CN111122144B - Double-station torsion testing device - Google Patents
Double-station torsion testing device Download PDFInfo
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- CN111122144B CN111122144B CN202010041504.3A CN202010041504A CN111122144B CN 111122144 B CN111122144 B CN 111122144B CN 202010041504 A CN202010041504 A CN 202010041504A CN 111122144 B CN111122144 B CN 111122144B
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- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims description 27
- 238000001179 sorption measurement Methods 0.000 claims description 6
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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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
- G01M13/00—Testing of machine parts
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a double-station torsion testing device which comprises a torsion assembly and a detection assembly, wherein the torsion assembly comprises a torsion unit, a carrier and a linear driving unit; wherein, the carrier is used for fixing and holding the work piece; the detection component is used for detecting a workpiece fixed on the carrier; the torsion unit comprises a motor and a torsion module; the number of the torsion modules is two, and the two torsion modules are driven to rotate by a motor; the torsion module comprises a rotating shaft, and the rotating shaft is used for being connected with a rotating part of a workpiece fixed on the carrier; the torsion unit is driven to move through the linear driving unit, so that the rotating shaft moves to be connected with the rotating part of the workpiece; the motor drives the rotating shafts to rotate, so that the rotating parts of the workpieces are driven to rotate, the two rotating shafts are driven by the same motor to drive the rotating parts of the two workpieces to rotate respectively to simulate the torsion work of the workpieces, the detection assembly is used for detecting the torsion work, the detection efficiency is improved, and the torsion testing device is convenient to use, simple in structure and convenient to maintain.
Description
Technical Field
The invention belongs to the field of automation, and particularly relates to a double-station torsion testing device.
Background
The rotating parts in the intelligent watch are required to be subjected to torsion test, the service life of the rotating parts is required to be detected through simulation, and because the parts in the intelligent watch are precise components and parts, the size is smaller, auxiliary equipment for the rotating parts is required to be provided in the detection process, when a plurality of rotating parts are required to be detected, if the rotating parts are detected through a single detection device, time is wasted, and if the rotating parts are required to be detected through a plurality of detection devices, resources are wasted, and meanwhile, when torsion contrast test is required to be performed, parameters of different detection devices are required to be adjusted.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a double-station torsion testing device.
The invention provides a double-station torsion testing device which comprises a torsion assembly and a detection assembly, wherein the torsion assembly comprises a torsion unit, a carrier and a linear driving unit; wherein,
The carrier is used for fixing the supporting workpiece; the detection assembly is used for detecting a workpiece fixed on the carrier;
The torsion unit comprises a motor and a torsion module; the number of the torsion modules is two, and the two torsion modules are driven to rotate by the motor; the torsion module comprises a rotating shaft, wherein the rotating shaft is used for being connected with a rotating part of a workpiece fixed on the carrier;
The torsion unit is driven to move through the linear driving unit, so that the rotating shaft moves to be connected with the rotating part of the workpiece; the motor drives the rotating shaft to rotate, so that the rotating part of the workpiece is driven to rotate.
Preferably, the carrier comprises a carrying platform, and a carrying groove for placing a workpiece is formed in the carrying platform;
Adjacent three surfaces in the material bearing groove are contacted with the workpiece; the adsorption module is arranged on three adjacent surfaces in the material bearing groove, and the workpiece is adsorbed on three adjacent surfaces in the material bearing groove through the adsorption module, so that the workpiece is fixed in the material bearing groove.
Preferably, a positioning fixture block is arranged on the material carrying table, and the positioning fixture block is arranged on one surface of the material carrying groove contacted with the workpiece;
And limiting the workpiece through the positioning fixture block and the material bearing groove, so that the workpiece is positioned.
Preferably, the material bearing groove is provided with mounting holes on three adjacent surfaces contacted with the workpiece, and the mounting holes are fixedly provided with magnets for adsorbing the workpiece.
Preferably, the torsion unit includes a connection bracket; the connecting bracket is used for connecting the torsion units into a whole; the linear driving unit is connected with the connecting bracket;
The torsion assembly further comprises a guide sliding rail, a sliding block is mounted on the bottom surface of the connecting support, the guide sliding rail is in sliding connection with the sliding block, and the linear driving unit drives the torsion unit to move along the extending direction of the guide sliding rail through the guide sliding rail and the sliding block.
Preferably, the torsion unit further comprises driving wheels, the torsion module further comprises driven wheels, the number of the driving wheels is consistent with that of the torsion module, a driving shaft is connected to a rotating part of the motor, and the driving wheels are fixedly connected to the driving shaft;
The driven wheel is connected with the rotating shaft, and the motor drives the driving wheel to rotate, so that the driving wheel drives the driven wheel to rotate, and the rotating shaft connected with the driven wheel rotates.
