A compression performance test fixture and its use method

Abstract

The present application provides a compression performance test fixture, including a fixture body and an auxiliary device, the fixture body includes a first clamping member and a second clamping member and a fastener for connecting the first clamping member and the second clamping member, the first clamping member and the second clamping member are used to place the workpiece to be tested, and the workpiece to be tested extends along the second direction. The auxiliary device is used to assist in positioning the clamping posture of the workpiece to be tested, and the auxiliary device includes: a third clamping member, a fourth clamping member and a positioning member, and one end of the workpiece to be tested is fitted with the third clamping member or the fourth clamping member. The auxiliary device is used to center the workpiece to be tested in the fixture body along the second direction and the third direction. The third clamping member and the fourth clamping member are fitted with the workpiece to be tested, not only to center the workpiece to be tested along the second direction, that is, the length direction of the workpiece to be tested. The setting of the positioning member facilitates the centering of the workpiece to be tested along the third direction, that is, the width direction of the workpiece to be tested.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical experiments, and in particular to a compression performance testing fixture and a method of using the same. Background Art

[0002] Carbon fiber composite materials are widely used in aerospace, automotive and other fields due to their excellent properties such as high specific strength and high specific modulus. In these application scenarios, components are often subjected to compressive loads, so it is very important to accurately test their compression performance. When conducting compression performance tests on carbon fiber, a fixture is required to clamp the carbon fiber workpiece to be tested. The workpiece to be tested needs to be accurately installed in the fixture. Any slight deviation will have a serious impact on the test results. In the prior art, the workpiece to be tested is manually installed in the fixture, which cannot accurately align the workpiece to be tested in the fixture. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present application provides a compression performance testing fixture and a method of using the same.

[0004] According to an embodiment of the present disclosure, a compression performance test fixture is provided, comprising:

[0005] A fixture body, comprising a first clamping member and a second clamping member, and a fastener for connecting the first clamping member and the second clamping member, wherein the first clamping member and the second clamping member are arranged along a first direction, a workpiece to be measured is placed between the first clamping member and the second clamping member, and the workpiece to be measured extends along a second direction;

[0006] An auxiliary device, used to assist in positioning the clamping posture of the workpiece to be measured, the auxiliary device comprising:

[0007] A third clamping member and a fourth clamping member, wherein the third clamping member and the fourth clamping member are arranged along the second direction, and in the second direction, the first clamping member and the second clamping member are arranged between the third clamping member and the fourth clamping member, and one end of the workpiece to be measured is in contact with the third clamping member or the fourth clamping member;

[0008] A positioning member is disposed between the first clamping member and the second clamping member, wherein a first side of the positioning member faces the workpiece to be measured, the first side is perpendicular to a third direction, and the first direction, the second direction and the third direction are perpendicular to each other;

[0009] The first side is in contact with the side wall of the workpiece to be measured, and a part of the structure of the first side extends in a direction away from the workpiece to be measured to form a slot, and at least a part of the fastener is disposed in the slot.

[0010] In some embodiments, along the first direction, a thickness of the positioning member is smaller than a distance between the first clamping member and the second clamping member.

[0011] In some embodiments, the auxiliary device further comprises a positioning bracket, a first slide groove is provided on a side of the positioning bracket facing the fixture body, and the first slide groove extends along the second direction;

[0012] The positioning member is slidably disposed in the first sliding groove.

[0013] In some embodiments, the auxiliary device further comprises a first base, a second slide groove is provided on a surface of the first base along the first direction, and the second slide groove extends along the second direction;

[0014] At least one of the third clamping member and the fourth clamping member is disposed in the second sliding groove.

[0015] In some embodiments, the fixture body also includes a second base arranged between the third clamping member and the fourth clamping member, the second base includes a vertically arranged support block and a top block, the support block extends along the second direction, the top block extends along the first direction, one end of the top block is in contact with the workpiece to be measured, and one side of the support block is respectively in contact with the third clamping member or the fourth clamping member.

[0016] The clamp body is defined to also include an L-shaped support block (named as the second base),

[0017] In some embodiments, along the second direction, the workpiece to be measured protrudes from the supporting block.

[0018] In some embodiments, the fastener passes through the first clamping member, the second clamping member, and the support block in sequence.

[0019] In some embodiments, the clamp body and the auxiliary device are separate structures.

