing an aqueous, alkaline, complexing-agent-containing electrolyte and bringing the material to be processed into contact at least in part with the electrolyte and with a current source. In order to electrochemically oxidize the material, a pulsed electrical current is delivered to the material by means of the current source, the pulse sequence of the delivered electrical current being adjusted to the amount of the binder phase in the material to be processed. By means of the method and by means of the device, it is also possible to process materials having a high content of binder phase in such a way that matter can be removed from the material evenly (homogeneously), i.e. both from the hard phase and from the binder phase of the material. 115-. (canceled)16. A method for electrochemical machining of a material which comprises a hard phase and a binder phase , comprising the steps of:(a) providing an aqueous, alkaline electrolyte which includes an electrode which is connected to a first pole of a direct current source;(b) at least partially contacting a material to be machined with the aqueous, alkaline electrolyte, the material comprising a hard phase and a binder phase;(c) electrically contacting the material with a second pole of the direct current source; and(d) supplying a pulsed electrical current to the material via the direct current source for electrochemical oxidation of the material, the pulsed current having a specific pulse sequence;wherein the electrolyte comprises a complexing agent which is suitable for complexing at least one metal ion of the binder phase, the pulse sequence of the pulsed current supplied by the direct current source being adjusted to the quantity of binder phase in the material to be machined.17. The method according to claim 16 , wherein a material is machined claim ...

Подробнее
Номер записи: 68
06-06-2019 дата публикации

Electrochemical machining device

Номер: US20190168325A1
Автор: Chia-Wei Cheng, Yung-Fang Tsai
Принадлежит: Intai Technology Corp

An electrochemical machining device includes a plurality of electrodes, a guiding member and a plate member. The electrodes are disposed around a workpiece. The guiding member is configured to limit and guide each of the electrodes to move. The plate member is configured to exert a force to each of the electrodes. The driving member is configured to rotate the workpiece. The plate member is connected to each of the electrodes. A force-exerting direction of the force from the plate member to each of the electrodes is parallel to a central axis of each of the electrodes or deflects off the central axis. Each of the electrodes is passed through the guiding member and configured to perform a machining on the workpiece which is rotated by the driving member, and each of the electrodes has an electrochemical machining direction which is perpendicular, oblique or parallel to the workpiece.

Подробнее
Номер записи: 69
06-06-2019 дата публикации

ELECTROCHEMICAL MACHINING APPARATUS FOR GEAR OUTLINE

Номер: US20190168326A1
Автор: CHEN HUNG-YI, Chen You-Lun, FAN ZHI-WEN, LIN CHIU-FENG, LIN DA-YU, Liu Chin-Wei, Wu Chen-Wei
Принадлежит:

The present invention relates to an electrochemical machining apparatus for gear outline, which is used for trimming the gear outline of the gear part of a workpiece and comprises a first moving mechanism, a second moving mechanism, a cathode electrode, and a gear alignment member. The cathode electrode is disposed at the first moving mechanism. The second moving mechanism is connected with the gear alignment member. The gear alignment member includes a plurality of alignment gears for aligning the location of a plurality of teeth of the gear part of the workpiece. Thereby, the plurality of teeth of the workpiece may correspond to the cathode electrode. Then, the cathode electrode may perform electrochemical machining on the plurality of teeth, and thus, trimming the outline of the plurality of teeth. 1. An electrochemical machining apparatus for gear outline , comprising:a base;a first moving mechanism, disposed on said base;a cathode electrode, disposed at said first moving mechanism;a gear alignment member, disposed on said base, and including a plurality of alignment teeth; anda second moving mechanism, disposed on said base and connected with said gear alignment member.2. The electrochemical machining apparatus for gear outline of claim 1 , and further comprising a contour alignment structure claim 1 , disposed on said base claim 1 , and said gear alignment member put coaxially around said contour alignment structure.3. The electrochemical machining apparatus for gear outline of claim 2 , wherein said gear alignment member includes a plurality of first alignment parts spaced to one another claim 2 , and said plurality of first alignment parts including said plurality of alignment teeth claim 2 , respectively; said contour alignment structure includes a plurality of second alignment parts spaced to one another; said gear alignment member is coaxially put around said contour alignment structure; said plurality of first alignment parts of said gear alignment ...

Подробнее
Номер записи: 70
02-07-2015 дата публикации

WIRE ELECTRIC DISCHARGE MACHINE AND MACHINING PASS GENERATING APPARATUS FOR WIRE ELECTRIC DISCHARGE MACHINE

Номер: US20150183038A1
Автор: HIRAGA Kaoru, TAKEMOTO Masanobu
Принадлежит:

A key groove is cut in the center along a machining route with a wire electrode and machined to a key bottom surface of the key groove. When the machining reaches the key bottom surface of the key groove, the key groove bottom surface is machined to the left in the figure. When the machining reaches a key groove side surface, the key groove side surface is machined toward a key groove inlet. Subsequently, the key groove is cut in the center along a machining route to be machined to the key groove bottom surface of the key groove. When the machining reaches the key groove bottom surface of the key groove, the key groove bottom surface is machined to the right in the figure. When the machining reaches a key groove side surface, the key groove side surface is machined toward the key groove inlet. 1. A machining pass generating apparatus for a wire electric discharge machine configured to generate a machining pass for machining a key groove on a side surface of a round hole ,the machining pass generating apparatus comprising:a key groove defining unit configured to define a shape of the key groove to be machined;a hole diameter designating unit configured to designate a diameter of the round hole;a hole position designating unit configured to designate a position of the round hole; anda machining pass generating unit configured to generate a machining pass, the pass suppresses an opening of the key groove from being narrowed.2. The machining pass generating apparatus for the wire electric discharge machine according to claim 1 , wherein the machining pass generating unit is configured to generate a machining pass for machining side surfaces of the key groove such that claim 1 , on both the side surfaces claim 1 , a wire moves from a bottom to the opening of the key groove.3. The machining pass generating apparatus for the wire electric discharge machine according to claim 1 , wherein the machining pass generating unit is configured to generate a chamfered section or a ...

Подробнее
Номер записи: 71
06-06-2019 дата публикации

TOOL SETTING DEVICE AND TOOL-SETTING METHOD FOR ELECTROCHEMICAL MACHINING

Номер: US20190171185A1
Автор: CHIANG Wen-Chin, LIN CHIU-FENG, LIN DA-YU, MA MING-YOU
Принадлежит:

The present invention relates to a tool setting device and tool-setting method for electrochemical machining. The tool setting device comprises a motion module, a detection circuit, and a tool setting circuit. The motion module moves a machining electrode. The detection circuit detects an electrical status of the machining electrode and outputs an electrical signal. The tool setting circuit performs calculations according to the electrical signal and gives a change status of the electrical signal. In addition, the tool setting circuit controls the motion module according to the change status of the electrical signal for completing the tool setting procedure. 1. A tool setting device for electrochemical machining , comprising:a motion module, moving a machining electrode;a detection circuit, detecting an electrical status of said machining electrode, and outputting an electrical signal; anda tool setting circuit, performing calculations according to said electrical signal and giving a change status of said electrical signal, controlling said motion module according to said change status of said electrical signal.2. The tool setting device for electrochemical machining of claim 1 , wherein said tool setting circuit includes:a signal processing circuit, coupled to said detection circuit, performing calculations according to said electrical signal, and giving said change status of said electrical signal; anda signal control circuit, coupled to said signal processing circuit, controlling said motion module according to said change status of said electrical signal for controlling the moving speed of said machining electrode.3. The tool setting device for electrochemical machining of claim 2 , wherein said change status is a changing rate of said electrical signal; when said changing rate of said electrical signal is greater than a first threshold claim 2 , said signal control circuit controls said motion module to reduce the moving speed of said machining electrode; when ...

