Vorrichtung zur Montage und Demontage der Tücher einer Gegenwalze in einer Rotationsstanzmaschine

MACHINE TOOL MONITORING DEVICE

FOOD CUTTER WITH DISCONNECTION PROCEDURE ON BASIS OF A SURFACE PLATE

DEVICE FOR DETERMINING THE FORCES LEG CUTS OF FLAT MATERIAL

BAND SAW MACHINE

Kickback detection method and apparatus

In various embodiments, a cutting tool such as a chainsaw may include a cutting member that is movable by an engine, one or more sensors configured to detect one or more of acceleration in a direction parallel to one or more axes of the cutting tool and rotational velocity about one or more axes of the cutting tool, and a microprocessor configured to cause movement of the cutting member to stop in response to receiving one or more signals from the one or more sensors. In various embodiments, a method may include receiving, by a microprocessor of a chainsaw, a signal from a gyroscope configured to detect rotational velocity about one or more axes of the cutting tool, and actuating, by the microprocessor, a braking system of the chainsaw to stop movement of a cutting chain around a perimeter of a guide bar in response to the signal.

Kickback detection method and apparatus

In various embodiments, a cutting tool such as a chainsaw may include a cutting member that is movable by an engine, one or more sensors configured to detect one or more of acceleration in a direction parallel to one or more axes of the cutting tool and rotational velocity about one or more axes of the cutting tool, and a microprocessor configured to cause movement of the cutting member to stop in response to receiving one or more signals from the one or more sensors. In various embodiments, a method may include receiving, by a microprocessor of a chainsaw, a signal from a gyroscope configured to detect rotational velocity about one or more axes of the cutting tool, and actuating, by the microprocessor, a braking system of the chainsaw to stop movement of a cutting chain around a perimeter of a guide bar in response to the signal.

Two stage punch press actuator with output drive shaft position sensing

BAND SAW MACHINE

... of the disclosure When a workpiece is cut by a running band saw in a horizontal band saw machine and a horizontal cutting width of the workpiece is over or larger than the performace of the machine, the band saw which must be kept in vertical or upright position during cutting operation of the workpiece is apt to incline because the band saw cannot cut into the material of workpiece. A cutting width detection device for automatically detecting the cutting width of workpiece, an allowable deviation or inclination revising circuit for revising the allowable deviation value based on the width value detected by the cutting width detection device, and a control means outputting a termination signal for the machine when the cutting width value is larger than the revised allowable value issued from the revising circuit.

DEVIATION DETECTING APPARATUS FOR A BANDSAW BLADE FOR HORIZONTAL BANDSAW MACHINES

The present invention relates generally to horizontal bandsaw machines having a flexible endless bandsaw blade trained around a plurality of wheels or pulleys to perform cutting operations and, more particularly, pertains to apparatus for detecting deviations of the bandsaw blade from the desired line of cut in horizontal bandsaw machines.

METHOD OF CUTTING SHEET MATERIAL WITH SCHEDULED SUPPLEMENTATION

PERFORATING APPARATUS FOR TRANSVERSE PERFORATIONS IN WEBS OF PAPER-LIKE MATERIAL

A machine is described for perforating webs of material, such as toilet paper. The machine includes a cylinder (17) mounted on the frame of the machine and around which cylinder the web is carried as the web passes through the machine. The cylinder has a plurality of blades, one edge of each extending beyond the surface of the cylinder and parallel to the axis of the cylinder. A support (21) for a cooperating blade (33) is pivotally mounted on the machine in a manner which permits the cooperating blade (33) to move toward and away from the blades in the cylinder (17). The cooperating blade (33) extends at an angle to the axis of the cylinder and consists of a plurality of segments, each of which is supported in a block (25) which fits into seats in the support. The seats extend in a line parallel to the cylinder axis.

Stanzmaschine

PROCEDURE FOR CUTTING FLAT MATERIAL OF MEANS OF A STEERED CUTTING MACHINE WITH A GUMPTION BLADE.

SAFETY DEVICE FUER THE DRIVE OF A SYNCHRONISATION CROSS CUTTER.

METHOD AND APPARATUS FOR MOUNTING DEVICES ON A SUBSTRATE.

SAFETY DEVICE FOR THE DETERMINATION OF THE FALSE STRIPPING AT A PUNCHING MACHINE.

PROCEDURE AND DEVICE FOR STEERING THE FEED PER REVOLUTION OF A BAND SAW.

ABNORMALITY DETECTOR DEVICE ON A TOOL.

PROCEDURE FOR THE MONITORING OF THE ENTERPRISE FROM PRESSES AND ARRANGEMENT TO THE EXECUTION OF THE PROCEDURE.

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

Bandsaw blade deviation detecting apparatus for horizontal bandsaw machines

An apparatus for detecting lateral deviations of a bandsaw blade has a follower which is in contact with and follows lateral movement of the blade. A sensing circuit, which is connected to the follower, generates deviation signals representing movement of the follower. A control circuit which is responsive to the deviation signals stops the bandsaw when the lateral movement of the blade has deviated beyond established limits.

System for automatic management of tool life

A system for the automatic management (detection and control) of tool life in a numerically controlled machine tool having means for automatically measuring the dimension of workpieces and correcting the tool offset of a cutting tool depending on wear on the cutting tool. In the system, the mechanical deformation error component (radial deviation component of a spindle of the machine tool) due to heat is removed from the amount of tool offset value (tool feed position compensation) so as to accumulate solely the net tool wear component, and the cutting tool is exchanged when the accumulated value attains a predetermined setting.

CUTTING MACHINE

Power Tool Safety Mechanisms

A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power tool (10) is provided. The safety mechanism (14) is configured to actuate upon receipt of a signal from the sensing mechanism (12). According to a first aspect, the safety mechanism (14) is arranged to rapidly displace the active portion (26) away from a user extremity. Alternatively, according to a second aspect, the safety mechanism (14) is arranged to rapidly urge an extremity of the user away from the active portion (26) of the power tool (10).

Power tool safety mechanisms

A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power tool (10) is provided. The safety mechanism (14) is configured to actuate upon receipt of a signal from the sensing mechanism (12). According to a first aspect, the safety mechanism (14) is arranged to rapidly displace the active portion (26) away from a user extremity. Alternatively, according to a second aspect, the safety mechanism (14) is arranged to rapidly urge an extremity of the user away from the active portion (26) of the power tool (10).

AUTOMATIC DEFECT DETECTOR FOR MACHINE TOOL

Werkzeugmaschinenüberwachungsvorrichtung

Die Erfindung geht aus von einer Werkzeugmaschinenüberwachungsvorrichtung mit einer Erkennungseinheit (32), die zur Anwesenheitserkennung einer Materialart in einem Werkzeugmaschinenarbeitsbereich (34) mittels der spektralen Auswertung einer Strahlung (S<SUB>R</SUB>) vorgesehen ist. Es wird vorgeschlagen, dass die Erkennungseinheit (32) eine Sensoreinheit (44) mit wenigstens einem Empfindlichkeitsbereich (54.2) zur Strahlunngserfassung in einem Wellenlängenbereich (WL<SUB>2</SUB>) aufweist, der zumindest teilweise im Infrarotspektrum angeordnet ist. The invention is based on a machine tool monitoring device with a recognition unit (32), which is provided for detecting the presence of a type of material in a machine tool working area (34) by means of the spectral evaluation of a radiation (S <SUB> R </ SUB>). It is proposed that the detection unit (32) has a sensor unit (44) with at least one sensitivity range (54.2) for detecting radiation in a wavelength range (WL <SUB> 2 </ SUB>) which is arranged at least partially in the infrared spectrum.

BANDSAW MACHINE

METHOD AND APPARATUS FOR MOUNTING INTEGRATED CIRCUIT SEMICONDUCTOR DEVICES ON A SUBSTRATE

DEVICE FOR THE CONTINUOUS SEPARATION OF MOVING WEB OF MATERIAL

A METHOD OF AND AN APPARATUS FOR CONTROLLING A MACHINE TOOL

DEVICE FOR THE TRANSVERSE PERFORATING OF PAPER-SIMILAR COURSE MATERIALS.

DEVICE FOR INDICATING RUNNING THE SEEING VOLUME OF A HORIZONTAL BAND SAW

VORRICHTUNG ZUM ERMITTELN DES SCHNEIDWIDERSTANDES BEI BANDSAEGEMASCHINEN

MACHINE TOOL

DEVICE FOR INDICATING RUNNING THE ATTES HORIZONTALBANDSAE

DEVICE FOR DETERMINING THE GUMPTION RESISTANCE WITH BAND SAWS

Power tool safety mechanisms

BANDSAW BLADE DEVIATION DETECTING APPARATUS

BAND SAW

METHOD OF BREAKING THE FEED IN A TRANSPORTABLE CHOPPING APPARATUS

Abstract When making wood chips by means of a transportable chopping apparatus, the power of a machine may be in-sufficient for continuous chopping of a wood load positioned on a feeding means. Thus, the chopping operation must be intermittently stopped by manual control or automatically in order to reset the sufficient number of revolutions. Otherwise the number of revolutions will fall below a critical value, a chopper may be clogged and a machine indeed stopped. The knives of a chopper usually have a powerful self-feed, in other words, while chiiping the wood said knives also pull a log in the feeding direction. Thus, mere stopping of the feeding means is not always enough to stop the chopping but, under the pulling action of said knives, a piece of wood moves even through a stopped feeding means. An object of the present invention is a feed breaking method in a transportable chopping apparatus, the main principle of said method being to automatically effect a short, impulse-like reverse run cycle for a feeding means in conjunction with stopping of the feed. During this cycle a piece of wood releases itself off the grip of the chopper knives, whereby the chopping is interrupted.

