Torque testing fixture and torque testing machine

Abstract

The utility model discloses a kind of torsion test fixture and torsion testing machine, and torsion test fixture includes positioning mechanism and rotating mechanism.Positioning mechanism is used to connect with the first component of product;Rotating mechanism is rotationally cooperated with positioning mechanism, and it includes matching piece and bearing piece, matching piece is equipped with matching groove, matching groove has arc side wall, the axis of arc side wall is parallel to first direction, arc side wall is used to cooperate with the arc surface of second component, bearing piece is rotationally connected with matching piece, bearing piece can rotate around parallel to the rotation axis of first direction to with matching groove opposite, and second component can be pushed to arc surface and arc side wall adhere, to second component is fixed in matching groove, bearing piece is used to connect torsion testing machine, and second component can be driven under the drive of torsion testing machine to rotate around parallel to the rotation axis of first direction relative to first component.The torsion test fixture of the utility model can improve the fixing effect of the product with arc surface.

Description

Technical Field

[0001] This utility model relates to the field of torque testing technology, and in particular to a torque testing fixture and a torque testing machine. Background Technology

[0002] After product manufacturing is completed, a torque test is typically required. The product has a first component and a second component, which are rotatably connected. During testing, the first and second components are respectively fixed by a fixture, and then a torque testing machine drives the fixture to rotate the first and second components relative to each other. As the first component rotates relative to the second component, the torque testing machine collects the torque exerted during this rotation to complete the torque test. In existing technology, when the outer surface of the second component is curved, the fixture's fixation effect on the product is poor. During the torque test, the product may detach from the fixture, resulting in inaccurate torque test results. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a torque testing fixture and a torque testing machine, which can improve the fixing effect on products with curved surfaces.

[0004] The first aspect of this utility model provides a torque testing fixture, which includes a positioning mechanism and a rotating mechanism. The positioning mechanism is used to connect with a first component of a product; the rotating mechanism is rotatably engaged with the positioning mechanism and includes a mating part and a supporting part. The mating part has a mating groove with an arcuate sidewall. The axis of the arcuate sidewall is parallel to a first direction. The arcuate sidewall is used to mate with the arcuate surface of a second component rotatably mounted on the first component. The supporting part is rotatably connected to the mating part. The supporting part can rotate about a pivot parallel to the first direction until it is opposite to the mating groove, and can push the second component until the arcuate surface fits against the arcuate sidewall to fix the second component in the mating groove. The supporting part is used to connect to a torque testing machine and can rotate under the drive of the torque testing machine to drive the second component to rotate relative to the first component about a pivot parallel to the first direction.

[0005] The torque testing fixture provided by the first aspect of this utility model has at least the following beneficial effects: The positioning mechanism can fix the first component of the product, and the rotating mechanism can fix the second component of the product. Driven by the torque testing machine, the second component can rotate relative to the first component, thus completing the torque test. The mating part has a mating groove with an arc-shaped sidewall. The mating groove mates with the second component. The holding member can move to be opposite the mating groove to prevent the second component from exiting the groove. The holding member can also push the second component until its arc-shaped surface fits against the arc-shaped sidewall, reducing the risk of the product detaching from the torque testing fixture during the torque test, thereby improving the fixing effect on products with arc-shaped surfaces.

[0006] In one embodiment of this implementation, the mating groove has a limiting sidewall, which is parallel to the first direction and opposite to the arc sidewall. When the abutment rotates, it can push the second component to slide along the arc sidewall until it abuts against the limiting sidewall.

[0007] In one embodiment of this implementation, the abutting member has an abutting surface formed thereon, the limiting sidewall is perpendicular to the second direction, the second direction is perpendicular to the first direction, and the abutting member can be rotated so that the abutting surface is perpendicular to the third direction, so that the abutting surface is opposite to the mating groove, and the abutting surface and the limiting sidewall abut against the second component from opposite sides of the axis in the circumferential direction, the third direction being perpendicular to the first and second directions.

