WO2018092217A1 - Dynamic balance tester - Google Patents

Dynamic balance tester Download PDF

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Publication number
WO2018092217A1
WO2018092217A1 PCT/JP2016/083989 JP2016083989W WO2018092217A1 WO 2018092217 A1 WO2018092217 A1 WO 2018092217A1 JP 2016083989 W JP2016083989 W JP 2016083989W WO 2018092217 A1 WO2018092217 A1 WO 2018092217A1
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Prior art keywords
unit
vibration
balancing unit
dynamic balance
base part
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PCT/JP2016/083989
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French (fr)
Japanese (ja)
Inventor
京極　義明
俊文 北之防
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株式会社長浜製作所
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Priority to PCT/JP2016/083989 priority Critical patent/WO2018092217A1/en
Publication of WO2018092217A1 publication Critical patent/WO2018092217A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/14—Determining imbalance
    • G01M1/16—Determining imbalance by oscillating or rotating the body to be tested

Definitions

  • This invention relates to a dynamic balance testing machine.
  • the unbalance of the DUT is measured by rotating the fixed DUT at a predetermined speed.
  • the conventional DUT does not have a movable part that moves relative to other parts of the DUT, so if any part of the DUT is fixed to the dynamic balance testing machine, Thus, the unbalance of the device under test can be accurately measured.
  • a new device under test having a base part and a plurality of weight members arranged side by side in the circumferential direction around the axis center line of the base part and held with play by the base part.
  • Each weight member can move relative to the base part in the radial direction and the circumferential direction with respect to the axial center line, and can change its posture.
  • a vehicle such as a torque converter with a pendulum and a dual mass flywheel.
  • Such a DUT is actually used so as to rotate around the axis center line with the axis center line extending horizontally. At that time, lubricating oil is provided between each weight member and the base part. Intervene.
  • the test object is set in a state where the axial center line extends vertically and no lubricating oil is present, so that each weight member comes into contact with the base part from the upper side by its own weight. When the DUT is rotated for unbalance measurement in this state, each weight member cannot freely move due to friction with the base part even if centrifugal force acts.
  • the present invention has been made to solve such a problem, and is a dynamic balance test capable of accurately measuring the unbalance of a test object having a base part and a plurality of weight members held with play by the base part.
  • the purpose is to provide a machine.
  • the present invention provides a base part (3) and a plurality of weight members (line) arranged in a circumferential direction (S) around an axial center line (J) of the base part and held with play by the base part ( 4) a dynamic balance testing machine (1) for a device under test (2) having the base part in a state in which the axis center line extends vertically in the device under test.
  • the balancing includes a balancing unit (11) having a spindle (16) to be driven and rotated, and a support part (15) for supporting the spindle so as to vibrate, and a main body frame (10) for supporting the balancing unit.
  • the unit is a dynamic balance testing machine provided with a vibration unit (17) that vibrates the weight member of the device under test.
  • the alphanumeric characters in parentheses indicate corresponding components in the embodiments described later. The same applies hereinafter.
  • the base component in a state where the axial center line extends vertically in the DUT is supported on the spindle supported so as to be able to vibrate by the support portion. Fixed.
  • the spindle in this state is driven and rotated about the vertical axis, the unbalance of the device under test is measured from the vibration caused by the non-uniform distribution of mass with respect to the axis center line of the device under test.
  • each weight member can be easily separated from the base part by vibrating each weight member by the vibration unit of the balancing unit prior to the unbalance measurement.
  • each weight member moves freely by centrifugal force without being hindered by friction with the base part under the condition where the centrifugal force works, and at a uniform stable position between the weight members.
  • This stable posture means a posture in a state where the device under test is steadily rotating when traveling while being incorporated in a vehicle.
  • the influence of the position and posture of each weight member in the unbalance measurement is small. Therefore, it is possible to accurately measure the unbalance of the DUT having the base part and the plurality of weight members held with play by the base part.
  • the present invention is characterized in that the excitation unit vibrates the weight member of the device under test in the vertical direction.
  • each weight member of the DUT is more easily separated from the base part by being vibrated in the vertical direction, so that each weight member positively takes a stable posture at a stable position. Can promote. Thereby, since the influence by the position and posture of each weight member in the unbalance measurement is further reduced, the unbalance of the device under test can be measured more accurately.
  • the present invention is characterized in that the excitation unit vibrates a weight member of a device under test in the circumferential direction.
  • each weight member of the DUT is more easily separated from the base part by being vibrated in the circumferential direction, so that each weight member positively takes a stable posture at a stable position. Can promote. Thereby, since the influence by the position and posture of each weight member in the unbalance measurement is further reduced, the unbalance of the device under test can be measured more accurately.
  • the vibration process for vibrating the weight member by the vibration unit and the measurement process for measuring the unbalance of the test object in a state where the vibration unit is stopped after the vibration process, It is characterized in that it is continuously executed in a state where the spindle is rotated.
  • each weight member of the DUT is vibrated in the vibration processing, and the weight members are kept in the stable position and the stable posture in the measurement processing after the vibration processing while maintaining the same state. It is possible to accurately measure the unbalance of the specimen.
  • the present invention includes an elastic member (12) that elastically connects the balancing unit and the main body frame, and a lock portion (13) that locks the position of the balancing unit, and during the excitation process
  • the balancing unit is unlocked so that the balancing unit can be vibrated, and the position of the balancing unit is locked by the locking unit during the measurement process.
  • each weight member since the entire balancing unit vibrates during the vibration process, it is ensured that each weight member is in a stable position at a stable position away from the base part even in a vibration unit that can be given only a small vibration. Each weight member can be vibrated. During the measurement process after the excitation process, the locked balancing unit does not vibrate so as not to affect the unbalance measurement, so that the unbalance of the DUT can be accurately measured.
  • FIG. 1 is a plan view of a device under test.
  • 2 is a cross-sectional view taken along line AA in FIG.
  • FIG. 3 is a front view of the dynamic balance testing machine according to the embodiment of the present invention.
  • FIG. 4 is a front view of the dynamic balance testing machine during the measurement process.
  • FIG. 5 is a front view of a dynamic balance testing machine according to a modification.
  • FIG. 1 is a plan view of a device under test 2 that is an object of unbalance measurement in a dynamic balance testing machine 1 (see FIG. 3) according to an embodiment of the present invention.