DEVIATION DETECTING APPARATUS FOR A BANDSAW BLADE FOR HORIZONTAL BANDSAW MACHINES

APPARATUS FOR DETECTING LATERAL DEVIATION OF A BAND SAW

An apparatus (50) for detecting lateral deviation of a band saw blade (36) from the desired line of cut which includes an angularly displaceable element (54) slidably engaging the saw blade (36) for pivotal movement therewith. A relatively rigid mounting assembly (52,64) mounts the angularly displaceable element (54) for rotation while resisting lateral displacement. Lateral blade deviation is proportionately determined when angular displacement is sensed by a sensor (55) as the blade (36) contacts the displaceable element (54) rotating it about an axis (53) through the desired plane of the blade (36). The angular deflection sensing assembly 50 also may be incorporated into a guide arm (32).

KNIFE PROJECTION SENSING SYSTEM

A knife projection sensing system for cutting machines having a rotatable surface adapted to retain a plurality of cutting knives. The system employs a plurality of sensors mountable to the cutting machine to be stationary with respect to the rotatable surface. The sensors generate a signal capable of indicating the position of each cutting knife as the knives rotate past the sensors. A microprocessor in communication with the sensors analyzes the signal generated to determine the projection of each knife from a reference surface and to determine if the projection of at least one of the plurality of cutting knives deviates outside preset desirable limits. The projection status of the knives is communicated to an operator by a light display or paper printout. The system can be used to ensure that knives are correctly installed in the cutting machine and to monitor knife position during normal operation. The system can also be used to determine when knives need changing for sharpening. If ...

METHOD AND DEVICE FOR SENSING WHEN A RECIPROCATING CUTTING BLADE BREAKS

Measuring device being used to measure a width of blade of cut and process of measurement of cettedernière

Dans un état où une lame de coupe (6) est levée, un moteur pas à pas linéaire (63) est activé. Une tige de travail (61) est avancée et une extrémité d'une tige de mesure (62) est mise en butée contre un bord (66) de la lame de coupe (6). Ensuite, la tige de travail (61) est renvoyée, la largeur de lame est déduite en calculant le nombre d'impulsions d'entraînement entrées lors du retour par rapport à cet avancement. La lame de coupe (6) est polie à chaque cycle de polissage prédéterminé par des rouleaux de polissage (53a, 54a). La largeur de la lame de coupe (6) est mesurée par un moyen de mesure de largeur de lame (60) à chaque période de polissage prédéterminée. La valeur de mesure de la largeur de lame est renvoyée à un dispositif de commande (2) afin d'exécuter une commande rendant appropriée la période de polissage de la lame de coupe (6) à l'aide des rouleaux de polissage (53a, 54a). Lorsqu'une longue durée de polissage est souhaitée, la fin de la durée de vie des rouleaux de polissage (53a, 54a) est appréciée. In a state where a cutting blade (6) is raised, a linear stepping motor (63) is activated. A working rod (61) is advanced and one end of a measuring rod (62) is abutted against an edge (66) of the cutting blade (6). Then, the working rod (61) is returned, the blade width is deduced by calculating the number of drive pulses input when returning from this advance. The cutting blade (6) is polished at each predetermined polishing cycle by polishing rollers (53a, 54a). The width of the cutting blade (6) is measured by a blade width measuring means (60) at each predetermined polishing period. The measurement value of the blade width is fed back to a control device (2) in order to execute a control making suitable the polishing period of the cutting blade (6) by means of the polishing rollers (53a, 54a). When a long polishing time is desired, the end of the life of the polishing rollers (53a, 54a) is appreciated.

Band saw

SAFETY DEVICE FOR the EMERGENCY STOP Of a SHARP RIBBON Of an APPARATUS OF CUT

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

Cutting apparatus

To provide a cutting apparatus capable of executing cutting or half cutting of a work-piece depending upon quality of the work-piece by producing parallelism between a knife edge of a cutting blade and a mounting face of the work-piece. A support having the blade is provided to a column capable of controlling a tilting angle of the blade in a blade length direction, cutting or half cutting is executed by controlling vertical movement of the blade to the support by a driving source capable of controlling to move linearly provided to the support and by producing a relationship of parallelism to a surface of a table and a knife edge. Respective supports are unitized by being provided with respectively different types driving sources and the blade vertically moved by the driving source and mounted interchangeable and selectively on a column of a cutting apparatus.

Brake cartridges for power equipment

Safety systems for power equipment and components and brake cartridges for use in those safety systems are disclosed. The safety systems, components and brake cartridges are specifically applicable for woodworking equipment such as saws. An exemplary brake cartridge includes a housing and a braking component configured to engage a moving part of the power tool upon occurrence of a predetermined event. The brake cartridge may further include a switch configured so that proper installation of the cartridge in the power tool triggers the switch.

Tool abnormality detector

A tool abnormality detector for use with a machine tool for detecting any abnormality of a tool mounted on the tool mounting shaft. When the tool mounting shaft is in a correct position with respect to the tubular body secured to the spindle, the air pressure is kept constant. When an abnormal resistance is applied to the tool mounting shaft, the latter will lag in rotation with respect to the tubular body, so that the exhaust air passage will be blocked. A pressure sensor detects an abnormal increase in the air supply line, giving a signal for stopping the spindle of the machine tool. This prevents the tool from damage.

Miter saw with improved safety system

A woodworking machine is disclosed having a base, a blade, a detection system adapted to detect a dangerous condition between a person and the blade, and a reaction system associated with the detection system to cause a predetermined action to take place upon detection of the dangerous condition. The blade is rotatable, and moves into a cutting zone to cut a workpiece. The predetermined action may be to stop the blade from rotating and/or to stop movement of the blade toward the cutting zone.

Perforating apparatus for transverse perforations in webs of paper-like material

A machine is described for perforating webs of material, such as toilet paper. The machine includes a cylinder (17) mounted on the frame of the machine and around which cylinder the web is carried as the web passes through the machine. The cylinder has a plurality of blades, one edge of each extending beyond the surface of the cylinder and parallel to the axis of the cylinder. A support (21) for a cooperating blade (33) is pivotally mounted on the machine in a manner which permits the cooperating blade (33) to move toward and away from the blades in the cylinder (17). The cooperating blade (33) extends at an angle to the axis of the cylinder and consists of a plurality of segments, each of which is supported in a block (25) which fits into seats in the support. The seats extend in a line parallel to the cylinder axis.

Work apparatus with safety equipment

An engine-driven brush cutter (100) equipped with a safety device (42) that includes an acceleration sensor unit (24) attached to a drive unit (4) in an aslant orientation such that a detection axis (DA) of the sensor unit (24) inclines by an angle (θ1) relative to the up-and-down direction (V) of the brush cutter (100). This inclined orientation of the detection axis (DA) contributes to lowering the sensitivity of the sensor unit (24) to engine vibration to which the safety device should not be sensitive so much.

ТЕХНОЛОГИЧЕСКАЯ МАШИНА

Изобретение относится к технологической машине. Технологическая машина, прежде всего пильный станок, имеет рабочую поверхность для расположения обрабатываемой заготовки и узел крепления рабочего инструмента. Упомянутый узел крепления рабочего инструмента установлен подвижно относительно рабочей поверхности. Также технологическая машина имеет блок распознавания. Указанный блок распознавания предусмотрен для распознавания присутствия в зоне рабочего инструмента материала определенного вида, осуществляемого посредством спектрального анализа излучения. В результате обеспечивается надежное и быстрое распознавание рабочей ситуации. 12 з.п. ф-лы, 12 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 484 929 (13) C2 (51) МПК B23D 45/04 (2006.01) B23Q 17/20 (2006.01) G01N 21/31 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010115258/02, 22.07.2008 (24) Дата начала отсчета срока действия патента: 22.07.2008 (73) Патентообладатель(и): РОБЕРТ БОШ ГМБХ (DE) (43) Дата публикации заявки: 27.10.2011 Бюл. № 30 2 4 8 4 9 2 9 (45) Опубликовано: 20.06.2013 Бюл. № 17 (56) Список документов, цитированных в отчете о поиске: WO 0016036 А, 23.03.2000. SU 1607204 A1, 23.03.1993. RU 2131335 C1, 10.06.1999. US 2004226424 A1, 18.11.2004. 2 4 8 4 9 2 9 R U (86) Заявка PCT: EP 2008/059556 (22.07.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 20.04.2010 (87) Публикация заявки РСТ: WO 2009/040153 (02.04.2009) Адрес для переписки: 105082, Москва, Спартаковский пер., 2, стр. 1, секция 1, этаж 3, "ЕВРОМАРКПАТ" (54) ТЕХНОЛОГИЧЕСКАЯ МАШИНА (57) Реферат: Изобретение относится к технологической машине. Технологическая машина, прежде всего пильный станок, имеет рабочую поверхность для расположения обрабатываемой заготовки и узел крепления рабочего инструмента. Упомянутый узел крепления рабочего инструмента установлен подвижно относительно рабочей поверхности. Также технологическая машина имеет блок распознавания. ...

ТЕХНОЛОГИЧЕСКАЯ МАШИНА

1. Технологическая машина, прежде всего пильный станок, имеющая рабочую поверхность (14) для расположения обрабатываемой заготовки (16) и узел (20) крепления рабочего инструмента (18), установленный подвижно относительно рабочей поверхности (14), отличающаяся наличием блока (82) распознавания, предусмотренного для распознавания присутствия в зоне (68) рабочего инструмента материала определенного вида, осуществляемого посредством спектрального анализа излучения (SR). ! 2. Технологическая машина по п.1, отличающаяся тем, что блок (82) распознавания включает в себя по меньшей мере один чувствительный элемент (92), и предусмотрено средство (64) сообщения движения, которое при перемещении узла (20) крепления рабочего инструмента относительно рабочей поверхности (14) обеспечивает совместное с ним перемещение чувствительного элемента (92). ! 3. Технологическая машина по п.1, отличающаяся тем, что узел (20) крепления рабочего инструмента предусмотрен для установки рабочего инструмента (18) с возможностью вращения в плоскости (25) вращения, а блок (82) распознавания включает в себя чувствительный элемент (92), расположенный сбоку от плоскости (25) вращения. ! 4. Технологическая машина по п.1, отличающаяся наличием предохранительного средства (76, 78), предусмотренного для того, чтобы на основании сигнала блока (82) распознавания блокировать перемещение узла (20) крепления рабочего инструмента относительно рабочей поверхности (14). ! 5. Технологическая машина по п.1, отличающаяся тем, что блок (82) распознавания предусмотрен для распознавания присутствия материала определенного вида посредством анализа спектра отражения излучения (SR), отраженного от исслед� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2010 115 258 (13) A (51) МПК B23D 45/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2010115258/02, 22.07.2008 (71) Заявитель(и): РОБЕРТ БОШ ГМБХ (DE) Приоритет(ы): (30) Конвенционный приоритет: 20. ...