[0008] In one embodiment of this implementation, the rotating mechanism further includes a first elastic element, one end of which is connected to a mating element and the other end of which is connected to a supporting element. The first elastic element can drive the supporting element to rotate so that the supporting element pushes the second component to fit the arc-shaped surface against the arc-shaped sidewall.

[0009] In one embodiment of this implementation, the positioning mechanism includes a first clamping block and a second clamping block, the first clamping block and the second clamping block are rotatably connected, the first clamping block has a clamping surface perpendicular to a second direction, the second direction is perpendicular to the first direction, and the second clamping block can rotate relative to the first clamping block about a rotating axis parallel to the first direction, so as to push the first component to abut against the clamping surface.

[0010] In one embodiment of this implementation, the positioning mechanism further includes a second elastic element, one end of which is connected to the first clamping block and the other end of which is connected to the second clamping block. The second elastic element can drive the second clamping block to rotate so as to push the first component toward the clamping surface.

[0011] In one embodiment of this implementation, the positioning mechanism further includes an adjusting block, which is rotatably engaged with the second clamping block about a pivot parallel to the first direction. The adjusting block is movably mounted on the first clamping block and can move relative to the first clamping block in the second direction, so that the position of the pivot of the second clamping block relative to the adjusting block changes in the second direction.

[0012] In one embodiment of this implementation, a strip groove is provided on the arc-shaped sidewall, the strip groove extending circumferentially along the axis, and the strip groove is used to cooperate with the annular boss on the second component.

[0013] In one embodiment of this implementation, the positioning mechanism further includes two adjusting bolts. The adjusting block has two adjusting holes arranged along the first direction. The adjusting bolts are threaded into the two adjusting holes one by one. When the adjusting bolts rotate, they can drive the adjusting block to rotate around a rotating shaft parallel to the third direction. The third direction is perpendicular to the first direction and the second direction.

[0014] The second aspect of this utility model provides a torque testing machine, which includes a base, a rotary driver, and a torque testing fixture according to any one of the first aspects of the embodiment. The positioning mechanism is mounted on the base, and the rotary driver is connected to the abutment and can drive the abutment to rotate.

[0015] The torque testing machine provided in the second aspect of this utility model has at least the following beneficial effects: By incorporating the torque testing fixture of the first aspect of this invention into a torque testing machine, the fixing effect on products with curved surfaces can be improved.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a three-dimensional structural schematic diagram of a torque testing fixture according to an embodiment of the first aspect of this utility model; Figure 2 yes Figure 1 Top view of the torque testing fixture; Figure 3 yes Figure 1 Side view of the torque testing fixture; Figure 4 yes Figure 1 A schematic diagram of the structure of the mating parts; Figure 5 yes Figure 1 A schematic diagram of the structure of the supporting component; Figure 6 yes Figure 1 A structural diagram of the product.

[0018] Figure label: Torque testing fixture 100; positioning mechanism 10; first clamping block 11; second clamping block 12; second elastic element 13; adjusting block 14; adjusting hole 141; adjusting bolt 15; rotating mechanism 20; mating part 21; mating groove 211; arc side wall 2111; limiting side wall 2112; strip groove 2113; abutting part 22; abutting surface 221; insertion end 222; first elastic element 23; product 200; first component 210; second component 220; arc surface 230; central shaft hole 240; clamping part 250; testing direction 300. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0025] Please see Figures 1 to 4 , Figure 6 , Figure 1 This is a three-dimensional structural schematic diagram of the torque testing fixture 100 according to one embodiment of the first aspect of the present utility model; Figure 2 yes Figure 1 Top view of torque testing fixture 100; Figure 3 yes Figure 1 Side view of the torque testing fixture 100; Figure 4 yes Figure 1 A schematic diagram of the structure of the mating component 21; Figure 6 yes Figure 1 A structural schematic diagram of product 200. The first aspect of this utility model provides a torque testing fixture 100, which includes a positioning mechanism 10 and a rotating mechanism 20. The positioning mechanism 10 is used to connect with the first component 210 of the product 200; the rotating mechanism 20 is rotatably engaged with the positioning mechanism 10 and includes a mating part 21 and a holding part 22. The mating part 21 has a mating groove 211 with an arcuate sidewall 2111. The axis of the arcuate sidewall 2111 is parallel to the first direction. The arcuate sidewall 2111 is used to engage with the arcuate surface 230 of the second component 220 rotatably mounted on the first component 210. The holding part 22 is rotatably connected to the mating part 21. The holding part 22 can rotate about a pivot parallel to the first direction to be opposite to the mating groove 211 and can push the second component 220 until the arcuate surface 230 fits against the arcuate sidewall 2111 to fix the second component 220 in the mating groove 211. The holding part 22 is used to connect to a torque testing machine and can rotate under the drive of the torque testing machine to drive the second component 220 to rotate relative to the first component 210 about a pivot parallel to the first direction.