  • the DUT 2 includes, for example, a disk-shaped base part 3 and a plurality of (for example, six) weight members 4 arranged side by side in the circumferential direction S around the axial center line J of the base part 3.
  • a through hole 3A serving as a reference inner diameter portion is formed at the center of the base part 3, and a guide groove 3B extending in the circumferential direction S and penetrating through the base part 3 is formed in the circumferential direction S at the outer peripheral part of the base part 3.
  • Are formed side by side for example, two for each weight member 4).
  • each weight member 4 is a pair of weights arranged so as to sandwich a portion of the base part 3 where any one of the guide grooves 3B is formed.
  • the plate 5 and, for example, two pin-shaped coupling portions 6 that connect the pair of weight plates 5 to each other are included.
  • each coupling portion 6 is inserted one by one with play with respect to the guide groove 3 ⁇ / b> B at the same position in the circumferential direction S in the base part 3.
  • each weight member 4 is held with play by the base part 3.
  • each weight member 4 is virtually moved by moving relative to the base part 3 in the radial direction R and the circumferential direction S with respect to the axial center line J or changing its posture.
  • the pendulum moves around the movable fulcrum.
  • the DUT 2 rotates around the axial center line J with the axial center line J extending horizontally.
  • each weight member 4 is brought into a stable position by the centrifugal force accompanying the rotation. Reach and take a stable posture.
  • the center portion in the circumferential direction S that is, the center of gravity 4A (see FIG. 1) is at the outermost maximum radial position in the radial direction R within a range in which it can move relative to the base part 3.
  • the distance in the radial direction R between each of the both end portions 4B (see FIG. 1) in the circumferential direction S and the axial center line J is kept substantially equal.
  • the dynamic balance testing machine 1 includes a main body frame 10 fixed to the floor surface Y, a balancing unit 11 supported by the main body frame 10, an elastic member 12, a lock portion 13, and the like. including.
  • the main body frame 10 stands up from the floor surface Y, and a horizontal portion 10A is provided at an upper end portion thereof.
  • the balancing unit 11 includes a support portion 15, a spindle 16, and a vibration portion 17.
  • the support portion 15 is formed in a flat plate shape, for example, and is disposed directly above the horizontal portion 10 ⁇ / b> A of the main body frame 10.
  • the spindle 16 is formed in a cylindrical shape having a vertical axis, and is supported by a spring-like elastic support portion 18 provided on the support portion 15 so as to be able to vibrate.
  • the dynamic balance testing machine 1 includes a drive unit (not shown) such as an electric motor, and the spindle 16 is driven and rotated around a vertical axis by a belt drive or the like by the drive unit.
  • the vibration unit 17 is fixed to the support unit 15, for example.
  • an arbitrary electric vibration exciter such as a vibration motor can be used. When the vibration unit 17 is activated, vertical vibration is generated.
  • the elastic member 12 is, for example, rubber or a spring, and is arranged to be extendable between the horizontal portion 10A of the main body frame 10 and the support portion 15 of the balancing unit 11, so that the main body frame 10 and the balancing unit 11 are connected. It is elastically connected.
  • the lock unit 13 is for locking the position of the balancing unit 11 and releasing the lock, and is fixed to the main body frame 10.
  • the lock portion 13 is, for example, a hydraulic cylinder, and includes a rod 13A that protrudes upward and passes through the support portion 15 and can be slid vertically.
  • a plurality of lock portions 13 may be provided so as to be positioned on both the left and right sides of the main body frame 10, or only one lock portion 13 may be provided on one side of the main body frame 10.
  • the operations of the drive unit (not shown), the vibration unit 17 and the lock unit 13 in the dynamic balance testing machine 1 are controlled by a control unit 20 configured by a microcomputer or the like.
  • the DUT 2 When measuring the unbalance of the DUT 2 described above, the DUT 2 is set on the upper end of the spindle 16. At the upper end portion of the spindle 16, for example, a holding portion 16 ⁇ / b> A for clamping the DUT 2 in the through hole 3 ⁇ / b> A (see FIG. 1) of the base component 3 is provided. In the DUT 2, the base part 3 is fixed to the spindle 16 by the holding portion 16 ⁇ / b> A in a state where the axial center line J extends vertically and coincides with the vertical axis of the spindle 16.
  • the pair of weight plates 5 in each weight member 4 sandwich the base component 3 from above and below, and the upper weight plate 5 is in contact with the upper surface of the base component 3.
  • the flange portion 13 ⁇ / b> B at the upper end of the rod 13 ⁇ / b> A is separated upward from the support portion 15 of the balancing unit 11, so that the locking of the balancing unit 11 by the lock portion 13 is released. Therefore, the balancing unit 11 can vibrate up and down as long as the support portion 15 does not contact the upper flange portion 13B and the lower horizontal portion 10A.
  • the vibration unit 17 is operated for a predetermined time to generate vibration. This vibration is transmitted to the device under test 2 via the support portion 15 and the spindle 16, whereby each weight member 4 in the device under test 2 is vibrated in the vertical direction. After the vibration process, the vibration unit 17 is stopped. Then, in a state where the support portion 15 of the balancing unit 11 is locked to the main body frame 10 and the spindle 16 is continuously rotated (see FIG. 4), the measurement process for measuring the unbalance of the DUT 2 is continuously executed.
  • the vibration of the spindle 16 rotating integrally with the device under test 2 is detected by, for example, a vibration detector (not shown) fixed to the main body frame 10, and the vibration of the device under test 2 is detected based on this vibration.
  • the balance is measured.
  • each weight member 4 of the device under test 2 is vibrated by the vibration unit 17 in the vibration processing prior to the measurement processing.
  • each weight member 4 is easily separated from the base part 3, so that friction between each weight member 4 and the base part 3 is reduced.
  • each weight member 4 moves freely by the centrifugal force without being hindered by the friction with the base part 3 under the condition where the centrifugal force is applied, and is uniform and stable between the weight members 4. Take a consistent and stable posture in position.
  • each weight member 4 of the DUT 2 is more easily separated from the base part 3 by being vibrated in the vertical direction, so that each weight member 4 positively takes a stable posture at a stable position. Can promote. Thereby, since the influence by the position and posture of each weight member 4 in the unbalance measurement is further reduced, the unbalance of the DUT 2 can be measured more accurately.