Подробнее
Номер записи: 72
28-06-2018 дата публикации

ELECTROCHEMICAL SYSTEM AND METHOD FOR ELECTROPOLISHING SUPERCONDUCTIVE RADIO FREQUENCY CAVITIES

Номер: US20180178302A1
Автор: Hall Timothy, Inman Maria E., Taylor E. Jennings
Принадлежит: FARADAY TECHNOLOGY, INC.

A method and system for electrochemically machining a hollow body of a metal or a metal alloy. An electrode is positioned within a hollow body including a metal or metal alloy, where the hollow body has a variable internal diameter. The hollow body is oriented vertically, with the electrode oriented vertically therein. The hollow body is at least partially filled with an aqueous, acidic electrolyte solution, the electrolyte solution being devoid of hydrofluoric acid and having a viscosity less than 15 cP. An electric current is passed between the hollow body and the electrode, where the electric current includes a plurality of anodic pulses and a plurality of cathodic pulses, and where the cathodic pulses are interposed between at least some of the anodic pulses. 120-. (canceled)21. A method for electrochemically machining a hollow body of a metal or metal alloy , the method comprising:positioning an electrode within a hollow body comprising a metal or metal alloy, wherein the hollow body has a variable internal diameter;orienting the hollow body vertically, with the electrode oriented vertically therein;at least partially filling the hollow body with a hydrofluoric acid free electrolyte solution having a viscosity less than 15 cP; andpassing an electric current between the hollow body and the electrode, wherein the electric current is comprised of a plurality of anodic pulses and a plurality of cathodic pulses, and wherein the cathodic pulses are interposed between at least some of the anodic pulses.22. The method of claim 21 , wherein the electrolyte solution has a viscosity less than about 4 cP.23. The method of claim 22 , wherein the electrolyte solution has a conductivity greater than about 200 mS/cm.24. The method of claim 23 , wherein the voltage and on time of the anodic pulses are adjusted to polish the hollow body while limiting the formation of passivating metal oxide to a thickness that can be removed effectively by the cathodic pulse.25. The method of ...

Подробнее
Номер записи: 73
04-06-2020 дата публикации

Method for manufacturing cone by electrochemical machining

Номер: US20200171592A1
Автор: Chen-Hui Chang, Chiu-Feng Lin, Chun-Wei Chen, Da-Yu Lin, zhi-wen Fan
Принадлежит: METAL INDUSTRIES RESEARCH AND DEVELOPMENT CENTRE

The present invention relates to an electrochemical machining method for manufacturing a cone. One or more conductive column and an electrode are driven to perform relative convolute motion. Then the conductive column is driven to perform electrochemical machining on the electrode for forming one or more hole in the electrode. Afterwards, the periphery of the hole in the electrode to perform electrochemical machining on the conductive column for forming a cone at one end of the conductive column.

Подробнее
Номер записи: 74
05-07-2018 дата публикации

High Temperature Casting and Electrochemical Machining Heat Exchanger Manufacturing Method

Номер: US20180185942A1
Автор: Apte Raj, Larochelle Philippe
Принадлежит:

Modular tubing apparatuses for use in a shell-and-tube heat exchanger are described. Multiple apparatuses may be connected in series to form a high density, small tube diameter, long length tube apparatus assembly. Casting molds for forming modular tubing apparatuses are likewise described, including methods for casting and electrochemically machining such apparatuses. 1. A mold assembly comprising: a bottom block comprising a top surface, and', 'a plurality of cavities in the bottom block extending downwardly from the top surface to a first depth;, 'a bottom mold portion comprising a top plate positioned opposite and at a first distance from the top surface of the bottom block, and', 'a plurality of protrusions extending downwardly from the top plate, wherein each protrusion of the plurality of protrusions forms a seal at the top surface of the bottom block; and, 'a top mold portion comprisinga middle mold portion comprising a wall that forms a seal between the top plate and the bottom block around the periphery of a void space between the top plate and the bottom block.2. The mold assembly of claim 1 , further comprising a second plurality of protrusions extending downwardly from the top plate to a length less than the first distance claim 1 , wherein each protrusion of the second plurality of protrusions is disposed opposite a respective cavity of the plurality of cavities claim 1 , and wherein each protrusion of the second plurality of protrusions defines an outer contour that conforms to an internal contour at a base of the respective cavity.3. The mold assembly of claim 1 , further comprising a plurality of cores extending downwardly from each protrusion of the second plurality of protrusions claim 1 , wherein each core of the plurality of cores is disposed within and extends to less than the first depth of the respective cavity of the plurality of cavities.4. The mold assembly of claim 1 , wherein each cavity of the plurality of cavities is substantially ...

Подробнее
Номер записи: 75
05-07-2018 дата публикации

Electrode, electrochemical machining apparatus using the electrode, electrochemical machining method, and product machined by the method

Номер: US20180185943A1
Автор: Hirotaro Hosoe, Hiroyuki Sunada, Takayuki Mori
Принадлежит: Hoden Seimitsu Kako Kenkyusho Co Ltd

Provided is an electrode capable of increasing a degree of freedom in machining shape with a simple structure, an electrochemical machining apparatus using the electrode, an electrochemical machining method, and a product machined by the method. An electrode 4 has a core tube 41 formed of a material by which a second hole 101 b having a direction or a curvature different from that of a first hole 101 a having a predetermined curvature can be formed continuously from the first hole 101 a and a coating 42 fixed to an outer periphery of the core tube 41.

Подробнее
Номер записи: 76
06-07-2017 дата публикации

ETCH SOLUTIONS HAVING BIS(PERFLUOROALKYLSULFONYL)IMIDES, AND USE THEREOF TO FORM ANODE FOILS WITH INCREASED CAPACITANCE

Номер: US20170191181A1
Автор: Geiculescu A. Corina, Hemphill Ralph Jason, Jiang Xiaofei, Stocker Tearl
Принадлежит:

Anode foil, preferably aluminum anode foil, is etched using a process of treating the foil in an electrolyte bath composition comprising a sulfate, a halide, an oxidizing agent, and a surface active agent. The anode foil is etched in the electrolyte bath composition by passing a charge through the bath. The etched anode foil is suitable for use in an electrolytic capacitor. 1. An electrolyte bath composition for etching anode foil , comprising:a sulfate;a halide;an oxidizing agent;and a bis(perfluoroalkylsulfonyl)imide;in an aqueous solvent.2. The composition of claim 1 , wherein the sulfate is provided by a salt or acid selected from the group consisting of sodium sulfate claim 1 , potassium sulfate claim 1 , lithium sulfate claim 1 , sulfuric acid claim 1 , and mixtures thereof.3. The composition of claim 1 , wherein the halide is provided by a salt or acid selected from the group consisting of sodium chloride claim 1 , titanium (III) chloride claim 1 , hydrochloric acid claim 1 , and any mixture thereof.4. The composition of wherein the sulfate is provided by sulfuric acid.5. The composition of claim 4 , wherein the sulfuric acid is present at about 0.92 weight percent.6. The composition of claim 1 , wherein the ratio of halide to oxidizing agent is about 2:1.7. The composition of claim 1 , wherein the bis(perfluoroalkylsulfonyl)imide is provided as an alkali metal salt or an ammonium salt.8. The composition of claim 7 , wherein the salt of the bis(perfluoroalkylsulfonyl)imide is a sodium claim 7 , potassium claim 7 , lithium claim 7 , or ammonium salt.9. The composition of claim 1 , wherein the alkyl group of the bis(perfluoroalkylsulfonyl)imide is a C-Calkyl group.10. The composition of wherein the halide is provided by hydrochloric acid.11. The composition of claim 10 , wherein the hydrochloric acid is added at about 0.62 weight percent.12. The composition of claim 1 , wherein the oxidizing agent is provided by sodium perchlorate added at about 3.5 weight ...

Подробнее
Номер записи: 77
11-06-2020 дата публикации

APPARATUS FOR ELECTROCHEMICAL MACHINING GEAR OUTLINE AND ALIGNMENT STRUCTURE THEREOF

Номер: US20200180057A1
Автор: CHANG CHEN-HUI, Chen Chun-Wei, CHEN HUNG-YI, Chen You-Lun, FAN ZHI-WEN, LIN DA-YU, WEN CHIN-HUNG
Принадлежит:

An apparatus for electrochemical machining gear outline and the alignment structure thereof is disclosed, the apparatus comprises first and second alignment members. The first and second alignment members include a plurality of first alignment teeth and second alignment teeth, respectively. Recessing a gear-outline edge of the first alignment teeth by a distance and extending a gear-outline edge of the second alignment teeth by the distance for against to each other to align the first and second alignment members. A cathode electrode includes a plurality of machining teeth with both gear-outline edges recessed by the distance for against the gear-outline edge of the second alignment teeth with the extended distance to align machining teeth. Thereby, before trimming the gear-outline of a workpiece, the machining gap between the machining teeth and the teeth of the workpiece can be aligned first. 1. An apparatus for electrochemical machining gear outline , comprising:a base,a first moving mechanism, disposed on said base;a first alignment member, connected with said first moving mechanism, including a plurality of first alignment teeth, each said first alignment tooth including a first gear-outline edge and a second gear-outline edge, and said first gear-outline edge recessed by a distance;a second alignment member, including a plurality of second alignment teeth, each said second alignment tooth including a third gear-outline edge and a fourth gear-outline edge, and said third gear-outline edge extended by said distance and leaning against said first gear-outline edge of said plurality alignment teeth;a second moving mechanism, disposed on said base; anda cathode electrode, disposed on said second moving mechanism, including a plurality of machining teeth, each said machining tooth including a fifth gear-outline edge and a sixth gear-outline edge, said fifth gear-outline edge and said sixth gear-outline edge recessed by said distance, and said fifth gear-outline edge ...

Подробнее
Номер записи: 78
23-07-2015 дата публикации

GAS TURBINE ENGINE CAST STRUCTURE METHOD FOR FINISHING

Номер: US20150202702A1
Автор: Reed Gordon Miller, Rizzo John P.
Принадлежит:

A method of finishing a cast structure includes providing a cast exterior surface with an undesired cast feature and electrochemically machining the undesired cast feature to provide a finished contour. 1. A method of finishing a cast structure , comprising:providing a cast exterior surface with an undesired cast feature; andelectrochemically machining the undesired cast feature to provide a finished contour.2. The method according to claim 1 , wherein the undesired cast feature is a gate.3. The method according to claim 1 , wherein the undesired cast feature is flashing.4. The method according to claim 1 , wherein the cast structure includes an internal passage that extends to the cast exterior surface and is covered by the undesired cast feature.5. The method according to claim 2 , comprising the step of grinding a portion of the undesired cast feature prior to performing the electrochemical machining step.6. The method according to claim 5 , wherein the grinding step includes exposing the internal passage.7. The method according to claim 6 , wherein the cast structure includes a core providing the internal passage claim 6 , and comprising the step of dissolving the core from the internal passage prior to performing the electrochemical machining step.8. The method according to claim 6 , wherein grinding step includes producing a ridge adjacent to the internal passage claim 6 , and the electrochemical machining step includes removing the ridge.9. The method according to claim 1 , wherein the providing step includes a mold manufacturing step that includes producing a meltable mold to provide a mold of the cast structure.10. The method according to claim 9 , wherein the mold manufacturing step includes surrounding a core with wax to produce the meltable mold.11. The method according to claim 9 , wherein the mold manufacturing step includes coating the meltable mold in a ceramic slurry.12. The method according to claim 9 , wherein the core is a refractory metal.13. ...

Подробнее
Номер записи: 79
27-06-2019 дата публикации

ELECTROCHEMICAL MACHINING APPARATUS AND ELECTROCHEMICAL MACHINING METHOD THEREOF

Номер: US20190193178A1
Автор: BAKER George Edward
Принадлежит:

An electrochemical machining apparatus being capable of performing multiple points and multiple angles machining is provided. The electrochemical machining apparatus includes at least one electrode member, a guiding member and an actuation member. The electrode member includes a conductive end and a free end, wherein the electrode member is rigid and unbendable. The guiding member is for limiting and guiding the electrode member to move. The actuation member is for exerting a force to the free end of the electrode member, thereby enabling the conductive end of the electrode member to form angle variations. A force-exerting direction from the actuation member to the free end is parallel to a central axis of the electrode member or deflects off the central axis so as to form the angle variations. 1. An electrochemical machining apparatus , which is capable of performing multiple points and multiple angles machining , the electrochemical machining device comprising:at least one electrode member, comprising a conductive end and a free end, wherein the electrode member is rigid and unbendable;a guiding member for limiting and guiding the electrode member to move; andan actuation member for exerting a force to the free end of the electrode member, thereby enabling the conductive end of the electrode member to form angle variations;wherein a force-exerting direction from the actuation member to the free end is parallel to a central axis of the electrode member or deflects off the central axis so as to form the angle variations.2. The electrochemical machining apparatus of claim 1 , further comprising a pressure box accommodating the guiding member claim 1 , wherein the pressure box is configured to provide a flow to an electrolyte therein.3. The electrochemical machining apparatus of claim 1 , wherein the guiding member comprises a guiding aperture claim 1 , and the electrode member is disposed through the guiding aperture.4. The electrochemical machining apparatus of ...

