Способ определения жесткости направляющих подшипников двухопорных гидроагрегатов по результатам балансировки

Изобретение относится к области диагностики технического состояния гидроагрегатов, а именно к способу определения жесткости подшипников скольжения, используемых в качестве направляющих подшипников вертикального двухопорного гидроагрегата, по результатам балансировки его ротора. Настоящее изобретение может найти применение при ремонте и эксплуатации гидроагрегатов с направляющими подшипниками скольжения различных конструкций. Сущность изобретения заключается в том, что необходимые для определения жесткостей экспериментальные данные получают по результатам балансировки ротора гидроагрегата без дополнительного вывода гидроагрегата из эксплуатации и установки дополнительных систем измерений, экспериментально определенные виброперемещения и их приращения для гармоники оборотной частоты представляют в векторном виде, жесткости определяют отдельно для каждого из двух взаимно перпендикулярных направлений и для каждого из не менее чем четырех режимов работы гидроагрегата. Техническим результатом ...

Способ идентификации присоединенного момента инерции тела и устройство для его осуществления

FIELD: measuring equipment. SUBSTANCE: method for identifying the added moment of body inertia consists in the fact that the body is brought to reversely symmetrical precession rotation around the vertical axis by an active force moment, the differences in the work of the active force moments are measured through the differences in the consumed electricity, by which the moments of body inertia are determined analytically using the equation of energy change, using the frontier positions and moduli of angular velocity vector. The body in the form of a ship hull is immersed in the model basin up to the waterline or with a predetermined draft and one or more reversibly symmetric rotations are made by the elastic forces moment around the vertical axis of the body, measured from an arbitrarily chosen angular position containing the stage of free decelerated measured rotation and the stage of a controlled reverse symmetric rotation with torque of forces in the corresponding angular positions, the work of the forces' torque is measured on the reverse rotation in a limited angular interval through the consumed electric power, the added moment of the body inertia is determined using two boundary values of the moduli of the angular velocity vector. The device for determining the added moment of the body inertia ocontains an automated electric drive with an elastic element in the form of a twistable torsion, wherein the body in the form of a ship hull is fixed through its mass center with a rigid rod with a frame in the model basin. The elastic element in the form of an elastic rod consists of two parts, one of the parts is fixed on the frame and on the support, and the second - on the rigid rod and on the bottom of the model basin, wherein the electric drive and the frame with which the angle-code sensor shaft, fixed to the support, are fixed on the rigid rod, and the electric drive is made in the form of an electric motor with an encoder and an axisymmetric massive ...

УСТРОЙСТВО ДЛЯ ОБНАРУЖЕНИЯ МАСЛЯНОЙ РАЗБАЛАНСИРОВКИ В РОТОРЕ, РОТОР, СОДЕРЖАЩИЙ ТАКОЕ УСТРОЙСТВО, И УСТАНОВКА, ОСНАЩЕННАЯ ТАКИМ РОТОРОМ

... 1. Устройство для обнаружения масляной разбалансировки внутри ротора (2) в установке, отличающееся тем, что содержит средства (4, 8, 14, 24, 34, 36) приведения во вращение масла (100), присутствующего в роторе (2), со скоростью, практически равной скорости вращения ротора. 2. Устройство по п.1, отличающееся тем, что средства (4, 8, 14, 24, 34, 36) приведения во вращение масла содержат средства (4, 8, 14) улавливания масла (100) в роторе (2) при помощи действия центробежной силы. 3. Устройство по п.2, отличающееся тем, что средства (4, 8, 14, 24, 34, 36) улавливания масла содержат отсеки (8, 14), выполненные равномерно по окружности внутренней поверхности (6) ротора (2). 4. Устройство по п.3, отличающееся тем, что отсеки (8) являются отсеками, открытыми в сторону внутреннего пространства ротора (2) и образованными внутренней поверхностью (6) ротора (2) и практически продольными ребрами жесткости (4), выполненными на внутренней поверхности (6) ротора (2). 5. Устройство по п.3, отличающееся ...

Auswuchtverfahren und Auswuchtmaschine

Verfahren und Vorrichtung zur Optimierung der Laufruhe eines Kraftfahrzeugrades

Systeme und Verfahren zur Überwachung rotierender Einrichtungen

Ein System enthält einen ersten einheitlichen Messstreifen, der eingerichtet ist, um an einer Rotationskomponente an einer ersten axialen Position gesichert zu sein. Der erste einheitliche Messstreifen enthält einen ersten Satz von einem oder mehreren Fenstern, wobei jedes Fenster des ersten Satzes von einem oder mehreren Fenstern eingerichtet ist, um einer ersten jeweiligen tangentialen Position der Rotationskomponente an der ersten axialen Position zu entsprechen, und wobei jedes Fenster des ersten Satzes von einem oder mehreren Fenstern eingerichtet ist, um durch einen ersten Sensor detektierbar zu sein.

Rotor assembly system and method

A system for assembling a rotor stack having a plurality of rotor disks may include a measurement system for measuring characteristics of the rotor disks, a computer electronically coiuiected to {he measurement system for capturing data from the measurement system, and solid modeling software for creating a Virtual stack of the rotor disks optimized for concentricity.

DYNAMIC BALANCING MACHINES

... 1350522 Bearings W & T AVERY Ltd 15 March 1972 [12 May 1971] 11934/72 Heading F2A [Also in Division Gl] In a dynamic balancing machine including an angular position indicator for determining the angular position of the unbalance, the test body 1, 10, or 39 is supported by at least one hydrostatic bearing, and displacement of the test body within its bearing due to the unbalance is measured. The machine may be for single or multi-plane balancing and holds the test body during correction of the unbalance as well as during measurement. In Fig. 6, a balance spindle 39 having a mounting 48 for a test body (not shown) is supported during unbalance measurement by hydrostatic bearings 40, 42, a thrust bearing 41 reacting the axial thrust of the conical bearing 40. To hold the test body stationary during correction of the unbalance, the fluid supply to bearings 40, 42 is cut off and a line 47 pressurized to move a piston 43 and the shaft 39 axially, bringing the conical surfaces of bearing 40 into ...

Dynamic balancer for wheels

Measurement of axial displacement of a rotating shaft

A system for measuring axial displacement and/or vibration of a rotating shaft 10comprises a distance measuring sensor 18 located in a stationary position adjacent the shaft and a disk 14 mounted to rotate with the shaft that has a first target surface 16 in a plane normal to the axis of rotation of the shaft. A stationary second target surface 22 is located adjacent the shaft within the measuring range of the sensor and the disk is designed to interrupt the line of sight between the sensor and the second target surface during predetermined phases of rotation of the shaft (see figure 2). The output of the sensor to is processed to derive measurements of the distances from the sensor to the first and the second target surfaces. Measurements of the distance of the sensor from the second target surface are used to calibrate the sensor to correct for drift of the sensor output. A third target surface may be provided on the disk with measurements of its distance from the sensor used to compensate ...

MACHINE FOR BALANCING A BODY OF REVOLUTION

MECHANISM FOR IMBALANCE RECOGNITION

Method for determining a fluid dynamic bearing system non-repeatable knock the spectral power density

Die Erfindung betrifft ein Verfahren zur Bestimmung der spektralen Leistungsdichte des nicht wiederholbaren Schlages NRRO eines fluiddynamischen Lagersystems, wobei zur Bestimmung des nicht wiederholbaren Schlages NRRO die Rotorauslenkung als Funktion der Zeit gemessen wird. Erfindungsgemäß wird die spektrale Leistungsdichte mittels einer Fouriertransformation der gemessenen Rotorauslenkung unter Anwendung eines Multitaper-Verfahrens bestimmt.

EINRICHTUNG ZUR UNWUCHTERKENNUNG

BALANCING DEVICE, UNIFORMITY DEVICE AND METHODS FOR UTILIZING THE SAME

A balancing device, a uniformity device and an apparatus including the balancing device and the uniformity device are disclosed. Each of the balancing device and the uniformity device includes at least one multi-axis transducer. Methods are also disclosed.

BALANCING DEVICE, UNIFORMITY DEVICE AND METHODS FOR UTILIZING THE SAME

A balancing device (10b), a uniformity device (10b) and an apparatus (10", 10" ") including the balancing device (10b) and the uniformity device (10u) are disclosed. Each of the balancing device (10b) and the uniformity device (10u) includes at least one multi-axis transducer (50b, 50b', 114a) or three or more air spring members (114ub). Methods are also disclosed.

BALANCING DEVICE, UNIFORMITY DEVICE AND METHODS FOR UTILIZING THE SAME

A balancing device (10b), a uniformity device (10b) and an apparatus (10", 10" ") including the balancing device (10b) and the uniformity device (10u) are disclosed. Each of the balancing device (10b) and the uniformity device (10u) includes at least one multi-axis transducer (50b, 50b', 114a) or three or more air spring members (114ub). Methods are also disclosed.

METHOD AND APPARATUS FOR ANALYSING VEHICLE WHEELS

A method of analysing a vehicle wheel with a tyre, comprising rotating the vehicle wheel with a first number of revolutions for a first period of time, wherein a tread surface of the tyre is pressed with a first force against a first rotatable drum, the first force is measured with a first measuring device, and the first force is kept substantially constant; and rotating the vehicle wheel with a second number of revolutions for a second period of time, wherein the tread surface is pressed with a second force against the first drum or a second rotatable drum, and the second force is measured. An apparatus for analysing a vehicle wheel with a tyre, wherein the vehicle wheel is rotated with a first number of revolutions for a first period of time, wherein a tread surface of the tyre is pressed with a first force against a first rotatable drum, the first force is measured with a first measuring device, and the first force is kept substantially constant; and the vehicle wheel is rotated with ...

BALANCING METHOD AND PRODUCT

A low-speed balancing method ins provided for balancing a rotor to introduce balance corrections for reducing unbalance due to operation of the rotor at or near critical speeds without actually balancing the rotor at such critical speeds. The method is applicable for balancing a rotor in three, faun or more correction planes by utilising combinations of generic unbalance distributions of the rotor and predetermined mode shapes of the rotor at critical speeds: A simple method is presented which allows an operator using a low-speed balancing machine to determine measured corrections applicable to two plane of the rotor and then the operator effects at least a third correction to the rotor which is proportional to the first and second measured corrections and the unbalance/mode shape combustion. The operator then repeats the low-speed balancing sequence to determine final corrections at the first and second planes, which are then made for finally balancing the rotor.

Procédé et appareil pour déterminer le déséquilibre dynamique d'un élément de machine rotatif après qu'il a été statiquement équilibré.

Rotary component dynamic balancing machine

Rotary component dynamic balancing machine has mounting group with two oscillating parts with component mounting ...

Procedure and device for the impact or profile examination without firm center.

Apparatus for aligning a workpiece in a force centering pool.

Bei einer Vorrichtung zur Ausrichtung eines Werkstückes in einer Wuchtzentriervorrichtung ist vorgesehen, dass in einer Grundstellung ein oberer Flansch (1) und ein unterer Flansch (2) konzentrisch um eine Achse (3) einer Auswuchtspindel der Wuchtzentriervorrichtung angeordnet sind, wobei der obere Flansch (1 j eine Schnittstelle (4) für Spannmittel zum Spannen des Werkstücks und der untere Flansch (2) eine Schnittstelle (5) für Befestigungsmittel zur Befestigung der Vorrichtung an der Auswuchtspindel umfasst. Mindestens zwei Federelemente (22, 23) sind derart zwischen dem oberen und dem unteren Flansch (1,2) angeordnet, dass sich der obere Flansch (1) in der Grundstellung axial und radial ausschliesslich an den zwei Federelementen (22, 23) abstützt. Der obere Flansch (1) kann in der Grundstellung mit einer den Federelementen (22, 23) entgegengerichteten Kraft relativ zu dem unteren Flansch (2) in eine exzentrische Position bewegt werden. Eine Verschiebevorrichtung, die eine Druckfeder ...

Method for detecting rotating mechanical piece heat-caused unbalance and apparatus for implementing the method

DEVICE FOR the DETECTION Of an OIL UNBALANCE IN a ROTOR, ROTORCOMPORTANT SUCH a DEVICE, AND MACHINE EQUIPEE Of SUCH a ROTOR

Le dispositif pour la détection d'un balourd d'huile à l'intérieur d'un rotor (2) d'une machine comprend des moyens pour entraîner en rotation l'huile (100) présente dans le rotor (2) , avec une vitesse de rotation de l'huile sensiblement égale à la vitesse de rotation dudit rotor.

Balancing system working at low rotational speed - has spindle mounted on base and workpiece holder

Apparatus and method for calculating dynamic load radius of tire

Methods and systems for wheel balancer matching and flat spot correction

Methods and systems for a computer implemented method of analyzing a vehicle wheel assembly including a tire and a rim is provided. The method includes removably mounting a wheel assembly on a shaft having a longitudinal axis and being rotatable about the longitudinal axis to rotate the wheel assembly, applying a substantially radial force to the wheel assembly during rotation thereof, and measuring variations in the radial force from at least one of radial runout, tire uniformity, and tire flatspotting. The method also includes determining a condition of the wheel assembly based on a spectral density analysis of the measured variations.

Method for testing the thermally induced unbalance of a rotating machine part, in particular the rotor of a turbogenerator, and device for carrying out the method

In a method for testing the thermally induced unbalance of a rotating machine part, in particular the rotor of a turbogenerator, the rotating machine part or the rotor balanced at normal temperature is brought in the demounted state first to nominal rotational speed and held at this, while its temperature is varied and, at the same time, the transient variations in oscillations of the rotating machine part or rotor which are caused are measured. During the test, the rotating machine part or the rotor is surrounded at least partially by a closed heating cell, a cooling medium flows around and/or flows through the rotating machine part or the rotor in the heating cell, and the heating of the rotating machine part or of the rotor takes place essentially due to the flow-dynamic losses arising from the interaction of the rotating machine part or of the rotor with the circulating cooling medium.

Means for administering an injectable product in doses

A device for dispensing precise amounts of a substance including at least one detector coupled to the device for detecting accelerations, wherein the detector device is triggered and/or read in a continuous or clocked manner and reversibly or irreversibly changes an indicator when a selected acceleration threshold is exceeded.

Dynamic unbalance calculating method and dynamic unbalance testing device

The magnitudes and angular positions of dynamic unbalance in rotor are determined by the calculating method of this invention from the original vibration vectors. The original vibration vectors (magnitude and angular position) obtained by measurements using a vibration sensor at bearings supporting the rotor has its specific unbalance calculated from the dynamic unbalance vectors (magnitude, angular position) in the rotor obtained by the vector calculation method on the basis of the ratios of the distances between the bearings to the distance between the two correction planes chosen arbitrarily in the rotor.

Brake drum manufacture

Manufacture of brake drums having an annular brake ring and a drum back for mounting the ring for rotation about an axis defined at least in part by one or more openings in the back. Radial runout of the brake ring is measured, and the mounting openings in the drum back are located at a position to substantially cancel the first harmonic of measured radial runout. The radially inwardly directed braking surface of the drum ring is then finish-machined on a cylinder of revolution coaxial with the drum back mounting openings so as to provide a brake ring of substantially uniform thickness and weight distribution about the axis of rotation defined by the drum back mounting openings.

SYSTEMS AND METHODS FOR DETERMINING MASS PROPERTIES OF VEHICLE COMPONENTS

A system for measuring a mass property of an object is provided. The system includes a first shaft having a first end and a second end and a table disposed in a first plane and coupled to the first shaft at a predetermined angle to support the object. The table is configured to pivot about an axis perpendicular to the first plane between at least a first pivot position and a second pivot position. The system further includes a torque sensor configured to collect a first torque measurement on the first shaft when the table is in the first pivot position and a second torque measurement on the first shaft when the table in the second pivot position.

RIM REPLACING DEVICE IN TIRE BALANCE MEASURING DEVICE

A lower side coupling of a Hirth coupling is coaxially coupled and fixed to a spindle, an upper side coupling of the Hirth coupling is coaxially coupled and fixed to a lower rim, the upper side coupling of the lower rim is meshed with the lower side coupling of the spindle, and upward separation of the lower rim from the spindle is prevented by chuck mechanisms.

Pulley alignment system

A pulley alignment apparatus including an elongated body having a mounting surface, two elongated legs extending outward from the mounting surface, each of the legs terminating at a tip, a laser supported by the body, wherein the laser is configured to project a planar beam, a power supply for supplying electrical power to the laser, a normally-open switch configured to detect contact between the body and a pulley, wherein the switch electrically couples the laser with the power supply when the contact is detected, and a magnet supported by the body proximate the mounting surface.

タイヤバランス検査装置の校正方法及びタイヤバランス検査装置

Способ определения величины биения гарнитуры ротора дисковой мельницы

Изобретение относится к целлюлозно-бумажной промышленности, а именно к способу определения величины биения гарнитуры ротора дисковой мельницы. Способ включает измерение параметра, которое осуществляют при постоянной мощности двигателя дисковой мельницы, при этом проводят тарировку дисковой мельницы для определения тарировочного коэффициента, в качестве параметра используют амплитуду оборотной частоты огибающей вибрации статора дисковой мельницы, величину биения гарнитуры ротора дисковой мельницы определяют по формуле δ = К⋅Ае, где δ - величина биения гарнитуры ротора, мм; К - тарировочный коэффициент, мм⋅с2/м; Ае - амплитуда оборотной частоты огибающей вибрации статора, м/с2. 1 ил., 1 табл.

СПОСОБ БАЛАНСИРОВКИ РОТОРА И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

FIELD: machine engineering. SUBSTANCE: device for balancing the rotor includes a base, a rotation drive, roller blocks, two anisotropic supports. Each support contains sensors that record the vertical dynamic force acting on the support and sensors that record the vibration movement of the support in the horizontal plane. In this case, the device supports are rigid in the vertical direction, and in the horizontal direction perpendicular to the rotation axis, the device supports are made compliant with the possibility to move. Movable elements are pivotally attached to each support with one end. At the other end, the movable elements are attached to the traverse, a nut is fastened to the traverse, and the screw is installed therein, and on which the roller block is pivoted. The method for balancing the rotor includes placing the rotor on the balancer supports, accelerating thereof to selected rotational speed, recording the rotor oscillations, and determining the imbalance. The imbalance is measured simultaneously both in the pre-resonant and resonant modes. In this case, the dynamic force acting on the support is measured in the vertical direction, and the vibration movement of the support is measured horizontally. EFFECT: increase the accuracy and functionality of the device by providing the possibility to simultaneously measure the imbalance of the product in both the resonant and pre-resonant modes. 6 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 627 968 C1 (51) МПК G01M 1/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2016114337, 14.04.2016 (24) Дата начала отсчета срока действия патента: 14.04.2016 Дата регистрации: (73) Патентообладатель(и): Общество с ограниченной ответственностью "Научно-Технический Центр "Завод Балансировочных Машин" (RU) Приоритет(ы): (22) Дата подачи заявки: 14.04.2016 (45) Опубликовано: 14.08.2017 Бюл. № 23 C 1 2 6 2 7 9 6 8 2544359 C2, 20.03.2015. SU 628587 A1, ...

ИНДЕКСИРУЮЩИЙ ИНСТРУМЕНТ ПРОВЕРКИ БАЛАНСИРОВКИ ДЛЯ ПРОВЕРКИ БАЛАНСИРОВКИ РОТОРА

... 1. Система, содержащая:индексирующий инструмент проверки балансировки для содействия проверке балансировки ротора механизма с использованием устройства проверки балансировки, содержащего механизм привода, при этом указанный индексирующий инструмент проверки балансировки содержит:поверхность держателя ротора, расположенную на роторе; иприемное устройство держателя ротора, выполненное с возможностью установки между механизмом привода устройства проверки балансировки и указанной поверхностью держателя ротора;причем в результате взаимодействия указанной поверхности держателя ротора и указанного приемного устройства держателя ротора обеспечивается индексирующее соединение между механизмом привода и ротором при установке ротора с указанной поверхностью держателя ротора и указанным приемным устройством держателя ротора в устройство проверки балансировки.2. Система по п.1, в которой поверхность держателя ротора сформирована на держателе ротора, выполненном с возможностью неподвижной фиксации с ...

Dynamic balancing of rotor in two planes - deriving compensation vectors from measurement cycle vectors by rotating them through stored correction phase angles obtained during test cycle

In the dynamic balancing method, measurement value vectors are detected as the effects of the rotor imbalance in the measurement planes of a measurement device during a measurement cycle. The measurement vectors are rotated about rotor-specific stored correction phase angles dependent upon defined rotor parameters and determined during test cycles. Compensation vectors for the rotor balance planes are computer derived from the rotated corrected measurement value vectors. Wt. compensation is performed in the balance plane and at angular positions determined according to the compensation vectors. USE/ADVANTAGE - Dynamic balancing of a rotor in two balance planes. Improved plane separation to be achieved.

