CN104316396A - XYZ triaxial centering regulating device for mechanical testing machine - Google Patents
XYZ triaxial centering regulating device for mechanical testing machine Download PDFInfo
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- CN104316396A CN104316396A CN201410603804.0A CN201410603804A CN104316396A CN 104316396 A CN104316396 A CN 104316396A CN 201410603804 A CN201410603804 A CN 201410603804A CN 104316396 A CN104316396 A CN 104316396A
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Abstract
The invention relates to an XYZ triaxial centering regulating device for a mechanical testing machine. A regulating part main body is of a cylindrical structure; a horizontal regulating block and an axial angle regulating block positioned at the upper end of the horizontal regulating block are arranged in the regulating part main body; an upper flange is fixedly arranged at the upper end of the regulating part main body by a flange set screw; a sensor fixed hole communicated with a flange hole at the center of the upper flange is axially formed at the center of the upper end of the axial angle regulating block; X-axis regulating bolts for carrying out X-direction regulation on the horizontal regulating block and Y-axis regulating bolts for carrying out Y-direction regulation are arranged at intervals on the cylinder wall of the regulating part main body and more than three axial angle regulation bolts for carrying out axial angle regulation on the axial angle regulation block in the regulating part main body are arranged; more than three axial locking screws for positioning the axial angle regulation block which is regulated well are arranged on the upper flange. The XYZ triaxial centering regulating device can completely eliminate centering deviation of the mechanical testing machine in a large range and improve testing precision and accuracy of a test.
Description
Technical field
The present invention relates to a kind of centering adjusting device.Particularly relate to a kind of XYZ tri-shaft assignment regulating device of mechanics machine.
Background technology
Mechanics machine needs by fixture clamping sample, and the alignment degree of fixture is very large to experimental test Influence on test result.When alignment deviation appears in fixture, after clamping sample, action shaft can produce Moment to sample, and this moment of flexure not only to sample as sensor causes damage, can cause sample unstability when compressing simultaneously, having a strong impact on the accuracy of test findings.But due to machining precision, alignment error, the factor such as transport shocks and machine ages, inevitably causes grip of testing machine to occur the phenomenon misaligned, installs centering adjusting device so necessary on mechanics machine.
At present, the MTS 8000 campaign machine that mechanics machine Jin You American MTS company on market produces be equipped with level (X, Y-direction) centering and axially (Z-direction) rotate the regulating device of centering regulatory function, but its complex structure, bulky, and centering adjustment needs after terminating to use long draw locking centering regulating block, take the stroke of testing machine, be unfavorable for the miniaturization of testing machine.The mode that the adjustment of domestic testing machine centering is most still relies on veteran tradesman to add pad in the junction of fixture or sample completes, and efficiency is low, repeatability is poor, and adjustable range is extremely restricted.Therefore, be badly in need of a kind of centering adjusting device of exploitation, can facilitate, complete accurately and rapidly the centering adjustment work of testing machine, eliminate because disalignment deviation is on the impact of test result.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of function having plane X, the adjustment of Y-direction centering and axial angle and regulate, meets the XYZ tri-shaft assignment regulating device of the mechanics machine of testing machine centering Adjustment precision requirement.
The technical solution adopted in the present invention is: a kind of XYZ tri-shaft assignment regulating device of mechanics machine, include regulating part main body, described regulating part main body is tubular structure, Level tune block and the axial angle regulating block being positioned at Level tune block upper end is provided with in described regulating part main body, the upper end of described regulating part main body is fixedly installed upper flange by flange gib screw, the upper end center of described axial angle regulating block is axially formed with the sensor fixing hole be connected with the flange hole at described upper flange center, on the barrel of described regulating part main body, interval is provided with for carrying out the X-axis adjusting bolt of X-direction adjustment to described Level tune block and carrying out the Y-axis adjusting bolt of Y-direction adjustment, and be provided with the axial angle adjusting bolt for carrying out axial angle adjustment to the axial angle regulating block in regulating part main body of more than 3, described upper flange is provided with the axial locking screw for positioning the axial angle regulating block regulated of more than 3.
Described X-axis adjusting bolt and Y-axis adjusting bolt are in same level on the barrel of described regulating part main body, are respectively provided with more than 2, and described X-axis adjusting bolt and Y-axis adjusting bolt are that interval is arranged.