  • each weight member 4 is separated from the base part 3. It can vibrate reliably until it moves so as to take a stable posture at the stable position.
  • the lock unit 13 causes the rod 13A to descend so that the flange unit 13B suppresses the support unit 15 of the balancing unit 11 so as not to vibrate and closely contacts the horizontal unit 10A of the main body frame 10. Therefore, the upper and lower positions of the balancing unit 11 are locked (see FIG. 4). Thereby, during the measurement process, the locked balancing unit 11 does not vibrate so as not to affect the unbalance measurement, so that the unbalance of the DUT 2 can be accurately measured.
  • the number of rotations of the spindle 16 may be the same during the vibration processing and during the measurement processing.
  • each weight member 4 positively takes a stable posture at a stable position in the vibration processing.
  • the rotation speed during the excitation process may be higher than the rotation speed during the measurement process.
  • each weight member 4 may be vibrated in the horizontal direction (including the circumferential direction S and the radial direction R) by the vibration unit 17 instead of the vertical direction.
  • belt 27 is moved by electric motor 26 provided separately from the drive unit described above (a member denoted by reference numeral 25 in FIG. 5).
  • a configuration in which an alternating torque is applied to the spindle 16 can be given.
  • the balancing unit 11 does not have to be elastically supported by the main body frame 10, and in this case, the elastic member 12 and the lock portion 13 (see FIG. 3 and FIG. 3). 4) may be omitted, and the support portion 15 of the balancing unit 11 may be always fixed to the main body frame 10.

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  • General Physics & Mathematics (AREA)
  • Testing Of Balance (AREA)

Abstract

Provided is a dynamic balance tester capable of accurately measuring the imbalance of an object for testing having a base part and a plurality of weight members held with play by the base part. The dynamic balance tester 1 includes a balancing unit 11 and a main body frame 10 for supporting the balancing unit 11. The balancing unit 11 has a spindle 16 to which the base part 3 is fixed in a state where a shaft axis J extends vertically through the object for testing 2, and the spindle 16 is driven so as to rotate around the vertical axis. The balancing unit 11 also has a support part 15 for vibratably supporting the spindle 16. The balancing unit 11 is provided with a vibration unit 17 for vibrating the weight members 4 of the object for testing 2.

Description

動釣合い試験機Dynamic balance testing machine
　この発明は、動釣合い試験機に関する。 This invention relates to a dynamic balance testing machine.
　動釣合い試験機では、固定された被試験体を所定速度で回転させることによって、被試験体の不釣合いが測定される。従来の被試験体には、被試験体における他の部分に対して相対的に動く可動部分が存在しないことが一般的なので、被試験体におけるいずれかの箇所を動釣合い試験機に固定すれば、被試験体の不釣合いを正確に測定することができる。 In the dynamic balance testing machine, the unbalance of the DUT is measured by rotating the fixed DUT at a predetermined speed. In general, the conventional DUT does not have a movable part that moves relative to other parts of the DUT, so if any part of the DUT is fixed to the dynamic balance testing machine, Thus, the unbalance of the device under test can be accurately measured.
　ベース部品と、ベース部品の軸中心線まわりの周方向に並んで配置され、ベース部品によって遊びを持って保持された複数の錘部材とを有する新たな被試験体が想定される。各錘部材は、軸中心線を基準とした径方向および周方向のそれぞれへ向けてベース部品に対して相対移動したり自身の姿勢を変えたりすることができる。このような被試験体の一例として、振り子付きのトルクコンバーターやデュアルマスフライホイール等といった車両等の部品が挙げられる。 Suppose a new device under test having a base part and a plurality of weight members arranged side by side in the circumferential direction around the axis center line of the base part and held with play by the base part. Each weight member can move relative to the base part in the radial direction and the circumferential direction with respect to the axial center line, and can change its posture. As an example of such an object to be tested, there are parts such as a vehicle such as a torque converter with a pendulum and a dual mass flywheel.
　このような被試験体は、実際には軸中心線が水平に延びた状態で軸中心線まわりに回転するように使用され、その際、各錘部材とベース部品との間には潤滑油が介在する。しかし、被試験体は、動釣合い試験機では、軸中心線が垂直に延びて潤滑油が存在しない状態でセットされるので、各錘部材が自重によってベース部品に上側から接触する。この状態で不釣合い測定のために被試験体を回転させると、各錘部材は、遠心力が作用しても、ベース部品との間の摩擦によって自由に移動できない。そのため、被試験体がセットされた時点における錘部材の位置および姿勢が、実際使用時の被試験体における各錘部材の安定位置および安定姿勢とは異なり、錘部材毎にバラバラであれば、そのままの状態で被試験体が回転しながら不釣合い測定が行われる。これでは、錘部材の影響によって、被試験体の回転の度に異なった不釣り合いが生じるので、被試験体の不釣合いを正確に測定することが困難である。 Such a DUT is actually used so as to rotate around the axis center line with the axis center line extending horizontally. At that time, lubricating oil is provided between each weight member and the base part. Intervene. However, in the dynamic balance testing machine, the test object is set in a state where the axial center line extends vertically and no lubricating oil is present, so that each weight member comes into contact with the base part from the upper side by its own weight. When the DUT is rotated for unbalance measurement in this state, each weight member cannot freely move due to friction with the base part even if centrifugal force acts. Therefore, if the position and orientation of the weight member at the time when the DUT is set are different from the stable position and posture of each weight member in the DUT at the time of actual use, In this state, the unbalance measurement is performed while the DUT rotates. In this case, due to the influence of the weight member, different imbalances are generated each time the DUT is rotated, so that it is difficult to accurately measure the unbalance of the DUT.
　この発明は、かかる問題を解決するためになされたもので、ベース部品とベース部品によって遊びを持って保持された複数の錘部材とを有する被試験体の不釣合いを正確に測定できる動釣合い試験機を提供することを目的とする。 The present invention has been made to solve such a problem, and is a dynamic balance test capable of accurately measuring the unbalance of a test object having a base part and a plurality of weight members held with play by the base part. The purpose is to provide a machine.