[0020] A method for using a compression performance test fixture, comprising:

[0021] Using a fixture body to pre-clamp the workpiece to be measured; wherein a first clamping member of the fixture body, the workpiece to be measured and a second clamping member of the fixture body are stacked, and the first clamping member and the second clamping member are connected using a fastener of the fixture body to pre-clamp the workpiece to be measured;

[0022] The fixture body is arranged between the third clamping member and the fourth clamping member of the auxiliary device, the fastening member is inserted into the clamping groove of the positioning member of the auxiliary device, and one side of the third direction of the workpiece to be measured is fitted with the positioning member;

[0023] Adjust the third clamping member and / or the fourth clamping member so that one end of the workpiece to be measured along the second direction is in contact with one of the third clamping member and the fourth clamping member;

[0024] The fastener is locked, and the fixture body holding the workpiece to be measured is removed.

[0025] In some embodiments, locking the fastener includes: rotating the fastener using a wrench with a tightening torque greater than or equal to 1 N·m.

[0026] The technical solution provided by the embodiments of the present application may include the following beneficial effects: during the positioning process of the compression performance test fixture of the present application, the side wall surface of the workpiece to be tested can be fitted with the first side of the positioning member so that the workpiece to be tested has a precise fixed angle; and the fastener used to fasten the first clamping member and the second clamping member is located in the slot of the positioning member, and the slot limits the relative placement angle of the first clamping member and the second clamping member through the fastener, so that the extension directions of the first clamping member, the second clamping member and the workpiece to be tested are parallel, which is beneficial to detection accuracy and high assembly efficiency.

[0027] The fixture body is used to clamp the workpiece to be measured. The auxiliary device is used to center the workpiece to be measured in the fixture body along the second direction and the third direction. The third clamping member and the fourth clamping member fit with the workpiece to be measured, not only to center the workpiece to be measured along the second direction, that is, the length direction of the workpiece to be measured, but also the third clamping member and the fourth clamping member are used to limit and fix the workpiece to be measured, so as to facilitate the installation of the fasteners of the fixture body. The setting of the positioning member facilitates the centering of the workpiece to be measured along the third direction, that is, the width direction of the workpiece to be measured, and the card slot of the positioning member facilitates the accommodation of the fastener.

[0028] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0030] Figure 1 is a stereoscopic diagram of a compression performance test fixture according to an exemplary embodiment.

[0031] Figure 2 is a stereoscopic view of a fixture body of a compression performance testing fixture according to an exemplary embodiment.

[0032] Figure 3 The figure is a stereoscopic diagram of an auxiliary device of a compression performance test fixture according to an exemplary embodiment.

[0033] Figure 4 is a cross-sectional view of a compression performance test fixture according to an exemplary embodiment.

[0034] Reference numerals:

[0035] 1. Clamp body; 11. First clamping member; 111. Clamping plate; 112. Connecting ear; 12. Second clamping member; 13. Fastener; 14. Second base; 141. Support block; 142. Top block;

[0036] 2. Auxiliary device; 21. Third clamping member; 22. Fourth clamping member; 23. Positioning member; 231. Card slot; 24. Positioning bracket; 241. First slide slot; 25. First base; 251. Second slide slot;

[0037] 3. Workpiece to be tested. DETAILED DESCRIPTION

[0038] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0039] Carbon fiber composite materials are widely used in aerospace, automotive and other fields due to their excellent properties such as high specific strength and high specific modulus. In these application scenarios, components are often subjected to compressive loads, so it is very important to accurately test their compression performance. When conducting compression performance tests on carbon fiber, a fixture is required to clamp the carbon fiber workpiece to be tested. The workpiece to be tested needs to be accurately installed in the fixture. Any slight deviation will have a serious impact on the test results. In the prior art, the workpiece to be tested is installed in the fixture manually, which cannot accurately align the workpiece to be tested in the fixture, and the installation process is complicated.

[0040] When the compression performance test is performed on the workpiece to be tested, the size of the workpiece to be tested is fixed, and the compression performance data obtained from the test of the workpiece to be tested with a fixed size are more correlated. Researchers can more easily compare the data change patterns under different test conditions, eliminating the interference of the variable factor of the size of the workpiece to be tested, which is more conducive to in-depth analysis of the compression performance characteristics of the material itself, and provide a strong basis for the evaluation and optimization of material performance.

