A shear strength test fixture for arc-shaped workpieces

Abstract

The utility model discloses a kind of shearing strength test fixtures for arc-shaped workpiece, it is related to tooling jig technical field. Including base, two guide rods are fixed on base, the upper portion of base is provided with pressing block, sliding hole is opened in pressing block, sliding slot is opened in the front end of pressing block, installation cavity is opened in the rear end of pressing block, push block is slidably arranged in sliding slot, the front end of push block is provided with inclined extrusion surface, moving plate is arranged in installation cavity, two clamping blocks are fixed on moving plate, recess is opened in guide rod. The utility model is pushed by push block by pressure head descending extrusion, clamping block is inserted in the recess of guide rod, the position of pressing block is fixed, prevent pressing block from moving in testing process, manually fixed without operator, after testing is completed, pressure head is lifted, clamping block can be removed from recess, can be carried out blanking, up and down material process is more simple, convenient to operate, can effectively improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically to a shear strength testing fixture for arc-shaped workpieces. Background Technology

[0002] Tooling fixtures are indispensable process equipment in the manufacturing process. They are mainly used to fix, clamp or position workpieces to facilitate processing, assembly or inspection.

[0003] When performing shear strength testing on curved workpieces, a fixture is needed to fix the workpiece in place, and the pressure head of the testing equipment is used to perform the test. For example, a shear strength testing fixture for curved workpieces, as disclosed in patent publication number CN218524503U, includes a base and a pressure block floating on the base. A groove is provided at the boundary between the pressure block and the base, and the groove connects to the first side wall of the fixture. The groove includes a positioning groove on the base and a clearance groove on the pressure block. The positioning groove has two spaced-apart curved protrusions, and the clearance groove has a pressure platform corresponding to the gap between the two curved protrusions. This fixture has a simple structure, is easy to manufacture, and can accurately fix the position of the curved workpiece, ensuring that the curved workpiece will not shift or tilt during the shear strength test, effectively improving the accuracy of the shear strength test results.

[0004] When testing curved workpieces, it is often necessary to test multiple products. The above-mentioned device requires the bolts to be disassembled and reassembled during testing to achieve the effect of loading and unloading, which is cumbersome and has low work efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a shear strength testing fixture for arc-shaped workpieces to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A shear strength testing fixture for arc-shaped workpieces includes a base with two guide rods fixed on it. A pressure block is provided above the base, and clamping areas for holding the arc-shaped workpiece are provided at the bottom of the pressure block and the top of the base. A sliding hole is provided on the pressure block, and the pressure block is slidably mounted on the guide rods through the sliding hole. A sliding groove is provided at the front end of the pressure block, and an installation cavity is provided at the rear end of the pressure block. A push block is slidably mounted in the sliding groove. An inclined extrusion surface is provided at the front end of the push block. A movable plate is provided in the installation cavity and is fixedly connected to the push block. Two locking blocks are fixed on the movable plate, and grooves matching the locking blocks are provided on the guide rods. An clearance hole is provided on the pressure block and is aligned with the inclined extrusion surface.

[0008] Preferably, a fixing plate is fixed to the rear end of the pressure block, a support rod is fixed to the fixing plate, a return spring is sleeved on the support rod, and the two ends of the return spring abut against the moving plate and the fixing plate respectively.

[0009] Using the above structure, when the pressure head moves away from the clearance hole, the push block is no longer squeezed by the pressure head. At this time, the reset spring will push the moving plate forward, so that the locking block moves away from the groove. This eliminates the need for the operator to push it manually, further facilitating the operation.

[0010] Preferably, the pressure block has two symmetrically distributed connecting ears fixed on both sides, the base has two symmetrically distributed protrusions fixed on both sides, the upper surface of the protrusions is fixed with a vertical rod, the connecting ears are slidably connected to the vertical rod, a support spring is sleeved on the vertical rod, and the two ends of the support spring abut against the connecting ears and the protrusions respectively.

[0011] Using the above structure, when the test is completed, the pressure block can automatically rise upward under the action of the support spring, releasing the clamping of the arc-shaped workpiece. The operator does not need to lift the pressure block, further reducing the operation steps and alleviating the operator's workload.

[0012] Preferably, two symmetrically distributed bent rods are fixed on both sides of the pressure block, and a support plate is placed on the bent rod, with the support plate located directly below the clearance hole.

[0013] Using the above structure, when the pressure block is lifted upwards, the bent rod will simultaneously drive the pallet to move upwards, providing support for the unremoved arc-shaped workpiece, preventing the arc-shaped workpiece from falling and preventing injury to the operator, thus improving equipment safety.