SCHALTER ZUM POSITIONIEREN DER SCHNEIDEINHEITEN IN EINE SCHNEIDVORRICHTUNG FUER KUNSTSTOFF UND/ODER PAPIER.

Device and method for measuring the width of cutting blades

In a cutting machine, a linear stepping motor (63) is operated when the cutting blade (6) is raised. A working pin (61) is brought forward, resulting in an end of a catching pin (62) striking an edge (66) of the cutting blade. The working pin is thereafter retracted. The blade width is determined by determining the distance of retraction from the front position. The cutting blade is ground by grinding rollers (53a, 54a; 53b, 54b) in each prescribed grinding cycle. The width of the cutting blade is measured by a device (60) for measuring blade width after a prescribed number of grinding operations in each case. The measured value of the blade width is fed back to a control device (2), in order to control the duration of grinding of the cutting blade by means of the grinding rollers in such a way that the amount of grinding approaches a suitable amount of grinding. When a long duration of grinding is required, it is established that the end of the service life of the grinding rollers has ...

VORRICHTUNG ZUM STEUERN DER ANTRIEBE EINER BANDSAEGEMASCHINE

CUTTING APPARATUS

"Detecting deviation of a bandsaw blade"

An apparatus for detecting lateral deviations of a bandsaw blade has a follower which is in contact with and follows lateral movement of the blade. A sensing circuit, which is connected to the follower, generates deviation signals representing movement of the follower. A control circuit which is responsive to the deviation signals stops the bandsaw when the lateral movement of the blade has deviated beyond established limits.

A METHOD OF AND AN APPARATUS FOR DETECTING THE CUTTING RESISTANCE ACTING ON A BANDSAW BLADE

MECHANISM FOR THE DETERMINATION OF RUNNING THE SAEGEBANDES OF A BAND SAW

BREAK DETECTOR FROM AKUSTISEHER EXPENDITURE AND PROCEDURE

DEVICE FOR THE ASSEMBLY AND DISASSEMBLY OF THE CLOTHS OF A GEGENWALZE IN A ROTATION PUNCHING MACHINE

Device as the determination and a check of the saw blade tension of hacksawing machines

MECHANISM FOR THE DETERMINATION OF RUNNING THE SOW VOLUME OF A BAND SAW

VORRICHTUNG ZUM BESTIMMEN DER KRAEFTE BEIN SCHNEIDEN VON FLACHMATERIAL

EINRICHTUNG ZUM FESTSTELLEN DES VERLAUFENS DES SAEGEBANDES EINER BANDSAEGEMASCHINE

Table saw with cutting tool retraction system

SAFETY FOR PRESSES

AUTOMATIC FAULT DETECTION SYSTEM FOR A MACHINE TOOL

METHOD AND APPARATUS FOR SAFETY FOR PRESSES AND THE LIKE

BACKGROUND OF THE INVENTION The present invention relates generally to presses and the like having a ram and upper and lower tools for processing workpieces such as sheet metals and more particularly to a method and apparatus for safety which are applicable to presses in case that the upper tool is mounted free from the ram.

BANDSAW BLADE DEVIATION DETECTING APPARATUS FOR HORIZONTAL BANDSAW MACHINES

Horizontal bandsaw machine with a detecting means for detecting deviations of the bandsaw blade and an actuating means which can stop the bandsaw when it has deviated an amount which is selectively predetermined.

bench saw minute material knife

Measuring apparatus for measuring a width of cutting blade and measuring method thereof.

ANOMALY DETECTOR OF A TOOL

APPARATUS MAKING IT POSSIBLE TO DETECT the DEVIATIONS OF the BLADE Of a BAND SAW

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of a CONTRE-CYLINDRE OF ROTARY CUTTING

Le dispositif pour le montage et le démontage des bandes de revêtement d'un contre-cylindre de découpe rotative comporte des moyens pour serrer et desserrer les extrémités d'au moins une bande de revêtement de façon à autoriser sa permutation dans la largeur du contre-cylindre de découpe rotative. Les moyens pour serrer et desserrer les extrémités d'une bande de revêtement sont constitués par un organe de blocage et de déblocage logé dans une rainure (5) agencée à la périphérie du corps de cylindre (2) du contre-cylindre de découpe rotative, ladite rainure (5) s'étendant sur toute la largeur du corps de cylindre (2). L'organe de blocage et de déblocage comprend un coulisseau déplaçable (9) se déplaçant dans la rainure (5), ledit coulisseau déplaçable (9) comportant des rainures de guidage (10) et des rainures (11, 11a) en forme de cames linéaires dans lesquelles s'engagent des galets solidaires d'au moins une mâchoire déplaçable de façon à agir sur au moins une des extrémités des bandes ...

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

DEVICE FOR the ASSEMBLY AND the DISASSEMBLING OF the COATINGS Of UNCONTRE-CYLINDRE OF ROTARY CUTTING

ANORDNING FOR AVKENNING AV AVVIKELSER HOS BANDSAGBLADET I EN HORISONTELL BANDSAGMASKIN

SETT OCH APPARAT FOR FORBETTRING AV SEKERHETEN HOS PRESSAR

Detection systems for power equipment

Methods to detect when a human body contacts a predetermined portion of a machine are disclosed. The methods distinguish contact with a person from contact with other materials. The methods are particularly applicable in woodworking equipment such as power saws to detect contact between a person and the blade of the saw. Woodworking machines and memory devices for use in woodworking machines having safety systems designed to detect a dangerous condition between a human and a dangerous portion of the woodworking machine and to trigger some action to mitigate the dangerous condition are also disclosed.

Food product slicer with gauge plate based shutdown operation

A food product slicer includes a carriage assembly is mounted to the base for reciprocal movement back and forth past a cutting edge of a knife. An adjustable gauge plate provides variable slice thickness for food product carried by the carriage assembly. During automatic slicing, when the gauge plate is moved from the open position to the closed position, a slicer controller automatically shuts down the carriage drive in a controlled manner that causes the carriage to stop at its most forward position.

SAFETY SYSTEMS FOR POWER EQUIPMENT

Machines with safety systems are disclosed. The machine may take the form of woodworking machines including table saws, band saws, miter saws, hand-held circular saws, pneumatic chop saws, radial-arm saws, jointers, planars, routers and shapers. The machines may include an operative structure configured to perform a task, where the operative structure includes a cutting tool adapted to move in at least one motion, and a safety system adapted to detect the occurrence of an unsafe condition between a person and the cutting tool and for mitigating the unsafe condition. The safety system may include a detection subsystem and a reaction subsystem. The machine may also include a bypass or override mode where in an injury mitigation system is disabled for certain cuts. 1. A machine comprising:a blade; andan injury mitigation system with a normal mode wherein the injury mitigation system is configured to take an action to mitigate injury in the event of contact between the user and the blade, and a bypass mode wherein the injury mitigation system is disabled and takes no action to mitigate injury in the event of contact between the user and the blade.2. The machine of claim 1 , where the action is to stop or retract the blade. This application is a continuation of U.S. patent application Ser. No. 15/670,374, filed Aug. 7, 2017, which is a continuation of U.S. patent application Ser. No. 10/100,211, filed Mar. 13, 2002, issuing as U.S. Pat. No. 9,724,840 on Aug. 8, 2017, which claims the benefit of and priority from U.S. Provisional Patent Application Ser. No. 60/275,583, filed Mar. 13, 2001, all of which are hereby incorporated by reference.This application hereby incorporates by reference the following U.S. patent application: Ser. No. 09/676,190, filed Sep. 29, 2000. This application also hereby incorporates by reference the following PCT patent application: PCT/US00/26812, filed Sep. 29, 2000. This application further incorporates by reference the following U.S. ...

Power equipment with detection and reaction systems

Woodworking machines and safety methods for use with those machines are disclosed. The machines include a detection system adapted to detect one or more dangerous conditions and a reaction system associated with the detection system. The reaction system can include an explosive to trigger the system, and also can be configured to retract a cutting tool at least partially away from a cutting region upon detection of a dangerous condition by the detection system.

BAND SAW WITH IMPROVED SAFETY SYSTEM

A band saw including a frame, at least two, spaced apart, rotatable wheels supported by the frame, a blade looped around the wheels, where rotation of at least one wheel causes the blade to move around the wheels, a detection system adapted to detect a dangerous condition between a person and the blade, and a reaction system configured to engage and stop the blade within 10 milliseconds after detection of the dangerous condition is disclosed. The reaction system may be configured to cut and grip the blade. 1. A band saw comprising:a motor;at least two spaced-apart wheels, where at least one wheel is driven by the motor;a band blade extending around the wheels, where the band blade is electrically isolated;signal generation circuitry adapted to generate an electrical signal;a capacitive coupling adapted to capacitively couple the signal generation circuitry to the band blade to transfer at least a portion of the electrical signal to the band blade; anddetection circuitry that monitors the electrical signal on the band blade for changes indicative of a dangerous condition between a person and the band blade, where the detection circuitry triggers some action to mitigate the dangerous condition when the changes indicative of the dangerous condition are detected.2. The band saw of further comprising a second capacitive coupling adapted to capacitively couple the detection circuitry to the band blade claim 1 , and where the detection circuitry monitors the electrical signal on the band blade through the second capacitive coupling.3. The band saw of where at least one wheel is mounted for rotation on a shaft claim 1 , where the capacitive coupling includes two spaced-apart conductors claim 1 , and where at least a portion of the shaft is one of the two conductors and a charge plate adjacent the shaft is the other of the two conductors.4. The band saw of further comprising a second capacitive coupling adapted to capacitively couple the detection circuitry to the band blade ...