Carburising briquette for molten steel

A carburising briquette has specific wt. more than 2.6 and is composed of powdered pig iron mixed with carbon powder 10-30 wt.% and binder in suitable amt. The pig iron is prepd. from various kinds of slag produced in iron or steeel making.

Process for measuring unbalance of torque converter and process for correcting such unbalance

Centerless runout and profile inspection

The runout or profile of parts is measured without the need for precision supports by rotating the part generally about an axis of rotation. The changes in position of one or more reference surfaces on the part along first and second tracking axes are measured for a plurality of rotational positions of the part. The change in position of the target surface for which the runout or profile is to be determined is measured along a third tracking axis which lies substantially in a common plane with the first and second tracking axes. The change in position of the rotational axis of the part along the third tracking axis is determined from the changes in position of the one or more reference surfaces and the distances between the tracking axes, and is subtracted from the measured change in position of the target surface along the third tracking axis to determine the runout or profile. Independent measurement devices, which can be aligned to the vertical using a level when the tracking axes are ...

Measurement of axial displacement of a rotating shaft

PROCEDURE AND DEVICE FOR THE OPTIMIZATION OF THE QUIET RUNNING OF A FORCE VEHICLE WHEEL.

DEVICE AND PROCEDURE FOR EXAMINING THE REGULARITY OF BODIES OF REVOLUTION.

MECHANISM FOR IMBALANCE RECOGNITION

Eccentric buildup detection in concrete drums

The present invention provides a method and system for detecting hardened concrete buildup in a mixer drum which is substantially devoid of plastic concrete. An exemplary method involves monitoring the hydraulic pressure required to rotate the drum through at least two successive rotations at constant speed, using a hydraulic pressure sensor on hydraulic charge side, discharge side, or preferably both sides of the hydraulic motor which turns the mixer drum; and detecting when the pressure/time data curve indicates eccentric behavior of the mixer drum, whereby an alarm or other indication is provided to confirm that the hardened concrete buildup in the truck is not acceptable. The buildup detection method and system of the present invention does not require the use of an automated slump monitoring system, but can be implemented in combination with such systems with favorable results a nd advantages.

Pulley alignment system

A pulley alignment apparatus including an elongated body having a mounting surface, two elongated legs extending outward from the mounting surface, each of the legs terminating at a tip, a laser supported by the body, wherein the laser is configured to project a planar beam, a power supply for supplying electrical power to the laser, a normally-open switch configured to detect contact between the body and a pulley, wherein the switch electrically couples the laser with the power supply when the contact is detected, and a magnet supported by the body proximate the mounting surface.

SPEED ESTIMATION SYSTEMS

A method for estimating rotational speed of a system includes receiving vibrational data from a sensor, estimating a speed from the vibrational data to create estimated speed data, and filtering the estimated speed data through an adaptively weighted filter to minimize incorrect speed estimation.

SHAFT BALANCING SYSTEM AND METHOD OF BALANCING A SHAFT

A method and a system of balancing a shaft for an axle assembly. The method may include depositing a powder composition onto the shaft to produce a balance weight proximate an imbalance location. The powder composition may be propelled by a heated supersonic gas and may plastically deform and mechanically interlock to the shaft.

Gear rotation balance degree detection device for mechanical manufacturing system

Fan dynamic balance detection device

Electromagnetic-type automatic balance head actuation stationary degree evaluation method

DYNAMIC BALANCE TESTING DEVICE

The modal impact test assembly, system and method

MACHINE TO BALANCE THE WHEELS OF VEHICLE

METHOD OF DETERMINING THE CORRECTION COMPONENTS OF THE OUT?OF?BALANCE WEIGHT, MAKING ANY ANGLE BETWEEN THEM, ON A DYNAMIC BALANCING MACHINE

PROCESS AND MEASURING DEVICE OF the DYNAMIC IMBALANCE Of a SPHERE

Une sphère (2) est supportée dans un état flottant par un palier pneumatique de façon à être entraînée en rotation par de l'air comprimé pulvérisé par une buse (22). La sphère (2) a un point unique magnétisé sur sa surface, et est placée sur son axe de rotation. Si la sphère (2) présente un déséquilibre dynamique, le point unique est soumis à une précession autour de son axe d'inertie, et l'emplacement et la vitesse de déplacement sont mesurés par des éléments à effet Hall (17, 17a, 17b) disposés suivant un arc autour du palier pneumatique, obtenant ainsi le déséquilibre dynamique de la sphère (2).

Method for balancing rolls, especially for textile materials impregnated with liquid, and device for implementing it

터보차저를 구동하기 위한 장치와 방법

... 터빈 유입구(12)로 공급되는 투입 공기에 의해 터보차저(1)를 구동하기 위한 방법에 있어서, 압축기(15)를 유출하는 압축공기는 터빈(2)의 터빈 보조 유입구(15)속으로 안내되고, 터빈의 피동상태에서 가지는 압력이 상기 터보 압축기(3)에 의해 압축되는 공기의 압력보다 작은 위치에서 상기 터빈 보조 유입구는 상기 터빈 유입구(12)의 하류위치에서 상기 터빈 챔버(5)속으로 개방된다.

TEST DEVICE

A test device is used for testing stability of products. The test device includes a holder, a motor mounted on the holder and a supporting board mounted on the motor. The supporting board includes a supporting surface for supporting the products being tested. The supporting board connects to the motor. The motor drives the supporting board to rotate.

Split station modular balancing and correction machine allowing early removal of workpiece

The invention provides a workpiece balancing and correction apparatus having separate modular stations. A measurement station provides balance measurement and correction auditing functions. A correction station provides material weight correction in one or two planes. A transfer module is designed to transport workpieces between the measurement module and the correction module and maintain the cycle speed of operation of the overall machine in keeping with constant activity at the slowest module.

TACHOMETER SIGNAL JITTER REDUCTION SYSTEM AND METHOD

Assessing and removing jitter from tachometer signals enhances the performance of condition monitoring systems where accurate tachometer signals are needed. A system as disclosed herein can be designed and configured to have a low order of operations, so as to allow for implementation on low cost microcontrollers, which can be important for bused, distributed monitoring systems in which the tachometer zero crossing data is collected at a tachometer sensor and then broadcast to other remote sensors needing that information for vibration or other advanced analysis. Moreover, for monolithic architecture systems (e.g., a centralized processing and control architecture), the low order of operation and small software code base allows the system to be a simple/low cost addition to existing monitoring systems. 1. A method of reducing jitter comprising the steps of:producing a signal representative of a speed of rotation of a monitored component;sending the signal to a controller;determining an effect of jitter on the signal; andreducing the effect of jitter on the signal using a filter.2. The method of reducing jitter of wherein the step of determining the effect is performed using a tachometer signal zero crossing time.3. The method of reducing jitter of wherein the step of reducing the effect of jitter uses an infinite impulse response filter.4. The method of reducing jitter of wherein the step of reducing the effect of jitter includes running the filter so as to be a zero phase filter.5. The method of reducing jitter of further including the step of identifying variations on the signal unrelated to jitter.6. A system of reducing jitter comprising:a sensor that produces a signal representative of a speed of rotation of a component; anda controller that receives the signal from the sensor, wherein the controller determines an effect of jitter on the signal and reduces the effect of jitter on the signal using a filter.7. A system according to claim 6 , wherein the ...

Drehtrommelausrichtungsüberprüfungsvorrichtung

Um die Anordnung einer Drehtrommel relativ zu der Wellenachse einer Spindelbaugruppe zu überprüfen, hat eine Ausrichtungsüberprüfungsvorrichtung gemäß der vorliegenden Erfindung einen Körperabschnitt, der an einer Montagefläche montierbar gestaltet ist, die horizontal an der Spindelbaugruppe ausgebildet ist, wobei der Körperabschnitt eine Führungsfläche in der Richtung hat, die unter rechtem Winkel zu der Montagefläche ist; einen linearen Führungsabschnitt, der in einer nach oben und nach unten weisenden Richtung einer Führungsfläche montiert ist; eine Gleiteinrichtung, die über ein Rollelement an dem linearen Führungsabschnitt montiert ist, wobei die Gleiteinrichtung in einer Richtung bewegbar gestaltet ist, in der der lineare Führungsabschnitt eingebaut ist; ein Armelement, dessen proximaler Endabschnitt an der Gleiteinrichtung befestigt ist und dessen distaler Endabschnitt sich zu der Drehtrommel erstreckt; und eine Messuhr, die an dem distalen Endabschnitt des Armelements montiert ist ...

Anordnung zur Steuerung und Beendigung des Unwuchtausgleichvorganges

Rotor unbalance correction

Apparatus for testing turbochargers

Apparatus 1 for testing turbochargers includes a balance test module 2 for measuring rotational imbalance of a turbocharger core assembly 3, a flow setting module 4 for measuring and calibrating airflow through a variable geometry turbocharger 5 and a control unit 6 for controlling the apparatus and storing measurement data. The control unit is configured to receive a first measurement data set from the balance test module and a second measurement data set from the flow setting module and to store the data sets on a memory of the control unit. Also provided is a method of repairing or reconditioning a turbocharger comprising: disassembling a variable geometry turbocharger on the work surface of an integrated balance test and flow setting apparatus, testing rotational imbalance of the turbocharger core assembly using the balance test module of the apparatus, grinding material from the core assembly if a rotational imbalance is found, reassembling the turbocharger with the tested core assembly ...

Apparatus for supporting a rotor

MACHINE FOR AUTOMATICALLY BALANCING ROTARY WORKPIECES

... 1434256 Balancing; drilling; milling REGIE NATIONALE DES USINES RENAULT 2 Nov 1973 [3 Nov 1972] 51117/73 Headings B3B B3C and B3K An automatic machine for balancing crankshafts or other rotary workpieces comprises a measuring station 1 and machining stations 2, 3 disposed on a common circle, and a central rotary unit having a vertical rotary axis disposed at the centre of the circle for simultaneously transferring all the workpieces from one station to another. As shown, three crankshafts can be operated on simultaneously, raised and indexed around through 120 degrees to the next station, the transfer unit (6) Fig. 2 (not shown) including arms 7 provided with forked ends for carrying the crankshafts by its two intermediate journals. Drilling or milling units 9 at the first machining station 2 operate on the endmost balance weights while similar units operate on the central balance weights. Each machining unit 9 operates twice on the balance weight, the second operation being performed after ...

UNBALANCE CORRECTION

... 1325918 Correcting rotor unbalance W & T AVERY Ltd 22 Dec 1970 [27 Dec 1969] 60751/70 Heading G1N Apparatus for measuring the magnitude of the unbalance correction effected by a drill 2 Fig. 1 on a rotor 1 which is correctly angularly positioned on supports 14, 15 in accordance with previously made unbalance measurements, comprises a potentiometer 8 whose slides 7 coupled to the drill 2 to produce a signal representing the material removed by the drill, for comparison with the previously measured unbalance signal stored at 19. Potentiometer 8 and parallel rheostats 12, 16 are fed with a constant current I and the potential at junction 13 is a non-linear function of the drill displacement similar to the relationship between material removed and depth of hole for the drill 2. The signals are compared in a differential amplifier 18 to stop the drilling when the signals are equal. The current I may be adjusted in accordance with the diameter of the drill and/or the density of the rotor material ...

APPARATUS AND METHOD FOR MEASURING OF ELECTRIC MACHINES

Die Vorrichtung zur Vermessung einer elektrischen Maschine umfasst ein Unterteil (1) mit Auflageelementen (3) zur Auflage einer Basisplatte (10) der elektrischen Maschine, ein Oberteil (2) mit Auflageelementen (4) zur Auflage auf der Basisplatte (10) der elektrischen Maschine und mindestens einen elektrischen Kontaktstift (5) zur elektrischen Kontaktierung einer Kontaktfläche (50) an einer Seite der Basisplatte (10) der elektrischen Maschine, wobei der elektrische Kontaktstift (5) mit einer vorgegebenen Andruckkraft (F) an der Kontaktfläche anliegt. Es ist mindestens ein Abstandssensor (7) zur Erfassung eines Abstandswertes zwischen dem Abstandssensor (7) und einer Oberfläche des Rotorbauteils (12) der elektrischen Maschine vorgesehen. Erfindungsgemäß umfasst die Vorrichtung einen Druckstift (6), der an der dem elektrischen Kontaktstift (5) gegenüberliegenden Seite der Basisplatte (10) mit einer vorgegebenen Andruckkraft (F') anliegt, die etwa der Andruckkraft (F) des Kontaktstifts (5) ...

APPARATUS AND METHOD FOR MEASURING OF ELECTRIC MACHINES

Die Vorrichtung zur Vermessung einer elektrischen Maschine umfasst ein Unterteil (1) mit Auflageelementen (3) zur Auflage einer Basisplatte (10) der elektrischen Maschine, ein Oberteil (2) mit Auflageelementen (4) zur Auflage auf der Basisplatte (10) der elektrischen Maschine und mindestens einen elektrischen Kontaktstift (5) zur elektrischen Kontaktierung einer Kontaktfläche (50) an einer Seite der Basisplatte (10) der elektrischen Maschine, wobei der elektrische Kontaktstift (5) mit einer vorgegebenen Andruckkraft (F) an der Kontaktfläche anliegt. Es ist mindestens ein Abstandssensor (7) zur Erfassung eines Abstandswertes zwischen dem Abstandssensor (7) und einer Oberfläche des Rotorbauteils (12) der elektrischen Maschine vorgesehen. Erfindungsgemäß umfasst die Vorrichtung einen Druckstift (6), der an der dem elektrischen Kontaktstift (5) gegenüberliegenden Seite der Basisplatte (10) mit einer vorgegebenen Andruckkraft (F') anliegt, die etwa der Andruckkraft (F) des Kontaktstifts (5) ...

Verfahren zur Bestimmung der spektralen Leistungsdichte des nicht wiederholbaren Schlages eines fluiddynamischen Lagersystems

Die Erfindung betrifft ein Verfahren zur Bestimmung der spektralen Leistungsdichte des nicht wiederholbaren Schlages NRRO eines fluiddynamischen Lagersystems. Erfindungsgemäß wird zur Bestimmung der spektralen Leistungsdichte ein Multitaper-Verfahren verwendet.

APPARATUS TO DETERMINE THE IMBALANCE IN A ROTATING OBJECT

METHOD OF DIAGNOSING TIRE AND WHEEL PROBLEMS

Balance test indexing tool for balance-testing a rotor

A balance test indexing tool for use in a balance testing machine to assist a user in testing unbalance in a rotor. The tool includes a rotor mount face disposed on the rotor being tested. The rotor mount face may be machined in a surface of the rotor or provided in a separate rotor mount temporarily fixed to the rotor. The tool also includes a rotor mount receiver configured to receive the rotor mount face in the balance testing machine. The rotor mount face and rotor mount receiver are configured to provide an indexing coupling that allows the rotor to be readily indexed to any of a plurality of index positions for unbalance testing in the testing machine. The tool allows multiple balancing runs to be made with relatively little effort needed to re-index the rotor. In some embodiments the tool includes a kinematic coupling that provides highly accurate and repeatable indexing.

Pulley alignment system

A pulley alignment apparatus including an elongated body having a mounting surface, two elongated legs extending outward from the mounting surface, each of the legs terminating at a tip, a laser supported by the body, wherein the laser is configured to project a planar beam, a power supply for supplying electrical power to the laser, a normally-open switch configured to detect contact between the body and a pulley, wherein the switch electrically couples the laser with the power supply when the contact is detected, and a magnet supported by the body proximate the mounting surface.

Motor fan blade dynamic balancing device is detected in batches

Automatic balance machine and balance block production and assembly mechanism and dynamic balance compensation method thereof

Automobile transmission equivalent unbalance test method

Method for correcting the imbalance of the rotating body does not balance correction calculating means and

DEVICE FOR the DETECTION Of an OIL UNBALANCE IN a ROTOR, ROTORCOMPORTANT SUCH a DEVICE, AND MACHINE EQUIPEE Of SUCH a ROTOR

BLADE OF ROTOR Of HELICOPTER WITH COMPENSATOR IN the SHAPE OF CORNER TO ELIMINATE the DYNAMIC INEQUALITY FROM the MOMENT FOR the CHANGE OF the BLADE PITCH AND PROCESS FOR the APPLICATION OF the COMPENSATOR

DYNAMIC UNBALANCE CALCULATING METHOD AND DYNAMIC UNBALANCE TESTING DEVICE

The magnitude and angular position of dynamic unbalance of a rotary body are calculated from the original vibration vector. The original vibration vector (magnitude and angular position) obtained by measurement using a vibration sensor in bearings supporting the rotary body has its specific unbalance calculated from the dynamic unbalance vector (magnitude, angular position) of the rotary body obtained by a vector calculation method on the basis of the ratio of the spacing between the bearings to the spacing between two corrected surfaces optionally set on the rotary body.

Device for retaining a tool in either a stationary or movable position

A device for retaining a workpiece in either a stationary or movable position for use in a machine which incorporates an off-balance indicator such as a strobe light and which is used to remove imbalance. The device selectively holds the tool in a first fixed stationary position for performing work operations thereon or releases the tool to allow it to oscillate so as to enable balancing operations to be carried out.

Static and dynamic wheel balance tester

DYNAMIC BALANCER WITH A FRAMELESS MOTOR DRIVE

A dynamic balancer includes an outer housing and a spindle assembly rotatably mounted to the outer housing. A frameless motor assembly is connected to selected components of the spindle assembly. A chucking assembly receives a locking member to capture a tire therebetween. The chucking assembly and the locking member are captured in the spindle assembly and rotated by the frameless motor assembly. A spring-biased return cylinder may be used with the dynamic balancer to assist in capturing and releasing the locking member with respect to the chucking assembly. An adjustable encoder assembly may be associated with the motor assembly to monitor a rotational position of the tire and/or spindle assembly.

BALANCING MACHINE WITH AUTOMATIC INDEX MEASURING

BALANCING MACHINE

METHOD AND SYSTEM FOR DETERMINING CORRECTION VALUE

PURPOSE: To perform balance test of rotators simultaneously at a cost as low as possible by comparing an imbalance measured for at least one reference plane with an allowable residual imbalance for that reference plane. CONSTITUTION: A decision is made whether correction of imbalance is required using a comparator 10 for comparing an imbalance detected by an analyzer 1 with an allowable residual imbalance and an imbalance signal is delivered to signal processing, circuits 2-5 if correction is required. The processing circuits 2-5 determine a correction value coming within an allowable range determined by the allowable residual imbalance or equivalent to a residual imbalance matching the upper limit thereof for at least one correction face. A plurality of possible correction values are stored in a memory 6 and one correction value is selected by a selector 7 based on a preset reference. COPYRIGHT: (C)1989,JPO ...

Устройство для балансировки ротора

Изобретение относится к балансировочной технике и может быть использовано для определения параметров дисбаланса ротора в динамическом режиме. В качестве рабочего движения в устройстве для балансировки ротора применяется не вращательное, а сферическое циркуляционное движение. Применение сферического циркуляционного движения вместо вращения ведет к снижению времени определения величины неуравновешенности, к снижению энергетических затрат, к появлению возможности безопасной балансировки легкоразрушающихся роторов, к упрощению балансировки несплошных роторов, таких как винты, пропеллеры и др. Задачей, на решение которой направлено заявляемое изобретение, является повышение точности определения дисбаланса с одновременным снижением сложности конструкции балансировочного устройства. Данная задача решается за счет того, что в аналоге измерения величины и фазы полезного сигнала от неуравновешенности проводятся в относительной подвижной системе отсчета, а в предлагаемом балансировочном устройстве ...

Лабораторная установка для изучения динамической балансировки

Полезная модель относится к научным приборам по механике и предназначена для экспериментального изучения процесса динамической балансировки в высших учебных заведениях. Техническим результатом, достигаемым полезной моделью, является повышение точности проведения динамической балансировки за счет оптимизации процесса подготовки к измерению. Установка (фиг. 1) состоит из балансируемого барабана 1, установленного в подшипниках 2, закрепленных на маятниковой раме 11, которая вместе пружиной 13 образует колебательную систему. На пружине 13 наклеены тензорезисторы 14, измеряющие ее деформацию. Сигнал с тензорезисторов через аналогово-цифровой преобразователь поступает в микроконтроллер, где преобразуется в значение амплитуды колебаний рамы. На дисплей выводится максимальное значение амплитуды в миллиметрах. Установка работает следующим образом. После разгона ротора до оборотов, при которых частота возмущающей силы больше частоты собственных колебаний рамы с пружиной, ему дают свободно вращаться ...

Balancing and measuring balancing wts. for elastic rotors on force measurement balancing machines - involves measuring imbalance parameters for different rotor revolution rates and deriving balance wts. in the balancing planes

A method of balancing and measuring the balancing wts. of elastic rotors on force measurement balancing machines involves measuring imbalance parameters for different rotor revolution rates and deriving balance wts. in the balancing planes (3, 16, 17). At least one imbalance parameter is first measured for a defined rotor speed at which the rotor has rigid body properties. At least one further imbalance parameter and value to be balanced are measured per bearing plane (5) for a given rotor speed in the region of a characteristic speed. The balance wts. required to compensate for the rigid body imbalance and characteristic shape components are derived from the derived imbalance parameter and rotor and bearing data. USE/ADVANTAGE - method enables both rigid body and modal imbalance of elastic rotor to be compensated without use of test wt. procedure.