The base of the regulating part main body of described tubular structure is formed with the base of protruding laterally.
For sphere is connected between described Level tune block and described axial angle regulating block.
The top end face of described Level tune block is convex globoidal structure protruding upward, the bottom face of described axial angle regulating block be inwardly recessed can with the cancave cambered surface structure of the convex globoidal damascene of described Level tune block top end face.
The inner peripheral surface of described regulating part main body is formed a circle to central shaft protrude for carrying out spacing boss to Level tune block, described X-axis adjusting bolt and Y-axis adjusting bolt are positioned at the below of described boss, and described axial angle adjusting bolt is positioned at the top of described boss.
Described Level tune block includes the main body of column structure, the diameter of described column structure main body is less than the internal diameter of described boss, the main body of described column structure is formed with a circle positioning table, the diameter of described positioning table is less than the internal diameter of described regulating part main body, be greater than the internal diameter of described boss, the top of the main body of described column structure is formed with the top cap for the convex globoidal structure combined with the bottom surface of axial angle regulating block, the diameter of described top cap is greater than the diameter of Level tune block column structure main body, equal with the internal diameter of described boss, the crown of described top cap is cambered surface protruding upward, and be that sphere-contact is connected with the lower surface of described axial angle regulating block, distance between the upper table surface of described positioning table and the bottom surface of described top cap is greater than the height of institute's boss.
Described axial angle regulating block is ┷ shape structure, the base diameter of described ┷ shape structure is greater than the diameter of Level tune block top end face, the bottom face of described ┷ shape structure be formed be inwardly recessed for being the cancave cambered surface that sphere-contact is connected with described Level tune block upper surface, the top of described ┷ shape structure vertical part is positioned at the flange hole at the upper flange center on regulating part main body top, and is axially forming the sensor fixing hole be inwardly recessed.
The lower surface of described Level tune block is higher than the lower surface 0.5mm of described regulating part main body.
The XYZ tri-shaft assignment regulating device of a kind of mechanics machine of the present invention, on the one hand, can eliminate the alignment deviation of mechanics machine completely in a big way, improves results precision and accuracy; On the other hand, effectively can reduce the accuracy requirement to pilot system processing, assembling, save the processing and manufacturing cost of testing machine.The advantages such as in addition, structure of the present invention is simple, processes, assembles easily, easy for installation, are extremely adapted at promoting the use of in all kinds of mechanical test test macro.The present invention also has following beneficial effect:
1) this centering regulates platform can angular deviation in alignment deviation on Elimination test machine between lower clamp on XY direction in 5mm and Z-direction within 5 °, and adjustable range is large;
2) fine thread fine setting feed arrangement is adopted to realize the accurate adjustment of X, Y both direction and Z-direction angle, easy to operate, be easy to promote the use of;
3) this apparatus structure is compact, after completing centering fine setting, clamping screw can be utilized to realize locking thus eliminate back gap, make adjustment platform be applicable to dynamic circulation load testing machine.
Accompanying drawing explanation
Fig. 1 is the external structure schematic diagram of the XYZ tri-shaft assignment regulating device of mechanics machine of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the B-B sectional view of Fig. 2;
Fig. 5 is the XYZ tri-shaft assignment regulating device application example figure of mechanics machine of the present invention.
In figure
1: regulating part main body 2: base
3: Level tune block 4: axial angle regulating block
5: flange gib screw 6: upper flange
7:X axle adjusting bolt 8:Y axle adjusting bolt
9: axial angle adjusting bolt 10: sensor fixing hole
11: axial locking screw 12: boss
13: positioning table 14: top cap
15:XYZ tri-shaft assignment regulating device 16: connecting pin
17: connecting pin 18: motor contact
19: locking flange 20: upper fixture
21: compression sample 22: lower clamp
23: lock flange 24: sensor connecting piece
25: sensor
Embodiment
Below in conjunction with embodiment and accompanying drawing, the XYZ tri-shaft assignment regulating device to a kind of mechanics machine of the present invention is described in detail.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, the XYZ tri-shaft assignment regulating device of a kind of mechanics machine of the present invention, include regulating part main body 1, described regulating part main body 1 is tubular structure, the base of the regulating part main body 1 of described tubular structure be formed with protrude laterally for regulating part main body 1 being fixed on the base 2 on relevant work platform.Be provided with for regulating the Level tune block 3 of plane X Y-direction and being positioned at the axial angle regulating block 4 of Level tune block 3 upper end in described regulating part main body 1, the lower surface of described Level tune block 3 is higher than the lower surface 0.5mm of described regulating part main body 1.For sphere is connected between described Level tune block 3 and described axial angle regulating block 4.The top end face of described Level tune block 3 is convex globoidal structure protruding upward, the bottom face of described axial angle regulating block 4 be inwardly recessed can with the cancave cambered surface structure of the convex globoidal damascene of described Level tune block 3 top end face, thus make to form sphere between described Level tune block 3 and described axial angle regulating block 4 and be connected.