　本発明は、ベース部品（３）と、前記ベース部品の軸中心線（Ｊ）まわりの周方向（Ｓ）に並んで配置され、前記ベース部品によって遊びを持って保持された複数の錘部材（４）とを有する被試験体（２）のための動釣合い試験機（１）であって、被試験体において軸中心線が垂直に延びた状態における前記ベース部品が固定され、垂直軸線まわりに駆動回転されるスピンドル（１６）と、前記スピンドルを振動可能に支持する支持部（１５）とを有するバランシングユニット（１１）と、前記バランシングユニットを支持する本体フレーム（１０）とを含み、前記バランシングユニットには、被試験体の錘部材を振動させる加振部（１７）が設けられる、動釣合い試験機である。なお、括弧内の英数字は、後述の実施形態における対応構成要素などを表す。以下、この項において同じ。 The present invention provides a base part (3) and a plurality of weight members (line) arranged in a circumferential direction (S) around an axial center line (J) of the base part and held with play by the base part ( 4) a dynamic balance testing machine (1) for a device under test (2) having the base part in a state in which the axis center line extends vertically in the device under test. The balancing includes a balancing unit (11) having a spindle (16) to be driven and rotated, and a support part (15) for supporting the spindle so as to vibrate, and a main body frame (10) for supporting the balancing unit. The unit is a dynamic balance testing machine provided with a vibration unit (17) that vibrates the weight member of the device under test. The alphanumeric characters in parentheses indicate corresponding components in the embodiments described later. The same applies hereinafter.
　この構成によれば、動釣合い試験機において本体フレームによって支持されたバランシングユニットでは、支持部によって振動可能に支持されたスピンドルに、被試験体において軸中心線が垂直に延びた状態におけるベース部品が固定される。この状態のスピンドルが垂直軸線まわりに駆動回転されたときに被試験体の軸中心線に関する質量の不均一分布によって生じた振動から、被試験体の不釣り合いが測定される。被試験体を回転させて、或る回転速度に到達した後、不釣り合い測定に先立って、バランシングユニットの加振部によって各錘部材を振動させておけば、各錘部材がベース部品から離れやすくなることによって、各錘部材とベース部品との間の摩擦が低減される。この状態では、各錘部材は、遠心力の働く条件のもとで、ベース部品との間の摩擦によって妨げられることなく、遠心力によって自由に移動し、錘部材間で均一な安定位置にて、揃った安定姿勢をとる。この安定姿勢とは、被試験体が車両に組み込まれて走行するときに定常的に回転している状態での姿勢を意味する。この状態で被試験体が回転して不釣合い測定が行われると、不釣合い測定における各錘部材の位置および姿勢による影響が少ない。そのため、ベース部品とベース部品によって遊びを持って保持された複数の錘部材とを有する被試験体の不釣合いを正確に測定できる。 According to this configuration, in the balancing unit supported by the main body frame in the dynamic balance testing machine, the base component in a state where the axial center line extends vertically in the DUT is supported on the spindle supported so as to be able to vibrate by the support portion. Fixed. When the spindle in this state is driven and rotated about the vertical axis, the unbalance of the device under test is measured from the vibration caused by the non-uniform distribution of mass with respect to the axis center line of the device under test. After rotating the device under test and reaching a certain rotational speed, each weight member can be easily separated from the base part by vibrating each weight member by the vibration unit of the balancing unit prior to the unbalance measurement. Thus, the friction between each weight member and the base part is reduced. In this state, each weight member moves freely by centrifugal force without being hindered by friction with the base part under the condition where the centrifugal force works, and at a uniform stable position between the weight members. , Take a uniform and stable posture. This stable posture means a posture in a state where the device under test is steadily rotating when traveling while being incorporated in a vehicle. When the DUT rotates and the unbalance measurement is performed in this state, the influence of the position and posture of each weight member in the unbalance measurement is small. Therefore, it is possible to accurately measure the unbalance of the DUT having the base part and the plurality of weight members held with play by the base part.
　また、本発明は、前記加振部は、被試験体の錘部材を垂直方向に振動させることを特徴とする。 Further, the present invention is characterized in that the excitation unit vibrates the weight member of the device under test in the vertical direction.
　この構成によれば、被試験体の各錘部材は、垂直方向に振動させられることによって、ベース部品から一層離れやすくなるので、各錘部材が積極的に安定位置にて安定姿勢をとるように促進できる。これにより、不釣合い測定における各錘部材の位置および姿勢による影響が一層少なくなるので、被試験体の不釣合いを一層正確に測定することができる。 According to this configuration, each weight member of the DUT is more easily separated from the base part by being vibrated in the vertical direction, so that each weight member positively takes a stable posture at a stable position. Can promote. Thereby, since the influence by the position and posture of each weight member in the unbalance measurement is further reduced, the unbalance of the device under test can be measured more accurately.
　また、本発明は、前記加振部は、被試験体の錘部材を前記周方向に振動させることを特徴とする。 Further, the present invention is characterized in that the excitation unit vibrates a weight member of a device under test in the circumferential direction.
　この構成によれば、被試験体の各錘部材は、周方向に振動させられることによって、ベース部品から一層離れやすくなるので、各錘部材が積極的に安定位置にて安定姿勢をとるように促進できる。これにより、不釣合い測定における各錘部材の位置および姿勢による影響が一層少なくなるので、被試験体の不釣合いを一層正確に測定することができる。 According to this configuration, each weight member of the DUT is more easily separated from the base part by being vibrated in the circumferential direction, so that each weight member positively takes a stable posture at a stable position. Can promote. Thereby, since the influence by the position and posture of each weight member in the unbalance measurement is further reduced, the unbalance of the device under test can be measured more accurately.
　また、本発明は、前記加振部によって錘部材を振動させる加振処理と、前記加振処理後に前記加振部が停止した状態で被試験体の不釣り合いを測定する測定処理とが、前記スピンドルを回転させた状態において連続して実行されることを特徴とする。 Further, according to the present invention, the vibration process for vibrating the weight member by the vibration unit, and the measurement process for measuring the unbalance of the test object in a state where the vibration unit is stopped after the vibration process, It is characterized in that it is continuously executed in a state where the spindle is rotated.
　この構成によれば、加振処理において被試験体の各錘部材を振動させることによって各錘部材を安定位置および安定姿勢にて揃えた状態を保ったまま、加振処理後の測定処理において被試験体の不釣合いを正確に測定することができる。 According to this configuration, each weight member of the DUT is vibrated in the vibration processing, and the weight members are kept in the stable position and the stable posture in the measurement processing after the vibration processing while maintaining the same state. It is possible to accurately measure the unbalance of the specimen.