Balancing coupled rotors with numerical eccentricity measurement - using balance wt. calculation and positioning from prod. of eccentricity and empirical sum of rotating masses

The output shaft (14) of a variable-speed gearbox (12) and a cardan shaft (18) are coupled together by screws (24) through a flange (22) and a joint (20) on the respective rotating parts. The cardan shaft (18) is separately balanced with a counterweight (26) and residual unbalance of e.g. 15 mmg marked (28) at a diametrically opposed point. The eccentricity (e1) and/or out-of-plane error (e2) at the flange (22) are measured and marked (30). The balance wt. (A) and its effective radius (r) are calculated. ADVANTAGE - For gas turbine or vehicle engine. Negligible overall unbalance is achieved at low cost without balancing entire unit.

Verfahren und Vorrichtung zum Auswuchten

Die Erfindung betrifft ein Verfahren zum Auswuchten eines Werkstückes (10), bei dem- das Werkstück (10) um eine Drehachse (11) gedreht wird,- die Kräfte und/oder Momente gemessen werden, die auf Grund einer Unwucht des Werkstücks (10) beim Drehen des Werkstücks entstehen, und- Material des Werkstücks (10) zur Verringerung der Unwucht abgetragen wird.Die Erfindung zeichnet sich dadurch aus, dass das Material während des Messens vom drehenden Werkstück (10) abgetragen wird oder das Werkstück (10) zwischen dem Messen und Abtragen kontinuierlich gedreht wird.

Apparatus for supporting a rotor

A support device 110 for supporting a rotor (142, Figure 9)during a balance process allows it to rotate about an axis, wherein a carriage member 200 extends around and under a portion (144, Figure 10) of the rotor periphery, said carriage member supporting first and second rotatable members 220, each of which engages and supports the rotor, wherein the rotatable members can move towards and away from each other and towards and away from the rotor axis. Alternatively, the apparatus includes a sensing device supported by the carriage member for determining the unbalance in a rotor in a plane coincident with a plane in which the rotatable members lie. Alternatively, the support device includes a main body (313, Figure 11) and a connecting device 230 which supports the carriage member in a cantilevered configuration including one or more connecting members. The carriage member may be flexible and arcuate and may extend around up to 180 degrees of the rotor periphery. It may support third and ...

Method and system for determining non-uniformity characteristics of a vehicle tire and rim

A method and system for a wheel assembly service system are provided. The system includes a rotatable spindle configured to receive a wheel assembly wherein the wheel assembly includes at least a rim and a tire. The system further includes a load device configured to apply a load to the tire during a rotation of the wheel assembly on the spindle, and a controller configured to determine a first force variation vector of the wheel assembly, prompt a user to rotate the tire with respect to the rim, determine a second force variation vector of the wheel assembly with the tire rotated with respect to the rim, and determine a force variation of at least one of the tire and the wheel using the first and second force variation vectors. The system also outputs at least one of the determined force variation vector values.

ROTOR BALANCING METHOD

A method of balancing a physical rotor includes: determining a first balance state of the physical rotor at one or more rotational frequencies; identifying one or more balance zones on a surface of the rotor; providing a computerised simulation of the rotor having the first balance state; providing a first test mass in a first test location within one of the balance zones on the rotor simulation; determining a second balance state of the rotor simulation; providing at least one subsequent test mass in at least one subsequent test location within a balance zone on the rotor simulation and determining at least one subsequent balance state of the rotor simulation; selecting a mass and location from one of the first and subsequent test masses and test locations; and performing a material deposition process to add the selected mass of material to the selected location on the physical rotor. 1. A method of balancing a physical rotor , the method comprising the steps of:determining a first balance state of the physical rotor;identifying one or more balance zones on a surface of the rotor;providing a computerised simulation of the rotor having the first balance state;providing a first test mass in a first test location within one of the balance zones on the rotor simulation;determining a second balance state of the rotor simulation;providing at least one subsequent test mass in at least one subsequent test location within a balance zone on the rotor simulation and determining at least one subsequent balance state of the rotor simulation;selecting a mass and location from one of the first and subsequent test masses and test locations which provides a predetermined balance state; andperforming a material deposition process to add the selected mass of material to the selected location on the physical rotor.2. A method according to claim 1 , wherein the selected mass and location comprises the test mass and test location having a minimal balance mass which provides the ...

TIRE BALANCE MEASURING DEVICE

The present invention provides a tire balance measuring device capable of minimizing the influence exerted on a measured value due to an inclination of a lock shaft even when the lock shaft (fitted shaft) is inclined in a random direction at an angle created by a gap corresponding to a fitting allowance every time a tire is supplied with gas. The tire balance measuring device of this invention comprises a sensor for measuring the inclination of the lock shaft, and a computing unit for computing an amount of change in a unbalance of the tire from an output value received from the sensor after the tire is supplied with gas, and correcting a result of measuring a balance of the tire using the computed amount of change in the unbalance. 1. A tire balance measuring device , comprising:a rim rotation supporting shaft vertically and rotatably supported via a bearing by a housing;a lower rim mounted on the rim rotation supporting shaft;a locking shaft inserted into a fitting hole in the rim rotation supporting shaft;an upper rim mounted on the locking shaft and arranged above the lower rim;a locking component for causing the locking shaft to be engaged at a desired height with the rim rotation supporting shaft and fixed thereto;at least two sensors for measuring an inclination of the locking shaft, anda correction computing unit for computing an amount of change in an unbalance of a tire based on an output value received from the sensors after the tire is supplied with gas, and correcting a result of measuring a balance of the tire using the computed amount of change in the unbalance.2. The tire balance measuring device according to claim 1 , wherein the correction computing unit computes an amount by which the inclination of the locking shaft is changed from a reference inclination of the locking shaft and an amount by which eccentricity in a position of center of gravity of the locking shaft equipped with the upper rim is changed from that of the locking shaft having the ...

Rotor Balance Weight System

A rotor has a rotor body having: a flange with a circumferential array of discontiguous apertures; and a surface spaced apart from the flange. One or more rotor balance weight assemblies each have a weight and a fastener. The weight has: a passageway having a first end and a second end; an internal thread along the passageway; and a boss at the first end of the passageway. The boss is in a respective one of the apertures. The fastener has: a shank having a first end and a second end and an external thread engaged to the passageway internal thread; an engagement feature at the shank first end for engagement by a tool to turn the fastener; and a head at the second end contacts the surface. 119.-. (canceled)20. A rotor body having:an axis;a flange with a circumferential array of apertures; anda surface spaced radially apart from the flange and having a plurality of recesses, each aligned with a respective associated one of the apertures.21. The rotor body of further comprising:a radial flange, the axial flange extending from a junction with the radial flange.22. The rotor body of further comprising:a shaft portion of the rotor body, the radial flange extending radially outward from the shaft portion.23. The rotor body of wherein:the circumferential array of apertures is 8-100 apertures.24. The rotor body of wherein:the circumferential array of apertures is 12-36 apertures.25. The rotor body of wherein:each said recess is blind.26. The rotor body of wherein:each said recess is doubly concave27. The rotor body of wherein:the circumferential array of apertures is 8-100 apertures.28. The rotor body of wherein:the circumferential array of apertures is 12-36 apertures.29. The rotor body of wherein:each said recess is blind.30. The rotor body of wherein:each said recess is doubly concave31. A rotor including the rotor body of and further comprising:a plurality of stages of blades. This is a continuation of U.S. patent application Ser. No. 15/841,882, filed Dec. 14, 2017, and ...

DYNAMIC BALANCE TESTING DEVICE

A dynamic balance testing device includes a plurality of support rollers having respective rotation axes extending in a predetermined direction, the plurality of support rollers being configured to support a specimen in internal contact with an inner periphery of the specimen in such a manner that the specimen is rotatable about a central axis of the inner periphery, the plurality of support rollers including, a first support roller having a first rotation axis that is parallel to the central axis of the inner periphery of the specimen, and a second support roller having a second rotation axis that is parallel to the central axis of the inner periphery of the specimen and is positionally different from the first rotation axis of the first support roller. 1. A dynamic balance testing device , comprising: a first support roller having a first rotation axis that is parallel to the central axis of the inner periphery of the specimen; and', 'a second support roller having a second rotation axis that is parallel to the central axis of the inner periphery of the specimen and is positionally different from the first rotation axis of the first support roller., 'a plurality of support rollers having respective rotation axes extending in a predetermined direction, the plurality of support rollers being configured to support a specimen in internal contact with an inner periphery of the specimen in such a manner that the specimen is rotatable about a central axis of the inner periphery, the plurality of support rollers including2. The dynamic balance testing device according to claim 1 ,wherein a distance between farthest positions on the first and second support rollers from each other in a direction perpendicular to the predetermined direction is narrower than a diameter of the inner periphery.3. The dynamic balance testing device according to claim 1 ,wherein the first support roller and the second support roller have an identical diameter and are disposed at an identical ...

Balancing Device, Uniformity Device and Methods for Utilizing the Same

A balancing device, a uniformity device and an apparatus including the balancing device and the uniformity device are disclosed. Each of the balancing device and the uniformity device includes at least one multi-axis transducer. Methods are also disclosed. 1. An apparatus , comprising:a balancing device that determines imbalance of a workpiece, wherein the balancing device includes: a lower workpiece-engaging portion; anda computing resource communicatively-coupled to the lower workpiece-engaging portion by one or more communication conduits,wherein the lower workpiece-engaging portion includes a central shaft having a proximal end and a distal end and an elongated body that extends between the proximal end and the distal end, wherein the lower workpiece-engaging portion includes a motor, wherein the proximal end of the central shaft is connected to the motor, wherein the lower workpiece-engaging portion includes a radially manipulatable workpiece-engaging chuck that is connected to the distal end of the central shaft, wherein the lower workpiece-engaging portion includes at least one multi-axis transducer.2. The apparatus according to claim 1 , wherein information relating to imbalance of the workpiece is provided by the at least one multi-axis transducer and is over-deterministically calculated in terms of at least one group of signals associated with respective axes of at least two axes that are produced by the at least one multi-axis transducer claim 1 , wherein the at least one group of signals include:a group of two or more torque-moment signals with each torque-moment signal associated with a respective axis of the at least two axes, ora group of two or more force signals with each force signal associated with a respective axis of the at least two axes, wherein all axes of the at least two axes share the same origin and are orthogonal to one another.3. The apparatus according to claim 2 , wherein each signal of the at least one group of signals is ...

TIRE GRINDING DEVICE AND TIRE TESTING SYSTEM

A tire grinding device grinds a surface of a tire, and the tire grinding device includes: a grindstone holding portion which holds a grindstone which grinds the surface of the tire; a cover which is disposed with a gap with respect to the surface of the tire, and covers the grindstone held by the grindstone holding portion; and an air layer forming portion which forms an air layer which prevents ground chips of the ground tire from being discharged through the gap formed between an edge of the cover and the surface of the tire. 1. A tire grinding device which grinds a surface of a tire , comprising:a grindstone holding portion which holds a grindstone which grinds the surface of the tire;a cover which is disposed with a gap with respect to the surface of the tire, and covers the grindstone held by the grindstone holding portion; andan air layer forming portion which forms an air layer which prevents ground chips of the ground tire from being discharged through the gap formed between an edge of the cover and the surface of the tire.2. The tire grinding device according to claim 1 ,wherein the air layer forming portion injects air toward the gap.3. The tire grinding device according to claim 2 ,wherein the air layer forming portion injects the air toward the gap so that the air is gradually directed to the grindstone side toward the tire.4. The tire grinding device according to claim 2 ,wherein the air layer forming portion is provided so as to inject the air to at least a front side gap in a grinding direction in the gap.5. The tire grinding device according to claim 2 ,wherein the air layer forming portion injects the air toward the gap from the outside of the cover.6. The tire grinding device according to claim 1 ,wherein the grindstone holding portion holds the grindstone so as to grind a shoulder portion of the tire.7. The tire grinding device according to claim 1 , further comprising:a static electricity removing portion which removes static electricity on the ...

DYNAMIC BALANCE TESTING DEVICE

A dynamic balance testing device includes a vibrating unit configured to rotatably hold a predetermined rotating body being a specimen, a first spring configured to elastically support the vibrating unit and restrict displacement of the vibrating unit in a direction parallel to a rotation axis of the predetermined rotating body, and at least three second springs configured to elastically support the vibrating unit and restrict displacement of the vibrating unit in a predetermined direction orthogonal to the rotation axis. The at least three second springs are attached to the vibrating unit on a same predetermined plane, and the vibrating unit holds the predetermined rotating body such that a projection of a center of gravity of the predetermined rotating body onto the predetermined plane is substantially at the same position as a position where the first spring is attached to the vibrating unit. 1. A dynamic balance testing device comprisinga bearing unit configured to form an air bearing that rotatably holds a rotating body being a specimen, a bearing housing; and', 'a thrust bearing member detachably fixed to the bearing housing,, 'wherein the bearing unit haswherein the thrust bearing member is a plate-like member having an opening for inserting an axis body and forms a thrust air bearing between the rotating body and the thrust bearing member.2. The dynamic balance testing device according to claim 1 ,wherein the thrust bearing member is formed in a flat plate shape.3. The dynamic balance testing device according to claim 1 ,wherein the bearing unit has a positioning fixing member configured to position the thrust bearing member and detachably fix the thrust bearing member to the bearing housing.4. The dynamic balance testing device according to claim 3 , a positioning member configured to position the thrust bearing member; and', 'a fixing member configured to detachably fix the positioning member to the bearing housing., 'wherein the positioning fixing member ...

MEASURING UNIT AND MEASURING ASSEMBLY FOR MEASURING UNBALANCE FORCES

The present invention relates to measuring unit for measuring forces generated by unbalance of rotor mounted on measuring shaft, particularly of vehicle wheel mounted on measuring shaft of wheel balancing machine, the measuring unit comprising stationary frame, first bearing for receiving measuring shaft rotatably about its shaft axis (Z), second bearing pivotally supporting first bearing about pivot axis (Y) which intersects shaft axis (Z) and being supported on stationary frame, first force sensor for measuring forces generated by unbalance of rotating rotor and acting on measuring shaft about pivot axis (Y), and second force sensor for measuring forces generated by unbalance of rotating rotor and acting on measuring shaft and on second bearing in direction intersecting shaft axis (Z), wherein second bearing and stationary frame are integrally formed of single element as support plate. 2. The measuring unit according to claim 1 , wherein a detection axis of the second force sensor is arranged substantially perpendicular to both the pivot axis (Y) and the shaft axis (Z).3. The measuring unit according to claim 1 , wherein a detection axis of the first force sensor is arranged substantially parallel to the shaft axis (Z).4. The measuring unit according to claim 1 , comprising at least one first spring claim 1 , preferably at least one torsion spring claim 1 , for pivotally supporting the first bearing within the second bearing about the pivot axis (Y).5. The measuring unit according to claim 4 , wherein the support plate comprises the at least one first spring as an integral part thereof.6. The measuring unit according to claim 1 , comprising at least one second spring claim 1 , preferably at least one plate spring claim 1 , for supporting the second bearing within the stationary frame.7. The measuring unit according to claim 6 , wherein the at least one second spring is configured such that the second bearing is translational moveable with respect to the stationary ...

DEVICE FOR ALIGNING A WORKPIECE IN A MASS-CENTRING DEVICE

Disclosed is a device for aligning a workpiece in a mass-centring device, in which in an initial position an upper flange () and a lower flange () are arranged concentrically around an axis () of a balancing spindle of the mass-centring device, with the upper flange () comprising an interface () for clamping means to clamp the workpiece, and the lower flange () an interface () for fastening means to fasten the device to the balancing spindle. At least two spring elements () reside between the upper and the lower flange (), such that in the initial position the upper flange () takes support axially and radially exclusively on the two spring elements (). In the initial position, the upper flange () is movable relative to the lower flange () into an eccentric position by a force acting in opposition to the spring elements (). A displacement device comprising a compression spring () and a piston () is arranged between the upper and the lower flange () such that in a clamping position the piston () is movable, by the force of the compression spring (), into engagement with a supporting element () of a fastening element () of the upper flange (), so that the piston () enables the upper flange () to be clamped against the lower flange () and to be arrested in the eccentric position. 1123142522231212223122223913121312. A device for aligning a workpiece in a mass-centring device , with an upper and a lower flange ( , ) arranged in an initial position concentrically around an axis () of a balancing spindle of the mass-centring device , with the upper flange () comprising an interface () for clamping means to clamp the workpiece , and the lower flange () an interface () for fastening means to fasten the device to the balancing spindle , wherein at least two spring elements ( , ) reside between the upper and the lower flange ( , ) , such that in the initial position the upper flange () takes support axially and radially exclusively on the two spring elements ( , ) and that in ...

Weight Material Dispensing, Cutting and Applying System

An apparatus for balancing a wheel includes a tool and an arm control module. The tool is mechanically coupled to an arm and includes a leading edge, a trailing edge, and a face surface that forms an arc between the leading and trailing edges. The arm control module actuates the arm to position the leading edge of the tool a predetermined distance from an edge of a deck of a cutting apparatus to receive a piece of non-segmented wheel weight material. A blade of a cutting apparatus passes between the edge of the deck and the leading edge of the tool to cut the piece from the non-segmented wheel weight material. 1. An apparatus for balancing a wheel , the apparatus comprising:a tool that is mechanically coupled to an arm and that includes a leading edge, a trailing edge, and a face surface that forms an arc between the leading and trailing edges;an arm control module that actuates the arm to position the leading edge of the tool a predetermined distance from an edge of a deck of a cutting apparatus to receive a wheel weight, wherein the cutting apparatus separates the wheel weight from a supply feed of wheel weight material; anda sensor that detects presence or absence of the wheel weight on the tool.2. The apparatus of claim 1 , wherein the sensor detects the presence or absence of the wheel weight on the face surface of the tool within a second predetermined distance of the leading edge of the tool.3. The apparatus of claim 1 , wherein the sensor is located adjacent to the leading edge of the tool.4. The apparatus of claim 1 , wherein the face surface of the tool includes an aperture claim 1 , and wherein the sensor is located within the aperture.5. The apparatus of claim 1 , further comprising a second sensor that detects presence or absence of the wheel weight on the tool.6. The apparatus of claim 1 , wherein the arm control module selectively performs error handling in response to the sensor detecting that the wheel weight is absent from the tool.7. The apparatus ...

ALUMINUM ALLOY HUB POSITIONING FIXTURE

The invention provides an aluminum alloy hub positioning fixture. The aluminum alloy hub positioning fixture adopts an upper trapezoidal metal taper sleeve and a lower trapezoidal metal taper sleeve, the lower trapezoidal metal taper sleeve is in contact with the central hole of a hub, and the upper trapezoidal metal taper sleeve is in contact with the cap section of the hub; the lower trapezoidal metal taper sleeve is mounted on a hollow shaft, and a metal pipe is arranged in the middle of the hollow shaft. During working, the hub is positioned and mounted on the lower trapezoidal metal taper sleeve via the central hole, the upper trapezoidal metal taper sleeve is in vertical contact with the cap section of the hub under the action of a cylinder. 1. An aluminum alloy hub positioning fixture , comprising a vacuum extraction system , a vacuum gauge , electromagnetic valves , a compressed air system , a pressure gauge , a metal hose , a belt pulley , a metal pipe , an upper rotating shaft , an upper cylinder , a lower cylinder , a servo , a bearing seat , a belt , a lower rotating shaft , rubber sheaths , a trapezoidal taper sleeve A , a trapezoidal taper sleeve B and a bearing seat.2. The aluminum alloy hub positioning fixture of claim 1 , the rubber sheaths are mounted on the surfaces of both the trapezoidal taper sleeve A and the trapezoidal taper sleeve B.3. The aluminum alloy hub positioning fixture of claim 1 , the trapezoidal taper sleeve A and the trapezoidal taper sleeve B are in a metal step shape with each layer having a taper claim 1 , and are configured to be applied to hubs having different central hole sizes.4. The aluminum alloy hub positioning fixture of claim 1 , when the vacuum extraction system extracts vacuum claim 1 , the vacuum degree is 3-5 Pa.5. The aluminum alloy hub positioning fixture of claim 1 , when the compressed air system charges air claim 1 , the air charging pressure is 0.3-0.6 MPa.6. The aluminum alloy hub positioning fixture of ...