Preferably, the torsion module further comprises a bearing, the bearing is mounted on the rotating shaft, and the bearing is fixed on the connecting bracket, so that the torsion module is arranged on the supporting structure.
Preferably, the detection assembly comprises a detection unit for detection, a light source arranged between the detection unit and the workpiece, and the light source is used for irradiating the workpiece.
Preferably, the light source includes a refraction module, and the light generated by the light source is refracted onto the workpiece by the refraction module, so that the detection direction of the detection unit is perpendicular to the irradiation direction of the light source.
Preferably, the detection assembly further comprises a fixed plate; the fixing plate is used for connecting the detection components into a whole;
The fixed plate is connected with the detection unit in a sliding way; and the fixing plate is provided with an adjusting screw, and the position of the detection unit on the fixing plate is adjusted through the adjusting screw, so that the distance between the detection unit and the workpiece is adjusted.
Compared with the prior art, the invention has the beneficial effects that:
According to the double-station torsion testing device provided by the invention, the two torsion modules are driven by the linear driving unit to be respectively connected with the two workpieces, and the two torsion modules are driven by the same motor, so that the resources are saved, the detection efficiency is improved, the rotation parameters of the two workpieces are ensured to be the same, the two workpieces are conveniently compared, and the double-station torsion testing device is convenient to use and simple in structure.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a torsion assembly according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a torsion assembly according to a second embodiment of the present invention;
FIG. 4 is an enlarged partial schematic view of FIG. 3;
FIG. 5 is a front view of a torsion assembly according to one embodiment of the present invention;
FIG. 6 is a schematic perspective view of a torsion module according to an embodiment of the invention;
FIG. 7 is an exploded view of a carrier according to an embodiment of the present invention;
fig. 8 is a schematic perspective view of a detection assembly according to an embodiment of the invention.
The figure shows:
1. A torsion assembly; 11. a substrate; 12. a torsion unit; 121. a connecting bracket; 122. a motor; 1221. a drive shaft; 123. a driving wheel; 124. a torsion module; 1241. driven wheel; 1242. a bearing; 1243. a rotating shaft; 125. a slide block; 13. a carrier; 131. a material carrying table; 1311. a material bearing groove; 1312. a mounting hole; 1313. positioning a clamping block; 132. a magnet; 14. a linear driving unit; 15. a guide rail; 2. a detection assembly; 21. a fixing plate; 22. a detection unit; 23. a light source; 24. an adjusting screw; 3. a workpiece.
Detailed Description
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a device for practicing the invention. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the top-to-bottom dimension, "width" corresponds to the left-to-right dimension, "depth" corresponds to the front-to-back dimension, "closed" refers to the carrier being convenient to pass and the operator being unable to pass, and "annular" corresponds to the cyclic shape. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms (e.g., "connected" and "attached") referring to an attachment, coupling, etc., refer to a relationship wherein these structures are directly or indirectly secured or attached to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
As shown in fig. 1, the double-station torsion testing device comprises a torsion assembly 1 and a detection assembly 2, wherein the torsion assembly 1 is used for rotating a workpiece 3, and the detection assembly 2 is used for detecting the workpiece 3 rotated by the torsion assembly 1 so as to test the service life of the workpiece 3; as shown in fig. 2, the torsion assembly 1 includes a torsion unit 12, a carrier 13, and a linear driving unit 14; wherein,
As shown in fig. 3 and 4, the carrier 13 is used for fixing the carrying tool 3; the detection component 2 is used for detecting the workpiece 3 fixed on the carrier 13; the carrier 13 holds the workpiece 3 at a fixed position, so that the rotating end of the detection assembly 2 is conveniently and accurately connected with the rotating part of the workpiece 3, and the rotating part of the workpiece 3 rotates;
The torsion unit 12 comprises a motor 122 and a torsion module 124; the number of the torsion modules 124 is two, and the two torsion modules 124 are driven to rotate by the motor 122; as shown in fig. 6, the torsion module 124 includes a rotation shaft 1243, and the rotation shaft 1243 is used for connecting with a rotation portion of the workpiece 3 fixed on the carrier 13; the two torsion modules 124 are simultaneously driven to rotate by the same motor 122, so that the rotating part of the workpiece 3 is simultaneously driven to rotate, the detection efficiency is improved, the use of the motor 122 is reduced, and resources are saved; when the service lives of the two workpieces 3 need to be compared, the same motor 122 drives the rotating parts of the workpieces 3, so that the consistency of the simulation use conditions of the workpieces is ensured, the two workpieces 3 are intuitively compared, and the adjustment of the test equipment and the convenient use are omitted when the two test equipment are used.
