Outward rotation type torsion testing machine

Abstract

The utility model relates to an external rotation type torsion testing machine. The external rotation type torsion testing machine comprises a fixed seat; the torsion sensor is provided with a sensing shaft, and the torsion sensor is arranged on the fixed seat; one end of the coupling is connected to the sensing shaft; the supporting part is provided with a boss, a shaft hole penetrates through the boss, and the supporting part is fixedly arranged on the fixed seat; the fixed clamping seat is provided with a clamping part and a shaft part, and the shaft part of the fixed clamping seat penetrates through the shaft hole and is connected to the other end of the coupling; the rotary clamping seat is provided with a rotary seat and a clamping arm, and the rotary seat can be rotationally arranged on the boss relative to the boss; the driving device is arranged on the fixed seat and is connected to the clamping arm; according to the torsion sensor, the sensing shaft of the torsion sensor and the shaft part of the fixed clamping seat are coaxially arranged, the effect of no back clearance in the measurement process is achieved, the sensing shaft and the shaft part are connected through the coupling, and therefore torsion sensing errors caused by eccentricity are reduced.

Description

Technical Field

[0001] The utility model relates to a torque testing machine, in particular to an outward-rotating torque testing machine. Background Art

[0002] The torque testing machine of the prior art has a first clamp at its center. The bottom end of the first clamp is connected to one end of a force measuring arm. The other end of the force measuring arm is indirectly connected to a force sensor via a bearing. A second clamp is provided on the side of the torque testing machine. One end of the object to be tested is fixed to the first clamp, and the other end of the object to be tested is fixed to the second clamp. The second clamp is used to apply force and rotate the object to be tested with its axis as the rotation center, thereby achieving the purpose of testing its torque value.

[0003] However, in the aforementioned mechanism, in order to prevent the bearing from interfering with force transmission and causing inaccurate test values, the position where the force measuring arm is connected to the bearing cannot be locked, and a slight gap must be left. However, when a more precise torque test is required, the reserved gap can easily cause backlash during the test, resulting in inaccurate test results. Therefore, the aforementioned problems and shortcomings need to be improved. Utility Model Content

[0004] In view of the shortcomings and deficiencies of the prior art, the present invention provides an outward-rotating torque testing machine, which achieves the purpose of backlash-free torque measurement by coaxially arranging the sensing axis of the torque sensor and the axis of the fixed clamp.

[0005] To achieve the above-mentioned purpose, the technical means adopted by the present invention is to design an outward-rotating torque testing machine, which comprises:

[0006] a fixing seat having a top surface;

[0007] a torque sensor having a sensing shaft, the torque sensor being disposed on the fixing base, the sensing shaft protruding upward perpendicularly from the top surface of the fixing base;

[0008] a coupling, one end of which is connected to the sensing shaft;

[0009] A support portion having a boss with an axial hole extending therethrough, the support portion being fixedly mounted on the fixing seat;

[0010] a fixed clamp having a clamping portion and a shaft portion, wherein the fixed clamp is provided with the shaft portion passing through the shaft hole and connected to the other end of the coupling;

[0011] a rotating clamping seat having a rotating seat and a clamping arm, wherein the rotating seat is rotatably disposed on the boss relative to the boss, and the clamping arm has a clamping portion at the other end opposite to the rotating seat;

[0012] A driving device is arranged on the fixing seat and connected to the clamping arm.

[0013] Furthermore, in the external rotation torque testing machine, the rotating seat is an annular body with a hole in the center. The rotating seat is mounted on the shaft through the hole and can rotate relative to the shaft.

[0014] Furthermore, the external rotation torque testing machine further comprises a cover body, the cover body having a cover hole passing through it, the cover body is fixed to the fixing seat, and the shaft portion is passed through the cover hole.

[0015] Furthermore, in the external rotation torque testing machine, a plurality of bearings and a plurality of oil seals are provided between the rotating seat and the shaft.

[0016] The advantage of the present invention lies in that the sensing shaft of the torque sensor is coaxially arranged with the shaft portion of the fixed clamp. Compared with the prior art, the force measuring arm and bearing components can be omitted, thereby avoiding the disadvantage of interference with the measurement results due to rotational clearance generated during bearing rotation, achieving a backlash-free effect. The sensing shaft and the shaft portion are further connected by a coupling, thereby reducing torque sensing errors caused by eccentricity between the sensing shaft and the shaft portion after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional appearance diagram of the utility model.

[0018] Figure 2 It is a partial cross-sectional view of the internal structure of the utility model.

[0019] Figure 3 This is an exploded view of the main components of the present invention.

[0020] Figure 4 This is another exploded view of the main components of the present invention.

[0021] Figure 5 It is a cross-sectional view of the present utility model.

[0022] Figure 6 It is a partial cross-sectional view of the utility model.

[0023] Figure 7 This is another partial cross-sectional view of the present invention.

[0024] Figure 8 This is a test diagram of the utility model.

[0025] Figure 9 This is a top view of the utility model before testing.

[0026] Figure 10 This is a top view after testing of the present invention. DETAILED DESCRIPTION

[0027] The following is a combination of drawings and preferred embodiments of the present invention to further illustrate the technical means adopted by the present invention to achieve the predetermined creative purpose.

[0028] See also Figure 1 and Figure 2 As shown, the external rotation torque testing machine of the present invention includes a fixing base 10 , a torque sensor 20 , a coupling 30 , a supporting portion 40 , a fixing clamping base 50 , a rotating clamping base 60 and a driving device 70 .

[0029] The fixing base 10 is a single piece having a top surface 11 which is a side surface facing upward. In this embodiment, a cover 12 is further provided on the fixing base 10 and a cover hole 121 is passed through the cover 12. However, the present invention is not limited thereto and the cover 12 may be omitted.