Table saw with table sensor for sensing characteristic of workpiece

Various safety systems for power tools, and in particular table saws include detection systems for detecting a dangerous condition relative to a blade of the power tool, reaction systems for taking mitigation action in response to detection of a dangerous condition. The safety system may detect, prevent, and/or mitigate a dangerous condition associated with the power tool.

Protective apparatus for a machine tool

A protective apparatus and a machine tool are provided. The machine tool includes an operational element, a driving element, and the protective apparatus. The operational element and the driving element are disposed on machine table. The protective apparatus includes an insulating unit, conducting unit, capacitance sensor, and control unit. The insulating unit is disposed between the operational element and the driving element. The driving element drives the operational element by the insulating unit. The conducting unit contacts the operational element. The capacitance sensor electrically connects the conducting unit for sensing capacitance of the conducting unit. The control unit electrically connects the capacitance sensor and the driving element and determines whether a user approaches the operational element based on the capacitance. When the control unit detects that the distance between the user and the operational element is too close, the control unit stops the operation of the operational element.

Table saws

Table saws are disclosed. The table saws can include a blade, an arbor, an arbor block, an elevation carriage, and a latch that connects the arbor block and the elevation carriage. The arbor block can have a first position in which the latch connects the arbor block and the elevation carriage, and a second position in which the latch does not connect the arbor block and the elevation carriage. The arbor block can pivot from the first position to the second position upon the occurrence of a retraction force. The table saw can include an actuator to cause the occurrence of the retraction force, and detection electronics to detect contact between the blade and a person. Woodworking machines with detection and reaction systems are also disclosed. A reaction system can include an explosive that causes retraction of a cutting tool.

SAFETY SYSTEMS FOR POWER EQUIPMENT

Machines with safety systems are disclosed. The machine may take the form of woodworking machines including table saws, band saws, miter saws, hand-held circular saws, pneumatic chop saws, radial-arm saws, jointers, planars, routers and shapers. The machines may include an operative structure configured to perform a task, where the operative structure includes a cutting tool adapted to move in at least one motion, and a safety system adapted to detect the occurrence of an unsafe condition between a person and the cutting tool and for mitigating the unsafe condition. The safety system may include a detection subsystem and a reaction subsystem. The machine may also include a bypass or override mode where in an injury mitigation system is disabled for certain cuts. 1. A machine comprising:a blade; andan injury mitigation system with a normal mode wherein the injury mitigation system is configured to take an action to mitigate injury in the event of contact between the user and the blade, and a bypass mode wherein the injury mitigation system is disabled and takes no action to mitigate injury in the event of contact between the user and the blade.2. The machine of claim 1 , where the action is to stop or retract the blade.3. A machine comprising:an operative structure adapted to perform a task, where the operative structure includes a circular blade having a perimeter and teeth disposed about the perimeter, where the blade is adapted to spin, and where the blade when spinning cuts an object that moves into contact with the teeth;a detection circuit to detect when a person is in contact with the teeth when the blade is spinning, where the detection circuit includes an oscillator that generates an oscillating signal, where the detection circuit also includes an electrical connection between the oscillator and the blade, where the oscillating signal is imparted on the blade through the electrical connection, where the detection circuit further includes a controller that ...

SAFETY SYSTEM AND METHOD FOR CUTTING MACHINE

A safety system prevents cutting machine operators from being accidentally carried through the infeed chute into the machine's cutting mechanism. An operator wears a safety device on his wrist and/or ankle and a sensor array mounts on opposing sides of the cutting machine's infeed chute. The sensor array elements are wound in opposite directions and connect in series opposing. The magnetic field of the safety device induces a current in the sensor array as it moves in the proximity of the sensor array. The safety system generates a signal which is proportional to the sum of the induced currents. When the signal exceeds a threshold, the safety system shuts off power to the feed mechanism and/or the cutting blades of the cutting machine, preventing injury to the operator. 1a sensor array comprising at least two sensor elements having conductive windings, each sensor element comprising a protective plate and a conductive winding, each conductive winding comprising at least one loop of wire, the sensor elements mounted on opposing sides of an infeed chute;a sensor circuit configured to sense a current induced in the conductive windings by a magnetic field of a magnetic safety device, the current induced by moving the magnetic safety device proximate to the sensor array, the sensor circuit further comprising an amplifier that generates an amplified signal proportional to the current; anda comparator to compare the amplified signal to a threshold value, wherein the operation of the machine is interrupted when the amplified signal is greater than the threshold value.. A safety system for a machine comprising: Any and all applications for which a foreign or domestic priority claim is identified in the Application Data Sheet, or any correction thereto, are hereby incorporated by reference into this application under 37 CFR 1.57.This invention relates, generally, to automatically stopping the operation of machinery, and more particularly, to cutting machines, such as wood ...

Foerfarande foer matningsavbrytning i en transportabel hugganordning

Feeding wood chipping

Wooden logs are chipped by alternating forward feed of the log towards a cutting device, to obtain cutting and retracting the log from the cutting device, either as instigated manually or when the cutter speed drops below a predetermined value.

Apparatus and method for detecting when a web is not being perforated

The present invention provides a web perforating apparatus which includes a system for detecting and indicating when a blade in the apparatus is broken, dull or otherwise not perforating the web. The apparatus is typically used with rewinders or other similar machines that produce perforated sheets of products, such as paper, using sets of stationary anvil blades and rotating perforating blades. The apparatus comprises at least one anvil including a blade holder and an anvil blade which is positioned within the blade holder. The blade holder is formed of an insulating material for electrically isolating the anvil blade from the machine frame of the rewinder. An electrical conductor is coupled to the anvil blade for supplying an electric current to the anvil blade from a current source. The apparatus also includes at least one grounded perforating blade for moving relative to the anvil blade and cooperating with the anvil blade to perforate the web at predetermined points along its length. The perforating blade will contact the anvil blade after perforating the web. A closed circuit is formed and maintained along the anvil blade at points where the blades are in contact with each other. The apparatus further includes means for detecting if a closed circuit has been formed and maintained along the anvil blade when the perforating blade moves into a position where the blades should contact each other.

Detection systems for power equipment

Improved methods to detect when a human body contacts a predetermined portion of a machine are disclosed. The methods distinguish contact with a person from contact with other materials. The methods are particularly applicable in woodworking equipment such as table saws to distinguish contact between a person and the blade of the saw from contact between the blade and wet or green wood.

Detection systems for power equipment

Improved methods to detect when a human body contacts a predetermined portion of a machine are disclosed. The methods distinguish contact with a person from contact with other materials. The methods are particularly applicable in woodworking equipment such as table saws to distinguish contact between a person and the blade of the saw from contact between the blade and wet or green wood.

Apparatus for measuring a cutting blade width in a cutting apparatus

An apparatus for measuring the width of a cutting blade in a linear motor is activated when the cutting blade is raised. A working pin is advanced and one end of a detecting pin is abutted against an edge of the cutting blade. Thereafter, the working pin is returned. The blade width is derived by deducting the number of inputted driving pulses in returning from the advanced position of the detecting pin. The cutting blade is polished each polishing cycle for predetermined times by polishing rollers. The width of the cutting blade is measured by blade width detecting means during each predetermined polishing cycle. The measurement value of the blade width is fed back into a control device so that the subsequent polishing time of the cutting blade with the polishing rollers is adjusted until it becomes appropriate. The expiration of the useful life of the polishing rollers is determined when a long polishing time is required.

Device for preventing collision of two cutting tools

The invention relates to a collision-preventing control system for two cutters, to be moved towards one another, of a computer-controlled cutting installation. With this control system, it is possible to detect the actual position of each cutter during the cutting process. The proximity of the two cutters can be determined and compared with a previously set tolerated proximity via comparators arranged in the arithmetic unit. As soon as the tolerated proximity is reached, the control system switches the cutting installation off. In addition, an electrical safety circuit is specified, by means of which it is not possible for the cutting installation, after being automatically switched off, to start up again automatically. …<IMAGE>…

Detector for cutting curve degree in band sawing machine

Apparatus for cutting elongate fibers

用于切断细长纤维束的设备包括一个具有可逐一识别的刀片(12)的切刀缠绕筒(10)，该设备采用一个检测器(18)对缠绕筒(10)上的当一实体异物(17)的位置进行检测。另外的检测器(26，34)检测在缠绕着材料的切刀缠绕筒(10)与协同工作的压力滚子(11)之间界面上的力。实体异物的位置与所检测的力建立起关系以确定在每个刀片(12)上标志该刀片的锋利性或无损性状态的力值。

Wafer sawing apparatus

A wafer sawing apparatus comprises an electrically conductive chuck table surrounding a suction plate and tactile sensing lines formed on the upper surface of the suction plate. At least one end of each tactile sensing line is electrically connected to the table body. A controller controls the chuck table and a scribing blade. The controller is electrically connected to both elements. The controller comprises a tactile sensing unit connected to the table body for sensing contact of the scribing blade with the tactile sensing lines or the table body and an equipment stop unit for stopping the scribing blade. The controller further comprises a zero point adjusting unit for receiving a contact signal from the tactile sensing unit and for adjusting a zero point of the scribing blade, and a switching unit connecting the tactile sensing unit to the zero point adjusting unit or the equipment stop unit.