Подробнее
Номер записи: 80
04-07-2019 дата публикации

METHOD FOR MAKING NANOPOROUS COPPER

Номер: US20190203376A1
Автор: FU HONG-YING, Hou Ze-Cheng, LI Wen-Zhen, LIU YUAN-FENG, Meng Yue-Feng, XIONG LUN-QIAO, Zhu Lin
Принадлежит:

A method of making a nanoporous copper is provided. A copper alloy layer and at least one active metal layer are provided. The copper alloy layer comprises a first surface and a second surface. The at least one active metal layer is located on the first surface and the second surface to form a structure. The structure is processed to form a composite structure. A process of folding and pressing the composite structure is repeated to form a precursor. The precursor is corroded to form the nanoporous copper. 1. A method of making a nanoporous copper comprising:{'b': '1', 'step (S), providing a copper alloy layer and at least one active metal layer, wherein the copper alloy layer comprises a first surface and a second surface;'}{'b': '2', 'step (S), placing the at least one active metal layer on both the first surface and the second surface of the copper alloy layer to sandwich the copper alloy layer and form a structure;'}{'b': '3', 'step (S), pressing the structure to form a composite structure;'}{'b': '4', 'step (S), repeating a process of alternatively folding and pressing the composite structure to form a precursor; and'}{'b': '5', 'step (S), corroding the precursor to form the nanoporous copper.'}2. The method of claim 1 , wherein a material of the copper alloy layer comprises copper and active metal.3. The method of claim 2 , wherein the active metal is selected from zinc claim 2 , aluminum claim 2 , and nickel.4. The method of claim 1 , wherein a thickness of the copper alloy layer is about 0.03 millimeters to about 3 millimeters.5. The method of claim 1 , wherein the copper alloy layer comprises a reinforcement claim 1 , and the reinforcement is dispersed in the copper alloy layer.6. The method of claim 5 , wherein a material of the reinforcement is selected from carbon nanotube structure claim 5 , graphene claim 5 , aluminum oxide claim 5 , and silicon nitride.7. The method of claim 1 , wherein a material of the at least one active metal layer is selected ...

Подробнее
Номер записи: 81
02-08-2018 дата публикации

PATTERN TRANSFER DEVICE FOR MASS TRANSFER OF MICRO-PATTERNS ONTO MEDICAL DEVICES

Номер: US20180214617A1
Автор: GARZA Armando
Принадлежит:

This invention is directed to a new method of mass-transfer/fabrication of micro-sized features/structures onto the inner diameter (ID) surface of a stent. This new approach is provided by technique of through mask electrical micro-machining. One embodiment discloses an application of electrical micro-machining to the ID of a stent using a customized electrode configured specifically for machining micro-sized features/structures. 1. A patterned masked electrode , comprising:a. A generally cylindrical electrically conductive electrode member having an outer surface, a first end, a second end and a workpiece mounting region intermediate the first end and the second end;b. A non-conductive coating on the outer surface of the electrode member; andc. A micro-pattern defined in the non-conductive coating passing through the non-conductive coating and exposing defined portions of the electrode member, the micro-pattern corresponding to a plurality of continuous elongate slots adapted to transfer electrical energy through the micro-pattern of a plurality of continuous elongate slots to a surface of a workpiece positioned on the workpiece mounting region, and each of the plurality of continuous elongate slots extend along an entire longitudinal axis of the stent mounting region.2. The patterned masked electrode of claim 1 , wherein the non-conductive coating is of a material capable of being vacuum deposited onto the outer surface of the electrode member.3. The patterned masked electrode of claim 1 , further comprising a workpiece concentrically engaged with the electrode member such that the non-conductive coating is intermediate the electrode member and the intraluminal stent.4. The patterned masked electrode of claim 1 , wherein the non-conductive coating is made of a material capable of being applied to the electrode member by one of dipping claim 1 , spray coating claim 1 , air brushing or lamination techniques.5. The patterned masked electrode of claim 1 , wherein the ...

Подробнее
Номер записи: 82
11-07-2019 дата публикации

PRECISION ELECTROCHEMICAL MACHINE FOR GEAR MANUFACTURE

Номер: US20190210130A1
Автор: BITTNER Edward H., Gmirya Yuriy, HANSEN Bruce D., MURPHY WILLIAM PATRICK, MUSSEL CHRISTOPHER J.
Принадлежит:

A method of manufacturing a gear, the method includes applying a first charge to a workpiece and applying a second, opposite charge to an electrochemical machining (ECM) attachment, the ECM attachment having a pattern. The method further includes simultaneously forming a plurality of surfaces of a gear tooth in the workpiece using the pattern of the ECM attachment while applying the first charge to the workpiece and applying the second charge to the ECM attachment and turning the workpiece and the ECM attachment in opposite rotational directions. The plurality of surfaces includes at least one end face and a top land of the gear tooth. 1. A method of manufacturing a gear , the method comprising:applying a first charge to a workpiece and applying a second, opposite charge to an electrochemical machining (ECM) attachment, the ECM attachment having a pattern; andsimultaneously forming a plurality of surfaces of a gear tooth in the workpiece using the pattern of the ECM attachment while applying the first charge to the workpiece and applying the second charge to the ECM attachment and turning the workpiece and the ECM attachment in opposite rotational directions, the plurality of surfaces including at least one end face and a top land of the gear tooth.2. The method of claim 1 , wherein the gear tooth is one of a plurality of gear teeth and the method further comprises forming a plurality of surfaces of the plurality of gear teeth by applying the first charge to the workpiece and applying the second charge to the ECM attachment and turning the workpiece and the ECM attachment in opposite rotational directions.3. The method of claim 1 , wherein applying the first charge to the workpiece and applying the second charge to the ECM attachment results in removal of material from the workpiece.4. The method of claim 3 , wherein applying the second charge to the ECM attachment charges the ECM attachment as a cathode.5. The method of claim 4 , wherein turning the workpiece and ...

Подробнее
Номер записи: 83
20-08-2015 дата публикации

ELECTROCHEMICAL MACHINING TOOL AND ELECTROCHEMICAL MACHINING SYSTEM

Номер: US20150231717A1
Автор: ASANO Shin, Kobayashi Tetsuhei, Mukai Yosuke, Tamura Kazuhisa
Принадлежит: MITSUBISHI HEAVY INDUSTRIES, LTD.

An electrochemical machining tool includes a tool main body which includes an electrode having a tubular shape extending along an axis and formed of a conductive material having flexibility, the electrode through which an electrolyte flows toward a distal end side, and an insulating layer coated on an outer circumferential surface of the electrode so as to expose a distal end surface of the electrode. In the electrochemical machining tool, a hole part serving as a fluid discharge part configured to discharge the electrolyte flowing through inside of the electrode toward the outside in the radial direction of the tool main body is formed at a portion of a position in the circumferential direction of the tool main body. 1. An electrochemical machining tool comprising a tool main body which comprises an electrode having a tubular shape extending along an axis and formed of a conductive material having flexibility , the electrode through which an electrolyte flows toward a distal end side , and an insulating layer coated on an outer circumferential surface of the electrode so as to expose a distal end surface of the electrode ,wherein a fluid discharge part configured to discharge the electrolyte flowing through inside of the electrode toward the outside in the radial direction of the tool main body is formed at a portion of a position in the circumferential direction of the tool main body.2. The electrochemical machining tool according to claim 1 , wherein the fluid discharge part is a hole part passing through the electrode and the insulating layer in the radial direction.3. The electrochemical machining tool according to claim 1 , wherein the fluid discharge part is a cutout part cut out from a distal end of the tool main body toward a rear end.4. The electrochemical machining tool according to claim 1 , wherein a non-insulating part configured to expose an outer circumferential surface of the electrode to the outside in the radial direction is formed at a portion of ...

