Spline fixing device of cantilever beam impact testing machine

Abstract

The utility model relates to a spline fixing device of a cantilever beam impact testing machine, which belongs to the technical field of spline positioning and comprises a base, a fixed clamp for placing a spline is fixed on the base, and a movable clamp and an adjusting assembly for enabling the movable clamp to slide towards the fixed clamp are slidably mounted on the base. A vertically-arranged notch groove is formed in the side, close to the movable clamp, of the fixed clamp, the sample strip is vertically placed in the notch groove, a positioning assembly for adjusting the position height of the sample strip in the notch groove is installed in the fixed clamp, and the center point of the sample strip is located on the upper side of the notch groove. The side, away from the notch groove, of the sample strip abuts against the movable clamp. The device has the effects of ensuring that the pendulum bob can accurately knock the central point position of the spline and improving the test accuracy.

Description

Technical Field

[0001] This application relates to the technical field of spline positioning, and particularly to a spline fixing device for a cantilever beam impact testing machine. Background Art

[0002] A cantilever beam impact testing machine is a device for measuring the impact toughness of non-metallic materials. The cantilever beam impact testing machine is one of the most commonly used impact testing machines in the market, and through this device, tests can usually be carried out on required material products, etc.

[0003] Currently, for related impact testing machines, such as a Chinese patent with the authorization announcement number CN201378132Y, which discloses a pendulum impact testing machine composed of a frame, a pendulum, a jaw seat, and a pendulum suspension mechanism. The pendulum body is a fan-shaped structure, and a certain number and different-sized counterweight holes are provided thereon, which can realize simply supported beam impact and cantilever beam impact tests.

[0004] When a spline is undergoing an impact test, it needs to be positioned to ensure that the pendulum can strike at the center point position of the spline. In related technologies, there are large deviations when fixing the spline, which affects the accuracy of the final test. Summary of the Utility Model

[0005] In order to ensure that the pendulum can accurately strike at the center point position of the spline and improve the accuracy of the test, this application provides a spline fixing device for a cantilever beam impact testing machine.

[0006] The spline fixing device for a cantilever beam impact testing machine provided by this application adopts the following technical solutions:

[0007] A spline fixing device for a cantilever beam impact testing machine includes a base. A fixed fixture for placing a spline is fixed on the base. A movable fixture and an adjusting component for sliding the movable fixture in a direction close to the fixed fixture are also slidably installed on the base. A vertically arranged notch groove is opened on one side of the fixed fixture close to the movable fixture. The spline is vertically placed in the notch groove. A positioning component for adjusting the position height of the spline in the notch groove is installed in the fixed fixture. The center point of the spline is located above the notch groove, and one side of the spline away from the notch groove abuts against the movable fixture.

[0008] By adopting the above technical solutions, when it is necessary to test the spline, the spline is vertically placed into the notch groove, so that the center point of the spline is located above the notch groove, and the movable fixture is adjusted to slide in a direction close to the fixed fixture through the adjusting component, so that the fixed fixture and the movable fixture jointly clamp the spline, thereby realizing the stable installation of the spline and improving its fixing effect.

[0009] Optionally, the positioning component includes a stop block which is slidably installed in the notch groove. The spline is located above the stop block. The positioning component further includes a connecting piece fixedly connected to the stop block. One end of the connecting piece is fixed to the stop block, and a pointer is fixed to the other end. A scale parallel to the length direction of the notch groove is fixed on the fixed fixture, and the pointer is arranged opposite to the scale.

[0010] By adopting the above technical solution, by observing the scale indicated by the pointer, the position of the spline in the notch groove can be judged, and the depth of the spline inserted into the notch groove can be adjusted according to the length of the spline, so as to ensure that the center point position of the spline is located above the notch groove, which is convenient for performing an impact test on it.

[0011] Optionally, the positioning component further includes a lead screw rotatably installed on the fixed fixture. The lead screw is parallel to the length direction of the notch groove. A slider is threadedly connected to the lead screw. A sliding groove for the slider to slide is formed on the fixed fixture, and the slider is fixedly connected to the connecting piece.

[0012] By adopting the above technical solution, by rotating the lead screw, the slider slides along the length direction of the sliding groove, so as to change the position height of the stop block in the notch groove, thereby realizing the position adjustment of the spline placed in the notch groove and facilitating the adjustment of the spline position.

[0013] Optionally, the adjusting component includes a fixed block fixed on the base. The fixed block is provided with a threaded hole, and the axis of the threaded hole is parallel to the length direction of the base. A threaded rod is threadedly connected to the fixed block. The threaded rod penetrates through the threaded hole and abuts against the side of the movable fixture away from the fixed fixture.

[0014] By adopting the above technical solution, by rotating the threaded rod, the threaded rod abuts tightly against the movable fixture, causing the movable fixture to slide towards the fixed fixture and abut tightly against the spline, thereby realizing the fixation of the spline position.

[0015] Optionally, a handle for conveniently rotating the threaded rod is fixed to the end of the threaded rod away from the movable fixture, and the handle is located on the side of the fixed block away from the movable fixture.

[0016] By adopting the above technical solution, by rotating the handle, it is further convenient to rotate the threaded rod, and thus it is convenient for the movable fixture to clamp the spline.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] 1. When it is necessary to test the spline, place the spline vertically into the notch groove, make the center point of the spline located on the upper side of the notch groove, and adjust the moving fixture to slide towards the fixed fixture through the adjusting component, so that the fixed fixture and the moving fixture jointly clamp the spline, thereby realizing the stable installation of the spline and improving its fixing effect;

[0019] 2. By observing the scale indicated by the pointer, the position of the spline in the notch groove can be judged, and the depth of the spline inserted into the notch groove can be adjusted according to the length of the spline, so as to ensure that the center point position of the spline is located on the upper side of the notch groove, which is convenient for impact testing;

[0020] 3. By rotating the lead screw, the slider slides along the length direction of the chute, so as to realize the change of the position height of the stop block in the notch groove, thereby realizing the position adjustment of the spline placed in the notch groove and facilitating the adjustment of the spline position. Description of the Drawings

[0021] Figure 1 It is a structural schematic diagram of the fixed fixture, the moving fixture and the spline.