　また、本発明は、前記バランシングユニットと前記本体フレームとを弾性的に連結する弾性部材（１２）と、前記バランシングユニットの位置をロックするロック部（１３）とを含み、前記加振処理中では前記ロック部によるロックが解除されて前記バランシングユニットが振動可能であり、前記測定処理中では前記ロック部によって前記バランシングユニットの位置がロックされることを特徴とする。 Further, the present invention includes an elastic member (12) that elastically connects the balancing unit and the main body frame, and a lock portion (13) that locks the position of the balancing unit, and during the excitation process The balancing unit is unlocked so that the balancing unit can be vibrated, and the position of the balancing unit is locked by the locking unit during the measurement process.
　この構成によれば、加振処理中ではバランシングユニット全体が振動するので、小さな振動しか与えられない加振部でも、各錘部材がベース部品から離れて安定位置にて安定姿勢をとるように確実に各錘部材を振動させることができる。加振処理後の測定処理中では、ロックされたバランシングユニットが不釣合い測定に影響を与えないように振動しないので、被試験体の不釣合いを正確に測定することができる。 According to this configuration, since the entire balancing unit vibrates during the vibration process, it is ensured that each weight member is in a stable position at a stable position away from the base part even in a vibration unit that can be given only a small vibration. Each weight member can be vibrated. During the measurement process after the excitation process, the locked balancing unit does not vibrate so as not to affect the unbalance measurement, so that the unbalance of the DUT can be accurately measured.
図１は、被試験体の平面図である。FIG. 1 is a plan view of a device under test. 図２は、図１のＡ－Ａ矢視断面図である。2 is a cross-sectional view taken along line AA in FIG. 図３は、この発明の一実施形態に係る動釣合い試験機の正面図である。FIG. 3 is a front view of the dynamic balance testing machine according to the embodiment of the present invention. 図４は、測定処理中の動釣合い試験機の正面図である。FIG. 4 is a front view of the dynamic balance testing machine during the measurement process. 図５は、変形例に係る動釣合い試験機の正面図である。FIG. 5 is a front view of a dynamic balance testing machine according to a modification.
　以下では、この発明の実施形態について詳細に説明をする。図１は、この発明の一実施形態に係る動釣合い試験機１（図３参照）での不釣合い測定の対象となる被試験体２の平面図である。被試験体２は、例えば円盤状のベース部品３と、ベース部品３の軸中心線Ｊまわりの周方向Ｓに並んで配置された複数（例えば６つ）の錘部材４とを有する。ベース部品３の中心部には、基準内径部としての貫通穴３Ａが形成され、ベース部品３の外周部には、周方向Ｓに延びてベース部品３を貫通したガイド溝３Ｂが、周方向Ｓに並んで複数（例えば１つの錘部材４に対して２つずつ）形成されている。 Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is a plan view of a device under test 2 that is an object of unbalance measurement in a dynamic balance testing machine 1 (see FIG. 3) according to an embodiment of the present invention. The DUT 2 includes, for example, a disk-shaped base part 3 and a plurality of (for example, six) weight members 4 arranged side by side in the circumferential direction S around the axial center line J of the base part 3. A through hole 3A serving as a reference inner diameter portion is formed at the center of the base part 3, and a guide groove 3B extending in the circumferential direction S and penetrating through the base part 3 is formed in the circumferential direction S at the outer peripheral part of the base part 3. Are formed side by side (for example, two for each weight member 4).
　図１のＡ－Ａ矢視断面図である図２も参照して、各錘部材４は、ベース部品３においていずれかのガイド溝３Ｂが形成された部分を挟むように配置された一対の錘板５と、一対の錘板５同士を連結する例えば２つのピン状の結合部６とを含む。各錘部材４において、各結合部６は、ベース部品３において周方向Ｓで同じ位置にあるガイド溝３Ｂに対して遊びを持って１つずつ挿通されている。これにより、各錘部材４は、ベース部品３によって遊びを持って保持されている。この場合における各錘部材４は、軸中心線Ｊを基準とした径方向Ｒおよび周方向Ｓのそれぞれへ向けてベース部品３に対して相対移動したり自身の姿勢を変えたりすることによって、仮想の可動支点を中心とした振り子運動をする。 Referring also to FIG. 2 which is a cross-sectional view taken along the line AA in FIG. 1, each weight member 4 is a pair of weights arranged so as to sandwich a portion of the base part 3 where any one of the guide grooves 3B is formed. The plate 5 and, for example, two pin-shaped coupling portions 6 that connect the pair of weight plates 5 to each other are included. In each weight member 4, each coupling portion 6 is inserted one by one with play with respect to the guide groove 3 </ b> B at the same position in the circumferential direction S in the base part 3. Thereby, each weight member 4 is held with play by the base part 3. In this case, each weight member 4 is virtually moved by moving relative to the base part 3 in the radial direction R and the circumferential direction S with respect to the axial center line J or changing its posture. The pendulum moves around the movable fulcrum.
　実際使用時の被試験体２は、軸中心線Ｊが水平に延びた状態で軸中心線Ｊまわりに回転するので、その際、各錘部材４は、回転に伴う遠心力によって、安定位置に到達し、安定姿勢をとる。安定位置にある錘部材４では、周方向Ｓにおける中央部つまり重心４Ａ（図１参照）が、ベース部品３に対して相対移動できる範囲内において径方向Ｒの最も外側の最大半径位置にある。安定姿勢をとった錘部材４では、周方向Ｓにおける両端部４Ｂ（図１参照）のそれぞれと軸中心線Ｊとの径方向Ｒの間隔が略均等に保たれる。 In actual use, the DUT 2 rotates around the axial center line J with the axial center line J extending horizontally. At this time, each weight member 4 is brought into a stable position by the centrifugal force accompanying the rotation. Reach and take a stable posture. In the weight member 4 in the stable position, the center portion in the circumferential direction S, that is, the center of gravity 4A (see FIG. 1) is at the outermost maximum radial position in the radial direction R within a range in which it can move relative to the base part 3. In the weight member 4 in the stable posture, the distance in the radial direction R between each of the both end portions 4B (see FIG. 1) in the circumferential direction S and the axial center line J is kept substantially equal.
