Multi-shaft torsion testing machine

Abstract

The utility model relates to a multi-shaft torsion testing machine, which comprises a fixed seat; the torsion sensing assembly is arranged on the fixed seat; the fixed clamping seat is connected to the torsion sensing assembly; the rotary clamping seat is provided with a rotary part, a rotary arm, a sliding rail, a sliding table assembly, an encoder and a rotary clamping part, the rotary part can rotate relative to the fixed clamping part, one end of the rotary arm is fixedly arranged on the rotary part, the sliding rail is arranged at the other end of the rotary arm, the sliding table assembly is arranged on the sliding rail, the encoder is arranged on the sliding table assembly, and the rotary clamping part is arranged on the encoder. The rotary clamping part is connected with an encoder; the driving device is arranged on the fixed seat and is connected to the rotating arm; therefore, the torsion sensor can be used for testing the torsion of the multi-shaft pivot piece, the sliding table assembly can be used for being matched with the pivoting track of the multi-shaft pivot piece to change the rotating radius, then the encoder is used for detecting to obtain the actual rotating angle of the multi-shaft pivot piece, and then the accurate torsion test of the multi-shaft pivot piece is achieved.

Description

Technical Field

[0001] The utility model relates to a torsion testing machine, especially a multi-axis torsion testing machine for a multi-axis pivot coupling. Background Art

[0002] The existing torsion testing machine, especially the one for measuring the torsion of a pivot member, has a first fixture at its central position. The bottom end of the first fixture is connected to a force sensor. There is also a second fixture which can rotate relative to the first fixture. The pivot member has a shaft core and a connecting piece. The connecting piece is connected to the shaft core and can rotate relative to the shaft core. One end of the shaft core of the pivot member is fixed to the first fixture, and the connecting piece is fixed to the second fixture. After the second fixture rotates a specific angle with the axial direction of the shaft core as the rotation center, the torsion value of the pivot member is detected by the force sensor.

[0003] However, the aforementioned torsion testing machine is mainly for measuring the torsion of a single-shaft-core pivot member. If it is used to test a multi-axis pivot member, the rotation angle of the second fixture is different from the actual rotation angle of the multi-axis pivot member, resulting in inaccurate test results. Therefore, in view of the above problems and disadvantages, it is really necessary to make improvements. Summary of the Utility Model

[0004] In view of the disadvantages and deficiencies of the existing technology, the utility model provides a multi-axis torsion testing machine, which can accurately test the torsion of a multi-axis pivot member by setting a slide table assembly and an encoder.

[0005] To achieve the above purpose, the technical means adopted by the utility model is to design a multi-axis torsion testing machine, which includes:

[0006] A fixed seat;

[0007] A torsion sensing assembly, which is arranged on the fixed seat;

[0008] A fixed clamping seat, which has a fixed clamping part and a shaft part, and the fixed clamping seat is connected to the torsion sensing assembly with the shaft part;

[0009] A rotating clamping seat, which has a rotating part, a rotating arm, a slide rail, a slide table assembly, an encoder and a rotating clamping part. The rotating part is sleeved and positioned relative to the fixed clamping part so as to be rotatable on the shaft part. One end of the rotating arm is fixedly arranged on the rotating part. The slide rail is arranged at the other end of the rotating arm. The slide table assembly is movably arranged on the slide rail along the slide rail. The encoder has a sensing part and a sensing shaft. The sensing shaft is rotatably arranged through the sensing part relative to the sensing part. The encoder is arranged on the slide table assembly. The rotating clamping part has a chuck and a pivot joint. The rotating clamping part is connected to the sensing shaft with the pivot joint, and the chuck and the sensing shaft can rotate synchronously;

[0010] A driving device is disposed on the fixed base and connected to the rotating arm.

[0011] Furthermore, in the multi-axis torque testing machine, the slide table assembly includes a lower moving table, a lower positioning seat, an upper moving table, and an upper guide rod. The lower moving table is movably disposed on the slide rail along the slide rail. The lower positioning seat is penetrated with a positioning hole, and the lower positioning seat is fixed on the lower moving table. The upper guide rod is movably penetrated through the positioning hole, and both ends of the upper guide rod are fixed on the upper moving table.

[0012] Furthermore, in the multi-axis torque testing machine, the encoder further includes a connecting seat. The connecting seat is fixed on the slide table assembly. The sensing portion is disposed on the connecting seat, and both ends of the sensing shaft are respectively rotatably penetrated through the sensing portion.

[0013] Furthermore, in the multi-axis torque testing machine, the connecting seat is a sheet body with a C-shaped cross section, and both ends of the sensing shaft respectively penetrate through the upper and lower opposite positions of the connecting seat.

[0014] Furthermore, in the multi-axis torque testing machine, the torque sensing assembly includes a sensor, a fixing bracket, a bearing, and a force receiving arm. The sensor is disposed on the fixed base. One end of the fixing bracket is disposed on the sensor. The bearing is installed at the other end of the fixing bracket. One end of the force receiving arm is disposed on the bearing, and the other end of the force receiving arm is connected to the other end of the shaft portion relative to the fixed clamping portion.