[0041] To solve the above technical problems, the compression performance test fixture of the present application is used to quickly center and install a workpiece of fixed size in the fixture body, making the installation process simple and accurate. The workpiece to be tested can be made of carbon fiber, metal or other materials.

[0042] like Figure 1 As shown, the compression performance test fixture includes a fixture body 1, which is used to clamp the workpiece 3 to be tested. The fixture body 1 can stably clamp and fix the workpiece 3 to be tested, providing stable test conditions for subsequent compression performance tests. Figure 2 As shown, the clamp body 1 includes a first clamping member 11, a second clamping member 12 and a fastener 13, and the first clamping member 11 and the second clamping member 12 are arranged along a first direction ( Figure 1 The workpiece 3 to be measured is placed between the first clamping member 11 and the second clamping member 12. The workpiece 3 to be measured is arranged along the second direction ( Figure 1 The workpiece 3 to be measured extends in the x direction (as shown in FIG. 1 ), and both ends of the workpiece 3 to be measured protrude from the first clamping member 11 and the second clamping member 12 in the second direction.

[0043] In some embodiments, the first direction is perpendicular to the second direction, the first direction is the direction of the thickness of the workpiece 3 to be measured, and the second direction is the direction of the length of the workpiece 3 to be measured. The fastener 13 penetrates the first clamping member 11 and the second clamping member 12 and connects the first clamping member 11, the workpiece 3 to be measured, and the second clamping member 12. Figure 1 In the example, the first direction is the z direction, the second direction is the x direction, and the third direction is the y direction. Figure 2 In the example, the first direction is the z direction, the second direction is the x direction, and the third direction is the y direction. Figure 3 , the first direction is the z direction, the second direction is the x direction, and the third direction is the y direction.

[0044] In some embodiments, Figure 1 and Figure 2 As shown, the first clamping member 11 and the second clamping member 12 are identical and symmetrically located on both sides of the workpiece 3 to be measured. The first clamping member 11 includes a clamping plate 111 and four connecting ears 112. The side of the clamping plate 111 close to the workpiece 3 to be measured is serrated to increase friction. The four connecting ears 112 are arranged along the width direction of the workpiece 3 to be measured ( Figure 1 and Figure 2 The four connecting ears 112 correspond to each other, and each of the four connecting ears 112 is provided with a through hole for the fastener 13 to pass through. The width of the workpiece 3 to be measured is the same as the width of the clamping plate 111. Figure 1 and Figure 2 ), the length of the workpiece 3 to be measured is greater than the length of the clamping plate 111 , so that both ends of the workpiece 3 to be measured extend out of both ends of the clamping plate 111 .

[0045] like Figure 1As shown, the compression performance test fixture also includes an auxiliary device 2, which is used to assist in positioning the clamping posture of the workpiece 3 to be tested, that is, to clamp the workpiece 3 to be tested in the fixture body 1 along the second direction ( Figure 1 The x direction shown in ) and the third direction ( Figure 1 y direction as shown) are all centered.

[0046] like Figure 3 As shown, the auxiliary device 2 includes a third clamping member 21, a fourth clamping member 22 and a positioning member 23, wherein the third clamping member 21 and the fourth clamping member 22 are arranged along the second direction ( Figure 3 In the second direction, the first clamping member 11 and the second clamping member 12 are located between the third clamping member 21 and the fourth clamping member 22, so as to facilitate centering the workpiece 3 to be measured in the second direction, wherein one end of the workpiece 3 to be measured is in contact with the third clamping member 21 or the fourth clamping member 22.

[0047] In some embodiments, the auxiliary device 2 only includes the third clamping member 21, but does not include the fourth clamping member 22. In the second direction, the third clamping member 21 is located on one side of the workpiece 3 to be measured, and the distance between the third clamping member 21 and the first clamping member 11 is fixed, so that when the third clamping member 21 is in contact with the end where the length of the workpiece 3 to be measured is located, the two ends of the length of the workpiece 3 to be measured extend out of the first clamping member 11 and the second clamping member 12 at the same distance, thereby achieving the purpose of centering in the length direction.