The torsion unit 12 is driven to move through the linear driving unit 14, so that the rotating shaft 1243 is disconnected with the rotating part of the workpiece 3, and when the rotating shaft 1243 moves to be connected with the rotating part of the workpiece 3, the motor 122 drives the rotating shaft 1243 to rotate so as to drive the rotating part of the workpiece 3 to rotate; when the rotation shaft 1243 is disconnected from the rotating portion of the workpiece 3, the workpiece 3 is conveniently taken out from the carrier 13.
As shown in fig. 7, the carrier 13 includes a material carrying platform 131, and a material carrying groove 1311 for placing the workpiece 3 is formed on the material carrying platform 131; adjacent three surfaces in the material bearing groove 1311 are contacted with the workpiece 3, and the adjacent three surfaces are contacted with the workpiece 3, so that the position of the workpiece 3 is limited, the workpiece 3 is positioned, and the workpiece 3 is placed on the fixed position of the carrier 13; the adsorption modules are arranged on three adjacent surfaces in the material bearing groove 1311, and the workpiece 3 is adsorbed on the three adjacent surfaces in the material bearing groove 1311 through the adsorption modules, so that the workpiece 3 is fixed in the material bearing groove 1311, and the workpiece 3 is limited to deviate in the rotating process.
The loading table 131 is provided with a positioning fixture block 1313, the positioning fixture block 1313 is arranged on one surface of the loading groove 1311 contacted with the workpiece 3, movement of the workpiece 3 in one direction is limited, and the workpiece 3 is limited through the positioning fixture block 1313 and the loading groove 1311, so that the workpiece 3 is positioned.
In a preferred embodiment, the adsorption module comprises a magnet 132, and since the workpiece 3 is a rotating component on the smart watch, the workpiece is made of a material that can be attracted by the magnet 132, and the adjacent three surfaces of the material bearing groove 1311, which are in contact with the workpiece 3, are provided with mounting holes 1312, the magnet 132 is fixedly mounted in the mounting holes 1312, and the workpiece 3 is adsorbed by the magnet 132.
The torsion unit 12 should include a connection bracket 121; the connecting bracket 121 is used for connecting the torsion units 12 into a whole; the linear driving unit 14 is connected with the connection bracket 121; the torsion unit 12 moves, and the carrier 13 is fixed on the substrate 11, so that the two torsion modules 124 are conveniently separated from or connected with the workpiece 3 at the same time; the synchronous work is ensured.
As shown in fig. 5, the torsion assembly 1 further includes a guide rail 15, a slider 125 is mounted on the bottom surface of the connection bracket 121, and the guide rail 15 is slidably connected with the slider 125, so that the linear driving unit 14 drives the torsion unit 12 to move along the extending direction of the guide rail 15 through the guide rail 15 and the slider 125.
The torsion unit 12 further comprises a driving wheel 123, the torsion module 124 further comprises driven wheels 1241, the number of the driving wheels 123 is consistent with that of the torsion module 124, a driving shaft 1221 is connected to the rotating part of the motor 122, and the driving wheels 123 are fixedly connected to the driving shaft 1221; the driven wheel 1241 is connected with the rotating shaft 1243, and the motor 122 drives the driving wheel 123 to rotate, so that the driving wheel 123 drives the driven wheel 1241 to rotate, the rotating shaft 1243 connected with the driven wheel 1241 rotates, and the driving wheel 123 drives the driven wheel 1241, so that the transmission efficiency is improved.
The torsion module 124 further includes a bearing 1242, the bearing 1242 is mounted on the rotating shaft 1243, and the bearing 1242 is fixed on the connecting bracket 121, so that the torsion module 124 is disposed on the supporting structure, friction loss in the rotating process of the rotating shaft 1243 is reduced, and transmission efficiency is improved.
As shown in fig. 8, the detecting assembly 2 includes a detecting unit 22 for detecting, a light source 23, the detecting unit 22 includes a visual detector, and by disposing the light source 23 between the detecting unit 22 and the workpiece 3, the light source 23 is used for illuminating the workpiece 3, and improving the brightness so that the visual detector images clearly, and the detection result is more accurate.
The light source 23 comprises a refraction module, and light generated by the light source 23 is refracted to the workpiece 3 through the refraction module, so that the detection direction of the detection unit 22 is perpendicular to the irradiation direction of the light source 23, and the volume of the detection assembly 2 is reduced.