[0015] The advantages of the present invention are that in addition to the function of testing the torque of the multi-axis pivot member by the torque sensor, the slide table assembly can be used to change the rotation radius in cooperation with the pivot trajectory of the multi-axis pivot member, and finally the actual rotation angle of the multi-axis pivot member can be detected by the encoder, so as to achieve accurate torque testing for the multi-axis pivot member. Description of the Drawings

[0016] Figure 1 It is a three-dimensional external view of the present invention.

[0017] Figure 2 It is another external view of the present invention.

[0018] Figure 3 It is a partially enlarged side view of the present invention.

[0019] Figure 4 It is a partial exploded view of the present invention.

[0020] Figure 5 It is another partial exploded view of the present invention.

[0021] Figure 6 This is a partial exploded view of the fixed clamp base of the present utility model.

[0022] Figure 7 This is a schematic diagram of the use of the present utility model.

[0023] Figure 8 This is another schematic diagram of the use of the present utility model. Detailed implementation manners

[0024] The following further elaborates on the technical means adopted by the present utility model to achieve the intended creative purpose in conjunction with the drawings and the preferred embodiments of the present utility model.

[0025] Please refer to Figure 1 and Figure 2 As shown, the multi-axis torque testing machine of the present utility model includes a fixed base 10, a torque sensing assembly 20, a fixed clamp base 30, a rotating clamp base 40, and a driving device 50.

[0026] The fixed base 10 is a sheet body, which has a top surface 11. The top surface 11 is a side surface facing upward. In this embodiment, a cover body 12 is further covered on the fixed base 10. The cover body 12 is penetrated with a cover hole 121, but it is not limited thereto, and the cover body 12 may not be provided.

[0027] Please refer to Figure 2 and Figure 6 As shown, the torque sensing assembly 20 includes a sensor 21, a fixed frame 22, a bearing 23, and a force receiving arm 24. The sensor 21 is disposed on the top surface 11 of the fixed base 10. One end of the fixed frame 22 is disposed on the sensor 21. The bearing 23 is installed at the other end of the fixed frame 22. One end of the force receiving arm 24 is disposed on the bearing 23. Thus, the force received by the force receiving arm 24 can be detected by the sensor 21.

[0028] The fixed clamp base 30 has a fixed clamping portion 31 and a shaft portion 32. The fixed clamping portion 31 and the shaft portion 32 are respectively located at two ends of the fixed clamp base 30. The fixed clamping portion 31 is a jig with a clamping and positioning function. Since this is prior art, it will not be described in detail here. The shaft portion 32 is a long rod. The fixed clamping portion 31 passes through the cover hole 121 of the cover body 12 with the shaft portion 32 and is connected to the other end of the force receiving arm 24 of the torque sensing assembly 20.

[0029] Please refer to Figures 2 to 5As shown, the rotary clamp base 40 has a rotary part 41, a rotary arm 42, a slide rail 43, a slide table assembly 44, an encoder 45 and a rotary clamping part 46. The rotary part 41 is sleeved and positioned on the shaft part 32 so as to be rotatable relative to the fixed clamping part 31. The sleeved positioning is an application of the prior art and its detailed structure will not be elaborated here. One end of the rotary arm 42 is fixedly arranged on the rotary part 41, and the slide rail 43 is arranged at the other end of the rotary arm 42. The slide table assembly 44 includes a lower moving table 441, a lower positioning seat 442, an upper moving table 443 and an upper guide rod 444. The lower moving table 441 is movably arranged on the slide rail 43 along the slide rail 43. The lower positioning seat 442 is transversely penetrated with a positioning hole 445. The lower positioning seat 442 is fixedly arranged on the upper surface of the lower moving table 441. The upper moving table 443 is a sheet body with an inverted U-shaped cross section, but not limited thereto. The upper guide rod 444 is movably penetrated through the positioning hole 445, and both ends of the upper guide rod 444 are fixedly arranged at both ends of the upper moving table 443, so that the upper moving table 443 and the lower moving table 441 can move relative to each other.

[0030] The encoder 45 has a connecting seat 451, a sensing part 452 and a sensing shaft 453. The connecting seat 451 is a sheet body with an L-shaped cross section, but not limited thereto. One side surface of it is fixedly arranged on the upper moving table 443. The sensing shaft 453 is rotatably penetrated through the sensing part 452 relative to the sensing part 452. The sensing part 452 is arranged on the connecting seat 451 and both ends of the sensing shaft 453 respectively rotatably penetrate through the sensing part 452. Thus, in addition to being stably positioned in the connecting seat 451, the L-shaped sheet body structure can also provide positions for the upper and lower parts for the sensing shaft 453 to penetrate through, having the effect of stabilizing the sensing shaft 453. In this embodiment, the sensing part 452 is used to detect the rotation angle of the sensing shaft 453. This is a standard component of the prior art and its detailed structure will not be elaborated here. The rotary clamping part 46 has a chuck 461 and a pivot joint 462. The chuck 461 and the pivot joint 462 are respectively located at both ends of the rotary clamping part 46. The rotary clamping part 46 is connected to both ends of the sensing shaft 453 by the pivot joint 462. Thus, the chuck 461 and the sensing shaft 453 can rotate synchronously. Specifically, it rotates around the sensing shaft 453 as the rotation center.