Cutting apparatus

본 발명은, 절단날의 날끝과 공작물의 적재면(테이블이나 인덱스테이블의 표면)과의 사이를 평행하게 하여 공작물의 성질에 따른 절단이나 하프컷을 행할 수 있는 커팅장치에 관한 것으로, 칼럼(A2)에 절단날(B)을 보유하는 지지체(A3)를 동 절단날(B)의 칼날의 길이방향의 경동각도를 제어이동 가능하게 설치하고, 상기 지지체(A3)에 설치한 제어이동 가능한 구동원(M1)으로 절단날(B)의 지지체(A3)에 대한 상하이동을 제어하여, 인덱스테이블(T) 표면과 날끝을 평행관계로 하여 절단 또는 하프컷 한다. 서보모터, 에어실린더, 리니어모터, 유압서보모터, 캠 등의 각각 달리하는 구동원과, 그 구동원으로 상하로 움직이는 절단날(B)을 구비하여 각각 유닛화 하고, 커팅장치(A)의 칼럼(A2)에 선택적으로 교환가능하게 부착한다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device capable of cutting or half-cutting in accordance with the properties of a workpiece by making a parallel between the blade edge of the cutting blade and the loading surface of the workpiece (the surface of a table or index table). A control movable drive source provided with a support body A3 holding the cutting blade B in a longitudinal direction so that the tilt angle in the longitudinal direction of the blade of the copper cutting blade B can be controlled and installed on the support body A3. M1) is used to control the swing motion of the cutting blade B with respect to the support A3, so that the surface of the index table T and the blade tip are cut or half cut in parallel. A drive source of a servo motor, an air cylinder, a linear motor, a hydraulic servo motor, a cam, and the like, and a cutting blade B that moves up and down by the drive source, are each unitized to form a unit (A2) of the cutting device A. Is optionally interchangeable.

Patent FR2379909B1

Detection systems for power equipment

Methods to detect when a human body contacts a predetermined portion of a machine are disclosed. The methods distinguish contact with a person from contact with other materials. The methods are particularly applicable in woodworking equipment such as power saws to distinguish contact between a person and the blade of the saw from contact between the blade and wet or green wood. Woodworking machines and memory devices for use in woodworking machines having safety systems designed to detect a dangerous condition between a human and a dangerous portion of the woodworking machine and to trigger some action to mitigate the dangerous condition are also disclosed.

APPARATUS FOR DETECTING THE BLADE GAP OF A BAND SAW

APPARATUS FOR DETECTING DEVIATIONS OF THE BLADE OF A BAND SAW

L'invention concerne un appareil permettant de détecter les déviations de la lame d'une scie à ruban La scie à ruban 1 comprend un bras de détection 45 monté pivotant entre un ensemble de guidage 21 qui guide la lame il et une pièce W à découper, une des extrémités du bras étant toujours maintenue en appui contre un des côtés de la lame Il, et un dispositif qui détecte le déplacement de l'autre extrémité du bras et commande le fonctionnement de la scie à ruban 1, ce dispositif étant monté en regard de l'autre extrémité du bras de détection. L'appareil de l'invention s'applique notamment aux scies à ruban horizontales automatiques The invention relates to an apparatus for detecting deflections of the blade of a band saw. The band saw 1 comprises a detection arm 45 pivotally mounted between a guide assembly 21 which guides the blade 11 and a workpiece W to be cut. , one of the ends of the arm still being kept in abutment against one of the sides of the blade II, and a device which detects the movement of the other end of the arm and controls the operation of the band saw 1, this device being mounted in look at the other end of the sensing arm. The apparatus of the invention applies in particular to automatic horizontal band saws

ANOMALY DETECTOR OF A TOOL

DETECTEUR D'ANOMALIE SUR UN OUTIL UTILISABLE, DANS UNE MACHINE-OUTIL, POUR DETECTER TOUTE ANOMALIE SE PRODUISANT SUR L'OUTIL MONTE SUR UN ARBRE DE MONTAGE DE L'OUTIL. LORSQUE L'ARBRE 5 PORTANT L'OUTIL EST DANS UNE POSITION CORRECTE PAR RAPPORT A UN CORPS TUBULAIRE 4 FIXE A LA BROCHE 2 DE LA MACHINE, LA PRESSION D'AIR FOURNIE PAR UNE SOURCE D'AIR 44 DEMEURE CONSTANTE. LORSQU'UNE RESISTANCE ANORMALE EST APPLIQUEE A L'ARBRE 5, CE DERNIER RECULE EN ROTATION PAR RAPPORT AU CORPS TUBULAIRE 4 DE FACON QU'UN PASSAGE D'ECHAPPEMENT D'AIR 8 SOIT OBTURE PAR L'ARBRE. UN DETECTEUR DE PRESSION 46 DETECTE UNE AUGMENTATION ANORMALE DE PRESSION DANS LA CANALISATION 43 ET PRODUIT UN SIGNAL D'ARRET DE LA BROCHE, CE QUI PROTEGE L'OUTIL DE TOUT DOMMAGE. ANOMALY DETECTOR ON A USABLE TOOL, IN A MACHINE TOOL, TO DETECT ANY ANOMALY OCCURRING ON THE TOOL MOUNTED ON A TOOL MOUNTING SHAFT. WHEN THE SHAFT 5 CARRYING THE TOOL IS IN A CORRECT POSITION IN RELATION TO A TUBULAR BODY 4 ATTACHED TO THE MACHINE SPINDLE 2, THE AIR PRESSURE PROVIDED BY AN AIR SOURCE 44 REMAINS CONSTANT. WHEN AN ABNORMAL RESISTANCE IS APPLIED TO SHAFT 5, THE LATTER ROTATION BACKWARDS RELATIVE TO TUBULAR BODY 4 SO THAT AN EXHAUST PASSAGE 8 IS OBSTRUCTED BY THE SHAFT. A PRESSURE SENSOR 46 DETECTS AN ABNORMAL PRESSURE INCREASE IN LINE 43 AND PRODUCES A SPINDLE STOP SIGNAL, PROTECTING THE TOOL FROM DAMAGE.

PROCESS FOR CUTTING A SHEET MATERIAL

Procédé de coupe d'une matière en feuilles à l'aide d'une machine à commande automatique comprenant une lame à mouvement alternatif. Il consiste à mettre en oeuvre un programme de mouvements auxiliaires de la machine pour modifier les mouvements fondamentaux de la lame et de la matière, dans des conditions choisies, les mouvements auxiliaires et les conditions correspondantes étant enregistrés sous la forme d'un programme qui les en corrélation. Le programme correspondant aux mouvements spéciaux est extrait sélectivement du programme de l'ordinateur qui commande la machine, lorsque les conditions correspondantes se présentent et les mouvements sont utilisés pour améliorer le fonctionnement de la machine. Application aux machines qui découpent des piles de morceaux de tissu suivant le contour d'un patron. Method of cutting a material into sheets using an automatically controlled machine comprising a reciprocating blade. It consists in implementing a program of auxiliary movements of the machine to modify the fundamental movements of the blade and of the material, under selected conditions, the auxiliary movements and the corresponding conditions being recorded in the form of a program which them. related to. The program corresponding to the special movements is selectively extracted from the program of the computer which controls the machine, when the corresponding conditions arise and the movements are used to improve the operation of the machine. Application to machines which cut stacks of pieces of fabric along the outline of a pattern.

RIBBON SAW EQUIPPED WITH A CUTTING WIDTH DETECTION DEVICE

L'INVENTION CONCERNE LES SCIES A RUBAN. ELLE SE RAPPORTE A UNE SCIE A RUBAN DANS LAQUELLE UN DISPOSITIF 39 DETECTE L'ECART DE COUPE DE LA LAME ET ARRETE LA MACHINE LORSQUE CELLE-CI S'ECARTE TROP D'UNE VALEUR QUI PEUT ETRE REVISEE EN FONCTION DE LA LARGEUR DE COUPE DANS LA PIECE W. UN DISPOSITIF 45 DETECTE LA PRESENCE DE LA LAME SUR UNE ROUE MOTRICE 21 ET ARRETE LE FONCTIONNEMENT DE LA MACHINE LORSQUE LA LAME SORT DE LA ROUE. UNE BROSSE METALLIQUE 47 NETTOIE LA LAME, ET ELLE PEUT ETRE FACILEMENT REMPLACEE. ENFIN, UN TRANSPORTEUR 59 CASSE LA SCIURE QUI PEUT S'AGGLOMERER ET PERMET AINSI UNE EVACUATION FACILE. APPLICATION AUX SCIES A RUBAN DESTINEES A SCIER AUTOMATIQUEMENT DES MORCEAUX DE BOIS. THE INVENTION RELATES TO BAND SAWS. IT RELATES TO A BAND SAW IN WHICH A DEVICE 39 DETECTS THE CUTTING GAP OF THE BLADE AND STOPPING THE MACHINE WHEN IT DEVIATES TOO MUCH A VALUE WHICH CAN BE REVISED DEPENDING ON THE CUT WIDTH IN PART W. A DEVICE 45 DETECTS THE PRESENCE OF THE BLADE ON A DRIVE WHEEL 21 AND STOPPING THE OPERATION OF THE MACHINE WHEN THE BLADE COMES OUT OF THE WHEEL. A METAL BRUSH 47 CLEANS THE BLADE, AND IT CAN BE EASILY REPLACED. FINALLY, A TRANSPORTER 59 BREAKS THE SAWDUST WHICH MAY AGGGLOMERATE AND THUS ALLOWS EASY EVACUATION. APPLICATION TO BAND SAWS INTENDED TO AUTOMATICALLY SAW WOOD PIECES.