[0026] Specifically, the positioning mechanism 10 can be connected to the first component 210 of the product 200 by means of clamping, magnetic attraction, and threaded connection. The rotating mechanism 20 and the positioning mechanism 10 can rotate around a rotating axis parallel to the Z direction. In some embodiments, the rotating mechanism 20 and the positioning mechanism 10 can achieve rotational engagement through a shaft or bearing. In this embodiment, the rotating mechanism 20 and the positioning mechanism 10 are separately spaced to achieve rotational engagement. The opening of the mating groove 211 faces the Y direction so that the user can install the product 200 into the mating groove 211 along the Y direction. The abutment 22 can be rotated so that part of the abutment 22 is located on one side of the mating groove 211 along the Y direction, opposite to the mating groove 211. The abutment 22 has an insertion end 222 for connection to a torque testing machine.

[0027] It should be noted that the first component 210 and the second component 220 are connected by a shaft passing through the central shaft hole 240 on the product 200. The first component 210 can rotate relative to the second component 220 around the axis of the central shaft hole 240. When the product 200 is installed on the torque testing fixture 100, the central axis of the central shaft hole 240 is parallel to the Z direction. The torque testing machine can drive the holding member 22 to rotate along the testing direction 300 with the central axis of the central shaft hole 240 as the center, so that the holding member 22 and the mating member 21 can work together to drive the second component 220 to rotate in the same direction with the same center. During the process of clamping the second component 220 into the torque testing fixture 100, the user can first push the abutment 22 to rotate relative to the mating component 21, and make the part of the abutment 22 opposite to the mating groove 211 rotate away from the mating groove 211, so as to increase the gap between the abutment 22 and the mating groove 211. Then, the second component 220 can be inserted into the mating groove 211, and the arc-shaped surface 230 on the second component 220 can be made to face and abut against the arc-shaped sidewall 2111 of the mating groove 211. Next, the part of the abutment 22 opposite to the mating groove 211 can be rotated toward the mating groove 211, and the abutment 22 can be made to abut against the second component 220, so as to push the second component 220 until the arc-shaped surface 230 fits against the arc-shaped sidewall 2111, thereby completing the clamping of the second component 220 of the product 200.

[0028] Understandably, in the prior art, when the fixture fixes the second component 220 with the arc-shaped surface 230, the second component 220 is prone to sliding along the tangential direction of the arc-shaped surface 230, resulting in poor fixation of the product 200. When the abutment 22 pushes the second component 220 until the arc-shaped surface 230 and the arc-shaped sidewall 2111 are in contact, it can restrict the movement of the second component 220 relative to the mating component 21 and the abutment 22 along the tangential direction of the arc-shaped surface 230. This reduces the risk that the second component 220 will move unexpectedly relative to the rotating mechanism 20 when the rotating mechanism 20 drives the second component 220 to rotate, thereby reducing the risk of the second component 220 detaching from the torque testing fixture 100 and thus improving the accuracy of the torque test results.

[0029] The torque testing fixture 100 of this utility model has a positioning mechanism 10 that can fix the first component 210 of the product 200, and a rotating mechanism 20 that can fix the second component 220 of the product 200. The rotating mechanism 20 can also drive the second component 220 to rotate relative to the first component 210 under the drive of a torque testing machine, thereby completing the torque test on the product 200. A mating groove 211 with an arcuate sidewall 2111 is provided on the mating component 21. The mating groove 211 is used to mate with the second component 220. The holding component 22 can move to be opposite the mating groove 211 to prevent the second component 220 from exiting the mating groove 211. The holding component 22 can also push the second component 220 until its arcuate surface 230 is in contact with the arcuate sidewall 2111, thereby reducing the risk of the product 200 detaching from the torque testing fixture 100 during the torque test and improving the fixing effect on the product 200 with the arcuate surface 230.

