Test fixture and test device

Abstract

The utility model discloses a test fixture and a test device, the test fixture comprises a test piece and a fixed base, the test piece comprises a first positioning structure and a magnetic part made of a magnetic material; the fixed base comprises a fixed part, a second positioning structure and a magnetic part, the second positioning structure and the magnetic part are both arranged on the fixed part, the fixed part is provided with a first limiting surface, the test piece is attached to the first limiting surface, and the second positioning structure is used for being matched with the first positioning structure to limit movement of the test piece along the first limiting surface; and the magnetic piece is in adsorption connection with the magnetic adsorption part so as to adsorb the test piece on the first limiting surface. The test piece is more convenient to replace.

Description

Technical Field

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

[0002] When performing pull-out force tests on materials, the material needs to be attached to the test piece, and then a tensile force is applied to test the pull-out force between the material and the test piece. For each type of material, a test piece corresponding to that material needs to be used for the pull-out force test. In related technologies, threaded fasteners are used to fix the test piece to prevent it from moving during the test, thus affecting the accuracy of the test results. However, using threaded fasteners to fix the test piece makes the replacement process cumbersome, thereby reducing testing efficiency. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the first aspect of the present invention provides a test fixture that makes it easier to replace test pieces.

[0004] The second aspect of this utility model also provides a testing device.

[0005] A test fixture according to a first aspect of the present invention includes a test piece and a fixed base. The test piece includes a first positioning structure and a magnetic suction part made of magnetic material. The fixed base includes a fixing member, a second positioning structure and a magnetic member. The second positioning structure and the magnetic member are both disposed on the fixing member. The fixing member is provided with a first limiting surface. The test piece is attached to the first limiting surface. The second positioning structure is used to cooperate with the first positioning structure to limit the movement of the test piece along the first limiting surface. The magnetic member is adsorbed and connected to the magnetic suction part to adsorb the test piece onto the first limiting surface.

[0006] A test fixture according to a first aspect of the present invention has at least the following beneficial effects:

[0007] In the test fixture of this application, when the test piece needs to be replaced, the operator applies external force to the test piece on the fixed base to overcome the attraction force formed between the magnetic component and the magnetic suction part, thereby allowing the test piece to detach from the first limiting surface and the fixed base, thus achieving disassembly of the test piece. Then, the operator engages the first positioning structure of the replaced test piece with the second positioning structure of the fixed base to restrict the movement of the test piece along the first limiting surface and to make the test piece adhere to the first limiting surface. Because the magnetic component of the fixed base generates an attraction force on the magnetic suction part on the test piece, the test piece remains adhered to the first limiting surface. At this time, the test piece is less likely to shift during the test, thus achieving the installation of the test piece. From the above test piece replacement process, it can be seen that the test piece replacement in the test fixture of this application is relatively convenient, thereby reducing the operator's operation time and improving testing efficiency.

[0008] According to a test fixture of the first aspect of the present invention, a positioning groove is provided on the first limiting surface, and a magnetic component is accommodated in the positioning groove.

[0009] According to a test fixture of the first aspect of the present invention, a magnetic component is connected to the wall of a positioning groove by a threaded fastener.

[0010] According to a test fixture of the first aspect of the present invention, the test piece further includes a test part, a receiving hole is provided on the test part facing the positioning groove, a magnetic part is welded into the receiving hole, and a first positioning structure is provided on the test part.

[0011] According to a test fixture of the first aspect of the present invention, the first positioning structure is a positioning hole, and the second positioning structure is a positioning pin disposed on the first limiting surface, wherein the positioning pin is slidably disposed in the positioning hole.

[0012] According to a first aspect of the present invention, a test fixture is provided on the test piece with two positioning holes, and the fixed base includes two positioning pins. The two positioning pins are distributed on both sides of the magnetic component, and the two positioning pins are slidably inserted into the two positioning holes respectively.