SYSTEM AND METHOD FOR DYNAMIC BALANCING OF A ROTATING BODY

A system dynamically balances a rotating body. The system includes a support that holds the body as it rotates. At least one sensor generates signals indicative of a balance of the body as it rotates and a controller identifies a position on the body where material can be placed to balance the body. The controller operates at least one actuator to move a plurality of ejectors opposite the identified position where the controller operates at least one ejector in the plurality of ejectors to eject material onto the identified position. The system can operate iteratively until the body is balanced within a predetermined range. 1. A system for dynamically balancing a body comprising:an actuator operatively connected to the body, the actuator being configured to rotate the body;at least one sensor configured to generate signals indicative of a balance of the body as the actuator rotates the body;a plurality of ejectors configured to eject drops of at least one material;at least one further actuator operatively connected to the plurality of ejectors, the at least one further actuator being configured to move the plurality of ejectors to a plurality of positions opposite the rotating body; anda controller operatively connected to the actuator, the sensor, the plurality of ejectors, and the at least one further actuator, the controller being configured to operate the actuator to rotate the body, to identify with reference to the signals from the sensor a position on the body where material ejected onto the body balances the body, to operate the at least one further actuator to move at least one ejector in the plurality of ejectors to the identified position, and to send signals to the at least one ejector to eject material onto the identified position on the body to balance the body.2. The system of claim 1 , the at least one further actuator being further configured to:move the plurality of ejectors along the longitudinal axis of the body as the actuator rotates the body.3 ...

Systems and Methods for Detecting an Imbalanced Load in a Washing Machine Appliance Having a Balancing Apparatus

An exemplary washing machine appliance includes a cabinet, a tub positioned within the cabinet, a drum rotatably mounted within the tub, a balancing apparatus configured to offset an imbalance created by articles in the drum, and a motor in mechanical communication with the drum. The motor is configured for selectively rotating the drum within the tub. The washing machine appliance includes a controller configured to perform operations. The operations include receiving a signal indicative of a speed of the motor. The operations include determining a deviation of the speed of the motor from a target motor speed and comparing the deviation to one or more threshold values. The operations include determining whether to perform a rebalancing process or a spin out process based on the comparison of the deviation to the one or more threshold values. 1. A washing machine appliance , comprising:a cabinet;a tub positioned within the cabinet;a drum rotatably mounted within the tub, the drum defining a wash chamber for receipt of articles for washing;a balancing apparatus configured to offset an imbalance created by the articles in the drum;a motor in mechanical communication with the drum, the motor configured for selectively rotating the drum within the tub; and receiving a signal indicative of a speed of the motor;', 'determining a deviation of the speed of the motor from a target motor speed;', 'comparing the deviation to one or more threshold values; and', 'determining whether to perform a rebalancing process or a spin out process based on the comparison of the deviation to the one or more threshold values., 'a controller configured to perform operations, the operations comprising2. The washing machine appliance of claim 1 , wherein the controller is configured to perform further operations comprising:operating the motor to reach the target motor speed; andafter the target motor speed is reached, controlling the motor to operating at a constant power;wherein the step of ...

SYSTEM AND METHOD FOR GENERATION OF A TACHOMETER SIGNAL AND REDUCTION OF JITTER

A system and method for generating a tachometer signal from a vibration sensor is disclosed in which an approximately idealized band pass filter is used along with a fast Fourier transform (FFT) to create a sufficient analytic signal to derive the tachometer signal for a shaft or other rotating component. In addition, jitter in the generated tachometer signal, or any tachometer signal, can be reduced by using an approximately idealized low pass filter and then transforming the filtered signal using a real FFT. These processes can be performed using a smart vibration sensor, which facilitates improved vibration analysis on rotating equipment where in the past the addition of a tachometer would be prohibitive due to cost, weight, certification requirements, or physical impracticality. 1. A method of generating a tachometer signal with reduced jitter comprising the steps of:receiving vibration data from a vibration sensor that monitors a rotating component;applying a band pass filter to the vibration data;using a fast Fourier transform to filter the vibration data;producing a tachometer signal from the transformed, filtered vibration data;applying a low band pass filter to the tachometer signal;fast Fourier transforming the filtered tachometer signal; andreconstructing a reconstructed tachometer signal with reduced jitter from the transformed, filtered tachometer signal.2. The method of wherein the step of producing a tachometer signal includes taking a pseudo integral.3. The method of wherein the step of producing a tachometer signal includes taking an inverse fast Fourier transform.4. The method of further including a step of normalizing tachometer zero crossing times by a sample rate of the vibration data.5. The method of further including a step of identifying variations on the tachometer signal unrelated to jitter.6. A system of generating a tachometer signal comprising:a vibration sensor that produces a vibration signal representative of a spectral content of ...

METHOD AND SYSTEM FOR THE OPTICAL DETERMINATION OF CORRECTION PLANES IN ROTATING ELEMENTS

The subject matter of the present invention relates to a system for the optical determination of correction planes in rotating elements, used in the process of balancing, in particular in diagnostic devices equipped with a system which has at least one video camera (K), at least one line projector (RL), a monitor screen (M) and a computer (P) which controls individual component elements of the system, wherein the video camera (K) cooperates with the line projector (RL) while projecting a view of the rotating element (EW) on the monitor screen (M) together with an image of a line (L) projected by means of the line projector (RL). 1. A method for the optical determination of correction planes in a rotating element (EW) used in the process of balancing , in particular in diagnostic devices equipped with a system that has at least one video camera (K) , at least one line projector (RL) , a monitor screen (M) and a computer (P) by means of which these component elements of the system are controlled , the method consisting in that a rotating element (EW) is placed on the shaft of a diagnostic device (PM) in such a manner that the rotating element (EW) is perpendicular to the axis of the shaft of a diagnostic device (PM) , characterized in that , prior to placing the rotating element (EW) on the shaft of the diagnostic device (PM) , an area of measurement space is determined in such a manner that pre-determined pixels Pof the monitor screen (M) having coordinates xand yare assigned to a set of points in the area of measurement space , which pixels are then assigned pre-determined values of radiuses rfrom the axis of the shaft of the diagnostic device (PM) and values of the distance Dof line (L) projected each time by the line projector (RL) on a virtual rotating element (EW′) from the diagnostic device (PM) , and in such determined area of measurement space the rotating element (EW) is placed on the shaft of the diagnostic device (PM) onto which a line (L) is projected by ...

Determining vehicle wheel misalignment

A computer and a method executable by the computer. The computer may include a processor and memory storing instructions executable by the processor. The instructions may include, to: receive sensor data from a sensor in a vehicle operating in a fully autonomous mode; using the data, determine a misalignment value; and based on the value, perform one of a plurality of vehicle driving functions that include stopping the vehicle.

METHOD AND DEVICE FOR DYNAMICALLY BALANCING A ROTATIONAL BODY OR A MOTOR HOUSING

A method dynamically balances a rotational body. First, the rotational body is set into rotation and then an imbalance of the rotational body is determined. According to the determined imbalance, material of the rotational body is removed and/or additional material is applied to the rotational body. The removal and/or the application is carried out by a laser beam of a laser. 1. A method for dynamically balancing a rotational body , which comprises the steps of:setting the rotational body in rotation;determining an imbalance of the rotational body;removing material from the rotational body and/or applying additional material to the rotational body in dependence on a determined imbalance; andcarrying out a material removal and/or a material application by means of a laser beam of a laser.2. The method according to claim 1 , which further comprises carrying out the material removal and/or the material application out during a rotation of the rotational body.3. The method according to claim 1 , which further comprises applying the additional material in a form of lines.4. The method according to claim 1 , wherein during the material removal and/or the material application claim 1 , moving the laser beam over an outer circumference of the rotational body by means of a deflecting element.5. The method according to claim 1 , which further comprises fastening a balancing mass on which the material removal and/or the material application take place on an outer circumference of the rotational body.6. The method according to claim 5 , which further comprises fastening the balancing mass on the outer circumference in a material-bonding manner by means of welding.7. The method according to claim 5 , wherein said balancing mass has an inner radius that is smaller than an outer radius of the outer circumference of the rotational body.8. A device for dynamically balancing a rotational body claim 5 , the device comprising:an imbalance measuring device for determining an imbalance ...

APPARATUS AND METHOD FOR DYNAMICALLY BALANCING ROTORS

A rotor is statically or dynamically balanced by driving the rotor to rotate at a desired speed, measuring an imbalance in the rotor, calculating an adjustment to be made in a mass distribution of the rotor based on the measured imbalance, and adjusting the mass distribution to reduce the imbalance. Mass adjustment is done by operating a laser to ablate material from the rotor according to operating parameters based on the adjustment calculated. The foregoing is done while the rotor is rotating. 1. A method for balancing a rotor , the method comprising:rotating the rotor about an axis;measuring an imbalance in the rotor;calculating an adjustment to be made to a mass distribution of the rotor based on the measured imbalance; andadjusting the mass distribution to reduce the imbalance, by operating a laser to ablate material from the rotor according to operating parameters based on the adjustment calculated,wherein the measuring, calculating, and adjusting are performed while the rotor is rotating.2. The method of claim 1 , wherein the measuring claim 1 , calculating claim 1 , and adjusting are performed while the rotor is installed in a machine comprising a shaft and a plurality of bearings supporting the shaft for rotation about the axis claim 1 , and wherein the rotor is attached to and rotates with the shaft.3. The method of claim 2 , wherein the machine has a configuration selected from the group consisting of a pump claim 2 , a turbine claim 2 , a propeller claim 2 , an impeller claim 2 , a gear claim 2 , a drum claim 2 , a flywheel claim 2 , and an engine.4. The method of claim 2 , comprising transporting a rotor balancing apparatus to the machine claim 2 , and operating the rotor balancing apparatus to perform the steps of measuring claim 2 , calculating claim 2 , and adjusting.5. The method of claim 1 , comprising repeating the steps of measuring claim 1 , calculating claim 1 , and adjusting one or more times to further reduce the imbalance.6. The method of ...

Weight Material Dispensing, Cutting and Applying System

An apparatus for balancing a wheel includes a tool and an arm control module. The tool is mechanically coupled to an arm and includes a leading edge, a trailing edge, and a face surface that forms an arc between the leading and trailing edges. The arm control module actuates the arm to position the leading edge of the tool a predetermined distance from an edge of a deck of a cutting apparatus to receive a piece of non-segmented wheel weight material. A blade of a cutting apparatus passes between the edge of the deck and the leading edge of the tool to cut the piece from the non-segmented wheel weight material. 1a tool that is mechanically coupled to an arm and that includes a leading edge, a trailing edge, and a face surface that forms an arc between the leading and trailing edges; andan arm control module that actuates the arm to position the leading edge of the tool a predetermined distance from an edge of a deck of a cutting apparatus to receive a piece of non-segmented wheel weight material,wherein a blade of the cutting apparatus passes between the edge of the deck and the leading edge of the tool to cut the piece from the non-segmented wheel weight material.. An apparatus for balancing a wheel, the apparatus comprising: This application is a continuation of U.S. patent application Ser. No. 13/175,413, filed on Jul. 2, 2011, which is a continuation-in-part of U.S. patent application Ser. No. 12/683,495 (now U.S. Pat. No. 8,505,423), filed on Jan. 7, 2010, which claims priority to U.S. Provisional Application No. 61/143,284, filed on Jan. 8, 2009. This application claims the benefit of U.S. Provisional Application No. 61/428,534, filed on Dec. 30, 2010. The entire disclosures of the above applications are incorporated by reference herein.The present disclosure relates to weight material and more particularly to weight material dispensing and cutting systems and methods of operating such systems.The background description provided herein is for the purpose of ...

METHOD AND APPARATUS FOR DIAGNOSING A FAULT CONDITION IN AN ELECTRIC MACHINE

There is disclosed a method for diagnosing a fault condition in an electric machine . The method comprises measuring S at least one physical parameter generated during operation of the electric machine ; analysing S the or each measured parameter in a frequency domain; and determining S whether the electric machine has a stator or rotor winding fault based on a comparison of an amplitude of the or each analysed parameter at a first predetermined frequency and a first threshold amplitude for the first frequency. The at least one physical parameter comprises a sound generated by the electric machine 1. A method for diagnosing a fault condition in an electric machine , the method comprising:measuring at least one physical parameter generated during operation of the electric machine;analysing the or each measured parameter in a frequency domain; anddetermining whether the electric machine has a stator or rotor winding fault based on a comparison of an amplitude of the or each analysed parameter at a first predetermined frequency and a first threshold amplitude for the first frequency;wherein the at least one physical parameter comprises a sound generated by the electric machine; andfurther comprising determining the type of electric machine and/or the loading the electric machine is subjected to, wherein the or each predetermined frequency and its respective threshold amplitude is determined based on the type of electric machine and/or its loading.2. A method according to claim 1 , wherein the first threshold amplitude is an upper threshold amplitude claim 1 , and wherein the electric machine is determined to have a stator or rotor winding fault if the amplitude of the or each analysed parameter at the first frequency is above the upper threshold amplitude.3. A method according to claim 1 , further comprising determining whether the electric machine is unbalanced based on a comparison of an amplitude of the or each analysed parameter at a second predetermined frequency ...

Pneumatic Wheel Clamping Apparatus for a Wheel Service Machine

An apparatus for a wheel service machine includes a body having an axis and a aperture through the axis, the aperture shaped to receive a rotary shaft, a first chamber and a second chamber located in the body, a pneumatic inlet communicated with the second chamber, the pneumatic inlet configured to be couple to a pneumatic supply line. A piston is movably disposed in the first chamber between a retracted and an extended position, the piston moving from the retracted position to the extended position when pressure from the second chamber is supplied to the first chamber. A valve is positioned between the first and second chambers, the valve selectively communicating the first and second chambers. A wheel service apparatus includes a base, a motor configured to rotate a rotary shaft, and a pneumatic nut. A docking station for the pneumatic nut can be located on the base. 1. A pneumatic nut apparatus for use on a rotary shaft of a wheel service machine , the pneumatic nut apparatus comprising:a body having an axis and an aperture through the body along the axis, the aperture shaped to receive the rotary shaft;a first chamber located in the body;a second chamber located in the body;a pneumatic inlet communicated with the second chamber, the pneumatic inlet configured to couple to a pneumatic supply line; anda piston movably disposed in the first chamber between a retracted position and an extended position, the piston movable from the retracted position to the extended position when a pressure from the second chamber is supplied to the first chamber.2. The apparatus of claim 1 , further comprising a valve disposed on the body claim 1 , the valve movable between a first position and a second position claim 1 , the valve configured to substantially prevent fluid communication between the first and second chambers when the valve is in the first position and to allow fluid communication between the first and second chambers when the valve is in the second position.3. The ...

METHOD FOR ACQUIRING AMOUNT OF UNBALANCE OF ROTOR

This invention provides a method for acquiring the unbalance of a rotor. It is used for decoupling the unbalance of the rotor and the unbalance of the balancing machine itself, including below procedures: set at least two reference points of the unbalance on the rotor, on the plane perpendicular to the rotating axis of the rotor, there is an angle between the lines connecting the projection of each reference point to the projection of the rotating axis; measure the unbalance of the rotor in sequence by using each reference point as angle reference; through vector calculation of the unbalance corresponding to two arbitrarily selected reference points, the unbalance of the rotor is obtained. By setting at least two zero angle reference points of the unbalance on the rotor before the measurement can avoid the influence to the unbalance of the rotor caused by the change of zero angle reference point during the measurement process. 1. A method to acquire unbalance of a rotor , for decoupling the unbalance of the rotor and the unbalance of the balancing machine itself , the mentioned balancing machine adopts free angle drive type to measure the unbalance of the rotor , with the characteristics as reflected through the following procedures:set at least two zero angle reference points of the unbalance on the rotor, on a plane perpendicular to a rotating axis of the rotor, there is an angle between lines connecting a projection of each reference point to the projection of the rotating axis;measure the unbalance of the rotor in a sequence by using each reference point as an angle reference, during the procedure, when moving an angle sensor from one position to a new position to detect a new zero angle reference point, position of the angle sensor should be set up so that the angle between two perpendicular lines as following is zero when view two lines along rotational axis, the two perpendicular lines are, perpendicular line drawn from the point where a space position of new ...

Nonlinear Instability Scientific Demonstrator for Vehicle Dynamics

An apparatus and a method for demonstrating a new scientific discovery made by the inventor about the nonlinear instability of vehicles, like aircrafts, automobiles and ocean vehicles. The apparatus comprises a model and a three-gimbaled framework that permits the model to respond to inertial moments about the axes of which the moments of inertias are the smallest and the largest. In these two axes, the apparatus has restoring and damping capabilities. The apparatus also comprises external driven mechanisms to rotate the model about the intermediate principal axis of inertia. A method with closed form formulas for the external driven frequencies and amplitudes to be used to excite the nonlinear instabilities of the model is given. The model could be an aircraft, an automobile, a ship, or even a rectangular block.

PORTABLE HIGH SPEED BALANCE MACHINE

A portable machine includes a base assembly defining a vacuum chamber, the base assembly including a decking having a machine way. The portable machine also includes a machine component releasably coupled to the machine way, and a plurality of load-equalizing members coupled to the base assembly that evenly distribute and support a load positioned on the base. 1. A portable machine comprising:a base assembly defining a vacuum chamber, the base assembly including a decking having a machine way;a machine component releasably coupled to the machine way; anda plurality of load-equalizing members coupled to the base assembly that evenly distribute and support a load positioned on the base.2. The portable machine of claim 1 , wherein the base assembly includes a skirt and a seal disposed below the skirt to seal the base assembly to a ground surface.3. The portable machine of claim 1 , wherein the machine component is a pedestal assembly that includes two pedestals that are movable axially along the machine way relative to one another.4. The portable machine of claim 3 , wherein each pedestal is mounted on a spring-damper system that includes a set of springs and a damper to reduce dynamic forces.5. The portable machine of claim 4 , wherein the springs are pneumatic springs that each have a spring rate that is a function of a pressure supplied by an external pressure source.6. The portable machine of claim 4 , wherein the pedestal assembly also includes sensors coupled to the pedestals that measure unbalance based on motion in the spring-damper systems.7. The portable machine of claim 3 , further comprising a machine drive/controller that drives rotation of a component to be tested in the pedestal assembly claim 3 , the machine drive/controller also releasably coupled to the machine way.8. The portable machine of claim 1 , wherein the base assembly includes a support structure disposed below the decking claim 1 , the support structure including a metal frame with flanges ...

Eccentric Buildup Detection in Concrete Drums

The present invention provides a method and system for detecting hardened concrete buildup in a mixer drum which is substantially devoid of plastic concrete. An exemplary method involves monitoring the hydraulic pressure required to rotate the drum through at least two successive rotations at constant speed, using a hydraulic pressure sensor on hydraulic charge side, discharge side, or preferably both sides of the hydraulic motor which turns the mixer drum; and detecting when the pressure/time data curve indicates eccentric behavior of the mixer drum, whereby an alarm or other indication is provided to confirm that the hardened concrete buildup in the truck is not acceptable. The buildup detection method and system of the present invention does not require the use of an automated slump monitoring system, but can be implemented in combination with such systems with favorable results and advantages.

BALANCE INSPECTION DEVICE

A balance inspection device includes a bearing housing in which a bearing supporting a rotary shaft is provided, a jig that is disposed on one side of the bearing housing in a direction of a rotation axis and houses an impeller in an impeller housing space formed therein, a spray nozzle that is provided on the jig and includes a tip opened to the impeller housing space, and a gas supply unit that supplies gas to the spray nozzle. The spray nozzle is adapted to spray the gas from the tip while the gas supplied from the gas supply unit has a circumferential component opposite to a rotational direction of the impeller. 1: A balance inspection device for inspecting the balance of a rotating body of which an impeller is provided at one end of a rotary shaft , the balance inspection device comprising:a bearing housing in which a bearing supporting the rotary shaft is provided;a jig that is disposed on one side of the bearing housing in a direction of a rotation axis and houses the impeller in an impeller housing space formed therein;a spray nozzle that is provided on the jig and includes a tip opened to the impeller housing space; anda gas supply unit that supplies gas to the spray nozzle,wherein the spray nozzle is adapted to spray the gas from the tip while the gas supplied from the gas supply unit has a circumferential component opposite to a rotational direction of the impeller.2: The balance inspection device according to claim 1 ,wherein the rotating body is a rotating body of a turbocharger of which a turbine impeller and a compressor impeller are provided at both ends of the rotary shaft,the jig is a compressor-side jig that houses the compressor impeller as the impeller, andthe spray nozzle is provided on the compressor-side jig, and is adapted to spray the gas from the tip while the gas supplied from the gas supply unit has a circumferential component opposite to a rotational direction of the compressor impeller.3: The balance inspection device according to ...