　図３の正面図を参照して、動釣合い試験機１は、床面Ｙに固定される本体フレーム１０と、本体フレーム１０によって支持されるバランシングユニット１１と、弾性部材１２と、ロック部１３とを含む。本体フレーム１０は、床面Ｙから立ち上がっていて、その上端部には、水平部１０Ａが設けられている。 With reference to the front view of FIG. 3, the dynamic balance testing machine 1 includes a main body frame 10 fixed to the floor surface Y, a balancing unit 11 supported by the main body frame 10, an elastic member 12, a lock portion 13, and the like. including. The main body frame 10 stands up from the floor surface Y, and a horizontal portion 10A is provided at an upper end portion thereof.
　バランシングユニット１１は、支持部１５と、スピンドル１６と、加振部１７とを有する。支持部１５は、例えば平板状に形成され、本体フレーム１０の水平部１０Ａの真上に配置される。スピンドル１６は、垂直軸線を有する円柱状に形成され、支持部１５に設けられたバネ状の弾性支持部１８によって振動可能に支持される。動釣合い試験機１は、電動モータ等の駆動部（図示せず）を含み、スピンドル１６は、この駆動部によるベルトドライブ等によって垂直軸線まわりに駆動回転される。加振部１７は、例えば支持部１５に固定される。加振部１７として、振動モータ等の任意の電動の加振機を用いることができる。加振部１７が作動すると、垂直方向の振動が発生する。 The balancing unit 11 includes a support portion 15, a spindle 16, and a vibration portion 17. The support portion 15 is formed in a flat plate shape, for example, and is disposed directly above the horizontal portion 10 </ b> A of the main body frame 10. The spindle 16 is formed in a cylindrical shape having a vertical axis, and is supported by a spring-like elastic support portion 18 provided on the support portion 15 so as to be able to vibrate. The dynamic balance testing machine 1 includes a drive unit (not shown) such as an electric motor, and the spindle 16 is driven and rotated around a vertical axis by a belt drive or the like by the drive unit. The vibration unit 17 is fixed to the support unit 15, for example. As the vibration unit 17, an arbitrary electric vibration exciter such as a vibration motor can be used. When the vibration unit 17 is activated, vertical vibration is generated.
　弾性部材１２は、例えばゴムやバネであり、本体フレーム１０の水平部１０Ａと、バランシングユニット１１の支持部１５との間で伸縮可能に配置されることによって、本体フレーム１０とバランシングユニット１１とを弾性的に連結している。 The elastic member 12 is, for example, rubber or a spring, and is arranged to be extendable between the horizontal portion 10A of the main body frame 10 and the support portion 15 of the balancing unit 11, so that the main body frame 10 and the balancing unit 11 are connected. It is elastically connected.
　ロック部１３は、バランシングユニット１１の位置をロックしたり、そのロックを解除したりするためのものであり、本体フレーム１０に固定される。ロック部１３は、例えば油圧シリンダであり、上側へ突出して支持部１５を貫通して垂直にスライド可能なロッド１３Ａを有する。ロック部１３は、本体フレーム１０の左右両側に位置するように複数設けられてもよいし、本体フレーム１０の片側に１つだけ設けられてもよい。 The lock unit 13 is for locking the position of the balancing unit 11 and releasing the lock, and is fixed to the main body frame 10. The lock portion 13 is, for example, a hydraulic cylinder, and includes a rod 13A that protrudes upward and passes through the support portion 15 and can be slid vertically. A plurality of lock portions 13 may be provided so as to be positioned on both the left and right sides of the main body frame 10, or only one lock portion 13 may be provided on one side of the main body frame 10.
　動釣合い試験機１における前述した駆動部（図示せず）、加振部１７およびロック部１３の動作は、マイクロコンピューター等によって構成された制御部２０によって制御される。 The operations of the drive unit (not shown), the vibration unit 17 and the lock unit 13 in the dynamic balance testing machine 1 are controlled by a control unit 20 configured by a microcomputer or the like.
　前述した被試験体２の不釣り合いを測定する場合には、被試験体２が、スピンドル１６の上端部にセットされる。スピンドル１６の上端部には、例えばベース部品３の貫通穴３Ａ（図１参照）において被試験体２をクランプするための保持部１６Ａが設けられている。被試験体２では、ベース部品３が、その軸中心線Ｊが垂直に延びてスピンドル１６の垂直軸線と一致した状態で、保持部１６Ａによってスピンドル１６に固定される。このとき、被試験体２では、各錘部材４における一対の錘板５がベース部品３を上下から挟んだ状態にあり、上側の錘板５がベース部品３の上面に接触している。このとき、ロック部１３では、ロッド１３Ａの上端部のフランジ部１３Ｂが、バランシングユニット１１の支持部１５から上側へ離れているので、ロック部１３によるバランシングユニット１１のロックが解除されている。そのため、支持部１５が上側のフランジ部１３Ｂと下側の水平部１０Ａとに接触しない範囲で、バランシングユニット１１が上下に振動可能である。 When measuring the unbalance of the DUT 2 described above, the DUT 2 is set on the upper end of the spindle 16. At the upper end portion of the spindle 16, for example, a holding portion 16 </ b> A for clamping the DUT 2 in the through hole 3 </ b> A (see FIG. 1) of the base component 3 is provided. In the DUT 2, the base part 3 is fixed to the spindle 16 by the holding portion 16 </ b> A in a state where the axial center line J extends vertically and coincides with the vertical axis of the spindle 16. At this time, in the DUT 2, the pair of weight plates 5 in each weight member 4 sandwich the base component 3 from above and below, and the upper weight plate 5 is in contact with the upper surface of the base component 3. At this time, in the lock portion 13, the flange portion 13 </ b> B at the upper end of the rod 13 </ b> A is separated upward from the support portion 15 of the balancing unit 11, so that the locking of the balancing unit 11 by the lock portion 13 is released. Therefore, the balancing unit 11 can vibrate up and down as long as the support portion 15 does not contact the upper flange portion 13B and the lower horizontal portion 10A.