[0013] According to a first aspect of the present invention, a test fixture further includes a mounting post, a fixing member having a mounting hole, the mounting post being rotatably passed through the mounting hole and used for connection with a test device.

[0014] According to a first aspect embodiment of the present invention, the test fixture further includes a locking screw, and the wall of the mounting hole is provided with a threaded hole. The locking screw passes through the threaded hole and is used to clamp the mounting column in conjunction with the wall of the mounting hole to prevent the fixing member from rotating relative to the mounting column.

[0015] According to a test fixture of the first aspect of the present invention, the fixing member further includes a fixing part and a mounting part connected to each other. A first limiting surface is formed on the fixing part, and a second limiting surface is formed on the mounting part. The first limiting surface and the second limiting surface together define a receiving area for receiving a test piece. The mounting hole is opened on the end face of the mounting part opposite to the second limiting surface.

[0016] A testing apparatus according to a second aspect of the present invention includes a testing fixture according to the first aspect of the present invention.

[0017] 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

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a three-dimensional structural diagram of a test fixture according to one embodiment of the present utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the test specimen;

[0021] Figure 3 for Figure 1 A three-dimensional structural diagram of the fixed base;

[0022] Figure 4 for Figure 1 A schematic diagram of the connection structure between the fixed base and the locking structure.

[0023] Figure label:

[0024] Test piece 100, first positioning structure 110, magnetic suction part 120, test part 130;

[0025] Fixed base 200, fixing part 210, first limiting surface 210a, positioning groove 210b, mounting hole 210c, threaded hole 210d, fixing part 211, mounting part 212, second limiting surface 212a, receiving area 213, second positioning structure 220, magnetic part 230, threaded fastener 240;

[0026] Mounting column 300;

[0027] Tighten screws 400. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of the 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.

[0029] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, left, right, front, and back, are based on the orientation 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.

[0030] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0031] 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.

[0032] The following is for reference. Figures 1 to 4 A test fixture according to the first aspect of this utility model will be described in detail.

[0033] refer to Figures 1 to 3 According to some embodiments of the present invention, a test fixture includes a test piece 100 and a fixed base 200, including a first positioning structure 110 and a magnetic suction part 120 made of magnetic material; the fixed base 200 includes a fixing member 210, a second positioning structure 220 and a magnetic member 230, the second positioning structure 220 and the magnetic member 230 are both disposed on the fixing member 210, the fixing member 210 is provided with a first limiting surface 210a, the test piece 100 is attached to the first limiting surface 210a, the second positioning structure 220 is used to cooperate with the first positioning structure 110 to restrict the movement of the test piece 100 along the first limiting surface 210a, and the magnetic member 230 is adsorbed and connected to the magnetic suction part 120 to adsorb the test piece 100 onto the first limiting surface 210a.

[0034] It should be noted that the first limiting surface 210a is a vertical plane. When the material is subjected to a pull-out force test, the material is attached to the test piece 100 on a plane parallel to the first limiting surface 210a, and then a vertically upward pulling force is applied to the material until the material and the test piece 100 move relative to each other. At this time, the magnitude of the pull-out force between the material and the test piece 100 is the same as the magnitude of the pulling force applied to the material.

[0035] In the test fixture of this application, when the test piece 100 needs to be replaced, the operator applies an external force to the test piece 100 on the fixed base 200 to make the test piece 100 overcome the attraction force formed between the magnetic component 230 and the magnetic suction part 120, so that the test piece 100 can be separated from the first limiting surface 210a and the fixed base 200, thereby realizing the disassembly of the test piece 100. Then, the operator engages the first positioning structure 110 of the replaced test piece 100 with the second positioning structure 220 of the fixed base 200 to restrict the movement of the test piece 100 along the first limiting surface 210a and make the test piece 100 adhere to the first limiting surface 210a. Since the magnetic component 230 of the fixed base 200 will generate an attraction force on the magnetic suction part 120 on the test piece 100, the test piece 100 will remain adhered to the first limiting surface 210a. At this time, the test piece 100 is not easy to shift during the test, thereby realizing the installation of the test piece 100. In the test fixture of this application, the operator can remove the test piece 100 from the fixed base 200 by overcoming the attraction force of the magnetic component 230 on the magnetic suction part 120. Correspondingly, after the operator attaches the test piece 100 to the first limiting surface 210a of the fixed base 200, the test piece 100 can remain attached to the first limiting surface 210a under the attraction of the magnetic component 230. The entire process of replacing the test piece 100 is more convenient and faster, thereby reducing the operator's operation time and improving the testing efficiency.