Подробнее
Номер записи: 84
18-08-2016 дата публикации

METHOD OF PROCESSING UNFINISHED SURFACES

Номер: US20160237826A1
Автор: Rizzo John P.
Принадлежит:

A method of fabricating a finished part may comprise creating an unfinished part using a primary metal fabrication process, wherein the primary metal fabrication process leaves a surface deformation on the unfinished part, and removing the surface deformation from the unfinished part using a secondary metal fabrication process, wherein the secondary metal fabrication process further creates the finished part from the unfinished part. The disclosed method may save manufacturing steps and increase production accuracy. 1. A method of fabricating a finished part , comprising:creating an unfinished part using a primary metal fabrication process, the primary metal fabrication process generating a surface deformation on the unfinished part; andremoving the surface deformation from the unfinished part using a secondary metal fabrication process, wherein the secondary metal fabrication process further creates the finished part from the unfinished part.2. The method of claim 1 , wherein the primary metal fabrication process is casting.3. The method of claim 2 , wherein the primary metal fabrication process is investment casting.4. The method of claim 2 , wherein the secondary metal fabrication process exposes one or more cores used in the primary metal fabrication process.5. The method of claim 1 , wherein the primary metal fabrication process is selected from the group consisting of welding claim 1 , joining and additive manufacturing.6. The method of claim 1 , wherein the finished part is an airfoil.7. The method of claim 1 , wherein the secondary metal fabrication process is selected from the group consisting of electrochemical machining and photochemical machining.8. A method of fabricating a finished airfoil claim 1 , comprising:creating an unfinished airfoil using a primary metal fabrication process, wherein the primary metal fabrication process leaves a surface deformation on the unfinished airfoil; andremoving the surface deformation from the unfinished airfoil using ...

Подробнее
Номер записи: 85
25-07-2019 дата публикации

Drilling tool for use in machining a conductive work piece

Номер: US20190224769A1
Автор: Andrew Lee Trimmer, Stephen Francis Rutkowski
Принадлежит: General Electric Co

A drilling tool for use in machining a conductive work piece that includes a forward electrode tip including an outer radial portion and an inner radial portion. The outer radial portion includes a forward face, and the inner radial portion extends from the forward face of the outer radial portion. The drilling tool further includes a dielectric sheath that extends circumferentially about the outer radial portion, at least one side electrode coupled to the dielectric sheath, and a protective sheath that extends circumferentially about the dielectric sheath. An opening is defined in the protective sheath such that the at least one side electrode is at least partially exposed.

Подробнее
Номер записи: 86
10-09-2015 дата публикации

ELECTROCHEMICAL MACHINING APPARATUS

Номер: US20150251262A1
Автор: ASANO Shin, Kobayashi Tetsuhei, Mukai Yosuke, SHINTANI Tomofumi, Tamura Kazuhisa
Принадлежит: MITSUBISHI HEAVY INDUSTRIES, LTD.

Provided is an electrochemical machining apparatus, which includes an electrode () that form of a shape which a tube shape is extended, including a flexible conductive material, and is which an electrolyte (W) circulates from a base end side () thereof toward a distal end side () thereof, a current supply unit () that causes electric current to flow with respect to the electrode () in an extending direction (direction running the Y direction) in which the electrode () extends, and a magnetic field generation unit () that includes at least one pair of magnets () which are disposed to face the electrodes () a direction and apply a magnetic field in a direction (X direction) intersecting the extending direction with respect to the electrodes (). 1. An electrochemical machining apparatus comprising:an electrode configured to form of a shape which a tube shape is extended, configured of a flexible conductive material, and in which an electrolyte circulates from a base end side thereof toward a distal end side thereof;a current supply unit configured to cause electric current to flow with respect to the electrode in an extending direction in which the electrode extends; anda magnetic field generation unit configured to apply a magnetic field with respect to the electrode in a direction intersecting the extending direction.2. The electrochemical machining apparatus according to claim 1 , wherein the magnetic field generation unit comprises at least one pair of magnets disposed to face each other.3. The electrochemical machining apparatus according to claim 2 , further comprising a first movement mechanism configured to move the magnetic field generation unit in a direction intersecting facing directions of the pair of magnets.4. The electrochemical machining apparatus according to claim 2 , further comprising a rotating mechanism configured to move the magnetic field generation unit to be rotated about an axis extending in a direction intersecting facing directions of the ...

Подробнее
Номер записи: 87
01-08-2019 дата публикации

FUEL-INJECTION METERING DEVICE, FUEL-INJECTION NOZZLE, MOULD FOR PRODUCING A FUEL-INJECTION METERING DEVICE AND METHOD FOR PRODUCING A FUEL-INJECTION METERING DEVICE

Номер: US20190234364A1
Автор: GÜNTHER Markus, Günther Oliver, HÖG Thomas, KONIETZNI Hans-Joachim, LEICHTLE Matthias, PFENDTNER Klaus, WAGNER Ulrich
Принадлежит:

The present application concerns a fuel-injection metering device for a motor vehicle. The fuel-injection device include a main body with at least one through-hole, whereby the main body forms a valve seat on its inner face that is provided to interact with a valve body, whereby the inner face of the main body is electrochemically machined. The application also concerns a mould, a production method, and a fuel-injection nozzle. 15.-.6. Mould for producing a fuel-injection metering device , with an electrically chargeable cathode , whereby the cathode exhibits at one end an electrically insulating layer through which an engagement section of the cathode protrudes , characterized in that the engagement section is surrounded by segment-like insulation sections running in an axial direction , between which active areas of the cathode are uncovered.7. Mould according to claim 6 , characterized in that there is at least one electrolyte fluid guidance groove on the surface of the insulation layer and/or at least one electrolyte fluid guidance channel runs through the material of the insulation layer.89.-. (canceled) The present application is a divisional of U.S. application Ser. No. 15/115,710, filed on Aug. 1, 2016, now allowed, which, in turn, is a 371 of PCT/EP2015/052157, filed on Feb. 3, 2015, both of which are incorporated by reference herein in full.The invention concerns a fuel-injection metering device for a motor vehicle such as a car, lorry or other utility vehicle which among other things comprises a cup-like main body with at least one through-hole, whereby the main body forms a valve seat on its inner face which is provided to interact with a preferably concave, round, spherical or ball-like valve body in order to seal and open the through-hole.In the state of the art, such as of DE 603 13 240 T2, a fuel-injection device is known for feeding pressurized fuel to a fuel injector, whereby the fuel-injection system contains the fuel injector and comprises the ...