[0048] In other embodiments, the auxiliary device 2 only includes the fourth clamping member 22, but does not include the third clamping member 21. In the second direction, the fourth clamping member 22 is located on the other side of the workpiece 3 to be measured, and the distance between the fourth clamping member 22 and the first clamping member 11 is fixed, so that when the fourth clamping member 22 is in contact with the end where the length of the workpiece 3 to be measured is located, the two ends of the length of the workpiece 3 to be measured extend out of the first clamping member 11 and the second clamping member 12 at the same distance, thereby achieving the purpose of centering in the length direction.

[0049] In some other embodiments, the auxiliary device 2 includes a third clamping member 21 and a fourth clamping member 22. In the second direction, the third clamping member 21 and the fourth clamping member 22 are respectively located on both sides of the workpiece 3 to be measured, that is, the third clamping member 21 and the fourth clamping member 22 are respectively located at both ends of the length of the workpiece 3 to be measured. The distance between the third clamping member 21 and the first clamping member 11 or the second clamping member 12 is fixed, so that when the third clamping member 21 is in contact with one end of the length of the workpiece 3 to be measured, the two ends of the length of the workpiece 3 to be measured extend out of the first clamping member 11 and the second clamping member 12 at the same distance, thereby achieving the purpose of centering in the length direction. The fourth clamping member 22 is provided for the purpose of pressing against the workpiece 3 to be measured, so that the end of the workpiece 3 to be measured fits with the third clamping member 21, and the two ends of the workpiece 3 to be measured fit with the third clamping member 21 and the fourth clamping member 22 respectively. The third clamping member 21 and the fourth clamping member 22 can also be used to limit the workpiece 3 to be measured. When the fastener 13 is used to connect the first clamping member 11 and the second clamping member 12, the third clamping member 21 and the fourth clamping member 22 fix the workpiece 3 to be measured, avoid unnecessary displacement of the workpiece 3 to be measured, and improve the convenience and accuracy of installation.

[0050] In some other embodiments, Figure 1 and Figure 3 As shown, the auxiliary device 2 includes a third clamping member 21 and a fourth clamping member 22, in the second direction ( Figure 1 and Figure 3 In the x direction shown in the figure, the third clamping member 21 and the fourth clamping member 22 are respectively located on both sides of the workpiece 3 to be measured, and the distance between the fourth clamping member 22 and the first clamping member 11 is fixed, so that when the fourth clamping member 22 is in contact with the end of the length of the workpiece 3 to be measured, the two ends of the length of the workpiece 3 to be measured extend out of the first clamping member 11 and the two ends of the second clamping member 12 at the same distance, so as to achieve the effect of the length direction ( Figure 1 and Figure 3 The third clamping member 21 is provided for the purpose of abutting against the workpiece 3 to be measured, so that the end of the workpiece 3 to be measured fits with the fourth clamping member 22, and at the same time, the distance between the fourth clamping member 22 and the first clamping member 11 or the second clamping member 12 is fixed. The two ends of the workpiece 3 to be measured fit with the third clamping member 21 and the fourth clamping member 22 respectively, and the third clamping member 21 and the fourth clamping member 22 can also be used to limit the workpiece 3 to be measured, and when the fastener 13 is used to connect the first clamping member 11 and the second clamping member 12, it is used to fix the workpiece 3 to be measured to avoid unnecessary displacement, thereby improving the convenience and accuracy of installation.

[0051] like Figure 3 and Figure 4 As shown, the auxiliary device 2 further includes a positioning member 23, which is disposed between the first clamping member 11 and the second clamping member 12, with a first side facing the workpiece 3 to be measured and a first side facing the third direction ( Figure 1and Figure 3 ) is perpendicular to the y direction shown in Figure 1 and Figure 3 The z direction shown in ), the second direction ( Figure 1 and Figure 3 ) and the third direction are perpendicular to each other. In some embodiments, the first direction is the direction of the thickness of the workpiece 3 to be measured, the second direction is the direction of the length of the workpiece 3 to be measured, and the third direction is the direction of the width of the workpiece 3 to be measured. When the first side of the positioning member 23 faces the workpiece 3 to be measured and fits with the side wall surface of the workpiece 3 to be measured, the workpiece 3 to be measured is centered on the fixture body 1 along the third direction. A slot 231 is provided on the side of the first side close to the workpiece 3 to be measured, and the extending direction of the slot 231 is away from the workpiece 3 to be measured, and at least part of the fastener 13 is provided in the slot 231. In some embodiments, the number of the slots 231 is two, and the depths of the two slots 231 are the same. The two fasteners 13 close to the first side are located in the slots 231 in a one-to-one correspondence. In some other embodiments, the slot 231 may not be provided on the first side, wherein the length of the first side is less than the length of the two connecting ears 112 on the same side of the first clamping member 11, that is, the fastener 13 is located between the two connecting ears 112 on the same side and fits with the workpiece 3 to be measured.