[0036] Specifically, test piece 100 is a test steel plate.

[0037] The test fixture of this application can be used to perform pull-out force testing on tape.

[0038] refer to Figure 3 In some embodiments of this utility model, a positioning groove 210b is provided on the first limiting surface 210a, and the magnetic component 230 is accommodated in the positioning groove 210b. It can be understood that since the test piece 100 is attached to the first limiting surface 210a, the magnetic component 230 is accommodated in the positioning groove 210b, and there is no structural barrier between the magnetic component 230 and the magnetic attraction part 120, thereby increasing the attraction force of the magnetic component 230 on the magnetic attraction part 120, so that the test piece 100 can be more stably adsorbed on the first limiting surface 210a.

[0039] like Figure 3 As shown, in one embodiment, the magnetic component 230 is connected to the groove wall of the positioning groove 210b via a threaded fastener 240. It is understood that connecting the magnetic component 230 to the fixing component 210 via the threaded fastener 240 makes the connection between the magnetic component 230 and the fixing component 210 more stable, preventing the magnetic component 230 from detaching from the fixing component 210 due to the attraction force of the magnetic attraction part 120.

[0040] like Figure 1 and Figure 3 As shown, in one embodiment, the test piece 100 further includes a test section 130. The test section 130 has a receiving hole facing the positioning groove 210b. A magnetic suction section 120 is welded into the receiving hole, and a first positioning structure 110 is disposed on the test section 130. It can be understood that by placing the magnetic suction section 120 within the receiving hole of the test section 130, the test piece 100 does not require additional structures to accommodate the magnetic suction section 120, further reducing the volume of the test piece 100. Furthermore, by welding the magnetic suction section 120 into the receiving hole, the connection between the magnetic suction section 120 and the test section 130 is strengthened, thereby enhancing the overall structural strength of the test piece 100.

[0041] In one embodiment of this utility model, the first positioning structure 110 is a positioning hole, and the second positioning structure 220 is a positioning pin disposed on the first limiting surface 210a, the positioning pin being slidably inserted into the positioning hole. For example, as... Figure 1 and Figure 2 As shown, the second positioning structure 220 is a positioning pin, and the positioning pin extends in the front-back direction.

[0042] Understandably, when replacing test piece 100, the worker applies external force to test piece 100 to overcome the attraction force of magnetic component 230. The worker continues to drive test piece 100 away from the first limiting surface 210a along the positioning pin until it is completely detached from the positioning pin, thereby disassembling test piece 100. The worker then inserts the positioning pin on the fixed base 200 into the positioning hole of the replaced test piece 100 and slides test piece 100 along the positioning pin until test piece 100 is in contact with the first limiting surface 210a. At this time, due to the attraction force of magnetic component 230 on magnetic suction part 120, test piece 100 can be stably attached to the first limiting surface 210a, thereby completing the installation of the replaced test piece 100.

[0043] In some other embodiments of this utility model, the first positioning structure 110 is a positioning pin, and the extension direction of the positioning pin is the front-to-back direction; the second positioning structure 220 is a positioning hole, and the positioning pin is slidably inserted into the positioning hole.