METHOD FOR DETERMINING CURRENT ECCENTRICITY OF ROTATING ROTOR AND METHOD OF DIAGNOSTICS OF ECCENTRICITY OF ROTATING ROTOR

The invention relates to a method for determining current eccentricity of rotating rotor () at which is rotor () equipped with a phase marker () scanned at constant speed of rotation up to 500 rpm by a sensor () of phase marker () at the point of the phase marker (), and outside of the phase marker () by at least one sensor () of relative rotor vibrations, while after digitizing the signals of the sensors (), is from them estimated current position of phasor of the 1st harmonic component of signal of the sensor () of relative rotor vibrations in the complex plane, which is subsequently compared to a reference position of the phasor of the 1st harmonic component of this signal, which has been determined in advance, whereas the variation vector of the phasors is an image of eccentricity of the rotor (). Further on, is the invention related to a method of diagnostics of eccentricity of rotating rotor () based on this method for determining current eccentricity. 111550555330440330440503304401. A method for determining current eccentricity of rotating rotor () , characterized by that , the rotor () equipped with a phase marker () is at constant speed of rotation up to 500 rpm scanned by a sensor () of phase marker () at the point of this marker () , and outside of the phase marker () by at least one sensor ( , , , ) of relative rotor vibrations , while after digitizing the signals of the sensors ( , , , , ) , is from them estimated current position of phasor of the 1harmonic component of signal of the sensor ( , , , ) of relative rotor vibrations in the complex plane , which is subsequently compared to a reference position of the phasor of the 1harmonic component of this signal , which has been determined in advance , whereas the variation vector of the phasors is an image of eccentricity of the rotor ().2153304403304401013304403304403304405. The method according to the claim 1 , characterized by that claim 1 , the rotor () is outside of the phase marker () scanned by at ...

VIBRATION INSULATOR AND UNBALANCE DETECTION DEVICE INCLUDING VIBRATION INSULATOR

There is provided a vibration insulator mounted between a cartridge and a wheel-side housing, in which the cartridge includes a rotor having a wheel and a rotational shaft and a bearing housing accommodating a bearing rotatably supporting the rotor, and the wheel-side housing is to be pressed to the bearing housing in an axial direction. The vibration insulator includes an annular outer ring portion having a wheel-side contact surface configured to come into contact with the wheel-side housing, an annular inner ring portion disposed inside the outer ring portion with a clearance from the outer ring portion and having a bearing-side contact surface configured to come into contact with the bearing housing, and a flexible support portion interposed between the outer ring portion and the inner ring portion and connecting the outer ring portion and the inner ring portion, the flexible support portion being elastically deformable. 1. A vibration insulator mounted between a cartridge and a wheel-side housing , the cartridge including: a rotor having a wheel and a rotational shaft; and a bearing housing accommodating a bearing rotatably supporting the rotor , the wheel-side housing being to be pressed to the bearing housing in an axial direction , the vibration insulator comprising:an annular outer ring portion having a wheel-side contact surface configured to come into contact with the wheel-side housing;an annular inner ring portion disposed inside the outer ring portion with a clearance from the outer ring portion and having a bearing-side contact surface configured to come into contact with the bearing housing; anda flexible support portion interposed between the outer ring portion and the inner ring portion and connecting the outer ring portion and the inner ring portion, the flexible support portion being elastically deformable.2. The vibration insulator according to claim 1 , an annular plate spring part having an annular shape and disposed in the clearance;', 'an ...

DEVICES AND METHODS FOR BALANCING A HIGH-PRESSURE SPOOL OF A GAS TURBINE ENGINE

Devices and methods useful for balancing high-pressure spools of gas turbine engines are disclosed. An exemplary device may comprise: an input shaft configured to be coupled to an output of an accessory gear box driven by a high-pressure spool of a gas turbine engine; a first trigger rotatably coupled to the input shaft at a first speed ratio; and a sensor configured to detect the trigger at each revolution of the trigger. The first speed ratio may permit a rotational speed of the first trigger to be substantially the same as a rotational speed of the high-pressure spool. Upon detection of the trigger, the sensor may generate one or more signals representative of each associated revolution of the high-pressure spool of the gas turbine engine. 1. A device useful in determining a balancing solution for a high-pressure spool of a gas turbine engine , the device comprising:an input shaft configured to be coupled to an output of an accessory gear box driven by the high-pressure spool of the gas turbine engine;a first trigger rotatably coupled to the input shaft at a first speed ratio, the first speed ratio permitting a rotational speed of the first trigger to be substantially the same as a rotational speed of the high-pressure spool; anda sensor configured to detect the trigger at each revolution of the trigger and, upon detection of the trigger, generate one or more signals representative of each associated revolution of the high-pressure spool of the gas turbine engine.2. The device as defined in claim 1 , comprising a second trigger rotatably coupled to the input shaft at a second speed ratio claim 1 , the second speed ratio permitting a rotational speed of the second trigger to be substantially identical to a rotational speed of a high-pressure spool of another gas turbine engine when the device is used with the other gas turbine engine.3. A device useful in determining a balancing solution for a high-pressure spool of a gas turbine engine claim 1 , the device ...

TIRE BALANCE MEASUREMENT DEVICE, EVALUATION METHOD OF TIRE BALANCE MEASUREMENT DEVICE, CALIBRATION METHOD OF TIRE BALANCE MEASUREMENT DEVICE, AND CALIBRATION PROGRAM OF TIRE BALANCE MEASUREMENT DEVICE

A tire balance measurement device includes a rotation drive portion, an eccentric force measurement unit, a calculation unit, and an evaluation unit. The eccentric force measurement unit measures an eccentric force generated in a main shaft. The calculation unit calculates an eccentric amount of the main shaft based on the eccentric force measured by the eccentric force measurement unit. The evaluation unit evaluates the eccentric amount of the main shaft based on a correlation between the eccentric force measured by the eccentric force measurement unit when the main shaft is rotated at a predetermined rotation speed, and the rotation speed. 1. A tire balance measurement device , comprising:a rotation drive portion which rotates a main shaft which supports at least one of a pair of rims which can interpose a tire therebetween;an eccentric force measurement unit which measures an eccentric force generated in the main shaft when the main shaft is rotated;a calculation unit which calculates an eccentric amount of the main shaft based on the eccentric amount measured by the eccentric force measurement unit; andan evaluation unit which evaluates the eccentric amount of the main shaft based on a correlation between the eccentric amount calculated by the calculation unit based on the eccentric force measured when the main shaft is rotated at a predetermined rotation speed by the rotation drive portion, and the rotation speed.2. The tire balance measurement device according to claim 1 , further comprising:a correction unit which corrects Calculation Expression used in a calculation by the calculation unit based on an evaluation result of the eccentric amount by the evaluation unit.3. The tire balance measurement device according to claim 1 ,wherein the evaluation unit evaluates the eccentric amount of the main shaft based on a correlation between the eccentric amount calculated by the calculation unit based on the eccentric force measured when the main shaft is rotated at ...

SYSTEMS AND METHODS FOR IMBALANCE MEASUREMENT OF ROTATING MACHINERY

A balancing system for use with a rotating member disposed in a stationary housing is configured for mounting to the stationary housing, and includes a first inclinometer and at least one processor. The first inclinometer is configured to provide inclination information at a first frequency, and to provide vibration information at a second frequency. The second frequency is higher than the first frequency. The at least one processor is operably coupled to the first inclinometer to acquire the vibration information. The at least one processor is configured to determine a state of balance of the rotating member using the vibration information but not the inclination information. 1. A balancing system for use with a rotating member disposed in a stationary housing , the balancing system configured for mounting to the stationary housing , the balancing system comprising:a first inclinometer configured to provide inclination information at a first frequency and vibration information at a second frequency, the second frequency higher than the first frequency; andat least one processor operably coupled to the first inclinometer, the at least one processor coupled to the first inclinometer and configured to acquire the vibration information from the first inclinometer, the at least one processor configured to determine a state of balance of the rotating member using the vibration information but not the inclination information.2. The balancing system of claim 1 , wherein the first inclinometer comprises a Micro-Electro-Mechanical System (MEMS) based accelerometer comprising a dampening gas configured to limit the frequency output of the accelerometer.3. The balancing system of claim 1 , further comprising a high-pass filter interposed between the first inclinometer and the at least one processor claim 1 , the high-pass filter configured to allow the vibration information at the second frequency to pass to the at least one processor and to prevent the inclination information ...

Rotation drum alignment ascertaining device

In order to ascertain the placement of a rotation drum relative to the shaft axis of a spindle assembly, an alignment ascertaining device according to the present invention comprises a body portion made mountable on a mounting surface formed horizontally on the spindle assembly, the body portion having a guide face in the direction at right angles to the mounting surface; a linear guide portion mounted in an upward and down ward direction on a guide face; a slider mounted via a rolling member to the linear guide portion, the slider made movable in a direction in which the linear guide portion is installed; an arm member whose proximal end portion is attached to the slider and whose distal end portion extends toward the rotation drum; and a dial gauge mounted on the distal end portion of the arm member.

Rotor Balance Weight System

A rotor has a rotor body having: a flange with a circumferential array of discontiguous apertures; and a surface spaced apart from the flange. One or more rotor balance weight assemblies each have a weight and a fastener. The weight has: a passageway having a first end and a second end; an internal thread along the passageway; and a boss at the first end of the passageway. The boss is in a respective one of the apertures. The fastener has: a shank having a first end and a second end and external thread engaged to the passageway internal thread; an engagement feature at the shank first end for engagement by a tool to turn the fastener; and a head at the second end contacts the surface. 1. A rotor having: a flange with a circumferential array of discontiguous apertures; and', 'a surface spaced apart from the flange; and, 'rotor body having [ a passageway having a first end and a second end;', 'an internal thread along the passageway; and', 'a boss at the first end of the passageway, the boss in a respective associated one of the apertures; and, 'a weight having, a shank having a first end and a second end and external thread engaged to the passageway internal thread;', 'an engagement feature at the shank first end for engagement by a tool to turn the fastener; and', 'a head at the second end, the head contacting the surface., 'a fastener having], 'or more rotor balance weight assemblies, each having2. The rotor of wherein:the circumferential array of apertures is 8-100 apertures.3. The rotor of wherein:the flange is an axial flange.4. The rotor of wherein:said surface has a plurality of recesses, each aligned with a respective associated one of the apertures; andthe fastener head in the recess associated with the associated one of the apertures.5. The rotor of wherein:each said recess is blind.6. The rotor of wherein:each said recess is doubly concave.7. The rotor of wherein:each said head lacks engagement features for tool engagement.8. The rotor of wherein:each said ...

Dynamic balance detecting device

The dynamic balance detecting device includes a platform, a pillar, a main shaft, a vibration sensor, a rotation sensor, a dynamic measuring tester, and a controller. The pillar is connected to the platform. The main shaft is positioned on the pillar for driving a rotor. The vibration sensor is positioned adjacent to the main shaft for detecting vibration amount of the main shaft. The rotation sensor is positioned adjacent to the main shaft and spaced from the vibration sensor for detecting a rotation of the main shaft. The dynamic measuring tester is positioned on the platform for receiving vibration data obtained by the vibration sensor and rotation data obtained by the rotation sensor in real time to analyze and determine whether dynamic balance of the rotor achieving as required, and calculates a dynamic balance regulating amount for the rotor.

TIRE INSPECTION METHOD AND TIRE INSPECTION APPARATUS

For a vulcanized tire, after executing a third inspection step of inspecting an internal defect, a first inspection step of inspecting uniformity and a second inspection step of inspecting dynamic balance are executed. For the tire of which an internal defect is detected in the third inspection step, the first inspection step and the second inspection step are not executed and the inspection is over. 1. A tire inspection method comprising: executing , on a vulcanized tire , a first inspection step of inspecting uniformity , a second inspection step of inspecting dynamic balance , and a third inspection step of inspecting an internal defect ,wherein the first inspection step and the second inspection step are executed after executing the third inspection step.2. The tire inspection method according to claim 1 ,wherein the first inspection step and the second inspection step are not executed for a tire of which an internal defect is detected in the third inspection step.3. A tire inspection apparatus comprising:a first inspection part configured to inspect uniformity, a second inspection part configured to inspect dynamic balance, and a third inspection part configured to inspect an internal defect, for a vulcanized tire; anda control unit configured to control the first inspection part, the second inspection part and the third inspection part,wherein the control unit is configured to inspect the tire in the first inspection part and the second inspection part after inspecting the tire in the third inspection part.4. The tire inspection apparatus according to claim 3 ,wherein the first inspection part comprises a rotation means for rotating the tire around an axis of the tire while holding the same, andwherein the third inspection part is configured to inspect an internal defect of the tire held by the rotation means.5. The tire inspection apparatus according to claim 3 , comprising a trimming device configured to cut spews formed on an outer surface of the tire while ...

RIVETED JOINT RACK ANALYSIS

A method to analyze a rack with riveted joints is provided. The method includes importing a computer aided design (CAD) model of a rack and finding all annular edges in the CAD model with a predefined parameter. The method further includes gathering coordinates of nodes on the found annular edges, calculating average coordinates for the nodes of each found annular edge and identifying the average coordinates as a center point for each found annular edge. The method also includes identifying pairs of proximal center points and, for each pair of proximal center points, connecting the nodes on the found annular edges with the corresponding center point with rigid constraints and generating a beam element connecting the proximal center points in accordance with the rigid constraints. 1. A method to analyze a rack with riveted joints , the method comprising:importing a computer aided design (CAD) model of the rack;finding all annular edges in the CAD model with a predefined parameter;gathering coordinates of nodes on the found annular edges, calculating average coordinates for the nodes of each found annular edge and identifying the average coordinates as a center point for each found annular edge;identifying pairs of proximal center points; andfor each pair of proximal center points, connecting the nodes on the found annular edges with the corresponding center point with rigid constraints and generating a beam element connecting the proximal center points in accordance with the rigid constraints.2. The method according to claim 1 , wherein the method further comprises conducting a beam analysis of each generated beam element.3. The method according to claim 2 , wherein the method further comprises:assessing an ability of the rack to satisfy predefined requirements based on results of the beam analysis; andre-designing the rack in accordance with a determination that the rack is unable to satisfy the predefined requirements.4. The method according to claim 1 , wherein ...

METHOD FOR MEASURING A TRUE CONCENTRICITY OF A ROTATING SHAFT

The present disclosure is directed toward a method for measuring a true concentricity of a rotating shaft. The method includes simultaneously measuring, with diametrically opposed position sensors, opposite sides of the rotating shaft at an initial state to acquire a first measurement data and at a 180-degree rotation to acquire a second measurement data. The method further determines a rotational centerline and a shaft centerline based on the first and second measurement data, and calculates a concentricity error of the rotating shaft based on the determined rotational centerline and the shaft centerline. 1. A method for measuring a true concentricity of a rotating shaft , the method comprising:simultaneously measuring, with diametrically opposed position sensors, opposite sides of the rotating shaft at an initial state to acquire a first measurement data and at a 180-degree rotation to acquire a second measurement data;determining a rotational centerline and a shaft centerline based on the first and second measurement data; andcalculating a concentricity error of the rotating shaft based on the determined rotational centerline and the shaft centerline.2. The method of claim 1 , wherein the rotating shaft has a drive input at one end and a gear at the other end claim 1 , and the position sensors are configured to measure opposite sides of the drive input of the rotating shaft.3. The method of further comprising driving the gear portion of the rotating shaft to rotate the rotating shaft.4. The method of claim 1 , wherein a two-dimensional optical micrometer is provided as the position sensors for measuring the opposite sides of the rotating shaft.5. The method of further comprising:simultaneously re-measuring the opposite sides of the rotating shaft at the initial state position and at the 180-degree rotation multiple times to acquire multiple first measurement data and multiple second measurement data;determining an average rotational centerline and an average ...

UNBALANCE DETECTION DEVICE, AND UNBALANCE DETECTION METHOD

An unbalance detection device for detecting unbalance of a rotor of a turbo-cartridge which includes the rotor including a turbine wheel and a compressor wheel coupled via a rotational shaft and a bearing housing accommodating a bearing which supports the rotor rotatably, includes: a sound pressure sensor capable of detecting vibration upon rotation of the rotor by contactlessly measuring a sound pressure generated from vibration upon rotation of the rotor. 1. An unbalance detection device for detecting unbalance of a rotor of a turbo-cartridge which includes the rotor including a turbine wheel and a compressor wheel coupled via a rotational shaft and a bearing housing accommodating a bearing which supports the rotor rotatably , the unbalance detection device comprising:a sound pressure sensor capable of detecting vibration upon rotation of the rotor by contactlessly measuring a sound pressure generated from vibration upon rotation of the rotor.2. The unbalance detection device according to claim 1 ,wherein the sound pressure sensor includes a microphone having a directional characteristic capable of picking a sound pressure from a specific direction, or the sound pressure sensor is configured to measure a sound pressure from the specific direction on the basis of respective sound pressures picked by a plurality of microphones.3. The unbalance detection device according to claim 1 ,wherein the sound pressure sensor has a self-noise level of 50 dB or less.4. The unbalance detection device according to claim 2 , further comprising:a turbine-side housing member accommodating the turbine wheel;a compressor-side housing member accommodating the compressor wheel;a support mechanism configured to nip and support the turbo-cartridge from both sides by pressing at least one of the turbine-side housing member or the compressor-side housing member toward the turbo-cartridge; anda vibration insulator interposed in each of a gap between the turbine-side housing member and the ...

METHOD AND MACHINE FOR BALANCING A VEHICLE WHEEL

A method for balancing a vehicle wheel includes mounting a wheel to be balanced on a rotating shaft of a machine computerized for measuring imbalances, and selecting an optimum commercial balancing weight which, when positioned on a correction plane, minimizes residual imbalance on reference planes of the wheel where the balancing tolerance is considered. One compares the residual imbalance value at the reference planes with the prescribed balancing tolerance after subtracting a vector of the static imbalance generated by the optimum balancing weight. An indicator device is activated to indicate on the wheel the optimum axial position of a correction plane for a balancing weight where the residual imbalance at the reference planes is within tolerance. 1. A method for balancing a vehicle wheel , comprising the steps ofmounting a wheel to be balanced on a rotating shaft of a machine that comprises a computerized system for measuring imbalances, a system for measuring the distance and the diameter of the possible correction regions, an indicator device that is configured to indicate one or more correction positions on said wheel;determining the axial position of the correction plane where a static balancing weight is to be located so as to minimize the imbalance on the reference planes of the wheel, where the residual imbalance is to be measured;selecting an optimum commercial balancing weight which, when positioned on said correction plane, minimizes the residual imbalance on the reference planes where the balancing tolerance is considered;comparing the residual imbalance value at the reference planes with the prescribed balancing tolerance after subtracting the vector of the static imbalance generated by the optimum balancing weight obtained above;signaling to the operator the possibility to perform balancing with a single balancing weight if the residual imbalance at the reference planes is within tolerance;activating said indicator device in order to indicate on ...

Stage-by-stage Measurement, Regulation and Distribution Method for Dynamic Characteristics of Multi-Stage Components of Large-Scale High-Speed Rotary Equipment Based on Multi-Biased Error Synchronous Compensation

The present invention provides a stage-by-stage measurement, regulation and distribution method for dynamic characteristics of multi-stage components of large-scale high-speed rotary equipment based on multi-biased error synchronous compensation and belongs to the technical field of mechanical assembly. Firstly, a single-stage rotor five-parameter circular contour measurement model is established, and the five-parameter circular contour measurement model is simplified by using a distance from an ith sampling point of an ellipse to a geometry center to obtain a simplified five-parameter circular contour measurement model. Then, actually measured circular contour data is taken into the simplified five-parameter circular contour measurement model to determine a relationship between dynamic response parameters after rotor assembly and eccentricity errors as well as the amount of unbalance of all stages of rotors. Finally, a rotor speed is set according to the relationship between the dynamic response parameters after rotor assembly and the eccentricity errors as well as the amount of unbalance of all stages of rotors to obtain a critical speed parameter objective function. The high-speed response critical speed parameters for n rotors assembly are optimized by adjusting assembly phases of all stages of rotors, so that a high-speed response to a multi-stage rotor of an aero-engine can be optimized. 1. A stage-by-stage measurement , regulation and distribution method for dynamic characteristics of multi-stage components of large-scale high-speed rotary equipment based on multi-biased error synchronous compensation , comprising:{'sub': 0', 'i, 'sup': '−3', 'firstly, establishing a single-stage rotor five-parameter circular contour measurement model, comprising an eccentricity error of a single-stage rotor to be measured, a sensor probe offset, a sensor ball radius, a measurement plane tilt error and a sensor tilt error; when the eccentricity error is e/r<10with respect to ...