[0052] In some embodiments, the fastener 13 is a bolt, which passes through the first clamping member 11 and the second clamping member 12 and connects the first clamping member 11 , the workpiece 3 to be measured, and the second clamping member 12 .

[0053] In this embodiment, in the compression performance test fixture of the present application, the fixture body 1 is used to clamp the workpiece to be tested. The auxiliary device 2 is used to center the workpiece to be tested 3 in the fixture body 1 along the second direction and the third direction. The third clamping member 21 and the fourth clamping member 22 are fitted with the workpiece to be tested 3, which not only makes the workpiece to be tested 3 centered along the second direction, that is, the length direction of the workpiece to be tested 3, but also the third clamping member 21 and the fourth clamping member 22 are also used to limit and fix the workpiece to be tested, so as to facilitate the installation of the fastener 13 of the fixture body 1. The setting of the positioning member 23 facilitates the centering of the workpiece to be tested 3 along the third direction, that is, the width direction of the workpiece to be tested 3, wherein the card slot 231 of the positioning member 23 facilitates the accommodation of the fastener 13.

[0054] In an exemplary embodiment, Figure 1 and Figure 2 As shown, this embodiment provides a compression performance test fixture, including a fixture body 1 and an auxiliary device 2. The fixture body 1 includes a first clamping member 11, a second clamping member 12, and a fastener 13 for connecting the first clamping member 11 and the second clamping member 12. The first clamping member 11 and the second clamping member 12 are connected along a first direction ( Figure 1 and Figure 2The workpiece 3 to be measured is placed between the first clamping member 11 and the second clamping member 12. The workpiece 3 to be measured is arranged along the second direction ( Figure 1 and Figure 3 The auxiliary device 2 is used to assist in positioning the clamping posture of the workpiece 3 to be measured, and the auxiliary device 2 includes: a third clamp 21 and a fourth clamp 22, the third clamp 21 and the fourth clamp 22 are arranged along the second direction, in the second direction, the first clamp 11 and the second clamp 12 are arranged between the third clamp 21 and the fourth clamp 22, and one end of the workpiece 3 to be measured is in contact with the third clamp 21 or the fourth clamp 22. The auxiliary device 2 also includes a positioning member 23, the positioning member 23 is arranged between the first clamp 11 and the second clamp 12, the first side of the positioning member 23 faces the workpiece 3 to be measured, and the first side of the positioning member 23 is perpendicular to the third direction. The first direction, the second direction and the third direction ( Figure 1 and Figure 3 The first side of the positioning member 23 is in contact with the side wall of the workpiece 3 to be measured, and a portion of the first side extends in a direction away from the workpiece 3 to be measured to form a slot 231, and at least a portion of the fastener 13 is disposed in the slot 231.

[0055] In some embodiments, Figure 3-4 As shown, along the first direction, that is, along the direction of the thickness of the workpiece 3 to be measured ( Figure 3 The thickness of the positioning member 23 is smaller than the distance between the first clamping member 11 and the second clamping member 12. After completing the precise centering operation of the workpiece 3 to be measured, the fixture body and the auxiliary device can be easily separated, which ensures the smoothness and continuity of the assembly process and effectively improves the production efficiency.

[0056] In some embodiments, Figure 3 and Figure 4 As shown, the auxiliary device 2 further includes a positioning bracket 24, the positioning bracket 24 is in the shape of a plate, and a first slide groove 241 is provided on one side of the positioning bracket 24 facing the fixture body 1, and the first slide groove 241 is arranged along the second direction ( Figure 3 and Figure 4 The first slide groove 241 is provided in the same direction as the length of the workpiece 3 to be measured, and the positioning member 23 is slidably arranged in the first slide groove 241. In one example, the cross section of the first slide groove 241 is T-shaped, and a first T-shaped slider is arranged on the side of the positioning member 23 close to the positioning bracket 24. The first slider is correspondingly arranged in the first slide groove 241, driving the positioning member 23 to slide along the length direction of the workpiece 3 to be measured. The sliding arrangement of the positioning member 23 facilitates the adjustment of the position of the workpiece 3 to be measured in the second direction, so that the positioning member 23 can not only be adjusted in the third direction ( Figure 3 and Figure 4 The y direction shown in FIG. 2 can center the workpiece 3 to be measured without affecting the centering of the workpiece 3 to be measured in the second direction.