Подробнее
Номер записи: 88
30-08-2018 дата публикации

COVERED EMBOLIC COILS

Номер: US20180242981A1
Автор: GARZA Armando
Принадлежит:

An embolic implant for treating aneurysms or other vascular disorders may include a cover component of unitary construction that is disposed about the exterior of a microcoil such that it does not extend into a lumen formed by the coil. The cover can enhance packing volume and density per unit length of coil, and can prevent blood flow and cause blood clotting while not risking rupture of the vascular disorder. The cover may also provide a platform for the application of multiple treatments and/or therapies including, for example, functionalized and/or bioactive coatings, drug coatings, gene therapy, thrombogenicity control coatings, and surface modifications, while preserving key coil performance attributes. 130.-. (canceled)31. A method of manufacturing an implant for use in treating a vascular disorder , the method comprising the steps of:obtaining an embolic coil forming a lumen;forming a cover of unitary construction by creating a pattern in a sheet of unitary construction using a subtractive manufacturing technique; andhelically winding the cover about an exterior of the embolic coil, such that the cover does not extend into the lumen formed by the embolic coil.32. The method of claim 31 , wherein the sheet comprises a metallic foil.33. The method of claim 32 , wherein the metallic foil comprises a material selected from the group consisting of nitinol claim 32 , tantalum claim 32 , tungsten claim 32 , platinum claim 32 , platinum iridium claim 32 , cobalt chrome claim 32 , magnesium claim 32 , iron claim 32 , stainless steel claim 32 , and combinations and alloys thereof.34. The method of claim 31 , wherein the sheet comprises a thickness in a range from about 5 microns to about 250 microns.35. The method of claim 31 , wherein the subtractive manufacturing technique is selected from the group consisting of a laser technique claim 31 , a mechanical technique claim 31 , a wet chemical technique claim 31 , an electrochemical masking technique claim 31 , a ...

Подробнее
Номер записи: 89
09-09-2021 дата публикации

HAND-HELD CATHODE STRUCTURE AND ELECTROLYTIC-POLISHING APPARATUS INCLUDING THE SAME

Номер: US20210277536A1
Автор: HWANG Jae Sang, SONG Wan Seob
Принадлежит:

The embodiment relates to a hand-held cathode structure and an electrolytic polishing apparatus including the same. 1. A hand-held cathode structure which is disposed adjacent to an electrolytic polishing target material for electrolytic polishing , the hand-held cathode structure comprising:a cathode plate movable with respect to the electrolytic polishing target material; andan insulating fiber film layer disposed between the electrolytic polishing target material and the cathode plate and capable of absorbing an electrolyte.2. The hand-held cathode structure of claim 1 , wherein the insulating fiber coating layer comprises a first insulating fiber coating layer disposed between the electrolytic polishing target material and the cathode plate claim 1 , a second insulating fiber coating layer surrounding a side surface of the cathode plate claim 1 , and a third insulating fiber coating layer surrounding an upper side of the cathode plate.3. The hand-held cathode structure of claim 1 , wherein the cathode plate includes a vertical perforation penetrating upper and lower sides.4. The hand-held cathode structure of claim 3 , wherein a second diameter of the upper side of the vertical perforation is larger than a first diameter of the lower side of the vertical perforation.5. The hand-held cathode structure of claim 3 , wherein the hand-held cathode structure further comprises a horizontal perforation connected to the vertical perforation and extending in a horizontal direction to pass therethrough.6. The hand-held cathode structure of claim 1 , wherein the insulating fiber coating layer includes a predetermined recess and in which an electrolyte nozzle is fixed to the predetermined recess.7. The hand-held cathode structure of claim 1 , wherein the cathode plate comprises a curved shape.8. An electrolytic polishing apparatus comprising the hand-held cathode structure according to .9. An electrolytic polishing apparatus comprising the hand-held cathode structure ...

Подробнее
Номер записи: 90
08-09-2016 дата публикации

ELECTROCHEMICAL MACHINING METHOD, ELECTROCHEMICAL MACHINING APPARATUS AND ELECTROCHEMICAL MACHINING FLUID

Номер: US20160256945A1
Автор: Goto Akihiro, HAISHI Yuichiro, MOHRI Naotake, SAITO Nagao, Yuzawa Takashi
Принадлежит: Mitsubishi Electric Corporation

While switching polarity of an electrode, a voltage is applied between the electrode and a workpiece hard metal with the electrode used as a negative-electrode such that tungsten carbide (WC; component of the hard metal) is anodized to form a tungsten oxide (WO3), and a voltage is supplied therebetween with the electrode used as a positive-electrode such that cobalt (Co) that is a component of the workpiece is electrolytically-eluted and at the same time the WO3 generated by anodization is dissolved in the machining fluid, a saline solution (NaCl) or an aqueous solution of nitrate of soda (Na(No3)) is used as an machining fluid; a calcium salt is added beforehand to the machining fluid to react tungstate soda (Na2WO4) generated in the machining with the calcium salt whereby calcium tungstate (CaWO4) is produced; and a calcium compound is separated and recovered using a difference in specific gravity. 1. An electrochemical machining method , in which electrochemical machining is performed by applying a voltage to pass a current between an electrode and a hard metal that is a workpiece with the electrode used as a negative electrode such that tungsten carbide (WC) that is a component of the hard metal workpiece is anodized to form a tungsten oxide (WO3) and , at the same time , cobalt (Co) is electrolytically eluted , and by chemically dissolving the tungsten oxide (WO3) generated by the anodization , the method comprising:using a saline solution (aqueous solution of NaCl) or an aqueous solution of nitrate of soda (Na(No3)) as an electrochemical machining fluid;adding in advance a calcium salt to the electrochemical machining fluid to allow tungstate soda (Na2WO4) generated in the electrochemical machining and the calcium salt to undergo a reaction whereby calcium tungstate (CaWO4) is produced; andseparating and recovering a calcium compound by using a difference in specific gravity.2. The electrochemical machining method according to claim 1 , wherein claim 1 , when ...

Подробнее
Номер записи: 91
24-09-2015 дата публикации

ELECTROCHEMICAL ETCHING APPARATUS

Номер: US20150267317A1
Автор: Guo Lian, Han Shu-Jen, Li Xuesong
Принадлежит:

An electroplating etching apparatus includes a power to output current, and a container configured to contain an electrolyte. A cathode is coupled to the container and configured to fluidly communicate with the electrolyte. An anode is electrically connected to the output, and includes a graphene layer. A metal substrate layer is formed on the graphene layer, and is etched from the graphene layer in response to the current flowing through the anode. 1. An electrochemical etching method , comprising:forming an anode having a graphene layer formed on a metal substrate layer;forming an electrically conductive polymer on to the graphene layer such that the metal plate is coupled to the graphene layer;disposing the metal substrate layer in an electrolyte;disposing a cathode being electrically connected to a power source in the electrolyte; andconnecting at least one of the graphene layer and the metal substrate layer to the power source to supply a current through the anode and the electrolyte such that the metal substrate layer is etched from the graphene layer.2. The electrochemical etching method of claim 1 , further comprising forming the electrically conductive polymer from at least one ionomer configured to couple the metal plate to the graphene layer.32. The electrochemical etching method claim 1 , claim 1 , forming the electrically conductive polymer from a polymer mixture of two ionomers.4. The electrochemical etching method of claim 3 , wherein the electrically conductive polymer comprises Poly(3 claim 3 ,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT: PSS).5. The electrochemical etching method of claim 1 , further comprising forming the electrically conductive polymer from an electrically conductive organic polymer.6. The electrochemical etching method of claim 5 , further comprising forming the electrically conductive polymer from an electrically conductive semi-flexible rod polymer.7. The electrochemical etching method of claim 6 , wherein the ...