As Fig. 1, shown in Fig. 4, the upper end of described regulating part main body 1 is fixedly installed for the upper flange 6 of lock shaft to angle-regulating block 4 by flange gib screw 5, the upper end center of described axial angle regulating block 4 is axially formed with the sensor fixing hole 10 be connected with the flange hole at described upper flange 6 center, on the barrel of described regulating part main body 1, interval is provided with for carrying out the X-axis adjusting bolt 7 of X-direction adjustment to described Level tune block 3 and carrying out the Y-axis adjusting bolt 8 of Y-direction adjustment, and be provided with the axial angle adjusting bolt 9 for carrying out axial angle adjustment to the axial angle regulating block 4 in regulating part main body 1 of more than 3, the present embodiment is provided with the axial locking screw 11 for positioning the axial angle regulating block 4 regulated that can regulate and upper flange 6 described in the axial angle adjusting bolt 9 of four of axial angle mutual distributions in 90 ° be provided with more than 3.
Described X-axis adjusting bolt 7 and Y-axis adjusting bolt 8 are in same level on the barrel of described regulating part main body 1, are respectively provided with more than 2, and described X-axis adjusting bolt 7 and Y-axis adjusting bolt 8 are interval setting.The inner peripheral surface of described regulating part main body 1 is formed a circle to central shaft protrude for carrying out spacing boss 12 to Level tune block 3, described X-axis adjusting bolt 7 and Y-axis adjusting bolt 8 are positioned at the below of described boss 12, and described axial angle adjusting bolt 9 is positioned at the top of described boss 12.
Described Level tune block 3 includes the main body of column structure, the diameter of described column structure main body is less than the internal diameter of described boss 12, the main body of described column structure is formed with a circle positioning table 13, the diameter of described positioning table 13 is less than the internal diameter of described regulating part main body 1, be greater than the internal diameter of described boss 12, the top of the main body of described column structure is formed with the top cap 14 for the convex globoidal structure combined with the bottom surface of axial angle regulating block 4, the diameter of described top cap 14 is greater than the diameter of Level tune block 3 column structure main body, equal with the internal diameter of described boss 12, the crown of described top cap 14 is cambered surface protruding upward, and be that sphere-contact is connected with the lower surface of described axial angle regulating block 4, distance between the upper table surface of described positioning table 13 and the bottom surface of described top cap 14 is greater than the height of institute's boss 12.
Described axial angle regulating block 4 is ┷ shape structure, the base diameter of described ┷ shape structure is greater than the diameter of Level tune block 3 top end face, the bottom face of described ┷ shape structure be formed be inwardly recessed for being the cancave cambered surface that sphere-contact is connected with described Level tune block 3 upper surface, the top of described ┷ shape structure vertical part is positioned at the flange hole at upper flange 6 center on regulating part main body 1 top, and is axially forming the sensor fixing hole 10 be inwardly recessed.
The XYZ tri-shaft assignment regulating device of a kind of mechanics machine of the present invention, has plane X Y-direction centering regulatory function and axial angle regulatory function concurrently.First, by the bottom mating spherical surfaces position of axial angle adjusting bolt regulating shaft to angle-regulating block, the axial angle deviation of fixture and lower clamp in elimination; Then, by regulating X-axis adjusting bolt and the Y-axis adjusting bolt adjustment position of Level tune block on workbench, fixture is made to realize centering.In adjustment process, preferentially ensure axial angle centering all the time, the alignment deviation in fixture and lower clamp XY direction on successive elimination; Finally, after adjustment to be centred completes, utilize the boss locking Level tune block in the middle part of regulating part main body, utilize the axial locking screw lock axial angle regulating block in upper flange.