[0057] In some embodiments, Figure 3 and Figure 4 As shown, the auxiliary device 2 also includes a first base 25, along the first direction ( Figure 3 The surface of the first base 25 is provided with a second slide groove 251, and the second slide groove 251 is arranged along the second direction ( Figure 3 The length direction of the second slide slot 251 is also the same as the length direction of the workpiece 3 to be measured. In other embodiments, the first base 25 is connected to the positioning bracket 24, and the connection method can be welding, bolt connection, or integral molding.

[0058] In one embodiment, the cross section of the second slide groove 251 is T-shaped, a second T-shaped slider is provided on the side of the third clamping member 21 close to the first base 25, and a third T-shaped slider is provided on the side of the fourth clamping member 22 close to the first base 25. The second slider and the third slider are both slidably provided in the second slide groove 251, respectively driving the third clamping member 21 and the fourth clamping member 22 to slide. The third clamping member 21 and the fourth clamping member 22 are both slidably provided at both ends of the length of the workpiece 3 to be measured, and the workpiece 3 to be measured can be pressed against the two ends to be centered, and the centering process is convenient and quick.

[0059] In other embodiments, the cross section of the second slide groove 251 is T-shaped, and one of the third clamping member 21 or the fourth clamping member 22 is slidably disposed in the second slide groove 251. When the third clamping member 21 is slidably disposed on the first base 25, the fourth clamping member 22 is fixedly disposed on the first base 25, and a T-shaped second slider is disposed on the third clamping member 21. The second slider slides in the second slide groove 251, driving the third clamping member 21 to slide. The fourth clamping member 22 and the first base 25 can be connected by welding, bolt connection, or an integrally formed structure. Of course, as Figure 3As shown, the third clamping member 21 can be fixedly arranged on the first base 25, and the fourth clamping member 22 can be slidably arranged on the first base 25. The connection method between the third clamping member 21 and the first base 25 can be welding, screw connection, or an integrally formed structure. A T-shaped third slider is arranged on the fourth clamping member 22, and the third slider slides in the second slide groove 251, driving the fourth clamping member 22 to slide. In this embodiment, one of the third clamping member 21 and the fourth clamping member 22 is fixedly connected to the second base 14, and the other is slidably arranged along the second base 14. When the workpiece 3 to be measured is centered, it is only necessary to adjust the third clamping member 21 or the fourth clamping member 22 that is slidably arranged therein, which simplifies the operation process, does not require the simultaneous manipulation of two movable parts for complex synchronous adjustment, and only needs to focus on adjusting a single movable part, which greatly reduces the difficulty of operation. Moreover, since the linkage adjustment of the movable parts is reduced, it not only saves the operation time, but also makes the entire workpiece centering process faster and more efficient, but also reduces the mechanical wear of the device of the present application, and prolongs the service life of the device of the present application.

[0060] In some embodiments, Figure 1 and Figure 2 As shown, the clamp body 1 further includes a second base 14 disposed between the third clamping member 21 and the fourth clamping member 22, the second base 14 includes a support block 141 and a top block 142, the support block 141 and the top block 142 are disposed perpendicular to each other, wherein the support block 141 is disposed along the second direction ( Figure 1 and Figure 2 The length direction of the support block 141 is the same as the length direction of the workpiece 3 to be measured, and the top block 142 extends in the first direction ( Figure 1 and Figure 2 The length direction of the top block 142 is the thickness direction of the workpiece 3 to be measured, and the side of the top block 142 close to the workpiece 3 to be measured is in contact with the workpiece 3 to be measured. The connection between the support block 141 and the top block 142 can be welding, screw connection, or integral molding.