[0014] Preferably, the bent rod is threaded with an adjusting screw, and the bottom of the adjusting screw is provided with a rotating handle. The upper end of the adjusting screw is provided with a tray, and the bottom of the tray has two symmetrically distributed matching grooves, with the tray located in the corresponding matching groove.

[0015] Using the above structure, the height of the pallet can be adjusted by turning the rotating handle to change the height of the adjusting screw, ensuring that the curved workpiece is just supported by the pallet before falling. Moreover, when the pallet is not needed, it can be removed more easily, making it more convenient to use.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The pressure head descends and presses the push block, which in turn moves the moving plate backward, inserting the clamping block into the groove of the guide rod. This fixes the position of the pressure block, preventing it from moving during the test and clamping the curved workpiece without requiring manual fixing by the operator. After the test is completed, the pressure head is raised, and the clamping block is removed from the groove, allowing for unloading. The unloading process is simpler, more convenient, and can effectively improve work efficiency.

[0018] At the same time, when the pressure head moves away from the clearance hole, the return spring will push the moving plate forward, causing the locking block to move out of the groove. This eliminates the need for manual pushing by the operator, further facilitating operation. In addition, the bending rod will simultaneously drive the support plate to move upward, providing support for any unremoved curved workpieces, preventing them from falling and injuring the operator, thus improving equipment safety. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the mounting cavity in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the tray in this utility model.

[0022] In the diagram: 1. Base; 2. Pressure block; 3. Guide rod; 4. Sliding hole; 5. Sliding groove; 6. Mounting cavity; 7. Moving plate; 8. Locking block; 9. Pushing block; 10. Inclined pressing surface; 11. Clearance hole; 12. Fixing plate; 13. Support rod; 14. Return spring; 15. Connecting ear; 16. Protrusion; 17. Vertical rod; 18. Support spring; 19. Bend rod; 20. Support plate; 21. Adjusting screw; 22. Tray; 23. Matching groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1-3As shown, this utility model provides a technical solution: a shear strength testing fixture for arc-shaped workpieces, including a base 1, two guide rods 3 fixed on the base 1, a pressure block 2 above the base 1, a clamping area for clamping the arc-shaped workpiece at the bottom of the pressure block 2 and the upper end of the base 1, a sliding hole 4 on the pressure block 2, and the pressure block 2 is slidably mounted on the guide rods 3 through the sliding hole 4, a sliding groove 5 at the front end of the pressure block 2, an installation cavity 6 at the rear end of the pressure block 2, a push block 9 slidably mounted in the sliding groove 5, an inclined extrusion surface 10 at the front end of the push block 9, a movable plate 7 in the installation cavity 6, and the movable plate 7 is fixedly connected to the push block 9, two locking blocks 8 are fixed on the movable plate 7, a groove matching the locking blocks 8 is provided on the guide rods 3, and an avoidance hole 11 is provided on the pressure block 2, and the avoidance hole 11 is aligned with the inclined extrusion surface 10.

[0025] It should be noted that during use, the pressure block 2 is moved upwards, and the arc-shaped workpiece is clamped in the clamping area between the pressure block 2 and the base 1. The pressure head of the testing equipment extends downwards from the clearance hole 11. While extending, it will press the push block 9 through the inclined pressing surface 10. The push block 9 drives the moving plate 7 to move backwards, inserting the clamping block 8 into the groove of the guide rod 3. At this time, the position of the pressure block 2 can be fixed to prevent the pressure block 2 from moving during the test, thus achieving clamping of the arc-shaped workpiece. After the test is completed, the pressure head is lifted, and the clamping block 8 can be removed from the groove, and the material can be unloaded. The unloading process is simpler and more convenient to operate, which can effectively improve work efficiency.

[0026] refer to Figure 2 The rear end of the pressure block 2 is fixed with a fixing plate 12, and a support rod 13 is fixed on the fixing plate 12. A return spring 14 is sleeved on the support rod 13, and the two ends of the return spring 14 abut against the moving plate 7 and the fixing plate 12 respectively.

[0027] It should be noted that when the pressure head is removed from the clearance hole 11, the push block 9 is no longer squeezed by the pressure head. At this time, the reset spring 14 will push the moving plate 7 forward, so that the locking block 8 is removed from the groove. This eliminates the need for manual pushing by the operator, further facilitating operation.