[0030] Please see Figures 1 to 4 In one embodiment of this implementation, the mating groove 211 has a limiting sidewall 2112, which is parallel to the first direction and opposite to the arc sidewall 2111. When the abutment member 22 rotates, it can push the second component 220 to slide along the arc sidewall 2111 until it abuts against the limiting sidewall 2112.

[0031] Specifically, the limiting sidewall 2112 is parallel to the Z direction. It can be understood that two opposite directions are defined as the positive and negative directions of the normal direction parallel to the limiting sidewall 2112. The limiting sidewall 2112 is opposite to the arc sidewall 2111, allowing the holding member 22 to push the second component 220 along the arc sidewall 2111 until it abuts against the limiting sidewall 2112. The arc sidewall 2111 provides a radial force along the positive normal direction to the second component 220, while the limiting sidewall 2112 provides a supporting force along the negative normal direction to the second component 220. This restricts the movement of the second component 220 towards its opposite sides in the normal direction, reducing the risk of the second component 220 sliding along the arc sidewall 2111 during torque testing.

[0032] Please see Figures 1 to 5 , Figure 5 yes Figure 1 A schematic diagram of the structure of the abutment member 22. In one embodiment of this implementation, an abutment surface 221 is formed on the abutment member 22, and a limiting sidewall 2112 is perpendicular to a second direction, which is perpendicular to a first direction. The abutment member 22 is rotatable until the abutment surface 221 is perpendicular to a third direction, so that the abutment surface 221 is opposite to the mating groove 211, and the abutment surface 221 and the limiting sidewall 2112 abut against the second component 220 from opposite sides of the axis in the circumferential direction, with the third direction perpendicular to the first and second directions.

[0033] Specifically, the second direction is parallel to the X direction, and the third direction is parallel to the Y direction. The abutment surface 221, the arc-shaped sidewall 2111, and the limiting sidewall 2112 are arranged circumferentially along the axis. It can be understood that the limiting sidewall 2112 can apply a force parallel to the X direction to the second component 220, and the abutment surface 221 can apply a force parallel to the Y direction to the second component 220. The resultant force applied by the limiting sidewall 2112 and the abutment surface 221 to the second component 220 is directed towards the arc-shaped sidewall 2111, which enables the arc-shaped surface 230 of the second component 220 to fit more tightly with the arc-shaped sidewall 2111, which is beneficial to improving the fixing effect on the product 200.

[0034] Please see Figures 1 to 5 In one embodiment of this implementation, the rotating mechanism 20 further includes a first elastic member 23. One end of the first elastic member 23 is connected to the mating member 21, and the other end is connected to the abutment member 22. The first elastic member 23 can drive the abutment member 22 to rotate so that the abutment member 22 pushes the second component 220 to fit the arc surface 230 against the arc sidewall 2111.

[0035] Specifically, the first elastic element 23 is a spring that extends in a direction perpendicular to the Z direction and provides a force perpendicular to the Z direction to the abutment 22, causing the portion of the abutment 22 opposite to the mating groove 211 to move toward the mating groove 211. It is understood that the first elastic element 23 can continuously apply a driving force to the abutment 22 to keep it pressed against the second component 220, thereby keeping the arc-shaped surface 230 in contact with the arc-shaped sidewall 2111. This maintains the fixing effect on the second component 220 during testing, which helps improve the stability of the torque testing fixture 100.

[0036] Please see Figures 1 to 4In one embodiment of this implementation, the positioning mechanism 10 includes a first clamping block 11 and a second clamping block 12. The first clamping block 11 and the second clamping block 12 are rotatably connected. The first clamping block 11 has a clamping surface perpendicular to a second direction, which is perpendicular to the first direction. The second clamping block 12 can rotate relative to the first clamping block 11 about a pivot parallel to the first direction to push the first component 210 to abut against the clamping surface.