[0061] Among them Figure 1 and Figure 2 As shown, the second base 14 is L-shaped so as to cover the fixture body 1 in the space formed by the angle between the support block 141 and the top block 142. In the assembled state, along the second direction (that is, the length direction of the workpiece 3 to be measured, Figure 1 and Figure 2The workpiece 3 to be measured can protrude from the support block 141, so that the third clamping member 21 or the fourth clamping member 22 can fit and press against the workpiece 3 to clamp and position the workpiece 3 to be measured by the third clamping member 21 and the fourth clamping member 22, thereby avoiding angular deviation of the workpiece to be measured when the fastener is rotated to fasten the first clamping member and the second clamping member.

[0062] Through holes are provided on the first clamping member 11 and the second clamping member 12, and threaded holes are provided on the support block 141. The fastener 13 is a bolt, which passes through the through hole of the first clamping member 11 and the through hole of the second clamping member 12 in sequence and is screwed on the threaded hole of the support block 141, thereby connecting the first clamping member 11, the second clamping member 12 and the support block 141 together in sequence.

[0063] The fixture body 1 and the auxiliary device 2 are separate structures, so that the fixture body 1 and the auxiliary device 2 can be processed and assembled separately, thereby improving the manufacturing accuracy and quality stability of each.

[0064] According to an exemplary embodiment of the present application, this embodiment also provides a method for using a compression performance test fixture, as follows:

[0065] First, the fixture body 1 is used to pre-clamp the workpiece 3 to be measured, wherein the first clamping member 11 of the fixture body 1, the workpiece 3 to be measured and the second clamping member 12 of the fixture body 1 are stacked, and the fastener 13 of the fixture body 1 pre-clamps the first clamping member 11 and the second clamping member 12 to the workpiece 3 to be measured. The fixture body 1 pre-clamps the workpiece 3 to be measured only to limit the movement of the workpiece in the first direction, even if the workpiece 3 to be measured cannot move in the thickness direction, but can move in the second direction and the third direction to adjust the position, so as to facilitate the subsequent alignment of the workpiece 3 to be measured in the fixture body 1 along the second direction and the third direction.

[0066] Next, the fixture body 1 is placed between the third clamping member 21 and the fourth clamping member 22 of the auxiliary device 2, the fastener 13 is inserted into the slot 231 of the positioning member 23 of the auxiliary device 2, and one side of the workpiece 3 to be measured in the third direction is fitted with the positioning member 23. In this way, the workpiece 3 to be measured is centered in the third direction.

[0067] Then, the third clamping member 21 and / or the fourth clamping member 22 are adjusted, and one end of the workpiece 3 to be measured along the second direction is fitted with one of the third clamping member 21 and the fourth clamping member 22 .

[0068] Then, when the third clamping member 21 and the fourth clamping member 22 are both set to slide, one of the third clamping member 21 and the fourth clamping member 22 is recorded as a movable member, and the position of the movable member is adjusted so that the distance between the movable member and the fixture body 1 is a preset distance. When one end of the workpiece 3 to be measured is in contact with the movable member, the process of centering the workpiece 3 to be measured along the second direction is completed.

[0069] Finally, the third clamping member 21 and the fourth clamping member 22 clamp and limit the workpiece 3 to be tested from both ends, and at the same time, the fastener 13 is locked, and the fixture body 1 clamping the workpiece 3 to be tested is taken out. At this time, the workpiece 3 to be tested is centered in the second direction and the third direction of the fixture body 1, and the performance of the workpiece 3 to be tested clamped by the fixture body 1 can be tested.

[0070] During the positioning process, the side wall surface of the workpiece 3 to be measured can be fitted with the first side of the positioning member 23, so that the workpiece 3 to be measured has a precise fixed angle; and the fastener 13 used to fasten the first clamping member 11 and the second clamping member 12 is located in the slot 231 of the positioning member 23, and the slot 231 limits the relative placement angle of the first clamping member 11 and the second clamping member 12 through the fastener 13, so that the extension direction of the first clamping member 11, the second clamping member 12 and the workpiece 3 to be measured are parallel, which is conducive to detection accuracy and high assembly efficiency. The auxiliary device 2 is used to make the workpiece 3 to be measured centered in the fixture body 1 along the second direction and the third direction. Among them, the third clamping member 21 and the fourth clamping member 22 fit with the workpiece 3 to be measured, not only to make the workpiece 3 to be measured centered along the second direction, that is, the length direction of the workpiece 3 to be measured, but also the third clamping member 21 and the fourth clamping member 22 are set to limit and fix the workpiece 3 to be measured, so as to facilitate the installation of the fastener 13 of the fixture body 1. The arrangement of the positioning member 23 facilitates the centering of the workpiece 3 to be measured along the third direction, that is, the width direction of the workpiece 3 to be measured, wherein the slot of the positioning member 23 facilitates the accommodation of the fastener 13 .