Подробнее
Номер записи: 92
14-09-2017 дата публикации

Method and Device for Etching Patterns Inside Objects

Номер: US20170259444A1
Автор: Megela Mark, Palanko Edward, Ringer James, Vaccaro Robert, Vidra Michael
Принадлежит: Tech Met, Inc.

Methods and devices for etching patterns on interior surfaces of hollow objects are described. The method may include preparation of the interior surface of the object, such as pre-cleaning, and coating the interior surface of the object. A pattern may then be generated on the interior surface of the object by any of mechanical or manual scribing and peeling, laser ablation, or photoresist coating and laser exposure, development and hardening. The pattern is then etched using chemical etchants, and finished to remove remaining coating, provide surface passivation and/or protectant application. Mechanical and laser devices which may facilitate pattern generation are also described. 1. A mechanical scribing device for scribing a pattern on an inner surface of a hollow object , the device comprising:one or more scribing blades;a cutting head having a distal end, a proximal end, and a longitudinal axis therebetween;a blade holder rotatably attached to the distal end of the cutting head, the blade holder having the one or more scribing blades mounted thereon;means for adjusting a position of the blade holder on the cutting head between an engaged position configured to contact the inner surface of the hollow object, and a retracted position configured to move the scribing blades away from the inner surface of the hollow object; anda railing upon which the cutting head is operably mounted and moveable by a motor,wherein the motor and the means for adjusting the position of the blade holder control a path of the one or more scribing blades on the interior surface of the hollow object to scribe the pattern.2. The device of claim 1 , wherein the path of the one or more scribing blades is controlled by an automated controller.3. The device of claim 1 , further comprising:a ball screw nut, wherein the cutting head is operably attached to the ball screw nut and the rail is a screw threadedly mated with the ball screw nut, andwherein the cutting head does not rotate with ...

Подробнее
Номер записи: 93
14-09-2017 дата публикации

ELECTROCHEMICAL WELL PIPE CUTTING INSTRUMENT

Номер: US20170260826A1
Автор: BALLUS Monica, BITTNER Michel, CRABEIL Jean-Paul, FREMONT Jéremy, WALRAVE Thierry
Принадлежит:

An electrochemical well pipe cutting instrument, applicable in particular for cutting any type of pipes accessing underground works with conductive fluid inside, includes at least one device for ensuring electrical continuity and at least one electrode. The instrument also includes at least one device for ensuring mechanical fixation of the instrument in the pipe such as an anchor. The device for ensuring electrical continuity, the anchor and electrode can be adjusted in length to suit different diameters of pipe within a large range. Optionally the electrodes are located on a rotary device. The instrument is connected to a main instrument body which includes an electronic module, at least one centralizer and a CCL module with an inclinometer. The main instrument body is connected to a cable head which ensures the communication to a surface unit. 1. An electrochemical well pipe cutting instrument , applicable in particular for cutting any type of metal pipes accessing underground works with conductive fluid inside comprisingat least one means for ensuring electrical continuity;at least one electrode; andat least one means for ensuring mechanical fixation of the instrument in the pipe, wherein the means for ensuring electrical continuity is also the means for ensuring mechanical fixation.2. An electrochemical well pipe cutting instrument according to claim 1 , wherein the means for mechanical fixation is an anchor.3. An electrochemical well pipe cutting instrument according to claim 2 , wherein the means for ensuring electrical continuity claim 2 , the anchor and the electrode are adjustable in length to suit different diameters of pipe within a large range.4. An electrochemical well pipe cutting instrument according to claim 1 , wherein the electrode is located on a rotary device.5. An electrochemical well pipe cutting instrument according to claim 1 , wherein the instrument is connected to a main instrument body which comprises an electronic module to deliver an ...

Подробнее
Номер записи: 94
01-10-2015 дата публикации

ELECTROCHEMICAL MACHINING TOOL, ELECTROCHEMICAL MACHINING SYSTEM, AND PERFORATED MEMBER MANUFACTURING METHOD

Номер: US20150273602A1
Автор: ASANO Shin, Kobayashi Tetsuhei, Mukai Yosuke, SHINTANI Tomofumi, Tamura Kazuhisa
Принадлежит: MITSUBISHI HEAVY INDUSTRIES, LTD.

The present invention is an electrochemical machining tool equipped with a tool body that comprises: an electrode that extends along an axial line and inside which a flow channel through which an electrolytic solution flows towards the tip end is formed; an insulating layer covering the outer circumferential surface of the electrode so as to expose the tip end face of the electrode; and a flow channel-partitioning part for partitioning the flow channel into a first flow channel containing the axial line and a second flow channel positioned on the outer circumferential side of the first flow channel. The electrochemical machining tool has a configuration in which a fluid outflow section for directing electrolytic solution, which is flowing through the second flow channel, outward in the radial direction of the tool body is formed on a portion of the circumference of the tool body. 1. An electrochemical machining tool comprising:a tool body that includesan electrode formed of a flexible electroconductive material in a tube shape that extends along an axial line, having an inside formed with a flow channel along which an electrolytic solution flows toward a tip end,an insulating layer for covering an outer circumferential surface of the electrode such that the electrode is exposed at a tip end face, anda flow channel partitioning part for partitioning the flow channel into a first flow channel that includes the axial line and a second flow channel that is positioned on an outer circumferential side of the first flow channel; anda fluid outflow section for directing the electrolytic solution flowing through the second flow channel outward in a radial direction of the tool body, formed on a portion of the circumference of the tool body.2. The electrochemical machining tool according to claim 1 , further comprising:a plug part provided inside the electrode for blocking the second flow channel,whereinthe fluid outflow section is formed further to a rear end side of the ...

Подробнее
Номер записи: 95
22-09-2016 дата публикации

SLIDING SURFACE

Номер: US20160273576A1
Автор: Gross Emanuel, GRUTZMACHER Andreas, Hafner Wolfgang, Reingen Jürgen, Schreiber Leo, Weber Matthias
Принадлежит:

For friction reduction in sliding bearing, it is known to structure the sliding surface () by ECM by introducing a plurality of microscopic small indentations (). According to the invention it is proposed in particular in the same process step to smoothen also the intermediary spaces () between the indentations (), thus to remove the tips of the surface profile. 1127. A rotation symmetrical sliding bearing surface for a sliding movement along an opposite surface , wherein a surface of the sliding surface () is structured by microscopic indentations () , which comprises:{'b': 11', '5', '27, 'a roughness (Rz) is reduced compared to non structured portions in a structured portion () in entire intermediary spaces () between the indentations ().'}251127. The sliding surface according to claim 1 , characterized in that the intermediary spaces () in the structured portion () between the indentations () have a roughness (Ra) of 0.2 μm at the most and/or a roughness (R) of 0.16 μm at the most.352711. The sliding surface according to claim 1 , characterized in that the roughness (Rz) is at least 10% lower in the intermediary spaces () between the indentations () of the structured portion () than in the non-structure portion.42727. The sliding surface according to claim 1 , characterized in that in the portion between the indentations () claim 1 , the surface has a roughness (Rz) which is less than the depth (t) of the indentations () claim 1 , in particular below 5 μm claim 1 , and/or a contact portion of at least 50%.527272127. The sliding surface according to claim 1 , characterized in that the roughness (Rz) in the portion between the indentations () increases with increasing distance from the indentations -() when a distance () between two adjacent indentations () is{'b': 29', '26', '26, 'either twice the size of the lateral extension of the electrical scatter field () of one of the protrusions () beyond an edge of the protrusion (), or'}{'b': 27', '27, 'greater than the ...