The detection assembly 2 further comprises a fixed plate 21; the fixing plate 21 is used for connecting the detection assembly 2 into a whole; the fixed plate 21 is in sliding connection with the detection unit 22; the fixing plate 21 is provided with the adjusting screw 24, and the position of the detecting unit 22 on the fixing plate 21 is adjusted through the adjusting screw 24, so that the distance between the detecting unit 22 and the workpiece 3 is adjusted, the imaging quality of the visual detector is adjusted, and the detecting accuracy of the detecting unit 22 is ensured.
The invention provides a double-station torsion testing device, which is characterized in that two torsion modules are driven by a linear driving unit to be respectively connected with two workpieces, and the two torsion modules are driven by the same motor, so that the resources are saved, the detection efficiency is improved, the rotation parameters of the two workpieces are ensured to be the same, and the two workpieces are conveniently compared; limiting the position of the workpiece through the material bearing groove and the positioning fixture block, so as to position the workpiece; the linear driving unit drives the torsion unit to move, so that the rotating shaft can be disconnected with the rotating part of the workpiece, and the workpiece is convenient to take and place.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; those skilled in the art can smoothly practice the invention as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present invention are possible in light of the above teachings without departing from the scope of the invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the present invention.
Claims (8)
1. The utility model provides a duplex position torsion testing arrangement, includes torsion subassembly (1), detection component (2), its characterized in that: the torsion assembly (1) comprises a torsion unit (12), a carrier (13) and a linear driving unit (14); wherein,
The carrier (13) is used for fixing the bearing workpiece (3); the detection assembly (2) is used for detecting a workpiece (3) fixed on the carrier (13);
The torsion unit (12) comprises a motor (122) and a torsion module (124); the number of the torsion modules (124) is two, and the two torsion modules (124) are driven to rotate by the motor (122); the torsion module (124) comprises a rotating shaft (1243), and the rotating shaft (1243) is used for being connected with a rotating part of a workpiece (3) fixed on the carrier (13);
-driving the torsion unit (12) to move by means of the linear drive unit (14) such that the rotation shaft (1243) moves into connection with the rotating part of the workpiece (3); the motor (122) drives the rotating shaft (1243) to rotate, so that the rotating part of the workpiece (3) is driven to rotate;
The carrier (13) comprises a carrying table (131), and a carrying groove (1311) for placing the workpiece (3) is formed in the carrying table (131);
Adjacent three surfaces in the material bearing groove (1311) are contacted with the workpiece (3); the workpiece (3) is adsorbed on the three adjacent surfaces in the material receiving groove (1311) through the adsorption module, so that the workpiece (3) is fixed in the material receiving groove (1311);
The torsion unit (12) comprises a connecting bracket (121); the connecting bracket (121) is used for connecting the torsion units (12) into a whole; the linear driving unit (14) is connected with the connecting bracket (121);
The torsion assembly (1) further comprises a guide sliding rail (15), a sliding block (125) is arranged on the bottom surface of the connecting support (121), the guide sliding rail (15) is in sliding connection with the sliding block (125), and the linear driving unit (14) drives the torsion unit (12) to move along the extending direction of the guide sliding rail (15) through the guide sliding rail (15) and the sliding block (125).
2. A duplex torsion testing apparatus according to claim 1, wherein: a positioning fixture block (1313) is arranged on the material carrying table (131), and the positioning fixture block (1313) is arranged on one surface of the material carrying groove (1311) contacted with the workpiece (3);
the workpiece (3) is limited by the positioning fixture block (1313) and the material bearing groove (1311), so that the workpiece (3) is positioned.
3. A duplex torsion testing apparatus according to claim 1, wherein: the material bearing groove (1311) is provided with mounting holes (1312) on three adjacent surfaces which are in contact with the workpiece (3), and the mounting holes (1312) are fixedly provided with magnets (132) for adsorbing the workpiece (3).
4. A duplex torsion testing apparatus according to claim 1, wherein: the torsion unit (12) further comprises a driving wheel (123), the torsion module (124) further comprises driven wheels (1241), the number of the driving wheels (123) is consistent with that of the torsion module (124), a driving shaft (1221) is connected to the rotating part of the motor (122), and the driving wheels (123) are fixedly connected to the driving shaft (1221);
The driven wheel (1241) is connected with the rotating shaft (1243), and the motor (122) drives the driving wheel (123) to rotate, so that the driving wheel (123) drives the driven wheel (1241) to rotate, and the rotating shaft (1243) connected to the driven wheel (1241) rotates.