[0044] like Figures 1 to 3As shown, in a further embodiment of this utility model, the test piece 100 is provided with two positioning holes, and the fixed base 200 includes two positioning pins. The two positioning pins are distributed on both sides of the magnetic component 230, and the two positioning pins are slidably inserted into the two positioning holes. It can be understood that by fitting the test piece 100 onto the two positioning pins, the rotation of the test piece 100 along the first limiting surface 210a is restricted, so that the test piece 100 can more stably conform to the first limiting surface 210a.

[0045] In a specific embodiment of this utility model, the test piece 100 is provided with two positioning holes along the left-right direction, and the fixed base 200 includes two positioning pins. The two positioning pins are symmetrically distributed on the left and right sides of the magnetic component 230, and the two positioning pins are slidably inserted into the two positioning holes. It can be understood that during the test, a vertically upward pulling force is applied to the test piece 100. The positioning pins are distributed on the left and right sides of the magnetic component 230 so that the left and right parts of the test piece 100 can more evenly bear the reaction force from the positioning pins, thereby enabling the test piece 100 to more stably conform to the first limiting surface 210a.

[0046] In some embodiments of this utility model, the test fixture further includes a mounting post 300, and a mounting hole 210c is provided on the fixing member 210. The mounting post 300 rotatably passes through the mounting hole 210c and is used to connect with the test equipment. For example, as Figure 3 and Figure 4 As shown, the lower end face of the fixing member 210 is provided with a mounting hole 210c, which extends vertically. The upper end of the mounting post 300 is rotatably inserted into the mounting hole 210c, and the lower end of the mounting post 300 is used to connect with the testing equipment. It can be understood that by rotating the fixing member 210 relative to the mounting post 300, the test piece 100 is rotated around the vertical axis, thereby adjusting the angle of the test piece 100 so that the surface of the material is parallel to the surface of the test piece 100, thus reducing the probability of material distortion.

[0047] like Figure 3 and Figure 4As shown, in some embodiments, the test fixture also includes a locking screw 400, and the wall of the mounting hole 210c is provided with a threaded hole 210d. The locking screw 400 passes through the threaded hole 210d and is used to clamp the mounting post 300 with the wall of the mounting hole 210c to prevent the fixing member 210 from rotating relative to the mounting post 300. Understandably, by tightening the locking screw 400 to move the shank of the locking screw 400 away from the mounting post 300, the test piece 100 can be positioned at a preset angle by rotating the fixing member 210. At this point, the surface of the material is parallel to the surface of the test piece 100. Then, by tightening the locking screw 400, the shank of the locking screw 400 abuts against the mounting post 300, and the wall of the mounting hole 210c abuts against the mounting post 300. This generates sufficient friction between the locking screw 400, the wall of the mounting hole 210c, and the mounting post 300, thereby hindering the rotation of the fixing member 210 relative to the mounting post 300, thus achieving angle adjustment of the test piece 100.

[0048] In a further embodiment of this utility model, the test fixture also includes two locking screws 400, and two threaded holes 210d are provided circumferentially spaced on the wall of the mounting hole 210c, with the two locking screws 400 respectively passing through the two threaded holes 210d. It can be understood that by clamping the mounting post 300 with the two locking screws 400 in conjunction with the wall of the mounting hole 210c, friction is generated between the two locking screws 400 and the mounting post 300, further increasing the resistance to rotation of the fixing member 210 relative to the mounting post 300.

[0049] In some embodiments, the fastener 210 further includes a fastening portion 211 and a mounting portion 212 connected to each other. A first limiting surface 210a is formed on the fastening portion 211, and a second limiting surface 212a is formed on the mounting portion 212. The first limiting surface 210a and the second limiting surface 212a together define a receiving area 213 for receiving the test piece 100. A mounting hole 210c is formed on the end face of the mounting portion 212 opposite to the second limiting surface 212a. For example, as... Figure 3 and Figure 4 As shown, the fixing part 211 is connected to the rear upper end of the mounting part 212. The front end face of the fixing part 211 is formed with a first limiting surface 210a, the upper end face of the mounting part 212 is formed with a second limiting surface 212a, and the mounting hole 210c is opened on the lower end face of the mounting part 212. The cross-sectional dimension of the mounting part 212 in the horizontal direction is larger than the cross-sectional dimension of the fixing part 211 in the horizontal direction.