Подробнее
Номер записи: 96
21-09-2017 дата публикации

APPARATUS AND METHOD FOR MAKING EXTRUSION DIES

Номер: US20170266743A1
Автор: Forenz Dominick John, Humphrey Mark Lee, Miller Kenneth Richard, Rector John Charles, Shugars Gregg Lee
Принадлежит: CORNING INCORPORATED

An apparatus and method to machine cavities in die blanks having little to no taper. The apparatus includes an elec trode tool () including intersecting walls coated with electrically insulating coating (), an erosion face () comprising a cross section of the walls exposed through the electrically insulating coating, and a channel formed by the walls to supply electrolyte to the erosion face, the channels defined by interior surfaces of the walls and having an opening formed by edges of the erosion face. The method includes pulsed electrochemical machining a work piece with the electrode tool.

Подробнее
Номер записи: 97
29-09-2016 дата публикации

FIXTURE FOR ELECTRO-CHEMICAL MACHINING ELECTRODE

Номер: US20160279721A1
Автор: Capriotti Daryl Paul, Holmes James Bradford, TRIMMER Andrew Lee
Принадлежит:

A fixture for an electro-chemical machining (ECM) electrode is provided. The fixture may include a clamp having a shape and size configured to selectively engage in at least a portion of a selected dovetail slot of a plurality of dovetail slots in a turbine wheel. An electrode mount positions an electrode head relative to the clamp such that the electrode head operatively engages a portion of the selected dovetail slot for electro-chemical machining of the portion. The fixture's electrode may act as a cathode for the ECM process. The fixture allows for ECM on site without removing a turbine wheel from a turbomachine. 1. A fixture for an electro-chemical machining (ECM) electrode , comprising:a clamp having a shape and size configured to selectively engage in at least a portion of a selected dovetail slot of a plurality of dovetail slots in a turbine wheel; andan electrode mount for positioning an electrode head relative to the clamp such that the electrode head operatively engages a portion of the selected dovetail slot for electro-chemical machining of the portion.2. The fixture of claim 1 , wherein the electrode mount includes a first aperture extending through a section of the clamp.3. The fixture of claim 2 , wherein the electrode mount further includes a positioning member coupled to an end of the clamp claim 2 , and a second aperture extending through the positioning member and substantially aligned with the first aperture.4. The fixture of claim 2 , wherein the first aperture extends at an angle relative to a longitudinal axis of the clamp.5. The fixture of claim 1 , further comprising an electrode including an electrode head having an opening at an end thereof claim 1 , the opening in fluid communication with an electrolyte solution passage extending through the electrode.6. The fixture of claim 5 , wherein the electrode is substantially linear and the electrode head is substantially rounded.7. The fixture of claim 5 , wherein the electrode is operatively ...

Подробнее
Номер записи: 98
28-09-2017 дата публикации

ELECTROCHEMICAL MACHINING INNER CONTOURS OF GAS TURBINE ENGINE COMPONENTS

Номер: US20170274451A1
Автор: HATHERLEY PHILIP, JR. Samuel R., Kamenzky Susanne, Merrill Gary B., MILLER, Thomaidis Dimitrios
Принадлежит:

A method of forming a component for a gas turbine engine, including: casting a component around a ceramic core, wherein the ceramic core forms a pilot channel () in the component, the pilot channel oriented from a base () to a tip () of the component; sinking an ECM electrode into the pilot channel; and enlarging the pilot channel to form an inner surface of an external wall () of the component via electro-chemical machining, wherein a contour () of the inner surface is different than a contour of the pilot channel. 1. A method of forming a component for a gas turbine engine , comprising:casting the component around a ceramic core, wherein the ceramic core forms a pilot channel in the component, the pilot channel oriented from a base to a tip of the component;sinking an electro-chemical machining (ECM) electrode into the pilot channel; andenlarging the pilot channel to form an inner surface of an external wall of the component via electro-chemical machining, wherein a contour of the inner surface is different than a contour of the pilot channel.2. The method of claim 1 , wherein a contour of the ECM electrode matches a contour of the external wall.3. The method of claim 1 , wherein a contour of the ECM electrode matches a desired contour of the inner surface.4. The method of claim 1 , wherein the pilot channel is enlarged into a cooling channel claim 1 , the method further comprising forming flow-interrupting elements in the cooling channel via the electro-chemical machining.5. The method of claim 1 , further comprising using at least two different ECM electrodes to enlarge the pilot channel claim 1 , each ECM electrode comprising a different cross sectional shape.6. The method of claim 1 , further comprising using an ECM electrode comprising an asymmetric cross sectional shape that matches a desired contour to be formed in the component when enlarging the pilot channel.7. The method of claim 1 , further comprising using an ECM electrode that is partly-isolated to ...

Подробнее
Номер записи: 99
27-09-2018 дата публикации

MACHINING APPARATUS AND MACHINING SYSTEM

Номер: US20180272449A1
Автор: Filipovic Dragan, Luo Yuanfeng, MOLA Paolo, Wu Yong
Принадлежит:

A machining apparatus is disclosed, which includes a curved outer conduit, a curved rotary electrode and a driving motor. The outer conduit has a cavity and a fluid inlet in fluid communication with the cavity. The electrode includes a flexible shaft positioned in the cavity and having a first end and a second end, and a machining head having a fluid outlet in fluid communication with the cavity and electrically connected with the first end of the flexible shaft to be powered via the flexible shaft. The motor is mechanically coupled to the second end of the flexible shaft for driving the flexible shaft to rotate. A machining system is also disclosed, which includes the machining apparatus, a power supply for powering the flexible shaft, an electrolyte supply for providing electrolyte to the fluid inlet and a machine tool onto which the outer conduit and the motor are positioned. 1. A machining apparatus , comprising:a curved outer conduit having a cavity and a fluid inlet in fluid communication with the cavity;a curved rotary electrode comprising a flexible shaft positioned in the cavity and having a first end and a second end, and a machining head having a fluid outlet in fluid communication with the cavity and electrically isolated from the outer conduit and electrically connected with the first end of the flexible shaft to be powered via the flexible shaft; anda driving motor mechanically coupled to the second end of the flexible shaft for driving the flexible shaft to rotate.2. The machining apparatus of claim 1 , wherein the machining head is located outside the outer conduit and the curved rotary electrode comprises a first shaft coupling for electrically connecting the machining head with the first end of the flexible shaft and comprising a fluid passage in fluid communication with the fluid outlet and the cavity.3. The machining apparatus of claim 2 , wherein the machining head is detachably coupled with the first shaft coupling by a threaded connection.4. ...

Подробнее
Номер записи: 100