[0071] In some embodiments, when tightening the fastener 13, a wrench with a tightening torque greater than or equal to 1 N·m is used to rotate the fastener 13. This helps to extend the service life of the clamp of the present application.

[0072] Those skilled in the art will readily appreciate other embodiments of the present application after considering the description and practicing the contents disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The description and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0073] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A compression performance test fixture, characterized in that: include: A fixture body, comprising a first clamping member and a second clamping member, and a fastener for connecting the first clamping member and the second clamping member, wherein the first clamping member and the second clamping member are arranged along a first direction, a workpiece to be measured is placed between the first clamping member and the second clamping member, and the workpiece to be measured extends along a second direction; An auxiliary device, used to assist in positioning the clamping posture of the workpiece to be measured, the auxiliary device comprising: A third clamping member and a fourth clamping member, wherein the third clamping member and the fourth clamping member are arranged along the second direction, and in the second direction, the first clamping member and the second clamping member are arranged between the third clamping member and the fourth clamping member, and one end of the workpiece to be measured is in contact with the third clamping member or the fourth clamping member; A positioning member is disposed between the first clamping member and the second clamping member, wherein a first side of the positioning member faces the workpiece to be measured, the first side is perpendicular to a third direction, and the first direction, the second direction and the third direction are perpendicular to each other; The first side is in contact with the side wall of the workpiece to be measured, and a part of the structure of the first side extends in a direction away from the workpiece to be measured to form a slot, and at least a part of the fastener is disposed in the slot.

2. A compression performance test fixture according to claim 1, characterized in that: Along the first direction, a thickness of the positioning member is smaller than a distance between the first clamping member and the second clamping member.

3. A compression performance test fixture according to claim 1, characterized in that: The auxiliary device further comprises a positioning bracket, a first slide groove is provided on a side of the positioning bracket facing the clamp body, and the first slide groove extends along the second direction; The positioning member is slidably disposed in the first sliding groove.

4. A compression performance test fixture according to claim 1, characterized in that: The auxiliary device further comprises a first base, a second slide groove is arranged on the surface of the first base along the first direction, and the second slide groove extends along the second direction; At least one of the third clamping member and the fourth clamping member is disposed in the second sliding groove.

5. A compression performance test fixture according to claim 1, characterized in that: The fixture body also includes a second base arranged between the third clamping member and the fourth clamping member, the second base includes a vertically arranged support block and a top block, the support block extends along the second direction, the top block extends along the first direction, one end of the top block is in contact with the workpiece to be measured, and one side of the support block is respectively in contact with the third clamping member or the fourth clamping member.

6. A compression performance test fixture according to claim 5, characterized in that: Along the second direction, the workpiece to be measured protrudes from the supporting block.

7. A compression performance test fixture according to claim 6, characterized in that: The fastener passes through the first clamping member, the second clamping member and the supporting block in sequence.

8. A compression performance test fixture according to claim 6, characterized in that: The clamp body and the auxiliary device are separate structures.

9. A method for using a compression performance test fixture, characterized in that: include: Using a fixture body to pre-clamp the workpiece to be measured; wherein a first clamping member of the fixture body, the workpiece to be measured and a second clamping member of the fixture body are stacked, and the first clamping member and the second clamping member are connected using a fastener of the fixture body to pre-clamp the workpiece to be measured; The fixture body is arranged between the third clamping member and the fourth clamping member of the auxiliary device, the fastening member is inserted into the clamping groove of the positioning member of the auxiliary device, and one side of the third direction of the workpiece to be measured is fitted with the positioning member; Adjust the third clamping member and / or the fourth clamping member so that one end of the workpiece to be measured along the second direction is in contact with one of the third clamping member and the fourth clamping member; Tighten the fastener and remove the fixture body that clamps the workpiece to be measured.

10. The method for using the compression performance testing fixture according to claim 9, characterized in that: The locking of the fastener comprises: The fastener is rotated using a wrench with a tightening torque greater than or equal to 1 N·m.

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