　次に、スピンドル１６の回転が開始される。スピンドル１６の回転が開始されて、或る回転速度に到達した後の初期段階では、加振処理として、加振部１７が所定時間作動されて振動を発生する。この振動が、支持部１５およびスピンドル１６を介して被試験体２に伝達されることにより、被試験体２における各錘部材４が垂直方向に振動させられる。加振処理の後に、加振部１７が停止される。そして、バランシングユニット１１の支持部１５が本体フレーム１０にロックされ、引き続きスピンドル１６が回転された状態（図４参照）において、被試験体２の不釣り合いを測定する測定処理が連続して実行される。測定処理では、被試験体２と一体回転中のスピンドル１６の振動が、例えば本体フレーム１０に固定された振動検出器（図示せず）によって検出され、この振動に基いて被試験体２の不釣り合いが測定される。 Next, the rotation of the spindle 16 is started. In an initial stage after the rotation of the spindle 16 is started and reaches a certain rotational speed, as the vibration processing, the vibration unit 17 is operated for a predetermined time to generate vibration. This vibration is transmitted to the device under test 2 via the support portion 15 and the spindle 16, whereby each weight member 4 in the device under test 2 is vibrated in the vertical direction. After the vibration process, the vibration unit 17 is stopped. Then, in a state where the support portion 15 of the balancing unit 11 is locked to the main body frame 10 and the spindle 16 is continuously rotated (see FIG. 4), the measurement process for measuring the unbalance of the DUT 2 is continuously executed. The In the measurement process, the vibration of the spindle 16 rotating integrally with the device under test 2 is detected by, for example, a vibration detector (not shown) fixed to the main body frame 10, and the vibration of the device under test 2 is detected based on this vibration. The balance is measured.
　以上のように、被試験体２を回転させて、或る回転速度に到達した後、測定処理に先立った加振処理において、加振部１７によって被試験体２の各錘部材４を振動させておけば、各錘部材４がベース部品３から離れやすくなることによって、各錘部材４とベース部品３との間の摩擦が低減される。この状態では、各錘部材４は、遠心力の働く条件のもとで、ベース部品３との間の摩擦によって妨げられることなく、遠心力によって自由に移動し、錘部材４間で均一な安定位置にて、揃った安定姿勢をとる。このように各錘部材４を安定位置および安定姿勢にて揃えた状態を保ったまま、加振処理の後に続く測定処理において不釣合い測定が行われると、不釣合い測定における各錘部材４の位置および姿勢による影響が少ない。そのため、被試験体２の不釣合いを正確に測定することができる。 As described above, after rotating the device under test 2 to reach a certain rotational speed, each weight member 4 of the device under test 2 is vibrated by the vibration unit 17 in the vibration processing prior to the measurement processing. In this case, each weight member 4 is easily separated from the base part 3, so that friction between each weight member 4 and the base part 3 is reduced. In this state, each weight member 4 moves freely by the centrifugal force without being hindered by the friction with the base part 3 under the condition where the centrifugal force is applied, and is uniform and stable between the weight members 4. Take a consistent and stable posture in position. When unbalance measurement is performed in the measurement process subsequent to the vibration process while the weight members 4 are kept in a stable position and a stable posture in this manner, the position of each weight member 4 in the unbalance measurement is determined. And the effect of posture is small. Therefore, the unbalance of the device under test 2 can be accurately measured.
　特に、被試験体２の各錘部材４は、垂直方向に振動させられることによって、ベース部品３から一層離れやすくなるので、各錘部材４が積極的に安定位置にて安定姿勢をとるように促進できる。これにより、不釣合い測定における各錘部材４の位置および姿勢による影響が一層少なくなるので、被試験体２の不釣合いを一層正確に測定することができる。 In particular, each weight member 4 of the DUT 2 is more easily separated from the base part 3 by being vibrated in the vertical direction, so that each weight member 4 positively takes a stable posture at a stable position. Can promote. Thereby, since the influence by the position and posture of each weight member 4 in the unbalance measurement is further reduced, the unbalance of the DUT 2 can be measured more accurately.
　また、加振処理中では、ロック部１３によるロックが解除されたバランシングユニット１１全体が振動するので、小さな振動しか与えられない加振部１７でも、各錘部材４を、ベース部品３から離れて安定位置にて安定姿勢をとるように移動するまで確実に振動させることができる。 Further, during the vibration process, the entire balancing unit 11 unlocked by the lock unit 13 vibrates. Therefore, even in the vibration unit 17 to which only a small vibration is applied, each weight member 4 is separated from the base part 3. It can vibrate reliably until it moves so as to take a stable posture at the stable position.
　加振処理後の測定処理の開始時には、ロック部１３では、ロッド１３Ａが下降してフランジ部１３Ｂがバランシングユニット１１の支持部１５を振動しないように抑え込んで本体フレーム１０の水平部１０Ａに密着させているので、バランシングユニット１１の上下の位置がロックされる（図４参照）。これにより、測定処理中では、ロックされたバランシングユニット１１が不釣合い測定に影響を与えないように振動しないので、被試験体２の不釣合いを正確に測定することができる。 At the start of the measurement process after the vibration process, the lock unit 13 causes the rod 13A to descend so that the flange unit 13B suppresses the support unit 15 of the balancing unit 11 so as not to vibrate and closely contacts the horizontal unit 10A of the main body frame 10. Therefore, the upper and lower positions of the balancing unit 11 are locked (see FIG. 4). Thereby, during the measurement process, the locked balancing unit 11 does not vibrate so as not to affect the unbalance measurement, so that the unbalance of the DUT 2 can be accurately measured.
　測定処理における不釣り合いの測定が完了すると、スピンドル１６の保持部１６Ａによるクランプが解除されて、被試験体２がスピンドル１６から取り外される。 When the measurement of unbalance in the measurement process is completed, the clamp by the holding portion 16A of the spindle 16 is released and the device under test 2 is removed from the spindle 16.
　この発明は、以上に説明した実施形態に限定されるものではなく、請求項に記載の範囲内において種々の変更が可能である。 The present invention is not limited to the embodiment described above, and various modifications can be made within the scope of the claims.
　例えば、加振処理中と測定処理中とで、スピンドル１６の回転数が同じであってもよいし、例えば、加振処理において各錘部材４が積極的に安定位置にて安定姿勢をとるように、加振処理中の回転数が測定処理中の回転数より高くてもよい。 For example, the number of rotations of the spindle 16 may be the same during the vibration processing and during the measurement processing. For example, each weight member 4 positively takes a stable posture at a stable position in the vibration processing. In addition, the rotation speed during the excitation process may be higher than the rotation speed during the measurement process.