VIBRATION DETECTION DEVICE, AND UNBALANCE DETECTION DEVICE INCLUDING THE VIBRATION DETECTION DEVICE

A vibration detection device for detecting vibration of a cartridge including a bearing housing that accommodates a rotor coupling a wheel and a rotor shaft, and a bearing rotatably supporting the rotor, the bearing housing including a lubricant-oil passage port for allowing lubricant oil to pass through an interior of the bearing housing, includes: a sensor mount attached to an oil-flow-passage forming member configured to be capable of connecting to and separating from the bearing housing, the oil-flow-passage forming member including, inside thereof, an oil flow passage through which one of lubricant oil to be supplied to the interior of the bearing housing via the lubricant-oil passage port or lubricant oil discharged from the interior of the bearing housing via the lubricant-oil passage port flows; a vibration sensor disposed on the sensor mount; and a vibration transmission leg portion connected to the sensor mount and configured to be in contact with the bearing housing in a state where the oil-flow-passage forming member is connected to the bearing housing. 1. A vibration detection device for detecting vibration of a cartridge including a bearing housing that accommodates a rotor coupling a wheel and a rotor shaft , and a bearing rotatably supporting the rotor , the bearing housing including a lubricant-oil passage port for allowing lubricant oil to pass through an interior of the bearing housing , the vibration detection device comprising:a sensor mount attached to an oil-flow-passage forming member configured to be capable of connecting to and separating from the bearing housing, the oil-flow-passage forming member including, inside thereof, an oil flow passage through which one of lubricant oil to be supplied to the interior of the bearing housing via the lubricant-oil passage port or lubricant oil discharged from the interior of the bearing housing via the lubricant-oil passage port flows;a vibration sensor disposed on the sensor mount; anda vibration ...

ROTATING BODY LOAD MEASURING DEVICE

A rotating body load measuring device () according to the present invention detects a force acting on a rotating body () that is formed in a columnar shape and rotates around a central axis (L) of a shaft body () protruding from a center of an end face, in a state where a main load is applied to the rotating body () in a main load direction (P) that is one direction in a radial direction, and includes a load cell () having a measurement center (C) and capable of measuring forces acting in at least three directions with the measurement center (C) as a reference, in which the load cell () is disposed such that the measurement center (C) and the central axis (L) overlap when viewed in the main load direction (P), and is connected to the shaft body (). 1. A rotating body load measuring device for detecting a force acting on a rotating body that is formed in a columnar shape and rotates around a central axis of a shaft body protruding from a center of an end face , in a state where a main load is applied to the rotating body in a main load direction that is one direction in a radial direction , the rotating body load measuring device comprising:a load cell having a measurement center and capable of measuring forces acting in at least three directions with the measurement center as a reference,wherein the load cell is disposed such that the measurement center and the central axis overlap when viewed in the main load direction, and is connected to the shaft body.2. The rotating body load measuring device according to claim 1 , wherein the load cell is disposed such that the central axis passes through the measurement center.3. A rotating body load measuring device for detecting a force acting on a rotating body that is formed in a columnar shape and rotates around a central axis of a shaft body protruding from a center of an end face claim 1 , in a state where a main load is applied to the rotating body in a main load direction that is one direction in a radial direction ...

TESTING APPARATUS, COMPUTER READABLE MEDIUM, AND METHOD FOR MINIMIZING RUNOUT

A testing apparatus for minimizing runout of a rotating assembly includes a measurement device and a runout evaluator. The measurement device measures a distance to a surface. The runout evaluator obtains a first runout of a surface of a first member of the rotating assembly from the measurement device. The first runout has a magnitude and a phase. The runout evaluator obtains a second runout of a surface of a second member of the rotating assembly from the measurement device. The second runout has a magnitude and a phase. The runout evaluator determines a rotational position of the first member relative to the second member which results in a reduced runout of the rotating assembly. The determination of the rotational position is based on the magnitude and the phase of the first runout and the magnitude and the phase of the second runout. 1. A testing apparatus for minimizing runout of a rotating assembly , comprising:a measurement device configured to measure a distance to a surface; and obtain a first runout of a surface of a first member of the rotating assembly from the measurement device, the first runout having a magnitude and a phase,', 'obtain a second runout of a surface of a second member of the rotating assembly from the measurement device, the second runout having a magnitude and a phase, and', 'determine a rotational position of the first member relative to the second member which results in a reduced runout of the rotating assembly based on the magnitude and the phase of the first runout and the magnitude and the phase of the second runout., 'a runout evaluator configured to'}2. The testing apparatus according to claim 1 ,wherein the runout evaluator is configured to obtain the first runout and the second runout based on periodic deviations of the surfaces of the first member and the second member with respect to an axis extending perpendicular to a rotational axis of the rotating assembly, the periodic deviations being obtained from the distance ...

SHAFT PRECISION AUTOMATIC MEASURING DEVICE FOR MOTOR

A shaft precision automatic measurement device for motors is provided that is able to automatically measure shaft precision of a motor. A shaft precision automatic measurement device () for a motor () includes: a gripping mechanism () that grips the shaft (); a first contact-type displacement sensor () that is able to measure a position of the flange face () by contacting to follow the flange face (); a second contact-type displacement sensor () that is able to measure a position of the fitting face () by contacting to follow the fitting face (); a rotary mechanism () that causes the device main body () to rotate in a state gripping the shaft () by the gripping mechanism () and executing measurement by way of the respective displacement sensors; a displacement data acquisition part () that acquires displacement data of the flange face () and displacement data of the fitting face (); and a measurement part () that measures center runout and face deflection of the shaft () based on the respective displacement data acquired by the displacement data acquisition part (). 1. A shaft precision automatic measurement device for a motor that includes a shaft , and a motor main body having a flange face and a fitting face to be fitted to a mounting target of the motor , the device comprising:a device main body;a gripping part that is provided to the device main body, and grips the shaft;a first contact-type displacement sensor that is provided to the device main body, and is able to measure a position of the flange face by contacting to follow the flange face;a second contact-type displacement sensor that is provided to the device main body, and is able to measure a position of the fitting face by contacting to follow the fitting face;a rotary part that causes the device main body to rotate in a state gripping the shaft by way of the gripping part, and executing measurement by way of the first contact-type displacement sensor and the second contact-type displacement sensor;a ...

METHOD AND DEVICE FOR BALANCING

Methods of balancing a workpiece, in which the workpiece is rotated about an axis of rotation. The forces and/or torques that result from an unbalance of the workpiece during the rotation of the workpiece are measured, and material is removed from the workpiece to reduce the unbalance. The method includes removal of material from the rotating workpiece during measuring or as the workpiece is continuously rotated between measuring and material removal. 116.-. (canceled)17. A method for balancing a workpiece , comprisingrotating the workpiece about an axis of rotation;measuring the forces and/or torques and/or oscillations that result during the rotation of the workpiece from an unbalance of the workpiece; andremoving material of the workpiece so as to reduce the unbalance,wherein the material is removed from the rotating workpiece during said measuring or the workpiece is continuously rotated between said measuring and said removing of material.18. The method of wherein the material of the workpiece is removed by a defined or undefined cutting edge to reduce the unbalance.19. The method of wherein the material of the workpiece is removed in a direction radially and/or parallel and/or obliquely to the axis of rotation to reduce the unbalance.20. The method of wherein during said removing of material claim 17 , advancement occurs by way of a relative movement between the workpiece and a machining means.21. The method of wherein said relative movement takes place by way of a movement of the workpiece and/or by way of a movement of the machining means.22. The method of wherein during said removing of material of the workpiece to reduce the unbalance claim 20 , advancement occurs cyclically.23. The method of wherein the workpiece comprises at least one balancing body claim 17 , wherein the material of said balancing body is removed to reduce the unbalance claim 17 , wherein a non-round outer contour of the balancing body is created.24. The method of wherein the workpiece ...

METHOD OF MACHINING A PART

The method can include: assembling the part to be machined to a pallet into an assembly; measuring a centering of the part relative to the pallet; adjusting the centering of the part relative to the pallet based on said measuring; repeating the steps of measuring and adjusting until determining that the part is centered based on said measuring; and mounting the centered assembly to an automatic machining device and machining the part of the centered assembly with the automatic machining device. 1. A method of machining a part , the method comprising:assembling the part to be machined to a pallet into an assembly;rotating the assembly;measuring a centering of the part relative to the pallet during said rotating;if required based on said measuring, adjusting the centering of the part relative to the pallet; andmounting the centered assembly to an automatic machine tool and machining the mounted part with the automatic machine tool.2. The method of wherein the step of assembling the part includes assembling the part to be machined to the pallet via an adapter claim 1 , into the assembly.3. The method of wherein the step of adjusting the centering of the part relative to the pallet includes partially loosening the part relative to the adapter claim 2 , moving the part relative to the adapter based on the measuring claim 2 , and securing the part relative to the adapter.4. The method of wherein the steps of rotating claim 1 , measuring and adjusting are repeated until the part is measured to be centered relative to the pallet within given tolerances.5. The method of wherein the measuring is done by comparing the variations of movement of a locating diameter of the pallet with the variations of movement of a locating diameter of the part during said rotating.6. The method of wherein the locating diameter of the pallet has been previously machined using the automatic machine tool.7. The method of wherein the rotating is done at a set-up station separate from the automatic ...

SECOND HARMONIC RUNOUT SIMULATION HUB

A second harmonic runout simulation hub includes an outer ring, an end plate and a clamping portion fixed to each other. The end plate is at one end of the outer ring, and the clamping portion is detachably fixed to the end plate. The clamping portion includes a first positioning hole for positioning and clamping. The first positioning hole is a cylindrical hole, and the cylindricity of the first positioning hole is smaller than a preset value. The outer circumference of the outer ring includes a measuring cylindrical surface having a preset axial length and a bus parallel to the axis of the first positioning hole, and the circular runout test values of the measuring cylindrical surface are preset second harmonic runout values. 1. A second harmonic runout simulation hub , comprising an outer ring , an end plate and a clamping portion fixed to each other , wherein the end plate is at one end of the outer ring , and the clamping portion is detachably fixed to the end plate; the clamping portion comprises a first positioning hole for positioning and clamping , the first positioning hole is a cylindrical hole , and the cylindricity of the first positioning hole is smaller than a preset value; the outer circumference of the outer ring comprises a measuring cylindrical surface having a preset axial length and a bus parallel to the axis of the first positioning hole , and the circular runout test values of the measuring cylindrical surface are preset second harmonic runout values.2. The second harmonic runout simulation hub according to claim 1 , wherein the clamping portion further comprises a boss assembled with the end plate claim 1 , the end plate comprises a second positioning hole matching the boss claim 1 , and after the boss is mounted into the second positioning hole claim 1 , the parallelism between the bus of the measuring cylindrical surface and the axis of the first positioning hole is smaller than a preset value.3. The second harmonic runout simulation hub ...

DYNAMIC BALANCING TEST AND CORRECTION APPARATUS

A dynamic balancing test and correction apparatus capable of shortening the time required for correcting imbalance in a correction part and improving the entire workflow of the apparatus. 1. A dynamic balancing test and correction apparatus comprising:a dynamic balancing test part that includes a rotation mechanism adapted to rotate a workpiece provided with a rotating shaft around a shaft center of the rotating shaft and measures a direction and an amount of imbalance of the workpiece by rotation of the workpiece; anda correction part that, on a basis of the direction and the amount of the imbalance of the workpiece, the direction and the amount being measured by the dynamic balancing test part, performs hole drilling on paired correction surfaces of the workpiece, the paired correction surface facing a direction orthogonal to the rotating shaft, and thereby corrects the imbalance of the workpiece, wherein the correction part further comprises[N] a support part that, in a resting state, supports the workpiece whose imbalance has been measured by the dynamic balancing test part;paired drilling mechanisms that are for performing the hole drilling on the pared correction surfaces of the workpiece supported by the support part, disposed on both sides of the workpiece, and movable in a direction parallel to the rotating shaft of the workpiece; anda moving mechanism that moves the paired drilling mechanisms respectively independently in mutually orthogonal two directions in a plane orthogonal to the rotating shaft of the workpiece.2. The dynamic balancing test and correction apparatus according to claim 1 , comprising:a workpiece sandwiching mechanism that, when the paired drilling mechanisms perform the hole drilling, fixes the workpiece by sandwiching the paired correction surfaces of the workpiece.3. The dynamic balancing test and correction apparatus according to claim 2 , comprising:a workpiece fixing mechanism that, when the paired drilling mechanisms perform the ...

Washing Machine Appliance Out-of-Balance Detection

A method for operating a washing machine appliance includes flowing a volume of liquid into a tub, agitating articles within the tub for a first period, the tub containing the volume of liquid, and measuring movement of the tub during agitation of the articles within the tub, the tub containing the volume of liquid. The method further includes agitating articles within the tub for a second period when the final measured movement is greater than an out-of-balance movement threshold, the tub containing the volume of liquid. The method further includes draining liquid from the tub when the final measured movement is less than the out-of-balance movement threshold, and spinning a basket after draining liquid from the tub. 1. A method for operating a washing machine appliance , the washing machine appliance having a tub and a basket rotatably mounted within the tub , the basket defining a chamber for receipt of articles for washing , the method comprising:flowing a volume of liquid into the tub;agitating articles within the tub for a first period, the tub containing the volume of liquid;measuring movement of the tub during agitation of the articles within the tub, the tub containing the volume of liquid;agitating articles within the tub for a second period when the final measured movement is greater than an out-of-balance movement threshold, the tub containing the volume of liquid;draining liquid from the tub when the final measured movement is less than the out-of-balance movement threshold; andspinning the basket after draining liquid from the tub.2. The method of claim 1 , wherein the step of measuring movement occurs after agitating articles within the tub for the first period and for an intermediate measurement period.3. The method of claim 1 , wherein the step of measuring movement occurs during agitating articles within the tub for the first period.4. The method of claim 1 , wherein claim 1 , during the step of measuring movement claim 1 , agitating of the ...

Washing Machine Appliance Out-of-Balance Detection

A method for operating a washing machine appliance includes flowing a volume of liquid into a tub, agitating articles within the tub for a first period, the tub containing the volume of liquid, and measuring movement of the tub during agitation of the articles within the tub, the tub containing the volume of liquid. The movement is measured using an accelerometer and a gyroscope. The method further includes agitating articles within the tub for a second period when the final measured movement is greater than an out-of-balance movement threshold, the tub containing the volume of liquid. The method further includes draining liquid from the tub when the final measured movement is less than the out-of-balance movement threshold, and spinning a basket after draining liquid from the tub. 1. A method for operating a washing machine appliance , the washing machine appliance having a tub and a basket rotatably mounted within the tub , the basket defining a chamber for receipt of articles for washing , the method comprising:flowing a volume of liquid into the tub;agitating articles within the tub for a first period, the tub containing the volume of liquid;measuring movement of the tub during agitation of the articles within the tub, the tub containing the volume of liquid, wherein the movement is measured using an accelerometer and a gyroscope;agitating articles within the tub for a second period when the final measured movement is greater than an out-of-balance movement threshold, the tub containing the volume of liquid;draining liquid from the tub when the final measured movement is less than the out-of-balance movement threshold; andspinning the basket after draining liquid from the tub.2. The method of claim 1 , wherein the tub defines an X-axis claim 1 , a Y-axis and a Z-axis which are mutually orthogonal to each other claim 1 , the Z-axis extending along a longitudinal direction and defining a center of the tub claim 1 , and wherein the gyroscope measures movement about ...

Washing Machine Appliance Out-of-Balance Detection

A method for operating a washing machine appliance includes flowing a volume of liquid into the tub, and agitating articles within the tub for a first period, the tub containing the volume of liquid. The method further includes draining a first portion of the volume of liquid from the tub, the first portion less than the volume flowed into the tub, wherein a sum of the first portion and a second portion of the volume of liquid remaining in the tub equals the volume. The method further includes measuring movement of the tub during agitation of the articles within the tub after draining the first portion of the volume of liquid from the tub, wherein the step of measuring movement occurs after agitating articles within the tub for the first period and for an intermediate measurement period.

Washing Machine Appliance Out-of-Balance Detection

A method for operating a washing machine appliance includes flowing a volume of liquid into a tub, and agitating articles within the tub for a first period and using a first agitation profile, the tub containing the volume of liquid. The method further includes measuring movement of the tub during agitation of the articles within the tub, wherein the step of measuring movement occurs after agitating articles within the tub for the first period and for an intermediate measurement period and using an intermediate agitation profile, and wherein the intermediate agitation profile is different from the first agitation profile. The method further includes agitating articles within the tub for a second period when the final measured movement is greater than an out-of-balance movement threshold. The method further includes draining liquid from the tub when the final measured movement is less than the out-of-balance movement threshold. 1. A method for operating a washing machine appliance , the washing machine appliance having a tub and a basket rotatably mounted within the tub , the basket defining a chamber for receipt of articles for washing , the method comprising:flowing a volume of liquid into the tub;agitating articles within the tub for a first period and using a first agitation profile, the tub containing the volume of liquid;measuring movement of the tub during agitation of the articles within the tub, wherein the step of measuring movement occurs after agitating articles within the tub for the first period and for an intermediate measurement period using an intermediate agitation profile, and wherein the intermediate agitation profile is different from the first agitation profile;agitating articles within the tub for a second period when the final measured movement is greater than an out-of-balance movement threshold;draining liquid from the tub when the final measured movement is less than the out-of-balance movement threshold; andspinning the basket after ...

VIBRATION SIGNAL ANALYSIS FOR DETERMINING ROTATIONAL SPEED

Rotational speed of a rotating component is determined using frequency domain vibrational data. A time sequence of vibrational data of the rotating component is sensed and converted to the frequency domain vibrational data. A portion of the frequency domain vibrational data corresponding to an expected rotational speed of the rotating component is identified. A frequency bin index of the frequency domain vibrational data corresponding to a maximum vibration within the portion of the frequency domain vibrational data is identified. The maximum vibration at the identified frequency bin index and vibrations associated with adjacent frequency bin indices are fitted to a model curve. A floating point frequency bin index corresponding to a maximum of the model curve is identified, and the rotational speed of the rotating component is determined based on the frequency bin index corresponding to the maximum of the model curve. 1. A method for determining rotational speed of a rotating component , the method comprising:sensing a time sequence of vibrational data of the rotating component using one or more sensors;converting the time sequence of vibrational data to frequency domain vibrational data;identifying a portion of the frequency domain vibrational data corresponding to an expected rotational speed of the rotating component;identifying a frequency bin index of the frequency domain vibrational data corresponding to a maximum vibration within the portion of the frequency domain vibrational data;fitting the maximum vibration at the identified frequency bin index and vibrations associated with adjacent frequency bin indices to a model curve;identifying a floating point frequency bin index corresponding to a maximum of the model curve; anddetermining the rotational speed of the rotating component based on the frequency bin index corresponding to the maximum of the model curve.2. The method of claim 1 ,wherein sensing the time sequence of the vibrational data of the rotating ...

SHAFT BALANCING SYSTEM AND METHOD OF BALANCING A SHAFT

A method and a system of balancing a shaft for an axle assembly. The method may include depositing a powder composition onto the shaft to produce a balance weight proximate an imbalance location. The powder composition may be propelled by a heated supersonic gas and may plastically deform and mechanically interlock to the shaft. 1. A method of balancing a shaft for an axle assembly , the method comprising:rotating the shaft about an axis;locating an imbalance location of the shaft while the shaft is rotating;stopping rotation of the shaft such that the imbalance location is located directly above the axis;positioning a powder deposition device above the imbalance location; anddepositing a powder composition onto the shaft with the powder deposition device to produce a balance weight proximate the imbalance location such that the powder composition is propelled by a heated supersonic gas and the powder composition plastically deforms and mechanically attaches to the shaft.2. The method of further comprising:stopping deposition of the powder composition;rotating the shaft about the axis; anddetermining whether the shaft has an imbalance.3. The method of further comprising repeating the locating claim 2 , stopping claim 2 , positioning claim 2 , and depositing steps when the shaft has the imbalance.4. The method of further comprising preheating a surface of the shaft proximate the imbalance location before depositing the powder composition.5. The method of wherein the surface of the shaft is heated with the heated supersonic gas that is provided by the powder deposition device without the powder composition.6. The method of wherein the powder composition does not melt when deposited.7. The method of wherein the powder composition is heated by the heated supersonic gas to a temperature that is less than a melting point of the powder composition.8. The method of wherein the shaft is made of a first material and the powder composition is made of a second material that ...

SYSTEM AND METHOD OF MONITORING AN AIR FLOW USING A MILLIMETER-WAVE RADAR SENSOR

In accordance with an embodiment, a method of monitoring an air flow includes performing a plurality of radar measurements using a millimeter-wave radar sensor with a line of sight having a component perpendicular to a direction of an air flow, detecting an object in the air flow based on the plurality of radar measurements, calculating a displacement of the object and a size of the object based on the plurality of radar measurements, estimating a velocity of the object based on the calculated displacement, and calculating a risk metric based on the calculated size of the object and estimated velocity of the object. 1. A method of monitoring an air flow , the method comprising:performing a plurality of radar measurements using a millimeter-wave radar sensor with a line of sight having a component perpendicular to a direction of an air flow;detecting an object in the air flow based on the plurality of radar measurements;calculating a displacement of the object and a size of the object based on the plurality of radar measurements;estimating a velocity of the object based on the calculated displacement; andcalculating a risk metric based on the calculated size of the object and estimated velocity of the object.2. The method of claim 1 , wherein detecting the size of the object comprises:forming a two-dimensional radar image from the plurality of radar measurements, the two-dimensional radar image having a range axis and an azimuth axis;iteratively applying a two-dimensional Gaussian filter to the two-dimensional radar image with a changing filter variance;determining a maximum filter variance at which an increase of a sum amplitude of the Gaussian filtered two-dimensional radar image is below a first threshold to form a variance value; anddetermining the sum amplitude of the Gaussian filtered two-dimensional radar image.3. The method of claim 2 , further comprising:determining size category based on the determined maximum filter variance;determining a radar cross ...