[0030] See also Figures 2 to 4 As shown, the torque sensor 20 has a sensing shaft 21. The torque sensor 20 is disposed on the top surface 11 of the fixing base 10. The sensing shaft 21 protrudes upward. The torque sensor 20 is a standard component of the prior art, and its detailed structure is not repeated here.

[0031] See also Figures 3 to 5 and Figure 7 As shown, one end of the coupling 30 is connected to the sensing shaft 21. Specifically, the sensing shaft 21 is passed through and fixed to one end of the coupling 30. The coupling 30 is a standard component of the prior art, and its detailed structure is not repeated here.

[0032] See also Figures 2 to 4 As shown, the support portion 40 in this embodiment is in the shape of a rectangular box, which is fixed on the top surface 11 of the fixing base 10, and a boss 41 is provided on the top of the support portion 40. The boss 41 passes through an axial hole 42, and the axial hole 42 passes through the interior of the support portion 40. However, this is not limited to this. The form of the support portion 40 can be changed according to user needs.

[0033] See also Figures 2 to 6 As shown, the fixing clamp seat 50 has a clamping portion 51 and a shaft portion 52. The clamping portion 51 and the shaft portion 52 are respectively located at the two ends of the fixing clamp seat 50. The clamping portion 51 is a fixture with a clamping and positioning function. This is the existing technology and will not be repeated here. The shaft portion 52 is a long rod. The fixing clamp seat 50 is passed through the cover hole 121 of the cover body 12 and the shaft hole 42 of the boss 41 with the shaft portion 52, and is connected to the other end of the coupling 30.

[0034] The rotating clamping seat 60 has a rotating seat 61 and a clamping arm 62. The rotating seat 61 is an annular body with a sleeve hole 611 in the center. The rotating seat 61 is sleeved on the shaft portion 52 with the sleeve hole 611 and can rotate relative to the boss 41 and the shaft portion 52 about the axis of the shaft portion 52. In this embodiment, a plurality of bearings and a plurality of oil seals are provided between the rotating seat 61 and the shaft portion 52, but the present invention is not limited to this. The form of the rotating seat 61 can be changed according to user needs; the clamping arm 62 has a clamping portion 621 at the other end relative to the rotating seat 61. The clamping portion 621 has the function of clamping the workpiece. This is an application of the existing technology and its detailed structure will not be repeated.

[0035] The driving device 70 is disposed on the top surface 11 of the fixed base 10 and is connected to the rotating clamping base 60. In this embodiment, the driving device 70 is a motor, which is connected to the clamping arm 62 and can drive the clamping arm 62 to rotate about the rotation center of the rotating base 61. This is a standard component of the prior art, and its detailed structure will not be repeated here, but it is not limited to this. The driving device 70 can be changed according to user needs.

[0036] When using this utility model, please refer to Figures 8 to 10 As shown, one end of the axis core of a pivot member 80 to be tested is fixed to the clamping portion 51 of the fixed clamp seat 50. One side of the pivot member 80 has a piece for connection, and the piece is clamped and fixed by the clamping portion 621 of the rotating clamp seat 60. During the test, the driving device 70 is used to drive the rotating clamp seat 60 to rotate, and the clamping arm 62 synchronously drives the clamping portion 621 to rotate. Therefore, the piece of the pivot member 80 fixed to the clamping portion 621 also rotates synchronously, thereby achieving the function of using the torque sensor 20 to test the torque of the pivot member 80. In the above process, the torque sensor 20 is used to test the torque of the pivot member 80. The sensing shaft 21 of the force sensor 20 is coaxially arranged with the shaft portion 52 of the fixing clamp 50. Compared with the prior art, the force measuring arm and bearing components can be omitted, thereby avoiding the disadvantage of interference with the measurement results due to rotational clearance generated during bearing rotation, achieving a backlash-free effect. Because the sensing shaft 21 and the shaft portion 52 may become eccentric and non-coaxial during installation, which may affect the test results, the sensing shaft 21 and the shaft portion 52 are connected by a coupling 30 to reduce torque sensing errors caused by eccentricity.

[0037] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any person having ordinary knowledge in the technical field can make some changes or modifications to the technical contents disclosed above as equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An outward-rotating torque testing machine, characterized in that: Include: a fixing seat having a top surface; a torque sensor having a sensing shaft, the torque sensor being disposed on the fixing base, the sensing shaft protruding upward perpendicularly from the top surface of the fixing base; a coupling, one end of which is connected to the sensing shaft; A support portion having a boss with an axial hole extending therethrough, the support portion being fixedly mounted on the fixing seat; a fixed clamp having a clamping portion and a shaft portion, wherein the fixed clamp is provided with the shaft portion passing through the shaft hole and connected to the other end of the coupling; a rotating clamping seat having a rotating seat and a clamping arm, wherein the rotating seat is rotatably disposed on the boss relative to the boss, and the clamping arm has a clamping portion at the other end opposite to the rotating seat; A driving device is arranged on the fixing seat and connected to the clamping arm.

2. The external rotation torque testing machine according to claim 1, characterized in that: The rotating seat is an annular body with a sleeve hole in the center. The rotating seat is sleeved on the shaft portion through the sleeve hole and can rotate relative to the shaft portion.

3. The external rotation torque testing machine according to claim 1 or 2, characterized in that: The invention further comprises a cover body, wherein the cover body passes through a cover hole, the cover body is fixed on the fixing seat, and the shaft portion passes through the cover hole.

4. The external rotation torque testing machine according to claim 3, characterized in that: A plurality of bearings and a plurality of oil seals are arranged between the rotating seat and the shaft portion.

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