[0037] Specifically, the first clamping block 11 and the second clamping block 12 are arranged along the X direction. The second clamping block 12 rotates relative to the first clamping block 11 about a rotation axis parallel to the Z direction. The clamping surface is used to abut against the clamping portion 250 on the first component 210. It can be understood that during the clamping process of the first component 210, the user can rotate the second clamping block 12 to the open position to increase the gap between the portion of the second clamping block 12 opposite to the clamping surface and the first clamping block 11. Then, the user can insert the clamping portion 250 into the gap. Next, the user can rotate the second clamping block 12 to the clamping position to decrease the gap between the portion of the second clamping block 12 opposite to the clamping surface and the first clamping block 11, and the second clamping block 12 pushes the clamping portion 250 toward the clamping surface, thereby enabling the first clamping block 11 and the second clamping block 12 to clamp and fix the first component 210 from opposite sides along the X direction. When the rotating mechanism 20 drives the second component 220 to rotate along the test direction 300, the second component 220 will apply a torque along the test direction 300 to the first component 210. The clamping surface can apply a force parallel to the X direction to the first component 210 and balance the torque of the second component 220 acting on the first component 210 so that the first component 210 remains stationary. With this setting, on the one hand, the torque test fixture 100 can keep clamping the product 200 during the test, thereby reducing the risk of the product 200 falling out of the clamping of the torque test fixture 100. On the other hand, it can simplify the structure of the torque test fixture 100.

[0038] Please see Figures 1 to 4 In one embodiment of this implementation, the positioning mechanism 10 further includes a second elastic member 13. One end of the second elastic member 13 is connected to the first clamping block 11, and the other end is connected to the second clamping block 12. The second elastic member 13 can drive the second clamping block 12 to rotate so as to push the first component 210 toward the clamping surface.

[0039] Specifically, the second elastic element 13 is a spring that extends along the X direction and is disposed within the gap formed between the first clamping block 11 and the second clamping block 12. When the first clamping block 11 and the second clamping block 12 clamp the first component 210, the second elastic element 13 is in a compressed state. It can be understood that when the second elastic element 13 is in a compressed state, it can provide a driving force to the first clamping block 11 and the second clamping block 12, driving the second clamping block 12 to rotate relative to the first clamping block 11 and causing the portion of the second clamping block 12 opposite to the clamping surface to move towards the clamping surface. This allows the first clamping block 11 and the second clamping block 12 to clamp the first component 210. By providing the second elastic element 13, the first clamping block 11 and the second clamping block 12 can maintain the clamping state of the first component 210 during the test, thus maintaining the fixing effect on the first component 210 and improving the stability of the torque testing fixture 100.

[0040] Please see Figures 1 to 4 In one embodiment of this implementation, the positioning mechanism 10 further includes an adjusting block 14, which is rotatably engaged with the second clamping block 12 about a pivot parallel to the first direction. The adjusting block 14 is movably mounted on the first clamping block 11 and can move relative to the first clamping block 11 in the second direction, so that the position of the pivot of the second clamping block 12 relative to the adjusting block 14 changes in the second direction.

[0041] Specifically, the adjusting block 14 is located on one side of the first clamping block 11 along the X direction. It is understood that the clamping portion 250 in different products 200 has different dimensions in the X direction. When the adjusting block 14 moves, it can drive the second clamping block 12 to move relative to the first clamping block 11 along the X direction. This changes the distance between the portion of the second clamping block 12 opposite to the clamping surface and the clamping surface when the second clamping block 12 is in the open position, allowing the positioning mechanism 10 to adapt to clamping first components 210 of different sizes. First components 210 made of different materials require different clamping forces. By moving the second clamping block 12 through the adjusting block 14, the distance between the first clamping block 11 and the second clamping block 12 used to set the second elastic member 13 in the X direction can be changed. This changes the elongation of the second elastic member 13 when the second clamping block 12 is in the clamping position, thereby changing the clamping force of the positioning mechanism 10 on first components 210 of the same size, which is beneficial for improving the adaptability of the torque testing fixture 100.