METHOD AND APPARATUS FOR DETECTING THE CUTTING RESISTANCE OF BAND SAWS

L'INVENTION CONCERNE LE REGLAGE DES SCIES A RUBAN EN FONCTION DE LA RESISTANCE DE COUPE. ELLE SE RAPPORTE A UNE SCIE A RUBAN DANS LAQUELLE LE DEPLACEMENT DE LA LAME DE SCIE 11 EST TRANSMIS PAR UN ORGANE 57 A UN ORGANE BASCULANT 77 QUI MULTIPLIE LE DEPLACEMENT DE LA LAME DE SCIE ET PORTE UNE SUBSTANCE MAGNETIQUE 75 DONT LES DEPLACEMENTS SONT DETECTES PAR UN ORGANE 83. APPLICATION AUX SCIES AUTOMATIQUES A RUBAN. THE INVENTION CONCERNS THE ADJUSTMENT OF BAND SAWS AS A FUNCTION OF THE CUTTING RESISTANCE. IT RELATES TO A BANDSAW IN WHICH THE MOVEMENT OF THE SAW BLADE 11 IS TRANSMITTED BY A BODY 57 TO A TILTING BODY 77 WHICH MULTIPLIES THE MOVEMENT OF THE SAW BLADE AND CARRIES A MAGNETIC SUBSTANCE 75 WHOSE MOVEMENTS ARE DETECTED BY AN ORGAN 83. APPLICATION TO AUTOMATIC BAND SAWS.

APPARATUS FOR DETECTING THE BLADE GAP OF A BAND SAW

L'INVENTION CONCERNE UN APPAREIL DE DETECTION DE L'ECART DE LA LAME D'UNE SCIE A RUBAN DE TYPE HORIZONTAL. ELLE SE RAPPORTE A UN APPAREIL DANS LEQUEL LES DEPLACEMENTS DE LA LAME 11 SONT DETECTES PAR UN ORGANE 47 MONTE SUR UN LEVIER PIVOTANT 45 QUI REPOUSSE UN AUTRE LEVIER PIVOTANT 53 QUI PORTE UN ELEMENT MAGNETIQUE 55 SE DEPLACANT EN FACE D'UN CAPTEUR 63. UN CIRCUIT ELECTRONIQUE TRAITE LE SIGNAL DU CAPTEUR 63 ET ARRETE LA SCIE A RUBAN LORSQUE L'ECART DE LA LAME EST TROP IMPORTANT. APPLICATION AUX SCIES A RUBAN DE TYPE HORIZONTAL.

Band saw

This band saw comprises a feed vice 55 intended to cause the workpiece to advance alternately in such a way that it approaches a main vice 53 or moves away from it, and a device for detecting the workpiece 57 which detects the presence or absence of a workpiece on the feed vice on the main vice side. Application to band saws intended to automatically cut pieces of wood.

DETECTOR DEVICE FOR BAND SAW BLADES IN BAND SAW MACHINES

Acoustic emission severance detector and method

The invention has utility generally for monitoring any part for severance of the part. The invention is specifically useful for monitoring severance of a tension blade in a tension blade grid. For general monitoring of a part, the apparatus has wireless connection between the sensing unit and the control unit. The wireless connection is achieved with a transmit/receive unit using radiofrequency power transfer for electrical power and using infrared transmitters and receivers for signal transfer. For food processing, specifically for a vegetable cutting method employing at least one tension blade in a first tension blade grid through which vegetables are passed for cutting the vegetables wherein the at least one tension blade is severed during the cutting, the invention provides for diverting the vegetables to a second tension blade grid. Diversion is accomplished with an acoustic emission sensor acoustically coupled to the at least one tension blade so that during the vegetable cutting, the acoustic emission sensor detects acoustic energy from tension blade severance. The acoustic energy is converted to an electronic signal that is compared in a microprocessor to a threshold. In a severance condition, an actuator receives an alarm signal from the microprocessor and diverts the vegetables to the second tension blade grid.

Slide control device of press

Learning control is adopted in slide control of a press, and the actual behavior pattern of the slide (4) is converged to the optimum pattern thereby breakage of a metal mold or the like can be prevented. The slide control device is provided with a linear motor (8 to 11) or a servo motor driving the slide (4) in reciprocation, a position detector (12 to 15) detecting position of the slide (4), and a control circuit fixing and storing previously the command value of the optimum pattern of behavior of the slide, and calculating error between the real position data from the position detector and the fixed command value of the optimum pattern in a prescribed period of time from the drive start of the slide, and correcting the command value to be outputted in order to eliminate the error and outputting the command value after the correction and controlling the linear motor or the servo motor.

Table saws with safety systems

Table saws are disclosed. The table saws may include a circular blade, an elevation mechanism configured to raise and lower the blade relative to the work surface; and a spring to provide a force biasing the blade up or down relative to the work surface. The spring may be a gas spring connected between a trunnion and an elevation plate.

SET FOR INTERRUPTING FEED BY A TRANSPORTABLE HACKING MACHINE

METHOD AND APPARATUS FOR DETECTING THE CUTTING RESISTANCE OF BAND SAWS

Puncher

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Cutting tool safety system

A safer woodworking machine is disclosed. The machine includes a cutting tool and a motor adapted to drive the cutting tool. The machine further includes a detection system to detect a dangerous condition between the cutting tool and a person, such as a person coming into contact with the cutting tool. A reaction system is provided to disable the cutting tool, such as by covering, blocking, destroying, wrapping, etc., upon detection by the detection system of the dangerous condition.

Cutting device

本发明的目的是提供一种切割装置,将切断刃的刃尖与工件的载物面(转台的表面)之间相平行,进行根据工件性质的切断或半切断。在立柱A2上可控制切断刃B在刀刃长度方向偏斜角度地方式设置带有切断刃B的支持体A3,用设置在前述支持体A3上的可控制运动的驱动源M1,控制切断刃B相对支持体A3上下运动,将转台T表面与刃尖处于平行关系,以实现切断或半切断。具有伺服电机、汽缸、线性电机、液压伺服电机、凸轮等各种不同的驱动源和在该驱动源作用下实现动作的切断刃,将它们分别组件化,可以有选择地更换方式装卸到切割装置A的立柱A2上。

Detection system for power equipment

Woodworking machines including conductive cutters adapted to cut workpieces, and motors adapted to drive the cutters are disclosed. The machines also include a contact detection system adapted to detect contact between a person and the cutter, and to distinguish contact between the person and the cutter from contact between the workpiece and the cutter. The machines further include a reaction system adapted to cause a predetermined action to take place upon detection of contact between the person and the cutter by the contact detection system.

BRUSH DETECTOR FROM ACOUSTIC HEAT OUTPUT AND METHOD

Method and apparatus for cutting carpet designs

A method and apparatus is disclosed for cutting a sculptured pattern in carpet pile. The apparatus has a carpet clipping head carried by a carriage means that can move the clipping head horizontally, vertically and rotationally. Instructions from memory associated with a computer cause the carriage to move the carpet clipper along a predetermined route to cut the sculptured pattern in the carpet. The apparatus also senses the temperature of the clipping head and shuts off the apparatus if overheating occurs. A vacuum mechanism is provided to remove carpet cuttings during operation. The apparatus also dispenses lubricating fluid to the clipper head.

Wafer sawing apparatus

A wafer sawing apparatus comprises an electrically conductive chuck table surrounding a suction plate and tactile sensing lines formed on the upper surface of the suction plate. At least one end of each tactile sensing line is electrically connected to the table body. A controller controls the chuck table and a scribing blade. The controller is electrically connected to both elements. The controller comprises a tactile sensing unit connected to the table body for sensing contact of the scribing blade with the tactile sensing lines or the table body and an equipment stop unit for stopping the scribing blade. The controller further comprises a zero point adjusting unit for receiving a contact signal from the tactile sensing unit and for adjusting a zero point of the scribing blade, and a switching unit connecting the tactile sensing unit to the zero point adjusting unit or the equipment stop unit.

Apparatus for cutting elongate fibres

Apparatus for cutting elongate fibres including a cutter reel (10), having specifically identifiable blades (12), utilizes a sensor (18) to detect the position of a physical anomaly (17) on the reel (10). Additional sensors (26,34) sense the force at the interface between the cutter reel (10) the material wrapped thereon and the associated pressure roller (11). The position of the physical anomaly is correlated with the sensed force to determine the magnitude thereof at each blade (12), which is indicative of the condition of the blade with respect to sharpness or intactness.

Method of cutting sheet material with scheduled supplementation

ABSTRACT OF THE DISCLOSURE A method of cutting sheet material with an automati-cally controlled cutting machine having a reciprocating cut-ting blade utilizes a schedule of auxiliary or supplemental machine motions to modify the basic or fundamental motions of a cutting blade and the sheet material under selected cut-ting conditions. The supplemental motions and corresponding conditions are determined in advance by means of cutting improvement tests and are recorded in a schedule correlating the motions and corresponding conditions. During subsequent cutting operations, the special motions are selectively ex-tracted from the schedule as the corresponding cutting condi-tions arise, and the motions are then employed to improve the overall cutting process.

Safety detection and protection system for power tools

A detection system for detecting a dangerous condition for an operator using a power tool of the type which has an exposed blade relative to a work surface and a protection system for minimizing, if not eliminating the possibility of a user being injured by contacting the blade. In one preferred embodiment of the present invention, a proximity detection system is capable of detecting the presence of a user near the blade of a table saw and a protection system that can either retract the blade below the work surface of the table saw or terminate the drive torque to the blade which can result in rapid stopping of the saw blade by a work piece that is being cut.

Bandsaw blade deviation detecting apparatus

Power tool safety mechanisms

本发明提供了一种用于检测使用者与动力工具(10)的运动部分(26)接触的传感机构(12)。此外，本发明提供了一种用于防止使用者与动力工具(10)的运动部分(26)接触的安全机构(14)。安全机构(14)配置为在接收到来自传感机构(12)的信号时启动。根据第一方面，安全机构(14)布置为可以迅速地将运动部分(26)从使用者肢体移开。作为选择，根据第二方面，安全机构(14)布置为可以迅速地将使用者的肢体从动力工具(10)的运动部分(26)推开。

Knife projection sensing system

A knife projection sensing system for cutting machines having a rotatable surface adapted to retain a plurality of cutting knives. The system employs a plurality of sensors mountable to the cutting machine to be stationary with respect to the rotatable surface. The sensors generate a signal capable of indicating the position of each cutting knife as the knives rotate past the sensors. A microprocessor in communication with the sensors analyzes the signal generated to determine the projection of each knife from a reference surface and to determine if the projection of at least one of the plurality of cutting knives deviates outside preset desirable limits. The projection status of the knives is communicated to an operator by a light display or paper printout. The system can be used to ensure that knives are correctly installed in the cutting machine and to monitor knife position during normal operation. The system can also be used to determine when knives need changing for sharpening. If the projection of the knives exceeds preset limits, the system will automatically shut down the cutting machine to prevent damage.