　また、各錘部材４は、加振部１７によって、垂直方向でなく、水平方向（周方向Ｓや径方向Ｒも含む）に加振されてもよい。図５を参照して、錘部材４を周方向Ｓに加振するために、前述した駆動部（図５において符号２５を付した部材）とは別に設けられた電動モータ２６によって、ベルト２７を介してスピンドル１６に交番トルクを与える構成が挙げられる。以上のように水平方向に各錘部材４を振動させる場合には、バランシングユニット１１が本体フレーム１０によって弾性支持されなくてもよく、この場合には、弾性部材１２およびロック部１３（図３および図４参照）を省略できて、バランシングユニット１１の支持部１５が本体フレーム１０に常に固定されてもよい。 Further, each weight member 4 may be vibrated in the horizontal direction (including the circumferential direction S and the radial direction R) by the vibration unit 17 instead of the vertical direction. Referring to FIG. 5, in order to vibrate weight member 4 in circumferential direction S, belt 27 is moved by electric motor 26 provided separately from the drive unit described above (a member denoted by reference numeral 25 in FIG. 5). For example, a configuration in which an alternating torque is applied to the spindle 16 can be given. When the weight members 4 are vibrated in the horizontal direction as described above, the balancing unit 11 does not have to be elastically supported by the main body frame 10, and in this case, the elastic member 12 and the lock portion 13 (see FIG. 3 and FIG. 3). 4) may be omitted, and the support portion 15 of the balancing unit 11 may be always fixed to the main body frame 10.
　１　　動釣合い試験機
　２　　被試験体
　３　　ベース部品
　４　　錘部品
　１０　本体フレーム
　１１　バランシングユニット
　１２　弾性部材
　１３　ロック部
　１５　支持部
　１６　スピンドル
　１７　加振部
　Ｊ　　軸中心線
　Ｓ　　周方向 DESCRIPTION OF SYMBOLS 1 Dynamic balance testing machine 2 Test object 3 Base part 4 Weight part 10 Main body frame 11 Balancing unit 12 Elastic member 13 Lock part 15 Support part 16 Spindle 17 Excitation part J Axis centerline S Circumferential direction

Claims (5)

  1. 　ベース部品と、前記ベース部品の軸中心線まわりの周方向に並んで配置され、前記ベース部品によって遊びを持って保持された複数の錘部材とを有する被試験体のための動釣合い試験機であって、
    　被試験体において軸中心線が垂直に延びた状態における前記ベース部品が固定され、垂直軸線まわりに駆動回転されるスピンドルと、前記スピンドルを振動可能に支持する支持部とを有するバランシングユニットと、
    　前記バランシングユニットを支持する本体フレームとを含み、
    　前記バランシングユニットには、被試験体の錘部材を振動させる加振部が設けられる、動釣合い試験機。     A dynamic balance testing machine for a test object having a base part and a plurality of weight members arranged side by side in a circumferential direction around an axial center line of the base part and held with play by the base part There,
    A balancing unit having a spindle in which the base component in a state in which the axial center line extends vertically in the device under test is fixed and driven and rotated around the vertical axis; and a support portion that supports the spindle so as to vibrate;
    A main body frame that supports the balancing unit;
    A dynamic balance testing machine, wherein the balancing unit is provided with a vibration unit that vibrates a weight member of a device under test.
  2. 　前記加振部は、被試験体の錘部材を垂直方向に振動させる、請求項１に記載の動釣合い試験機。 The dynamic balance testing machine according to claim 1, wherein the excitation unit vibrates the weight member of the device under test in the vertical direction.
  3. 　前記加振部は、被試験体の錘部材を前記周方向に振動させる、請求項１に記載の動釣合い試験機。 2. The dynamic balance testing machine according to claim 1, wherein the excitation unit vibrates a weight member of a device under test in the circumferential direction.
  4. 　前記加振部によって錘部材を振動させる加振処理と、前記加振処理後に前記加振部が停止した状態で被試験体の不釣り合いを測定する測定処理とが、前記スピンドルを回転させた状態において連続して実行される、請求項１～３のいずれかに記載の動釣合い試験機。 A state in which the spindle is rotated in the vibration processing for vibrating the weight member by the vibration portion and the measurement processing for measuring the unbalance of the DUT while the vibration portion is stopped after the vibration processing. The dynamic balance testing machine according to any one of claims 1 to 3, wherein the dynamic balance testing machine is continuously executed in the above.
  5. 　前記バランシングユニットと前記本体フレームとを弾性的に連結する弾性部材と、
    　前記バランシングユニットの位置をロックするロック部とを含み、
    　前記加振処理中では前記ロック部によるロックが解除されて前記バランシングユニットが振動可能であり、前記測定処理中では前記ロック部によって前記バランシングユニットの位置がロックされる、請求項４に記載の動釣合い試験機。     An elastic member for elastically connecting the balancing unit and the main body frame;
    A locking part for locking the position of the balancing unit;
    5. The motion according to claim 4, wherein the lock unit is unlocked during the vibration process to allow the balancing unit to vibrate, and the position of the balancing unit is locked by the lock unit during the measurement process. Balance testing machine.
PCT/JP2016/083989 2016-11-16 2016-11-16 Dynamic balance tester WO2018092217A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680150U (en) * 1993-04-23 1994-11-08 石川島播磨重工業株式会社 Turbine rotor balance measurement jig
JP2005181012A (en) * 2003-12-17 2005-07-07 Nagahama Seisakusho Ltd Bearing system applied to dynamic-balancing machine
JP2016161430A (en) * 2015-03-03 2016-09-05 Nok株式会社 Method for correcting eccentricity of unbalance correction machine
JP2016191597A (en) * 2015-03-31 2016-11-10 株式会社Ihi Balance inspection device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680150U (en) * 1993-04-23 1994-11-08 石川島播磨重工業株式会社 Turbine rotor balance measurement jig
JP2005181012A (en) * 2003-12-17 2005-07-07 Nagahama Seisakusho Ltd Bearing system applied to dynamic-balancing machine
JP2016161430A (en) * 2015-03-03 2016-09-05 Nok株式会社 Method for correcting eccentricity of unbalance correction machine
JP2016191597A (en) * 2015-03-31 2016-11-10 株式会社Ihi Balance inspection device

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