[0042] Please see Figures 1 to 4 In one embodiment of this implementation, a strip groove 2113 is provided on the arc-shaped sidewall 2111. The strip groove 2113 extends circumferentially along the axis and is used to cooperate with the annular boss on the second component 220.

[0043] Specifically, a portion of the arc-shaped sidewall 2111 is recessed to form a strip groove 2113. Under certain conditions, an annular boss is formed on the arc-shaped surface 230, and a strip groove 2113 is opened on the arc-shaped sidewall 2111. The annular boss can extend into the strip groove 2113. On the one hand, this allows the arc-shaped sidewall 2111 to fit more tightly with the arc-shaped surface 230, which is beneficial to improving the clamping effect of the rotating mechanism 20 on the second component 220. On the other hand, the groove wall of the strip groove 2113 can provide a force along the Z direction to the annular boss to restrict the movement of the product 200 relative to the torque testing fixture 100 along the Z direction, which is beneficial to improving the fixing effect of the torque testing fixture 100 on the product 200.

[0044] Please see Figures 1 to 4 In one embodiment of this implementation, the positioning mechanism 10 further includes two adjusting bolts 15. The adjusting block 14 has two adjusting holes 141 arranged along the first direction. The adjusting bolts 15 are threadedly engaged with the two adjusting holes 141 in a corresponding manner. When the adjusting bolts 15 rotate, they can drive the adjusting block 14 to rotate around a rotating shaft parallel to the third direction. The third direction is perpendicular to the first direction and the second direction.

[0045] Specifically, the axis of the adjusting hole 141 is parallel to the X direction, the two adjusting holes 141 are arranged along the Z direction, the adjusting hole 141 passes through the adjusting block 14, the axis of the adjusting bolt 15 is parallel to the X direction, the adjusting bolt 15 passes through the adjusting hole 141 through the adjusting block 14, so that part of the adjusting bolt 15 extends from the adjusting block 14 toward the first clamping block 11, the part of the adjusting bolt 15 located in the adjusting hole 141 is threaded with the adjusting block 14, and the part of the adjusting bolt 15 extending from the adjusting block 14 toward the first clamping block 11 is threaded with the first clamping block 11.

[0046] It should be noted that the clamping part 250 has a first surface and a second surface formed on opposite sides along the X direction. When the positioning mechanism 10 clamps the first part 210, the first clamping block 11 abuts against the first surface and the second clamping block 12 abuts against the second surface to fix the first part 210 from opposite sides. In different products 200, the tilt angle between the first surface and the second surface is different.

[0047] It is understood that the adjusting bolt 15 can provide a force along the X direction to the adjusting block 14. The adjusting bolt 15 can rotate about a rotation axis parallel to the X direction. When the adjusting bolt 15 rotates, it moves relative to the first clamping block 11 along the X direction and pushes the adjusting block 14. When the two adjusting bolts 15 are rotated at different angles, the two adjusting screws move different distances relative to the first clamping block 11 along the X direction. At this time, the two adjusting bolts 15 exert different forces on the adjusting block 14. The two adjusting bolts 15 are arranged at intervals along the Z direction so that the force exerted by the two adjusting bolts 15 on the adjusting block 14 will generate a torque on the adjusting block 14 with an axis parallel to the Y direction. Under the action of this torque, the adjusting block 14 will drive the second clamping block 12 to rotate about a rotation axis parallel to the Y direction. This can improve the clamping effect of the positioning mechanism 10 on various products 200 with different inclination angles between the first surface and the second surface, which is beneficial to improving the adaptability of the torque testing fixture 100.

[0048] Please see Figures 1 to 6 The second aspect of this utility model provides a torque testing machine, which includes a base, a rotation driver and a torque testing fixture 100 according to any one of the first aspects of the embodiment. The positioning mechanism 10 is mounted on the base, and the rotation driver is connected to the support member 22 and can drive the support member 22 to rotate.