[0028] refer to Figure 1 Two symmetrically distributed connecting ears 15 are fixed on both sides of the pressure block 2, and two symmetrically distributed protrusions 16 are fixed on both sides of the base 1. A vertical rod 17 is fixed on the upper surface of the protrusion 16, and the connecting ears 15 are slidably connected to the vertical rod 17. A support spring 18 is sleeved on the vertical rod 17, and the two ends of the support spring 18 abut against the connecting ears 15 and the protrusions 16 respectively.

[0029] It should be noted that when the test is completed, the pressure block 2 can automatically rise upward under the action of the support spring 18, releasing the clamping of the arc-shaped workpiece. The operator does not need to lift the pressure block 2, further reducing the operation steps and reducing the workload of the operator.

[0030] refer to Figure 1 and Figure 3 Two symmetrically distributed bent rods 19 are fixed on both sides of the pressure block 2, and a support plate 20 is placed on the bent rod 19. The support plate 20 is located directly below the clearance hole 11.

[0031] It should be noted that when the pressure block 2 is lifted upward, the bent rod 19 will simultaneously drive the support plate 20 to move upward, providing support for the unremoved arc-shaped workpiece, preventing the arc-shaped workpiece from falling and preventing injury to the operator, thus improving equipment safety.

[0032] refer to Figure 3 The bent rod 19 is threaded with an adjusting screw 21, and the bottom of the adjusting screw 21 is provided with a rotating handle. The upper end of the adjusting screw 21 is provided with a tray 22. The bottom of the tray 20 has two symmetrically distributed matching grooves 23, and the tray 22 is located in the matching groove 23 at the corresponding position.

[0033] It should be noted that during use, the height of the support plate 20 can be adjusted by turning the rotating handle to change the height of the adjusting screw 21, ensuring that the curved workpiece is just supported by the support plate 20 before falling. Moreover, when the support plate 20 is not needed, it can be removed more easily, making it more convenient to use.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended embodiments and their equivalents.

Claims

1. A shear strength testing fixture for arc-shaped workpieces, comprising a base (1), characterized in that: Two guide rods (3) are fixed on the base (1). A pressure block (2) is provided above the base (1). The bottom of the pressure block (2) and the top of the base (1) are provided with clamping areas for clamping arc-shaped workpieces. A sliding hole (4) is provided on the pressure block (2), and the pressure block (2) is slidably mounted on the guide rod (3) through the sliding hole (4). A sliding groove (5) is provided at the front end of the pressure block (2), and an installation cavity (6) is provided at the rear end of the pressure block (2). A push block (9) is slidably provided, and an inclined extrusion surface (10) is provided at the front end of the push block (9). A movable plate (7) is provided in the mounting cavity (6), and the movable plate (7) is fixedly connected to the push block (9). Two locking blocks (8) are fixed on the movable plate (7), and a groove matching the locking block (8) is provided on the guide rod (3). An avoidance hole (11) is provided on the pressure block (2), and the avoidance hole (11) is aligned with the inclined extrusion surface (10).

2. The shear strength testing fixture for an arc-shaped workpiece according to claim 1, characterized in that: The rear end of the pressure block (2) is fixed with a fixing plate (12), and a support rod (13) is fixed on the fixing plate (12). A return spring (14) is sleeved on the support rod (13), and the two ends of the return spring (14) abut against the moving plate (7) and the fixing plate (12) respectively.

3. The shear strength testing fixture for an arc-shaped workpiece according to claim 1, characterized in that: The pressure block (2) has two symmetrically distributed connecting ears (15) fixed on both sides, and the base (1) has two symmetrically distributed protrusions (16) fixed on both sides. A vertical rod (17) is fixed on the upper surface of the protrusion (16), and the connecting ears (15) and the vertical rod (17) are slidably connected. A support spring (18) is sleeved on the vertical rod (17), and the two ends of the support spring (18) abut against the connecting ears (15) and the protrusions (16) respectively.

4. The shear strength testing fixture for an arc-shaped workpiece according to claim 1, characterized in that: The pressure block (2) has two symmetrically distributed bent rods (19) fixed on both sides, and a support plate (20) is placed on the bent rods (19). The support plate (20) is located directly below the clearance hole (11).

5. A shear strength testing fixture for an arc-shaped workpiece according to claim 4, characterized in that: The bent rod (19) is threaded with an adjusting screw (21), and the bottom of the adjusting screw (21) is provided with a rotating handle. The upper end of the adjusting screw (21) is provided with a tray (22). The bottom of the tray (20) has two symmetrically distributed matching grooves (23), and the tray (22) is located in the matching groove (23) at the corresponding position.

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