Below in conjunction with Fig. 5, the embodiment of the XYZ tri-shaft assignment regulating device of a kind of mechanics machine of the present invention is described in detail:
The object of the XYZ tri-shaft assignment regulating device of a kind of mechanics machine of the present invention regulates Level tune block and axial angle regulating block position in the plane by adjusting bolt, thus thoroughly eliminate plane alignment deviation and the axial angle error of upper lower clamp.Then the boss of the axial locking bolt on upper flange and regulating part main body is utilized to distinguish lock shaft to angle-regulating block and Level tune block.
As shown in Figure 5, after testing machine Long-Time Service, a series of alignment deviation can be produced, finally make the upper compressed chuck that is connected with motor output shaft with and the lower compressed chuck that is connected of sensor 25 produce axial misalignment, plane alignment deviation, comparatively big error can be brought when testing machine now carries out compression test.After utilizing the XYZ tri-shaft assignment regulating device 15 of a kind of mechanics machine of the present invention to regulate, effect as shown in Figure 5 can be reached: even if the motor of testing machine exports main shaft and surface level out of plumb, there is a series of alignment deviation in upper fixture 20 and lower clamp 22, can ensure the entirely on the center of fixture 20 and lower clamp 22 after utilizing device of the present invention to regulate.Specific implementation process is as follows:
First should by regulating shaft to angle adjustable bolt, the axial angle deviation of fixture 20 and lower clamp 22 in elimination, in axial adjustment process, the upper end sphere of Level tune block contacts in face all the time with the lower end sphere of axial angle regulating block, the sphere center position of the upper end sphere of Level tune block immobilizes, so can realize the rotation of axial angle regulating block any direction in certain angle θ.After axial angle deviation is eliminated, the centering regulating XY direction should be continued under the state that fixture 20 and lower clamp 22 fit tightly on ensureing.This is because continue to regulate X-axis adjusting bolt and Y-axis adjusting bolt, Level tune block position deviation planar, but after Level tune block planimetric position changes, the sphere center position of its upper end sphere also position thereupon can change thereupon, the axial alignment of the first step can be affected, so must to the axial alignment of angle-regulating block, also can be realized by the axial angle adjusting bolt on the same axial location of adjusted in concert and X-axis adjusting bolt and Y-axis adjusting bolt by regulating shaft in real time.
After centering has regulated, need to lock regulating device, to carry out next step test, this device utilizes Level tune block lower surface to exceed the distance of 0.5mm than regulating part main body lower surface distance, tighten the bolt of regulating part bottom part body flange, Level tune block is locked by boss lower surface.Tighten the flange gib screw of upper flange, lock shaft is to angle-regulating block.
Claims (9)
1. the XYZ tri-shaft assignment regulating device of a mechanics machine, include regulating part main body (1), it is characterized in that, described regulating part main body (1) is tubular structure, be provided with Level tune block (3) in described regulating part main body (1) and be positioned at the axial angle regulating block (4) of Level tune block (3) upper end, the upper end of described regulating part main body (1) is fixedly installed upper flange (6) by flange gib screw (5), the upper end center of described axial angle regulating block (4) is axially formed with the sensor fixing hole (10) be connected with the flange hole at described upper flange (6) center, on the barrel of described regulating part main body (1), interval is provided with for carrying out the X-axis adjusting bolt (7) of X-direction adjustment to described Level tune block (3) and carrying out the Y-axis adjusting bolt (8) of Y-direction adjustment, and be provided with the axial angle adjusting bolt (9) for carrying out axial angle adjustment to the axial angle regulating block (4) in regulating part main body (1) of more than 3, described upper flange (6) is provided with the axial locking screw (11) for positioning the axial angle regulating block (4) regulated of more than 3.
2. the XYZ tri-shaft assignment regulating device of a kind of mechanics machine according to claim 1, it is characterized in that, described X-axis adjusting bolt (7) and Y-axis adjusting bolt (8) are in same level on the barrel of described regulating part main body (1), respectively be provided with more than 2, described X-axis adjusting bolt (7) and Y-axis adjusting bolt (8) are interval setting.