Determining Out of Balance Conditions of a Washing Machine

Systems and methods for determining an out of balance condition of a washing machine are provided. In particular, a plurality of angular positions of a motor associated with a washing machine can be determined. The washing machine can include a wash tub, and a wash basket rotatably mounted within the wash tub. The motor is configured to rotate the wash basket within said wash tub. Data indicative of at least a single phase of motor current being applied to the motor can be obtained while the wash basket rotates. The data can be spatially sampled over at least a subset of the plurality of angular positions of the motor. An out of balance condition associated with the washing machine can be determined based at least in part on the sampled data. 1. A method of detecting an out of balance condition for a washing machine , the method comprising:determining a plurality of angular positions of a motor associated with a washing machine, the washing machine comprising a wash tub, and a wash basket rotatably mounted within the wash tub, wherein the motor is configured to rotate the wash basket within said wash tub;receiving data indicative of at least a single phase of motor current being applied to the motor while the wash basket rotates;spatially sampling the data indicative of the at least a single phase of motor current at each determined angular position of the motor;determining an out of balance condition associated with the washing machine based at least in part on the sampled data.2. The method of claim 1 , wherein receiving data indicative of at least a single phase of motor current comprises receiving data indicative of the at least a single phase of motor current while the wash basket is accelerating or decelerating.3. The method of claim 1 , further comprising selecting a frequency band associated with the motor current based at least in part on a rotational speed of the motor.4. The method of claim 3 , wherein selecting the frequency band associated with the ...

METHODS FOR MONITORING LOAD BALANCE IN WASHING MACHINE APPLIANCES

Methods for monitoring load balance in washing machine appliances, and washing machine appliances, are provided. A method includes accelerating rotation of a basket about a central axis within a tub of the washing machine appliance from a first speed to a second speed greater than the first speed. The method further includes detecting a plurality of speed changes during the accelerating step, and summing absolute values of speed differences for each of the plurality of detected speed changes to obtain an unfolded speed value. 1. A method for monitoring load balance in a washing machine appliance , the method comprising:accelerating rotation of a basket about a central axis within a tub of the washing machine appliance from a first speed to a second speed greater than the first speed;detecting a plurality of speed changes during the accelerating step; andsumming absolute values of speed differences for each of the plurality of detected speed changes to obtain an unfolded speed value.2. The method of claim 1 , further comprising comparing the unfolded speed value to a predetermined threshold speed value.3. The method of claim 2 , further comprising transmitting an output signal when the unfolded speed value is greater than the predetermined threshold speed value claim 2 , the output signal corresponding to an unbalanced load.4. The method of claim 1 , further comprising flowing liquid into the tub.5. The method of claim 4 , further comprising draining liquid from the tub.6. The method of claim 5 , wherein the flowing step and the draining step occur before the accelerating step.7. The method of claim 1 , wherein the accelerating step occurs during a spin cycle of the washing machine appliance.8. The method of claim 1 , wherein the first speed is 0 revolutions per minute.9. The method of claim 1 , wherein the first speed is in the range between approximately 60 and approximately 80 revolutions per minute.10. The method of claim 1 , wherein the second speed is a first ...

METHOD TO DETERMINE THE UNBALANCE OF A ROTOR

A method to measure and determine the unbalance of a rotor, by decoupling the unbalance of the balancing machine and the unbalance of the rotor, which includes the following procedures make the zero angle reference on the rotor or on the balancing machine, select two planes on the rotor, and use a balancing machine to measure the unbalances of the rotor in the two planes, these unbalances are designated as first nominal unbalances. 116.-. (canceled)17. A method to determine the unbalance of a rotor , by decoupling the unbalance of a balancing machine itself and the unbalance of a rotor , comprising:making a zero angle reference on the rotor or on the balancing machine, selecting two planes on the rotor, and using a balancing machine to measure respectively the unbalances of the rotor in the two planes, these unbalances are designated as first nominal unbalances; the first nominal unbalance is a vector sum of the unbalance of the balancing machine and the unbalance of the rotor at the respective plane;rotating the rotor a certain angle with respect to the balancing machine; when the zero angle reference is set on the rotor, remaking the zero angle reference by rotating the same angle in the direction opposite to the rotor's rotating direction; when the zero angle reference is on the balancing machine's drive system, keeping the zero angle reference unchanged;using the balancing machine to measure the unbalances of the rotor in the two selected planes, the unbalances measured are designated as second nominal unbalances; the second nominal unbalance is a vector sum of the unbalance of the balancing machine itself and the unbalance of the rotor which is in the respective plane after being rotated to the certain angle; in the first nominal unbalance and the second nominal unbalance, the unbalance of the machine itself in both of amount and angle is the same, while the rotor's unbalance in amount keeps the same, but the unbalance angle changes with the above rotated angle ...

METHOD AND APPARATUS FOR MONITORING A ROTATABLE MEMBER

A device and associated method for monitoring a rotatable member is described, and includes a target wheel coupled to the rotatable member, and a sensor that is disposed to monitor the target wheel. The sensor is configured to generate a signal associated with rotation of the target wheel. A controller is in communication with the sensor and includes an instruction set that is executable to dynamically monitor the signal generated by the sensor during rotation of the target wheel and determine a magnitude of an airgap between the sensor and the target wheel based upon the signal. A variation in the magnitude of the airgap between the sensor and the target wheel can be determined based upon the signal, and a fault associated with the rotating member can be determined based upon the variation in the magnitude of the airgap. 1. A device for monitoring a rotatable member , comprising: a sensor disposed to monitor the target wheel, wherein the sensor is configured to generate a signal associated with rotation of the target wheel;', dynamically monitor the signal generated by the sensor during rotation of the target wheel;', 'determine a magnitude of an airgap between the sensor and the target wheel based upon the dynamically monitored signal that is generated by the sensor,', 'detect an anomaly in the magnitude of the airgap between the sensor and the target wheel based upon the dynamically monitored signal, and', 'detect a fault associated with the rotating member based upon the anomaly in the magnitude of the airgap., 'a controller, in communication with the sensor, the controller including an instruction set that is executable to], 'a target wheel coupled to the rotatable member;'}2. The device of claim 1 , wherein the sensor comprises a Hall effect sensor.3. The device of claim 1 , wherein the sensor is configured to generate an analog signal that is associated with rotation of the target wheel claim 1 , and wherein the controller is disposed to dynamically monitor ...

Balancing Device, Uniformity Device and Methods for Utilizing the Same

A balancing device, a uniformity device and an apparatus including the balancing device and the uniformity device are disclosed. Each of the balancing device and the uniformity device includes at least one multi-axis transducer. Methods are also disclosed. 159-. (canceled)60. An apparatus , comprising:a fixed-load uniformity device that determines uniformity of a workpiece, wherein the fixed-load uniformity device includes a workpiece-engaging portion; anda computing resource communicatively-coupled to the workpiece-engaging portion by one or more communication conduits,wherein the workpiece-engaging portion includes a central shaft having a proximal end and a distal end and an elongated body that extends between the proximal end and the distal end, wherein the workpiece-engaging portion is coupled to a motor; anda first tire tread-engaging portion opposingly-arranged with respect to a second tire tread-engaging portion, wherein each of the first tire tread-engaging portion and the second tire tread-engaging portion includes a tire tread-engaging member, wherein the first tire tread-engaging portion includes a uniformity-detecting portion connected to the tire tread-engaging member.61. The apparatus according to claim 60 , wherein the uniformity-detecting portion includes a plurality of multi-axis load cells.62. The apparatus according to claim 61 , wherein the plurality of multi-axis load cells includes three or more load cells and wherein information relating to uniformity of the workpiece is provided by the three or more multi-axis load cells and is over-deterministically calculated in terms of at least one group of signals associated with respective axes of at least two axes that are produced by the three or more multi-axis load cells claim 61 , wherein the at least one group of signals includes:a group of two or more torque-moment signals with each torque-moment signal associated with a respective axis of the at least two axes, ora group of two or more force ...

Balancing Device, Uniformity Device and Methods for Utilizing the Same

A balancing device, a uniformity device and an apparatus including the balancing device and the uniformity device are disclosed. Each of the balancing device and the uniformity device includes at least one multi-axis transducer. Methods are also disclosed. 110. An apparatus (′) , comprising:{'b': 10', '10', '18', '20, 'i': u', 'u', 'u, 'a uniformity device () that determines uniformity of a workpiece (TW), wherein the uniformity device () includes: a lower workpiece-engaging portion () that interfaces with an upper workpiece-engaging portion (); and'}{'b': 75', '18', '20', '77, 'i': 'u', 'a computing resource () communicatively-coupled to one or more components of one or both of the lower workpiece-engaging portion () and the upper workpiece-engaging portion () by one or more communication conduits (),'}{'b': 18', '36', '36', '36', '38', '36', '36', '18', '40', '36', '36', '40', '18', '44', '36', '36', '20', '58', '58', '58', '60', '44, 'sub': P', 'D', 'P', 'D', 'P', 'D', 'P', 'D, 'i': 'u', 'wherein the lower workpiece-engaging portion () includes a central shaft () having a proximal end () and a distal end () and an elongated body () that extends between the proximal end () and the distal end (), wherein the lower workpiece-engaging portion () includes a motor (), wherein the proximal end () of the central shaft () is connected to the motor (), wherein the lower workpiece-engaging portion () includes a radially manipulatable workpiece-engaging chuck () that is connected to the distal end () of the central shaft (), wherein the upper workpiece-engaging portion () includes an axially-movable cylinder () having a proximal end () and a distal end () forming a recess () that is sized for receiving the radially inwardly/outwardly manipulatable workpiece-engaging chuck (); and'}{'b': 100', '101', '100', '101', '112', '100', '110', '112', '100', '112', '118', '120', '122', '118', '118', '118, 'i': u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u ...

Method and system for parametric amplification

A system for converting an input oscillation having an input frequency into an output oscillation having an output frequency is disclosed. The system comprises: a controller configured for receiving the input oscillation and responsively generating a multi-component drive signal. A frequency of at least one component of the drive signal is other than two times the input frequency. In some embodiments, a frequency of another component of the drive signal equals about two times the output frequency. The system also comprises an oscillator for generating pump oscillations responsively to the drive signal and applying parametric excitation to the input oscillation at the pump oscillations.

Tire dynamic load radius calculating device and calculating method

A tire dynamic load radius calculating device includes a tire rotation sensor, a drum rotation sensor, a drum rotation angle calculating unit, and a tire dynamic load radius calculating unit. The drum rotation angle calculating unit is configured to calculate a rotation angle of a drum per one rotation of a tire based on signals from the sensors. The tire dynamic load radius calculating unit is configured to calculate a dynamic load radius of the tire based on a formula (R=L/2π), using the rotation angle calculated by the drum rotation angle calculating unit. In this formula, R represents a dynamic load radius of the tire, and L represents a distance traveled by the tire per one rotation of the tire.

Eccentric build-up detection in concrete drums

본 발명은 실질적으로 플라스틱 콘트리트가 없는 믹서 드럼에서 경화된 콘크리트의 빌드업을 검출하기 위한 방법 및 시스템을 제공한다. 한 예시적 방법은, 유압 챠지 측, 배출 측, 바람직하게는 믹서 드럼을 회전시키는 유압 모터의 양 측에, 유압을 사용하여, 일정한 속도로 적어도 두 개의 연속적인 회전을 통해 드럼을 회전시키기 위해 필요한 유압; 및 상기 믹서 드럼의 거동을 모니터링하는 것 및 압력/시간 데이터 커브가 믹서 드럼의 편심 거동을 나타낼 때를 검출하는 것을 수반하며, 이에 의해 트럭에서 경화된 콘크리트 빌드업이 허용불가한 것을 확인하도록 알람 또는 다른 표시가 제공된다. 본 발명의 빌드업 검출 방법 및 시스템은 자동화된 슬럼프 모니터링 시스템의 사용을 필요로 하지 않으며, 바람직한 결과 및 장점을 갖는 이와 같은 시스템들에서 실시될 수 있다. The present invention provides a method and system for detecting build-up of hardened concrete in a mixer drum that is substantially free of plastic concrete. One exemplary method is to use hydraulic pressure, on the hydraulic charge side, on the discharge side, preferably on both sides of a hydraulic motor rotating the mixer drum, to rotate the drum through at least two successive rotations at a constant speed. Hydraulics; and monitoring the behavior of the mixer drum and detecting when a pressure/time data curve indicates the eccentric behavior of the mixer drum, whereby an alarm or Another indication is provided. The buildup detection method and system of the present invention does not require the use of an automated slump monitoring system, and can be practiced in such systems with desirable results and advantages.

混凝土滚筒中的偏心积聚检测

本发明提供用于检测搅拌器滚筒中硬化混凝土积聚的方法和系统，该搅拌器滚筒基本没有塑性混凝土。示例性方法包括：使用在液压充入侧、在排出侧或优选地在转动搅拌器滚筒的液压马达的两侧上的液压压力传感器来监测使得滚筒以恒定速度旋转至少两圈连续旋转所需的液压压力；以及检测压力/时间数据曲线何时指示搅拌器滚筒的偏心行为，由此，提供警报或其他指示以确认卡车中的硬化混凝土积聚是不可接受的。本发明的积聚检测方法和系统不需要使用自动坍落度监测系统，但是可以与这种系统组合来实施以得到有利的结果和优点。

Calibrator for Displacement Sensor using Gravity

The present invention relates to a tester for a displacement sensor, including a reference measuring plate installed on an inclined base and being influenced by gravity; a measuring unit installed opposite to the reference measuring plate and having at least one displacement sensor to measure the distance between the measuring unit and the reference measuring plate; a driving unit for moving the reference measuring plate in a forward or backward direction; an analyzing unit for analyzing a signal from the displacement sensor; and a control unit for outputting a control signal to the driving unit to drive the driving unit. Therefore, it is possible to precisely test the performance of the displacement sensor.

基于围带零阻尼的汽轮机转子系统失稳极限快速预测方法

本公开公开了基于围带零阻尼的汽轮机转子系统失稳极限快速预测方法，通过建立汽轮机转子系统三维几何模型，采用有限元软件的模态分析模块和瞬态响应分析模块，通过系统的最大振动位移响应曲线读出叶片瞬态位移响应的相邻峰值(A 1 、A 2 )，计算在转速和各阶谐波激励载荷下考虑围带摩擦作用的转子系统对数减幅δ、阻尼比ξ，定量计算不同转速下围带阻尼C s 。本发明利用FFT多谐波平衡法，将已有的考虑简谐激励影响的围带阻尼的建模及基于瞬态响应包络线的定量求解方法扩展应用到多频激励，操作流程清晰、计算效率高，为汽轮机转子系统的设计、制造提供理论依据和方法，对确保汽轮机安全运行具有重要理论意义和工程应用价值。

Balance testing device

The present invention provides a device capable of testing the balance of a test target. According to one embodiment of the present invention, the balance testing device comprises: a support unit to support a balance test target; a rotating unit to rotate a test target on the support unit; a measurement unit having a vibration sensing part which senses vibration of the target rotated on the support unit; and a control unit to test the balance of the test target based on a value measured by the measurement unit, and test and show an imbalance position or an imbalance value if an imbalance exists at a specific position. The support unit includes: an axial guide part inserted into the test target to guide rotation of the test target; a pair of axial support members supporting one end and the other end of the axial guide part to support the test target coupled to the axial guide part; an electrically-driven support coupled to a lower portion of the axial support members, in which the vibration sensing part is positioned; and a rotating support to which the rotating unit is coupled. The axial support members include a pair of axial support plates supporting one end of the axial guide part and an axial support part coupled to the electrically driven support and supporting the axial support plates. The outer surfaces of the axial support plates are provided in a round shape.

一种基于电磁应力分析的电机气隙偏心故障检测方法及系统

本发明公开了一种基于电磁应力分析的电机气隙偏心故障检测方法及系统，其通过实时采集待识别诊断电机在预设时间间隔内的径向电磁力信号和不平衡磁拉力信号，分别对其进行快速傅里叶变换，判断电机是否发生气隙偏心故障。在此基础上对两种电磁应力信号进行融合相关谱分析，获得融合相关谱图，利用得到的融合相关谱图可判断电机是否存在偏心故障以及偏心故障的类型，进一步简化故障识别难度，从而解决了传统电流频谱分析方法中故障识别信号单一，且易受电机运行状态影响，故障识别精度不高的问题。

Dynamic balancing apparatus and methods using periodic angular motion

A dynamic balancing apparatus and method using periodic angular motion are provided to implement balancing even when the weight of an object is too large to rotate by selectively applying the amplitude and frequency of angular motion. A dynamic balancing apparatus using periodic angular motion comprises a rotation shaft(10) in which a rotator(1) having rotating unbalanced mass is installed, a periodic angular motion generator(20) installed on the rotation shaft, supports(30) supporting both sides of the rotation shaft, and transducers(40) installed on the respective supports to measure the action force or vibration delivered to the supports by the angular motion of the rotation shaft. The periodic angular motion generator causes the rotation shaft to rotate at the specific angle periodically and vibrate due to the rotating unbalanced mass of the rotator.

用于挠性飞轮动平衡测试的自动夹紧装置

本发明公开了一种用于挠性飞轮动平衡测试的自动夹紧装置。所述自动夹紧装置固定安装在通用硬支撑平衡测试机的振动体上，挠性飞轮安装在自动夹紧装置顶端被自动夹紧装置自动夹紧，自动夹紧装置连接驱动部件，通过驱动部件运行带动自动夹紧装置中的转轴升速进行动平衡测试；自动夹紧装置包括旋转主轴座、拉杆和旋转主轴，旋转主轴座固定在振动体的机架上，拉杆通过直线轴承套在旋转主轴的中心孔中，旋转主轴通过轴承套在旋转主轴座中。本发明仅由径向变形对挠性飞轮施加径向夹紧力，有效的避免了挠性飞轮轴线方向的较大变形，保护了挠性飞轮端面跳动公差，并且提高了动平衡测试精度。

获取转子的不平衡量和平衡机的不平衡量的方法

本发明提供一种获取转子的不平衡量和平衡机的不平衡量的方法，其中，获取转子的不平衡量的方法包括以下步骤：将平衡机上的角度传感器安装在平衡机上的第一位置，测量转子的不平衡量，测量得到测量平面一的第一不平衡量和测量平面二的第一不平衡量；将平衡机上的角度传感器从第一位置移动到平衡机上的第二位置，再次测量转子的不平衡量，得到平面一的第二不平衡量和平面二的第二不平衡量。上述两次不平衡量测量中，转子的不平衡量的大小不变，但不平衡量的角度相对转子上的参考点改变了角度传感器所移动的角度；平衡机本身的不平衡量，大小和角度，都没有发生变化；利用矢量计算，求得转子的不平衡量。测量简单，检测精确。

检控转子固连式磁悬浮旋转关节在线动平衡系统及方法

本发明涉及一种检控转子固连式磁悬浮旋转关节在线动平衡系统，包括：转子系统单元、磁悬浮控制单元、整周期旋转控制单元、恒值电流提取单元和校正质量解算单元；其中，磁悬浮控制单元悬浮转子系统，整周期旋转控制单元控制磁悬浮转子系统绕其几何轴稳定旋转。恒值电流提取单元从磁悬浮控制单元所获取的绕组电流中提取恒值电流成分。校正质量解算单元根据提取恒值电流成分解算平衡转子所需校正质量。

A kind of magnetic suspension rotor high accuracy spot dynamic balance method

本发明涉及一种磁悬浮转子高精度现场动平衡方法，首先，建立磁悬浮转子绕几何轴旋转时校正质量与径向四通道同频控制电流的关系；然后，分别在平衡面A、平衡面B、平衡面A和平衡面B进行三次试重，每次加重后都升速到相同转速，使磁悬浮转子实现绕几何轴旋转的情况下，测量并提取径向四通道的同频控制电流；最后，计算出校正质量的大小和位置，在平衡面A和平衡面B上进行相应的不平衡质量的动平衡操作。本发明提出的现场动平衡方法，可直接对特性参数未知的刚性磁悬浮转子进行动平衡操作，步骤简单、效率高。

Device for the oscillatory support of a rotor bearing for a rotor to be balanced in a balancing machine

Method for balancing a rotor

A method for balancing a rotor (5), particularly a vehicle wheel, comprises:- mounting said rotor on a shaft (4) of a balancer (1) comprising a base (2), a shaft support (3) connected to the base (2), said shaft (4) rotatable along a rotation axis (R) relative to the shaft support (3), one or more elastic elements (6) positioned between the shaft support (3) and the base (2), such that the shaft support (3) is elastically suspended over the base (2), a first IMU (7) fixedly positioned on the shaft support (3) and configured to measure a first (a_z) and/or a second (a_y) and/or a third accelerations (a_x), and/or a first (ω_z) and/or a second (ω_y) and/or a third (ω_x) angular speeds along three axes (x, y, z) of a reference frame integrally moving with the first IMU (7), and to generate signals representative of the same, a second IMU (8) fixedly positioned on the shaft (4) at a radial distance from the shaft rotation axis (R), and configured to measure a first (a_z) and/or a second (a_y) and/or a third accelerations (a_x), and/or a first (ω_z) and/or a second (ω_y) and/or a third (ω_x) angular speeds along three axes (x, y, z) of a reference frame integrally moving with the second IMU (8), and to generate signals representative of the same;- rotating the shaft (4);- receiving the signals coming from the first (7) and the second (8) IMUs;- determining from said signals coming from the first (7) and the second (8) IMUs an estimated unbalance severity (m̂) and an estimated unbalance angular position (φ̂) in the rotor (5).