[0049] Specifically, the torque testing machine also includes a detection module, which is electrically connected to the rotation drive. The detection module is used to detect the torque on the first component 210 and the second component 220 when the supporting member 22 rotates.

[0050] It is understood that by adding the torque testing fixture 100 of the first aspect of this utility model to the torque testing machine, the fixing effect on the product 200 with the arc-shaped surface 230 can be improved.

[0051] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A torque testing fixture, characterized in that, include: A positioning mechanism for connecting to the first component of the product; A rotating mechanism, rotatably cooperating with the positioning mechanism, includes a mating component and a supporting component. The mating component has a mating groove with an arcuate sidewall. The axis of the arcuate sidewall is parallel to a first direction. The arcuate sidewall is used to mate with the arcuate surface of a second component rotatably mounted on the first component. The supporting component is rotatably connected to the mating component. The supporting component can rotate about a pivot parallel to the first direction to be opposite the mating groove, and can push the second component until the arcuate surface fits against the arcuate sidewall to fix the second component in the mating groove. The supporting component is used to connect to a torque testing machine and can rotate under the drive of the torque testing machine to drive the second component to rotate relative to the first component about a pivot parallel to the first direction.

2. The torque testing fixture according to claim 1, characterized in that, The mating groove has a limiting sidewall, which is parallel to the first direction and opposite to the arc sidewall. When the abutment rotates, it can push the second component to slide along the arc sidewall until it abuts against the limiting sidewall.

3. The torque testing fixture according to claim 2, characterized in that, The abutting member has an abutting surface formed thereon. The limiting sidewall is perpendicular to the second direction, which is perpendicular to the first direction. The abutting member is rotatable until the abutting surface is perpendicular to the third direction, so that the abutting surface is opposite to the mating groove, and the abutting surface and the limiting sidewall abut against the second component from opposite sides of the axis in the circumferential direction. The third direction is perpendicular to the first direction and the second direction.

4. The torque testing fixture according to claim 1, characterized in that, The rotating mechanism further includes a first elastic element, one end of which is connected to the mating member and the other end of which is connected to the abutment member. The first elastic element can drive the abutment member to rotate so that the abutment member pushes the second component to fit the arc-shaped surface against the arc-shaped sidewall.

5. The torque testing fixture according to claim 1, characterized in that, The positioning mechanism includes a first clamping block and a second clamping block, the first clamping block and the second clamping block are rotatably connected, the first clamping block has a clamping surface perpendicular to a second direction, the second direction is perpendicular to the first direction, and the second clamping block can rotate relative to the first clamping block about a pivot parallel to the first direction to push the first component to abut against the clamping surface.

6. The torque testing fixture according to claim 5, characterized in that, The positioning mechanism further includes a second elastic element, one end of which is connected to the first clamping block and the other end of which is connected to the second clamping block. The second elastic element can drive the second clamping block to rotate so as to push the first component toward the clamping surface.

7. The torque testing fixture according to claim 5, characterized in that, The positioning mechanism further includes an adjusting block, which is rotatably engaged with the second clamping block about a pivot parallel to the first direction. The adjusting block is movably mounted on the first clamping block and can move relative to the first clamping block along the second direction, so that the position of the pivot of the second clamping block relative to the adjusting block changes in the second direction.

8. The torque testing fixture according to claim 1, characterized in that, A strip groove is provided on the arc-shaped sidewall, the strip groove extends circumferentially along the axis, and the strip groove is used to cooperate with the annular boss on the second component.

9. The torque testing fixture according to claim 7, characterized in that, The positioning mechanism also includes two adjusting bolts. The adjusting block has two adjusting holes arranged along the first direction. The adjusting bolts are threaded into the two adjusting holes one by one. When the adjusting bolts rotate, they can drive the adjusting block to rotate around a rotating axis parallel to a third direction. The third direction is perpendicular to the first direction and the second direction.

10. A torque testing machine, characterized in that, The device includes a base, a rotary actuator, and a torque testing fixture according to any one of claims 1 to 9, wherein the positioning mechanism is mounted on the base, the rotary actuator is connected to the abutment and can drive the abutment to rotate.

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