5. The duplex torsion testing apparatus according to claim 4, wherein: the torsion module (124) further comprises a bearing (1242), the bearing (1242) is mounted on the rotating shaft (1243), and the bearing (1242) is fixed on the connecting support (121), so that the torsion module (124) is arranged on the supporting structure.
6. A duplex torsion testing apparatus according to claim 1, wherein: the detection assembly (2) comprises a detection unit (22) for detection and a light source (23), wherein the light source (23) is arranged between the detection unit (22) and the workpiece (3), and the light source (23) is used for irradiating the workpiece (3).
7. The duplex torsion testing apparatus according to claim 6, wherein: the light source (23) comprises a refraction module, and light generated by the light source (23) is refracted onto the workpiece (3) through the refraction module, so that the detection direction of the detection unit (22) is perpendicular to the irradiation direction of the light source (23).
8. The duplex torsion testing apparatus according to claim 6, wherein: the detection assembly (2) further comprises a fixed plate (21); the fixing plate (21) is used for connecting the detection assembly (2) into a whole;
The fixed plate (21) is in sliding connection with the detection unit (22); the fixing plate (21) is provided with an adjusting screw (24), and the position of the detecting unit (22) on the fixing plate (21) is adjusted through the adjusting screw (24), so that the distance between the detecting unit (22) and the workpiece (3) is adjusted.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010041504.3A CN111122144B (en) | 2020-01-15 | 2020-01-15 | Double-station torsion testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010041504.3A CN111122144B (en) | 2020-01-15 | 2020-01-15 | Double-station torsion testing device |
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| CN111122144A CN111122144A (en) | 2020-05-08 |
| CN111122144B true CN111122144B (en) | 2024-06-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4121494A1 (en) * | 1991-06-28 | 1993-01-07 | Wilfried Dr Ing Pinzl | Automatic service life determining appts. for cold shaping tool - uses feed device with vibration longitudinal feeder, separator and rotation elements, depth measurement device and evaluation unit |
| DE19813575A1 (en) * | 1998-03-27 | 1999-10-07 | Bielomatik Leuze & Co | Curl testing device for paper sheet |
| RU79334U1 (en) * | 2008-07-23 | 2008-12-27 | Открытое акционерное общество "Пермский моторный завод" | DRIVING BOX |
| CN107812866A (en) * | 2017-10-25 | 2018-03-20 | 吉林大学 | Full-automatic twisted torsion bar spring tension processing experiment platform |
| CN207336265U (en) * | 2017-11-10 | 2018-05-08 | 卡塔罗精密部件（苏州）有限公司 | A kind of torsionspring testing fatigue fitting device |
| CN109731804A (en) * | 2018-12-29 | 2019-05-10 | 上海工程技术大学 | A kind of torque and size detecting device of automobile-used torsional spring |
| CN209690082U (en) * | 2019-08-13 | 2019-11-26 | 北京驳凡科技有限公司 | A kind of bending test apparatus |
| CN211602378U (en) * | 2020-01-15 | 2020-09-29 | 博众精工科技股份有限公司 | Double-station torsion testing device |
-
2020
- 2020-01-15 CN CN202010041504.3A patent/CN111122144B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4121494A1 (en) * | 1991-06-28 | 1993-01-07 | Wilfried Dr Ing Pinzl | Automatic service life determining appts. for cold shaping tool - uses feed device with vibration longitudinal feeder, separator and rotation elements, depth measurement device and evaluation unit |
| DE19813575A1 (en) * | 1998-03-27 | 1999-10-07 | Bielomatik Leuze & Co | Curl testing device for paper sheet |
| RU79334U1 (en) * | 2008-07-23 | 2008-12-27 | Открытое акционерное общество "Пермский моторный завод" | DRIVING BOX |
| CN107812866A (en) * | 2017-10-25 | 2018-03-20 | 吉林大学 | Full-automatic twisted torsion bar spring tension processing experiment platform |
| CN207336265U (en) * | 2017-11-10 | 2018-05-08 | 卡塔罗精密部件（苏州）有限公司 | A kind of torsionspring testing fatigue fitting device |
| CN109731804A (en) * | 2018-12-29 | 2019-05-10 | 上海工程技术大学 | A kind of torque and size detecting device of automobile-used torsional spring |
| CN209690082U (en) * | 2019-08-13 | 2019-11-26 | 北京驳凡科技有限公司 | A kind of bending test apparatus |
| CN211602378U (en) * | 2020-01-15 | 2020-09-29 | 博众精工科技股份有限公司 | Double-station torsion testing device |
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