Pumped storage runner static balance offset milling fine counterweight process method

本发明公开一种抽水蓄能转轮静平衡偏铣精配重工艺方法。方法是转轮在重点位置去重力矩等于不平衡力矩。抽蓄转轮具有体积小、转速高等特点，其配重难点在于小体积转轮配重难以达到高精度、低残余不平衡力矩要求，因此如何实现高精度平衡配重是抽蓄转轮的配重难点。通过偏铣配重可实现配重高精度要求，其关键步骤是根据不平衡力矩精确计算出转轮偏铣轮廓尺寸并数控偏铣加工。相比目前采用的钻孔去重和偏车去重方法，偏铣配重方法能够避免钻孔去重影响转轮强度的缺点；同样能够避免偏车去重精度低、加工周期长的缺点。本发明具有易于推广、周期短、加工效率高、配重精度高的特点。

Device for aligning a workpiece in a mass-centring device

在一种用于使工件在平衡定心装置上定向的装置中规定，上法兰和下法兰在初始位置上同心地围绕平衡定心装置的平衡轴的轴线布置，其中，上法兰包括用于夹紧工件的夹紧件的接口，并且下法兰包括用于将装置固定在平衡轴上的固定件的接口。至少两个弹簧布置在上法兰和下法兰之间，使得上法兰在初始位置中在轴向和径向上仅支承在两个弹簧件上。处在初始位置上的上法兰能够借助反向于弹簧件指向的力相对于下法兰运动到偏心的位置中。包括压力弹簧和活塞的移动装置布置在上法兰和下法兰之间，使得在夹紧位置上，活塞通过压力弹簧的弹簧力能够与上法兰的固定件的支承件相贴靠，从而上法兰通过活塞能够向着下法兰被夹紧并且能够在偏心位置上止动。

Device for aligning a workpiece in a mass-centring device

Disclosed is a device for aligning a workpiece in a mass-centering device, in which in an initial position an upper flange ( 1 ) and a lower flange ( 2 ) are arranged concentrically around an axis ( 3 ) of a balancing spindle of the mass-centering device, with the upper flange ( 1 ) comprising an interface ( 4 ) for clamping means to clamp the workpiece, and the lower flange ( 2 ) an interface ( 5 ) for fastening means to fasten the device to the balancing spindle. At least two spring elements ( 22, 23 ) reside between the upper and the lower flange ( 1, 2 ), such that in the initial position the upper flange ( 1 ) takes support axially and radially exclusively on the two spring elements ( 22, 23 ). In the initial position, the upper flange ( 1 ) is movable relative to the lower flange ( 2 ) into an eccentric position by a force acting in opposition to the spring elements ( 22, 23 ). A displacement device comprising a compression spring ( 9 ) and a piston ( 13 ) is arranged between the upper and the lower flange ( 1, 2 ) such that in a clamping position the piston ( 13 ) is movable, by the force of the compression spring ( 9 ), into engagement with a supporting element ( 20 ) of a fastening element ( 21 ) of the upper flange ( 1 ), so that the piston ( 13 ) enables the upper flange ( 1 ) to be clamped against the lower flange ( 2 ) and to be arrested in the eccentric position.

Device for orienting workpieces on a balancing and centering device

在一种用于使工件在平衡定心装置上定向的装置中规定，上法兰和下法兰在初始位置上同心地围绕平衡定心装置的平衡轴的轴线布置，其中，上法兰包括用于夹紧工件的夹紧件的接口，并且下法兰包括用于将装置固定在平衡轴上的固定件的接口。至少两个弹簧布置在上法兰和下法兰之间，使得上法兰在初始位置中在轴向和径向上仅支承在两个弹簧件上。处在初始位置上的上法兰能够借助反向于弹簧件指向的力相对于下法兰运动到偏心的位置中。包括压力弹簧和活塞的移动装置布置在上法兰和下法兰之间，使得在夹紧位置上，活塞通过压力弹簧的弹簧力能够与上法兰的固定件的支承件相贴靠，从而上法兰通过活塞能够向着下法兰被夹紧并且能够在偏心位置上止动。

Balance testing device

The present invention provides a device for inspecting balance of an inspection target. According to one embodiment of the present invention, the present invention comprises: a support unit supporting the balance inspection target; a rotary unit rotating the inspection target on the support unit; a measurement unit having a vibration sensing unit sensing vibration of the target rotated on the support unit; and a control unit inspecting the balance of the inspection target based on a value measured in the measurement unit and inspecting and displaying an imbalance position or an imbalance value when there is imbalance of a specific position.

Apparatus for measuring uniformity of tire

본 발명은 타이어 균일성 측정장치에 관한 것으로, 보다 상세하게는 완성 타이어의 진동 및 소음 발생여부를 평가하기 위하여 타이어의 균일성을 측정하기 위한 타이어 균일성 측정장치에 관한 것이다. 본 발명에 따른 타이어 균일성 측정장치는, 휠이 조립된 완성 타이어의 균일성 측정을 위한 타이어 균일성 측정장치에 있어서, 메인프레임과; 상기 메인프레임의 일측에 설치되어 타이어의 위치를 정렬시키는 정렬유닛과; 상기 메인프레임의 일측에 설치되어 상기 정렬유닛에 의해 위치 정렬된 타이어가 이송되어 안착되면 타이어 휠의 내면을 지지하면서 회전하는 클램프 회전유닛과; 상기 메인프레임에 승강 가능하도록 설치되어 상기 클램프 회전유닛에 의해 지지된 타이어 휠의 상부면을 가압 지지하는 승강지지유닛과; 상기 메인프레임의 일측에 설치되어 타이어의 표면을 가압하여 부하의 변화를 측정하는 균일성 측정유닛과; 상기 메인프레임의 타측에 설치되어 균일성 측정이 완료된 타이어를 이송시키는 피딩유닛을 포함하는 것을 특징으로 한다.

Aluminum alloy wheel hub positioning fixture

本发明提供了一种铝合金轮毂定位夹具。所述的铝合金轮毂定位夹具，采用上下两个梯形金属锥套，锥套的外表面粘贴橡胶护套，下锥套与轮毂的中心孔接触，上锥套与轮毂的冒口接触；下锥套安装在空心轴上，空心轴中间有金属管。工作时，轮毂通过中心孔定位安装在下锥套上，上锥套在气缸的作用下与轮毂冒口垂直接触，此时下锥套、轮毂中心孔至冒口段、上锥套之间形成一个封闭空间，通过空心轴内的金属管对封闭空间抽真空，在大气压力的作用下，使得上、下锥套紧紧地作用在轮毂上，使得夹紧力足够克服轮毂高速旋转过程中的离心力，使得轮毂不至于脱落。

Power control type mechanical excitor

불평형질량의 원심력을 이용한 가진기의 힘 크기를 가진기 작동중에 조절이 가능하게한 힘 조절형 기계식 가진기에 관한 것으로 콘트롤러 1을 이용하여 속도제어모터 2를 구동하면 서로 맞물린 기어 3,3'에 의해서 두개의 축 4,4'가 서로 반대방향으로 회전하고, 각각의 회전축 4,4'에 매달린 불평형 질량 5,5'로부터 원심력이 발생하며, 불평형 질량 5,5'와 회전축 4,4'간의 연결봉 6,6'의 위치를 조절하는 이동판 7을 위치제어모터 8에 연결된 이송장치 9로 움직여 불평형 질량 5,5'와 회전축 4,4'간의 거리를 축 회전중에 조절하여 원심력의 크기를 제어함을 특징으로 하는 힘 조절형 기계식 가진기. This is a force-controlled mechanical exciter that can be adjusted during operation of a vibrator with unbalanced centrifugal force. When the speed control motor 2 is driven using the controller 1, the gears 3 and 3 'are engaged. The two axes 4,4 'rotate in opposite directions, and a centrifugal force is generated from the unbalanced mass 5,5' hanging on each of the rotating shafts 4,4 ', and the connecting rod between the unbalanced mass 5,5' and the shaft 4,4 ' 6,6 'move the moving plate 7 to the feeder 9 connected to the position control motor 8 to control the centrifugal force by adjusting the distance between the unbalanced mass 5,5' and the rotational axis 4,4 'during shaft rotation. Force adjustable mechanical vibrator characterized in that.

Methods and drivetrain test benches for detecting imbalance and/or misalignment

본 발명은 테스트 벤치(1) 상에서 작동 중인 드라이브트레인(3)의 적어도 하나의 샤프트 어셈블리(2; 4a, 4b, 4c)의 불균형 및/또는 오정렬을 감지하기 위한 방법(100) 및 드라이브트레인 테스트 벤치(1)에 관한 것으로, 제1 압전력 센서(4)가 테스트 벤치(1)의 로드 머신(14a, 14b) 및 테스트 벤치(1)의 드라이브트레인(3)의 드라이브 머신(2) 사이의 동력 전달에 의해 생성되고(101) 샤프트 어셈블리(5; 5a, 5b)에 의해 전달되는 힘의 흐름에 배치되어 있고, 샤프트 어셈블리(5; 5a, 5b)의 회전축(D)으로부터 섹션화되고 바람직하게는 회전축(D)에 적어도 실질적으로 수직인 제1 평면(E1)에서 및/또는 제1 평면(E1)에 수직으로 제1 힘 센서(4a, 4b, 4c)에 의해 제1 힘 측정을 수행하고(102-1), 불균형을 감지하기 위해 상기 제1 힘 측정의 적어도 하나의 측정값 추이 및 상기 측정값 추이와 관련된 샤프트 어셈블리(5; 5a, 5b)에 대한 회전각 결정의 값 추이를 분석하고(103a) 및/또는 샤프트 어셈블리(5; 5a, 5b)의 오정렬을 감지하기 위해 상기 제1 힘 측정의 측정값 추이를 분석한다(103b).

Equipment for detecting static balance of propeller and error compensation method thereof

本发明公开了一种用于螺旋桨静平衡检测的设备及其误差补偿方法，通过后期对螺旋桨中心与检测平台中心之间的偏心距进行补偿来消除偏心距对最终检测结果不平衡质量的影响，可以极大的提高螺旋桨静平衡检测的精度，使得最终误差处于一个极小的范围。

Rotating tire balance measurement device

The present invention relates to a rotary tire balance measuring device. In the rotary tire balance measuring device comprising a load cell, a mounting plate, a rotating part, and a tire chucking device, the rotating part comprises: a rotary plate on which the tire chucking device is mounted; three or more rotors mounted along the upper edge of the mounting plate and having a rotary ball bearing for guiding the smooth rotation of the rotary plate and a cam follower bearing for maintaining the constant pressure while being in contact with the rotary plate; and a pressing unit selectively mounted on the rotors and pressing the cam follower bearing toward the rotary plate to be attached.

Aluminium alloy wheel hub positioning fixture

本发明提供了一种铝合金轮毂定位夹具。所述的铝合金轮毂定位夹具，采用上下两个梯形金属锥套，锥套的外表面粘贴橡胶护套，下锥套与轮毂的中心孔接触，上锥套与轮毂的冒口接触；下锥套安装在空心轴上，空心轴中间有金属管。工作时，轮毂通过中心孔定位安装在下锥套上，上锥套在气缸的作用下与轮毂冒口垂直接触，此时下锥套、轮毂中心孔至冒口段、上锥套之间形成一个封闭空间，通过空心轴内的金属管对封闭空间抽真空，在大气压力的作用下，使得上、下锥套紧紧地作用在轮毂上，使得夹紧力足够克服轮毂高速旋转过程中的离心力，使得轮毂不至于脱落。

Dynamic balancing machine control method for detecting motion state of motor rotor

本发明提供一种检测电机转子运动状态的动平衡机控制方法，包括：对第一驱动装置的输出轴的转速进行监测，控制第一驱动装置带动输出轴以及电机转子达到第一预设速度；基于上拉力采集模块检测第一滑动固定件的上第一点以及上第二点的第一拉力和第二拉力；基于下压力采集模块检测第一滑动固定件的下第一点以及下第二点的第一压力、第二压力；基于所述第一拉力与第二拉力之间的第一拉力差、第一压力与第二压力之间的第一压力差生成水平压力差，基于水平压力差生成水平的不平衡量；基于上拉力采集模块检测上第三点的第三拉力，基于所述下压力采集模块检测下第三点的第三压力；基于水平的不平衡量、第三拉力以及第三压力生成竖直不平衡量。

Crack healing performance monitoring system for self-healing repair mortar based on IoT

본 발명은 콘크리트 구조물에 보수층을 구성함에 있어 자기치유 보수 모르타르를 적용하는 경우, IoT(Internet of Things) 사물인터넷 기술과 무선통신 서비스 기술을 접목하여 콘크리트 구조물의 균열은 물론 균열로 인한 자기치유 보수 모르타르의 자기치유 여부를 모니터링할 수 있는 IoT기반 자기치유 보수 모르타르의 균열치유성능 모니터링시스템에 관한 것으로, 상세하게는 자기치유 보수 모르타르 층이 형성된 콘크리트 구조물에 장착되어 콘크리트 구조물의 온도와 습도를 계측하고 계측한 계측데이터를 무선통신망을 통해 송신하는 하나 이상의 감지부; 상기 감지부에서 송신하는 계측데이터를 수신하고 이를 기설정된 기준값과 비교 분석하여 상기 콘크리트 구조물의 균열과 균열에 따른 상기 자기치유 보수 모르타르 층의 치유여부를 판단하는 분석서버; 및 상기 분석서버에서 처리되는 판단결과를 전달받고 이를 모니터링하는 모니터링부;를 포함하는 것이 특징이다. In the present invention, when a self-healing repair mortar is applied in constructing a repair layer in a concrete structure, the self-healing repair mortar due to cracks as well as cracks in the concrete structure is applied by combining IoT (Internet of Things) IoT technology and wireless communication service technology. It relates to an IoT-based self-healing repair mortar crack healing performance monitoring system that can monitor whether self-healing and repair mortar is installed.In detail, it is mounted on a concrete structure with a self-healing repair mortar layer to measure and measure the temperature and humidity of the concrete structure. One or more sensing units for transmitting one measurement data through a wireless communication network; An analysis server that receives the measurement data transmitted from the sensing unit and compares and analyzes it with a preset reference value to determine whether or not the self-healing repair mortar layer is cured according to cracks and cracks in the concrete structure; And a monitoring unit that receives and monitors the determination result processed by the analysis server.

Online weight removing tool for dynamic balancing machine

本发明公开了一种动平衡机在线去重工装，该去重工装用于转子的校动平衡，转子可转动地支撑于动平衡原机上，包括钻孔去重单元、升降单元、吸铁屑单元以及设有驱动机构和夹紧机构的夹持单元，所述升降单元设于动平衡原机内侧，两钻孔去重单元对称置于动平衡原机的左右两侧，夹持单元置于动平衡原机的后侧，吸铁屑单元中的吸尘口置于钻孔去重单元中钻头的一侧。本发明综合钻床的优点，同时综合只上下一次动平衡搬运的优点，加上自动吸铁屑装置的工作，使整个工艺过程的生产效率、安全、现场洁净度及工作强度得至有效控制，从而满足汽车新能源高性能电机的嗓音与振动要求。

A kind of semi-umbrella type pump turbine inclined cutout rotor field spider out-of-balance force method for testing and analyzing

本发明公开了一种半伞式水泵水轮机斜切式转子支架不平衡力测试分析方法，在半伞式水泵水轮机斜切式转子支架斜筋上布置无线应变传感器，且各传感器所在斜筋上的位置相同，通过无线应变传感器实时监测各斜筋的应力状态。当出现不平衡时，无线应变传感器所在位置处的监测点应力状态发生改变，通过建立该点应力计算的理论公式，进而识别不平衡力的大小与位置。该方法可用于机组运行状态的实时监测，为机组动平衡及提高机组的安全与稳定运行提供理论支撑。

Method for vertical dynamic balancing of workpiece

FIELD: manufacturing technology. SUBSTANCE: invention relates to a balancing equipment and can be used for static and dynamic balancing of a workpiece equipped with its own rotary drive to rotate relative to the vertical axis. Method comprises placing the workpiece by means of its rotary support by using a three-point support system on a fixed intermediate platform mounted on a fixed support base, rotating the workpiece by means of its own rotary drive of the rotary support of the balanced workpiece and measuring the dynamic responses between the intermediate platform and the support base by means of three fixed supports with force-measuring devices. In the embodiment, when measuring dynamic responses, force and load measuring strain gauges are used as force-measuring devices. EFFECT: technical result is increased efficiency and accuracy of the balancing process. 1 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 674 423 C2 (51) МПК G01M 1/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G01M 1/16 (2006.01) (21)(22) Заявка: 2017116468, 11.05.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: 10.12.2018 (43) Дата публикации заявки: 13.11.2018 Бюл. № (56) Список документов, цитированных в отчете о поиске: Технология сборки и испытаний 32 2 6 7 4 4 2 3 Адрес для переписки: 192012, Санкт-Петербург, пр. Обуховской Обороны, 120, лит. ЕЧ, Акционерное общество "Конструкторское бюро специального машиностроения" космических аппаратов: Учебник для высших технических учебных заведений / И.Т. Беляков, И.А. Зернов, Е.Г. Антонов и др.; Под общ. ред. И.Т. Белякова и И.А. Зернова. - М: Машиностроение, 1990. - С.211213. RU 2539810 C1, 27.01.2015. RU 2382999 C1, 27.02.2010. Справочник по балансировке / М.Е. Левит, Ю.А. Агафонов, (см. прод.) (54) СПОСОБ ВЕРТИКАЛЬНОЙ ДИНАМИЧЕСКОЙ БАЛАНСИРОВКИ ИЗДЕЛИЯ (57) Реферат: Изобретение относится к балансировочной опорно-поворотного устройства балансируемого ...

A kind of rotor-support-foundation system dynamic balancing encourages recognition methods

一种转子系统动平衡激励识别方法,进行实验测定，采集转轴上电涡流传感器的输出，得到转子振动响应的实测值；电机停转，采集转子系统的几何参数和材料参数，建立转子系统的有限元模型；由有限元仿真，得到转子振动响应的仿真值；设置转子系统动平衡激励识别目标函数和最优化模型；采用最优化算法进行迭代求解，得到转子系统的初始不平衡量、轴承刚度和阻尼参数。本发明方法利用仿真结果与实验结果进行优化，可以基于部分实验数据通过具有良好鲁棒性和识别精度的转子系统动平衡激励进行有效识别，易在工程实际中运用，受设备结果和测试条件限制小。

Non-trial-weight transient high-speed dynamic balancing method based on flexible rotor acceleration response information

本发明提供了一种基于柔性转子加速响应信息的无试重瞬态高速动平衡方法。首先，采用传递矩阵法建立转子系统瞬态运动方程，并通过Newmark积分法计算得到瞬态运动响应数据；然后，利用利用载荷识别和模态坐标转换结合方法，计算得到不平衡激振力；接着，基于辅助角公式结合不平衡激振力特性，计算转子不平衡量。本发明结合发动机转子实际运行特点，不需添加试重，只需获得转子系统加速起动过程的瞬态响应数据，便可通过数学方法完成对转子的平衡，计算效率高、平衡精度高，是一种精确、高效的无试重瞬态动平衡方法，可推广应用到工程实际。

Method for balancing weight of rotary table by reading speed curve of encoder

本发明涉及一种通过读取编码器速度曲线为转台配重的方法，该方法如下：驱动电机按设定的转速运转带动转动轴及其前端的配重旋转；读取编码器码值，获得编码器码值‑时间曲线；根据曲线上波峰和波谷的开始位置和趋平稳位置对应的码值判断配重不平所在区域；根据波峰和波谷的幅值尝试选择偏心配重的重量并根据配重不平所在区域将其配置在转动轴的前端；重复上述过程，直至编码器码值‑时间曲线在初始上升后趋于稳定平顺，完成转台配平。本发明简单易操作，适用于大型转台，尤其是带有横滚方向转动的大型转台的配重。