3. the XYZ tri-shaft assignment regulating device of a kind of mechanics machine according to claim 1, is characterized in that, the base of the regulating part main body (1) of described tubular structure is formed with the base (2) of protruding laterally.
4. the XYZ tri-shaft assignment regulating device of a kind of mechanics machine according to claim 1, is characterized in that, for sphere is connected between described Level tune block (3) and described axial angle regulating block (4).
5. the XYZ tri-shaft assignment regulating device of a kind of mechanics machine according to claim 1 or 4, it is characterized in that, the top end face of described Level tune block (3) is convex globoidal structure protruding upward, the bottom face of described axial angle regulating block (4) be inwardly recessed can with the cancave cambered surface structure of the convex globoidal damascene of described Level tune block (3) top end face.
6. the XYZ tri-shaft assignment regulating device of a kind of mechanics machine according to claim 1, it is characterized in that, the inner peripheral surface of described regulating part main body (1) is formed a circle to central shaft protrude for carrying out spacing boss (12) to Level tune block (3), described X-axis adjusting bolt (7) and Y-axis adjusting bolt (8) are positioned at the below of described boss (12), and described axial angle adjusting bolt (9) is positioned at the top of described boss (12).
7. the XYZ tri-shaft assignment regulating device of a kind of mechanics machine according to claim 1 or 5, it is characterized in that, described Level tune block (3) includes the main body of column structure, the diameter of described column structure main body is less than the internal diameter of described boss (12), the main body of described column structure is formed with a circle positioning table (13), the diameter of described positioning table (13) is less than the internal diameter of described regulating part main body (1), be greater than the internal diameter of described boss (12), the top of the main body of described column structure is formed with the top cap (14) for the convex globoidal structure combined with the bottom surface of axial angle regulating block (4), the diameter on described top cap (14) is greater than the diameter of Level tune block (3) column structure main body, equal with the internal diameter of described boss (12), the crown on described top cap (14) is cambered surface protruding upward, and be that sphere-contact is connected with the lower surface of described axial angle regulating block (4), distance between the upper table surface of described positioning table (13) and the bottom surface on described top cap (14) is greater than the height of institute's boss (12).
8. the XYZ tri-shaft assignment regulating device of a kind of mechanics machine according to claim 1 or 4, it is characterized in that, described axial angle regulating block (4) is ┷ shape structure, the base diameter of described ┷ shape structure is greater than the diameter of Level tune block (3) top end face, the bottom face of described ┷ shape structure be formed be inwardly recessed for being the cancave cambered surface that sphere-contact is connected with described Level tune block (3) upper surface, the top of described ┷ shape structure vertical part is positioned at the flange hole at upper flange (6) center on regulating part main body (1) top, and axially forming the sensor fixing hole (10) be inwardly recessed.
9. the XYZ tri-shaft assignment regulating device of a kind of mechanics machine according to claim 1, is characterized in that, the lower surface of described Level tune block (3) is higher than the lower surface 0.5mm of described regulating part main body (1).
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| CN201410603804.0A CN104316396B (en) | 2014-10-30 | 2014-10-30 | A kind of XYZ tri-shaft assignment adjusting means of mechanics machine |
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| CN105021850A (en) * | 2015-06-24 | 2015-11-04 | 重庆长安汽车股份有限公司 | Motor test bench centering system |
| CN105092390A (en) * | 2015-07-31 | 2015-11-25 | 中国地质大学（武汉） | Weak-plane direct shear testing method and distance adjusting device used for the same |