[0050] It is understandable that, since the cross-sectional dimension of the mounting part 212 in the horizontal direction is larger than the cross-sectional dimension of the fixing part 211 in the horizontal direction, the mounting post 300 is connected to the mounting part 212 and the test piece 100 is connected to the fixing part 211, so that the test piece 100 can be placed more stably on the fixing base 200.

[0051] The following describes a testing device according to a second aspect embodiment of the present invention. According to a testing device according to a second aspect embodiment of the present invention, a testing fixture as described in the first aspect embodiment is included. By using the testing fixture in the testing device, when the testing device needs to replace the test piece 100, the operator only needs to apply an attraction force from the magnetic component 230 to the magnetic suction part 120 to remove the test piece 100 along the positioning pin, and then reposition the test piece 100 along the positioning pin so that the test piece 100 and the first limiting surface 210a are kept in contact through the magnetic component 230, thus achieving the replacement of the test piece 100. The testing device of this application is more convenient for replacing the test piece 100.

[0052] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A test fixture, characterized in that, include: The test piece includes a first positioning structure and a magnetic suction part made of magnetic material; The fixed base includes a fixing component, a second positioning structure, and a magnetic component. The second positioning structure and the magnetic component are both disposed on the fixing component. The fixing component has a first limiting surface. The test piece is attached to the first limiting surface. The second positioning structure is used to cooperate with the first positioning structure to restrict the movement of the test piece along the first limiting surface. The magnetic component is adsorbed and connected to the magnetic attraction part to adsorb the test piece onto the first limiting surface.

2. The test fixture according to claim 1, characterized in that, A positioning groove is provided on the first limiting surface, and the magnetic component is accommodated in the positioning groove.

3. A test fixture according to claim 2, characterized in that, The magnetic component is connected to the wall of the positioning groove via a threaded fastener.

4. A test fixture according to claim 2, characterized in that, The test piece also includes a test section, on which a receiving hole is provided opposite to the positioning groove, the magnetic suction part is welded into the receiving hole, and the first positioning structure is disposed on the test section.

5. A test fixture according to claim 1, characterized in that, The first positioning structure is a positioning hole, and the second positioning structure is a positioning pin disposed on the first limiting surface, wherein the positioning pin is slidably disposed in the positioning hole.

6. A test fixture according to claim 5, characterized in that, The test piece is provided with two positioning holes, and the fixed base includes two positioning pins. The two positioning pins are distributed on both sides of the magnetic component, and the two positioning pins are slidably inserted into the two positioning holes respectively.

7. A test fixture according to claim 1, characterized in that, The test fixture also includes a mounting post, and the fixing member is provided with a mounting hole. The mounting post is rotatably passed through the mounting hole and is used to connect with the test equipment.

8. A test fixture according to claim 7, characterized in that, The test fixture also includes a locking screw. The wall of the mounting hole has a threaded hole. The locking screw passes through the threaded hole and is used to clamp the mounting post with the wall of the mounting hole to prevent the fixing member from rotating relative to the mounting post.

9. A test fixture according to claim 7, characterized in that, The fastener also includes a fixing part and a mounting part that are connected to each other. The fixing part has a first limiting surface, and the mounting part has a second limiting surface. The first limiting surface and the second limiting surface together define a receiving area, which is used to receive the test piece. The mounting hole is opened on the end face of the mounting part opposite to the second limiting surface.

10. A testing apparatus, characterized in that, It includes the test fixture as described in any one of claims 1 to 9.

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