Patent DE3311390C2

Sheet material cutting device

Power tool safety mechanisms

A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14 ) for preventing prolonged user contact with the active portion (26) of a powe r tool (10) is provided. The safety mechanism (14) is configured to actuate up on receipt of a signal from the sensing mechanism (12). According to a first aspect, the safety mechanism (14) is arranged to rapidly displace the active portion (26) away from a user extremity. Alternatively, according to a secon d aspect, the safety mechanism (14) is arranged to rapidly urge an extremity o f the user away from the active portion (26) of the power tool (10).

Acoustic emission severance detector and method

Method for mounting devices on a substrate

The invention relates to a method and apparatus which is intended to equip a support substrate with integrated circuit devices of different kinds mounted originally on films. The apparatus includes a machine having cutting heads each associated with the film, and soldering heads. The substrate is mounted on a plate which is movable on a table in a direction perpendicular to the movement of the table, which movement takes place on a threaded spindle drive by a motor. The operation of the machine is monitored and controlled by a unit such as a computer. The invention is applicable in particular to mounting such devices on substrates intended for data-processing assemblies.

Band sawing machine

Safety system for machine tools

A safety system for a rotary saw or other dangerous machine tools features a flesh-sensing circuit (14, 19), located on a safety guard (16) surrounding a dangerous machine part, which generates an electronic signal to trigger emergency stopping of the machine before the operator can contact the dangerous machine part. The stopping means preferably employs DC injection, winding current direction reversal and/or electromagnetic motor braking, in the event of detection of operator contact with the safety guarding device. The system is adapted to be used both with newly-manufactured machine tools and by retrofitting onto previously-manufactured machine tools, by in-the-field modifications.

SAFETY METHOD AND DEVICE FOR CONTROLLING THE MOVEMENT OF THE WORKPIECE IN A PRESS, ESPECIALLY IN A PUNCHING PRESS

Apparatus and method for detecting dangerous conditions in power equipment

A machine such as a saw, jointer, planer, etc. is disclosed. The machine has cutting tool, a direct drive mechanism configured to move the cutting tool, a detection system adapted to detect the occurrence of an unsafe condition between a person and the cutting tool, and a reaction system adapted to mitigate the unsafe condition upon the detection of the unsafe condition by the detection system. An electrical signal is imparted on the cuffing tool, and the signal is used to determine the occurrence of the unsafe condition. The direct drive mechanism is electrically isolated so that the electric signal may be imparted on the cutting tool. The electric isolation may be achieved through configurations such as insulated bearings, a substantially non-conductive housing, and a substantially non-conductive coupling joining two shaft portions.

Brake device for band saws

Motion detecting system for use in a safety system for power equipment

A woodworking machine including a detection system adapted to detect a dangerous condition between a person and a working portion of the machine is disclosed. The machine includes a reaction system associated with the detection system to cause a predetermined action to take place relative to the working portion upon detection of the dangerous condition. A motion detection system is adapted to detect motion of the working portion and to disable the reaction system when the working portion is not moving. The motion detection system may include a sensor, such as a Hall effect sensor, an electromagnetic field sensor, an optical sensor, or an electrical sensor. The woodworking machine may take the form of a saw, the working portion may be a blade adapted to cut when spinning, and the dangerous condition may be a person contacting the blade.

Kerf bending detector in band sawing machine

Safety systems for power equipment

Machines with safety systems are disclosed. The machine may take the form of woodworking machines including table saws, band saws, miter saws, hand-held circular saws, pneumatic chop saws, radial-arm saws, jointers, planars, routers and shapers. The machines may include an operative structure configured to perform a task, where the operative structure includes a cutting tool adapted to move in at least one motion, and a safety system adapted to detect the occurrence of an unsafe condition between a person and the cutting tool and for mitigating the unsafe condition. The safety system may include a detection subsystem and a reaction subsystem. The machine may also include a bypass or override mode where in an injury mitigation system is disabled for certain cuts.

Blade width measuring device for cutting blades

Miter saw with safety system

A miter saw is disclosed having a base, a blade supported by the base, a detection system adapted to detect a dangerous condition between a person and the blade, and a reaction system associated with the detection system to cause a predetermined action to take place upon detection of the dangerous condition. The blade is rotatable, and moves into a cutting zone to cut a workpiece. The predetermined action may be to retract the blade from the cutting zone.

Dectection systems for power equipment

Improved methods to detect when a human body contacts a predetermined portion of a machine are disclosed. The methods distinguish contact with a person from contact with other materials. The methods are particularly applicable in woodworking equipment such as table saws to distinguish contact between a person and the blade of the saw from contact between the blade and wet or green wood.

Perforating apparatus for transverse perforations in webs of paper-like material

A machine is described for perforating webs of material, such as toilet paper. The machine includes a cylinder (17) mounted on the frame of the machine and around which cylinder the web is carried as the web passes through the machine. The cylinder has a plurality of blades, one edge of each extending beyond the surface of the cylinder and parallel to the axis of the cylinder. A support (21) for a cooperating blade (33) is pivotally mounted on the machine in a manner which permits the cooperating blade (33) to move toward and away from the blades in the cylinder (17). The cooperating blade (33) extends at an angle to the axis of the cylinder and consists of a plurality of segments, each of which is supported in a block (25) which fits into seats in the support. The seats extend in a line parallel to the cylinder axis.

Detection systems for power equipment

Methods to detect when a human body contacts a predetermined portion of a machine are disclosed. The methods distinguish contact with a person from contact with other materials. The methods are particularly applicable in woodworking equipment such as power saws to distinguish contact between a person and the blade of the saw from contact between the blade and wet or green wood. Woodworking machines and memory devices for use in woodworking machines having safety systems designed to detect a dangerous condition between a human and a dangerous portion of the woodworking machine and to trigger some action to mitigate the dangerous condition are also disclosed.

Power tool safety mechanisms

A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power tool (10) is provided. The safety mechanism (14) is configured to actuate upon receipt of a signal from the sensing mechanism (12). According to a first aspect, the safety mechanism (14) is arranged to rapidly displace the active portion (26) away from a user extremity. Alternatively, according to a second aspect, the safety mechanism (14) is arranged to rapidly urge an extremity of the user away from the active portion (26) of the power tool (10).

Table saw with dropping blade

A power tool in one embodiment is a table saw which includes a latch hold mechanism, a swing arm movable along a swing arm path between a first position adjacent the latch hold mechanism and a second position spaced apart from the latch hold mechanism, a latch movable between a first position whereat the swing arm is maintained at the first position and a second position whereat the swing arm is not maintained at the first position, an actuating device configured to transfer a force to the swing arm when the swing arm is maintained at the first position, and a control system configured to control the actuating device to transfer a force to the swing arm when the swing arm is maintained at the first position sufficient to move the latch from the first position to the second position.

Safety device for driving a synchronous cross cutter

Knife projection sensing system

A knife projection sensing system for cutting machines having a rotatable surface adapted to retain a plurality of cutting knives. The system employs a plurality of sensors mountable to the cutting machine to be stationary with respect to the rotatable surface. The sensors generate a signal capable of indicating the position of each cutting knife as the knives rotate past the sensors. A microprocessor in communication with the sensors analyzes the signal generated to determine the projection of each knife from a reference surface and to determine if the projection of at least one of the plurality of cutting knives deviates outside preset desirable limits. The projection status of the knives is communicated to an operator by a light display or paper printout. The system can be used to ensure that knives are correctly installed in the cutting machine and to monitor knife position during normal operation. The system can also be used to determine when knives need changing for sharpening. If the projection of the knives exceeds preset limits, the system will automatically shut down the cutting machine to prevent damage.

Band saw

ABSTRACT OF INVENTION The invention relates to existing band saws powered by elec-trical motors. Prior arts of band saws are commonly designed with two wheels as support and glide path for band saws blades. They were commonly revealed through patent search such as: #2, 711, 195 inventor John A. Hill; patent #3, 480, 051 inventor Charles E. Gray; patent #3, 902, 391 inventor Harold Bond; patent #3, 908, 501 inventor Tsuneo Aizawa; and patent #4, 128, 031 inventor Masso Sato. My invention incorporates four wheels to form the saw blade glide or travel path. Therefore, the primary object of my invention, having four wheels, eliminates the large bulky wheels used for achieving height and depth Depth being the distance between the blade and frame. Height being the distance between the working surface area and the bottom portion of the guard. Prior arts have 2-24" wheels on the large models to achieve a 22" width of cut. Being such a large wheel, it has to be con-structed of heavy and warp free material. It also has to be per-fectly balanced to achieve smooth operation and requires larger bearings. To turn all these heavy metal wheels leads to more pow-er input. Normally a band saw of this size will take 2 to 5 HP electric motor, thus, overall height and weight of saw is gross. To achieve height of cut at 12", this type of saw needs two wheels of 24", which equals 48" plus the 12" height of the cut plus the guard and base stand. Overall height of the saw would be approx-imately 8" tall and weighing in at 1000 lb. It is another primary object of present saw to reduce height, weight, bulk, and power consumed. It can also be used as wall mounted or on a fixed or mobile stand that could incorporate brake leaded casters, thus making it a more compact and lighter, yet achieving same cutting depth or clearance being as stated. My invention can be made much cheaper and novel for consumers, present saw having smaller wheel circumference delivers more ...

