WO2018092217A1 - Dispositif d'essai d'équilibre dynamique - Google Patents

Dispositif d'essai d'équilibre dynamique 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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WO
WIPO (PCT)
Prior art keywords
unit
vibration
balancing unit
dynamic balance
base part
Prior art date
Application number
PCT/JP2016/083989
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English (en)
Japanese (ja)
Inventor
京極　義明
俊文 北之防
Original Assignee
株式会社長浜製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社長浜製作所 filed Critical 株式会社長浜製作所
Priority to PCT/JP2016/083989 priority Critical patent/WO2018092217A1/fr
Publication of WO2018092217A1 publication Critical patent/WO2018092217A1/fr

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

Abstract

L'invention concerne un dispositif d'essai d'équilibre dynamique qui permet de mesurer avec précision le déséquilibre d'un objet à essayer et qui possède une partie de base et une pluralité d'éléments de poids maintenus avec du jeu par la partie de base Le dispositif d'essai d'équilibre dynamique 1 comprend une unité d'équilibrage 11 et un cadre de corps principal 10 permettant de porter l'unité d'équilibrage 11. L'unité d'équilibrage 11 possède une broche 16 à laquelle la partie de base 3 est fixée dans un état dans lequel un axe d'arbre J s'étend verticalement à travers l'objet à essayer 2, et la broche 16 est entraînée de manière à tourner autour de l'axe vertical. L'unité d'équilibrage 11 possède également une partie support 15 qui permet de porter de manière vibratile la broche 16. L'unité d'équilibrage 11 comprend une unité de vibration 17 qui permet de faire vibrer les éléments de poids 4 de l'objet à essayer 2.
PCT/JP2016/083989 2016-11-16 2016-11-16 Dispositif d'essai d'équilibre dynamique WO2018092217A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP2016/083989 WO2018092217A1 (fr) 2016-11-16 2016-11-16 Dispositif d'essai d'équilibre dynamique

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Application Number Priority Date Filing Date Title
PCT/JP2016/083989 WO2018092217A1 (fr) 2016-11-16 2016-11-16 Dispositif d'essai d'équilibre dynamique

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680150U (ja) * 1993-04-23 1994-11-08 石川島播磨重工業株式会社 タービンロータのバランス測定用治具
JP2005181012A (ja) * 2003-12-17 2005-07-07 Nagahama Seisakusho Ltd 動釣合い試験機に適用される軸受け装置
JP2016161430A (ja) * 2015-03-03 2016-09-05 Nok株式会社 アンバランス修正機の偏心補正方法
JP2016191597A (ja) * 2015-03-31 2016-11-10 株式会社Ihi バランス検査装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680150U (ja) * 1993-04-23 1994-11-08 石川島播磨重工業株式会社 タービンロータのバランス測定用治具
JP2005181012A (ja) * 2003-12-17 2005-07-07 Nagahama Seisakusho Ltd 動釣合い試験機に適用される軸受け装置
JP2016161430A (ja) * 2015-03-03 2016-09-05 Nok株式会社 アンバランス修正機の偏心補正方法
JP2016191597A (ja) * 2015-03-31 2016-11-10 株式会社Ihi バランス検査装置

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