| CN105275453A (en) * | 2015-09-30 | 2016-01-27 | 北京信息科技大学 | Quick self-fixing mounting support for deep well liquid level instrument |
| CN107576578A (en) * | 2017-10-09 | 2018-01-12 | 中冶焦耐(大连)工程技术有限公司 | A kind of upper loading system and based on thereon refractory material experiment plus unloading method |
| CN108562511A (en) * | 2018-02-01 | 2018-09-21 | 上海百若试验仪器有限公司 | A kind of concentricity adjusting apparatus of fatigue tester |
| CN108593171A (en) * | 2018-04-28 | 2018-09-28 | 四川大学 | MTS triaxial test force sensor apparatus |
| CN109100215A (en) * | 2018-07-17 | 2018-12-28 | 南京航空航天大学 | A kind of centralising device and centering method for tension-torsion testing of materials machine clamp |
| CN109900545A (en) * | 2019-02-28 | 2019-06-18 | 深圳市德瑞茵精密科技有限公司 | A kind of crochet hook concentricity regulating mechanism |
| CN110726637A (en) * | 2019-12-02 | 2020-01-24 | 吉林大学 | Centering adjustment device and adjustment method |
| CN110836830A (en) * | 2019-12-02 | 2020-02-25 | 吉林大学 | Fatigue testing machine capable of adjusting coaxiality and loading chain centering adjustment method |
| CN111006961A (en) * | 2019-09-28 | 2020-04-14 | 力试（上海）科学仪器有限公司 | Accurate adjusting device of testing machine axiality and testing machine |
| WO2022166108A1 (en) * | 2021-02-05 | 2022-08-11 | 济南恒瑞金试验机有限公司 | Test system for testing performance during medical rehabilitation of injury to bone, tendon, and ligament in rats and mice |
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Cited By (16)
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| CN105021850A (en) * | 2015-06-24 | 2015-11-04 | 重庆长安汽车股份有限公司 | Motor test bench centering system |
| CN105021850B (en) * | 2015-06-24 | 2018-10-23 | 重庆长安汽车股份有限公司 | A kind of motor test rack center support system |
| CN105092390A (en) * | 2015-07-31 | 2015-11-25 | 中国地质大学（武汉） | Weak-plane direct shear testing method and distance adjusting device used for the same |
| CN105275453A (en) * | 2015-09-30 | 2016-01-27 | 北京信息科技大学 | Quick self-fixing mounting support for deep well liquid level instrument |
| CN107576578A (en) * | 2017-10-09 | 2018-01-12 | 中冶焦耐(大连)工程技术有限公司 | A kind of upper loading system and based on thereon refractory material experiment plus unloading method |
| CN107576578B (en) * | 2017-10-09 | 2024-01-30 | 中冶焦耐(大连)工程技术有限公司 | Loading device and refractory material test loading and unloading method based on loading device |
| CN108562511A (en) * | 2018-02-01 | 2018-09-21 | 上海百若试验仪器有限公司 | A kind of concentricity adjusting apparatus of fatigue tester |
| CN108593171A (en) * | 2018-04-28 | 2018-09-28 | 四川大学 | MTS triaxial test force sensor apparatus |
| CN109100215B (en) * | 2018-07-17 | 2020-11-03 | 南京航空航天大学 | Centering device and centering method for clamp of tension-torsion material testing machine |
| CN109100215A (en) * | 2018-07-17 | 2018-12-28 | 南京航空航天大学 | A kind of centralising device and centering method for tension-torsion testing of materials machine clamp |
| CN109900545A (en) * | 2019-02-28 | 2019-06-18 | 深圳市德瑞茵精密科技有限公司 | A kind of crochet hook concentricity regulating mechanism |
| CN109900545B (en) * | 2019-02-28 | 2021-09-21 | 深圳市德瑞茵精密科技有限公司 | Crochet hook concentricity adjusting mechanism |
| CN111006961A (en) * | 2019-09-28 | 2020-04-14 | 力试（上海）科学仪器有限公司 | Accurate adjusting device of testing machine axiality and testing machine |
| CN110726637A (en) * | 2019-12-02 | 2020-01-24 | 吉林大学 | Centering adjustment device and adjustment method |
| CN110836830A (en) * | 2019-12-02 | 2020-02-25 | 吉林大学 | Fatigue testing machine capable of adjusting coaxiality and loading chain centering adjustment method |
| WO2022166108A1 (en) * | 2021-02-05 | 2022-08-11 | 济南恒瑞金试验机有限公司 | Test system for testing performance during medical rehabilitation of injury to bone, tendon, and ligament in rats and mice |
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Address after: 229-8, No. 11, Ligang Park, Shuanggang Industrial Park, Shuanggang Town, Jinnan District, Tianjin Patentee after: CARE MEASUREMENT AND CONTROL TESTING SYSTEM (TIANJIN) Co.,Ltd. Address before: 300100, 16 floor, creative agglomeration area, 92 Changjiang Road, Tianjin, Nankai District Patentee before: CARE MEASUREMENT AND CONTROL TESTING SYSTEM (TIANJIN) Co.,Ltd. |