Table saw with a tool return system

Safety system and method for cuttinig machine

A safety system prevents cutting machine operators from being accidentally carried through the infeed chute into the machine's cutting mechanism. An operator wears a safety device on his wrist and/or ankle and a sensor array mounts on opposing sides of the cutting machine's infeed chute. The sensor array elements are wound in opposite directions and connect in series opposing. The magnetic field of the safety device induces a current in the sensor array as it moves in the proximity of the sensor array. The safety system generates a signal which is proportional to the sum of the induced currents. When the signal exceeds a threshold, the safety system shuts off power to the feed mechanism and/or the cutting blades of the cutting machine, preventing injury to the operator.

Lead cutting blade and method for forming lead cutting blade

Device for mounting and removing die blankets of a rotary cutting anvil cylinder

Saw cover safety sensing device

A saw cover safety sensing device comprises a protecting cover; a sensing controller at one side of the protecting cover; a control circuit within the sensing controller; the control circuit serving for receiving electric static signals from a human body and emitting control signals; the sensing controller further comprising a power switch, at least one batteries, a plurality of LED lights and a transparent cover; at least one signal sensing wire connected to the sensing controller; each signal sensing wire having a metal foil sheet; one surface of the metal foil sheet being coated with glue so that the metal foil sheets and the signal sensing wires are adhered to the protecting cover; the signal sensing wire and metal foil sheets serving for detecting electric static signals emitted from a human body; and a buzzer connected to the sensing controller; the buzzer buzzes in response to electric static signals.

Cutting tool safety system

A woodworking machine is disclosed. The machine includes a cutting tool and a motor adapted to drive the cutting tool. The machine further includes a detection system to detect a dangerous condition between the cutting tool and a person, such as a person coming into contact with the cutting tool. A reaction system is provided to disable the cutting tool, such as by covering, blocking, destroying, wrapping, etc., upon detection by the detection system of the dangerous condition.

Cutting method of single crystal ingot

Logic control for fast-acting safety system

Woodworking machines including cutting tools and motors adapted to drive the cutting tools are disclosed. The machines also include a detection system adapted to detect a dangerous condition between the cutting tool and a person, and a reaction system adapted to perform a specified action upon detection of the dangerous condition. The machines further include a control system adapted to test the operability of at least a portion of the detection system and/or the reaction system. The control system is adapted to disable the motor if the tested portion is inoperable.

Cutting apparatus

A cutting apparatus is capable of cutting a work-piece depending upon the quality of the work-piece. The cutting apparatus produces parallelism between a knife edge of a cutting blade and a mounting face of the work-piece. A support having the blade is provided to a column capable of controlling a tilting angle of the blade in a blade length direction. Cutting is executed by controlling vertical movement of the blade. A driving source is capable of controlling movement linearly. The driving source produces a parallel relationship between a surface of a table and a knife edge. Different supports are each unitized to include a driving source and the blade vertically moved by the driving source. The different supports can be mounted interchangeably and selectively on a column of a cutting apparatus.

Brush cutter with safety device

A method and apparatus for safety for presses

To establish any trouble during the operation of the press when the upper tool reverses from contact with the work piece, the renewed contact between the upper tool and the ram is sensed at the end of the process. The work piece movement is controlled according to this renewed contact. A typical revolving press has a ram, and upper and lower rotating head, with upper and lower tools. The ram which is driven by an eccentric, is insulated from the rest of the press electrically, to allow sensing when the upper tool makes contact.

Rotating saw with balanced dynamic braking

An automatic braking system for a pivoting power tool includes a cutting assembly, a cutting arm supporting the cutting assembly, a hinge supporting the cutting arm through a pivot, a primary braking system operably connected to the cutting assembly, a secondary braking system operably connected to the hinge, and a safety circuit configured to sense an unsafe condition and, in response to sensing the unsafe condition, (i) control the primary braking system to oppose rotation of a blade supported by the cutting assembly, and (ii) control the secondary braking system to oppose rotation of the cutting arm.

Method of detecting misstrip for punching machine

Slide control device of press

Learning control is adopted in slide control of a press, and the actual behavior pattern of the slide is converged to the optimum pattern thereby breakage of a metal mold or the like can be prevented. The slide control device is provided with a linear motor or a servo motor driving the slide in reciprocation, a position detector detecting position of the slide, and a control circuit fixing and storing previously the command value of the optimum pattern of behavior of the slide, and calculating error between the real position data from the position detector and the fixed command value of the optimum pattern in a prescribed period of time from the drive start of the slide, and correcting the command value to be outputted in order to eliminate the error and outputting the command value after the correction and controlling the linear motor or the servo motor.

METHOD AND DEVICE FOR THE SAFETY OF PRESSES AND THE LIKE

DISPOSITIF DANS LEQUEL L'ABAISSEMENT DU COULISSEAU FERME LE CIRCUIT ELECTRIQUE PERMETTANT D'ENCLENCHER LE MOTEUR DE LA PRESSE. LE BATI 99 DE LA PRESSE 95 POSSEDE UN COULISSEAU 123 ET UN PORTE-OUTIL 103 DONT LES BRAS 105 ET 109 PORTENT RESPECTIVEMENT LES OUTILS INFERIEUR 107 ET SUPERIEUR 111. CELUI-CI GLISSE DANS UN ELEMENT TUBULAIRE 115 ET IL PORTE A SON SOMMET UN ELEMENT CONDUCTEUR 121 ISOLE PAR UN MATERIAU 119. QUAND LE COULISSEAU 123 S'APPUIE SUR L'ELEMENT 21 POUR EFFECTUER UN POINCONNAGE, IL FERME LE CIRCUIT ELECTRIQUE 93 CONSTITUE PAR LE BATI 99, LES PIECES 101 ET 105, LA SOURCE DE COURANT CONTINU E ET LA BOBINE L D'UN RELAIS R QUI FERME L'INTERRUPTEUR A, CE QUI FERME LE CIRCUIT DE COMMANDE DU MOTEUR DE LA PRESSE, BRANCHE EN C ET D. DEVICE IN WHICH THE LOWERING OF THE SLIDE CLOSES THE ELECTRICAL CIRCUIT ALLOWING TO ENGAGE THE PRESS MOTOR. THE BUILDING 99 OF THE PRESS 95 HAS A SLIDER 123 AND A TOOL HOLDER 103 WHOSE ARMS 105 AND 109 ARE RESPECTIVELY SUPPORTING THE LOWER 107 AND UPPER 111 TOOLS. THIS SLIDES IN A TUBULAR ELEMENT 115 AND IT CARRIES AN ELEMENT AT ITS TOP CONDUCTOR 121 ISOLATED BY A MATERIAL 119. WHEN SLIDER 123 LIES ON ELEMENT 21 TO PERFORM PUNCHING, IT CLOSES ELECTRICAL CIRCUIT 93 CONSTITUTED BY BOX 99, PARTS 101 AND 105, THE DC CURRENT SOURCE E AND COIL L OF A RELAY R WHICH CLOSES SWITCH A, WHICH CLOSES THE PRESS MOTOR CONTROL CIRCUIT, CONNECTED IN C AND D.

Method and apparatus for cutting semiconductor wafers

Improperly mounted wafer saw blades can damage wafers cut or diced with the blades. Embodiments of this invention employ sensors to measure a distance to the blade to help indicate if the blade is improperly mounted. In one method of the invention, a the distance to the blade face is measured as the blade is rotated and a variance in this measured distance is determined. If the variance is no greater than a predetermined maximum, the blade may be used to cut the wafer. In one apparatus of the invention, a wafer saw include a blade and a sensor. The sensor is adapted to monitor a distance to a face of the rotating blade. A processor coupled to the sensor may indicate if the distance to the face of the blade as it rotates deviates too far from a baseline position of the blade face.

Safety system for the drive of a synchronous cross cutter

A safety system for the drive of a cross cutter for a web of material, having an electrical or mechanical synchronizing system between the drives of the feed and cutting mechanism which is adjustable for the size of the piece to be cut and which consists of an adjustable asymmetrical mechanism and has speed control associated with the drive of the feed mechanism to limit the speed of the feed means on the basis of a signal corresponding to the setting of the asymmetrical mechanism. A function generator generates a signal to be applied to the speed control which is directly dependent thereon to define the speed value for the drive of the feed mechanism and wherein the function generator is responsive to the asymmetrical mechanism for size-related, maximum permissible web velocity.

There is the bench saw of decline saw blade

本发明涉及具有下降锯片的台锯。一实施例中的动力工具为台锯，其包括：一闩锁保持机构；一摇臂，可在邻近闩锁保持机构的第一摇臂位置和与闩锁保持机构间隔开的第二摇臂位置之间沿着摇臂路径移动；一闩锁，可在第一锁止位置和第二锁止位置之间移动，在第一锁止位置，摇臂保持在第一摇臂位置处，在第二锁止位置，摇臂不保持在第一摇臂位置处；一致动装置，设置用于当摇臂保持在第一位置时传递力给摇臂；和一控制系统，设置用于当摇臂保持在第一摇臂位置时控制致动装置给摇臂传递的力，该力足以将闩锁从第一锁止位置移动到第二锁止位置。

Brake mechanism for power equipment

Woodworking machines are disclosed having cutting tools adapted to cut workpieces. The machines include a detection system adapted to detect one or more dangerous conditions between a person and the cutting tool. The machines also include a brake mechanism having one or more braking components adapted to engage and stop the cutting tool in response to the detection of a dangerous condition.

Retraction system for use in power equipment

Woodworking machines are disclosed having movable cutting tools for cutting workpieces in a cutting region. The machines include a detection system adapted to detect one or more dangerous conditions between a person and the cutting tools, and a reaction system associated with the detection system. The reaction system is configured to retract the cutting tool at least partially away from the cutting region upon detection of a dangerous condition by the detection system.

Detecting deviation of a bandsaw blade