[0031] The driving device 50 is arranged on the top surface 11 of the fixed seat 10 and is connected to the rotary clamp base 40. In this embodiment, the driving device 50 is a motor, which is connected to the rotary arm 42 and can drive the rotary arm 42 to rotate around the rotation center of the rotary part 41. This is a standard component of the prior art and its detailed structure will not be elaborated here, but not limited thereto. The form of the driving device 50 can be changed according to the user's needs.

[0032] When the utility model is in use, please refer to Figure 2 、 Figure 3 、 Figure 7 and Figure 8As shown, a multi-axis pivot member 60 to be tested has one end clamped and fixed by a fixed clamping portion 31 of a fixed clamping seat 30, and the other end clamped and fixed by a rotating clamping portion 46 of a rotating clamping seat 40. During the test, a driving device 50 is used to drive the rotating arm 42 to rotate. The rotating arm 42 synchronously drives the rotating clamping portion 46 to rotate. During the rotation process, due to the structure of the multi-axis pivot member 60, it does not pivot concentrically, so the rotation radius will change. The slide table assembly 44 will synchronously move to change the rotation radius to conform to the rotation trajectory of the multi-axis pivot member 60. In addition, since the rotation angle of the multi-axis pivot member 60 is not equal to the rotation angle of the rotating arm 42, in order to rotate it to a predetermined correct angle, it is necessary to compensate for the difference between the two angles by the angle feedback of the encoder 45. For example, assume that the rotating arm 42 rotates 170 degrees, and actually the multi-axis pivot member 60 has rotated 180 degrees. Therefore, the 10-degree difference needs to be additionally driven by the rotation of the pivot joint 462 of the rotating clamping portion 46 relative to the connecting seat 451, so that the sensing shaft 453 rotates and the sensing portion detects this 10-degree angle difference.

[0033] Through the above process, in addition to the function of using the torque sensor 21 to test the torque of the multi-axis pivot member 60, the slide table assembly 44 can be used to change the rotation radius in cooperation with the rotation trajectory of the multi-axis pivot member 60. Finally, the actual rotation angle of the multi-axis pivot member 60 can be detected by the encoder 45, so as to achieve accurate torque testing for the multi-axis pivot member 60.

[0034] The above description is only a preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes or modifications using the above-disclosed technical content as an equivalent embodiment of equivalent changes. However, as long as it does not depart from the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiment based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A multi-axis torque testing machine, characterized in that: Include: A fixed seat; A torque sensing component, which is disposed on the fixing base; A fixed clamp seat, which has a fixed clamping portion and a shaft portion, and the fixed clamp seat is connected to the torque sensing component via the shaft portion; A rotating clamping seat, which has a rotating part, a rotating arm, a slide rail, a slide assembly, an encoder and a rotating clamping part, the rotating part can be set to the shaft part relative to the sleeve of the fixed clamping part, one end of the rotating arm is fixed to the rotating part, the slide rail is set at the other end of the rotating arm, the slide assembly can be movably set on the slide rail along the slide rail, the encoder has a sensing part and a sensing shaft, the sensing shaft can be rotatably penetrated in the sensing part relative to the sensing part, the encoder is set on the slide assembly, the rotating clamping part has a clamp and a pivot joint, the rotating clamping part is connected to the sensing shaft by the pivot joint, and the clamp and the sensing shaft can rotate synchronously; A driving device is arranged on the fixing seat and connected to the rotating arm.

2. The multi-axis torque testing machine according to claim 1, characterized in that: The slide assembly includes a lower movable platform, a lower positioning seat, an upper movable platform and an upper guide rod. The lower movable platform can be movably arranged on the slide rail along the slide rail. The lower positioning seat has a positioning hole passing through it. The lower positioning seat is fixed to the lower movable platform. The upper guide rod can be movably passed through the positioning hole, and the two ends of the upper guide rod are fixed to the upper movable platform.

3. The multi-axis torque testing machine according to claim 1 or 2, characterized in that: The encoder further comprises a connecting seat, which is fixed to the slide assembly. The sensing part is arranged on the connecting seat, and the two ends of the sensing shaft are respectively rotatable to penetrate the sensing part.

4. The multi-axis torque testing machine according to claim 3, characterized in that: The connecting seat is a sheet body with a U-shaped cross section, and the two ends of the induction shaft respectively penetrate the upper and lower relative positions of the connecting seat.

5. The multi-axis torque testing machine according to claim 4, characterized in that: The torque sensing assembly includes a sensor, a fixing frame, a bearing and a force-bearing arm. The sensor is arranged on the fixing seat, one end of the fixing frame is arranged on the sensor, the bearing is installed on the other end of the fixing frame, one end of the force-bearing arm is arranged on the bearing, and the other end of the force-bearing arm is connected to the other end of the shaft portion relative to the fixed clamping portion.

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