[0022] Figure 2 It is a structural schematic diagram of the fixed fixture and the positioning component.

[0023] Description of the reference numerals: 1, base; 11, limit groove; 2, fixed fixture; 21, notch groove; 22, chute; 3, moving fixture; 31, limit block; 4, adjusting component; 41, fixed block; 411, threaded hole; 412, threaded rod; 413, grip; 5, spline; 6, positioning component; 61, stop block; 62, lead screw; 621, knob; 63, slider; 64, connecting piece; 65, pointer; 66, scale. Specific Embodiments

[0024] The following is a further detailed description of the present application in conjunction with the attached Figure 1-2 This application embodiment discloses a spline fixing device for a cantilever beam impact testing machine.

[0025]

[0026]

[0026] Refer to Figure 1, A spline 5 fixing device for an Izod impact testing machine includes a horizontally arranged base 1. A fixed clamp 2 and a moving clamp 3 are installed on the base 1. The lower end of the fixed clamp 2 is fixed on the base 1, and the lower surface of the moving clamp 3 is slidably connected to the base 1. An adjusting component 4 is provided between the moving clamp 3 and the base 1. The adjusting component 4 adjusts the position of the moving clamp 3 on the base 1, enabling the moving clamp 3 to move in the length direction of the base 1. A notch groove 21 is formed on one side of the fixed clamp 2 close to the moving clamp 3. The notch groove 21 is located in the middle section of the fixed clamp 2 and is vertically opened along the height direction of the fixed clamp 2. A spline 5 is placed in the notch groove 21. After the spline 5 is inserted into the notch groove 21, moving the moving clamp 3 can press the spline 5 tightly. A positioning component 6 is also installed on the fixed clamp 2. The positioning component 6 adjusts the position height of the spline 5 in the notch groove 21, thereby meeting the positioning requirements for splines 5 of different lengths.

[0027] A limiting groove 11 is formed on the upper surface of the base 1. The length direction of the limiting groove 11 is parallel to the length direction of the base 1. A limiting block 31 is fixed on one side of the moving clamp 3 close to the limiting groove 11. The limiting block 31 is slidably installed in the limiting groove 11, enabling the moving clamp 3 to slide horizontally along the length direction of the base 1.

[0028] The adjusting component 4 includes a fixed block 41. The fixed block 41 is located on the side of the base 1 away from the fixed clamp 2. The fixed block 41 is horizontally provided with a threaded hole 411. The axis of the threaded hole 411 is parallel to the length direction of the base 1. A threaded rod 412 is threadedly connected in the threaded hole 411. The threaded rod 412 is horizontally arranged. One end of the threaded rod 412 abuts against the side of the moving clamp 3 away from the fixed clamp 2. The other end of the threaded rod 412 is fixed with a handle 413. By rotating the handle 413, the threaded rod 412 rotates, thereby pressing the moving clamp 3 tightly and making the moving clamp 3 press tightly against the fixed clamp 2.

[0029] Refer to Figure 2 , The positioning component 6 includes a stop block 61 slidably installed in the notch groove 21. When the spline 5 is placed in the notch groove 21, the spline 5 is located above the stop block 61. A sliding groove 22 is vertically formed on the fixed clamp 2. The sliding groove 22 is located on one side of the notch groove 21, and the length direction of the sliding groove 22 is parallel to the notch groove 21. The positioning component 6 includes a lead screw 62 vertically installed in the sliding groove 22. The lower end of the lead screw 62 is rotatably connected to the sliding groove 22. The upper end of the lead screw 62 is coaxially fixed with a knob 621, and the knob 621 is located outside the sliding groove 22.

[0030] A slider 63 is threadedly connected to the lead screw 62. The slider 63 is a square block. By rotating the lead screw 62, the slider 63 can slide up and down in the chute 22. A connecting piece 64 is fixed on the slider 63. The connecting piece 64 horizontally extends towards the direction close to the chute 22. The slider 63 is fixedly connected to the connecting piece 64. By adjusting the position of the slider 63 in the chute 22, the position of the stopper 61 can be adjusted, so that the spline 5 inserted into the notch groove 21 can be inserted more accurately, and it is ensured that the midpoint of the spline 5 is located outside the notch groove 21, which is convenient for conducting tests.

[0031] A pointer 65 is vertically fixed at one end of the connecting piece 64 away from the stopper 61. The pointer 65 horizontally extends towards the side close to the side wall of the fixed fixture 2. A scale 66 is also vertically fixed on the side wall of the fixed fixture 2. The pointer 65 and the scale 66 are arranged oppositely. By the position indicated by the pointer 65 on the scale 66, the position height of the stopper 61 can be adjusted more precisely, and thus it is convenient to position the splines 5 of different lengths.

[0032] The implementation principle of the spline 5 fixing device of the cantilever beam impact testing machine in the embodiment of the present application is as follows:

[0033] When an impact test needs to be performed on the spline 5, the spline 5 is vertically inserted into the notch groove 21. The position height of the stopper 61 is adjusted by the adjusting assembly 4, and by observing the scale indicated by the pointer 65, it is further convenient to accurately control the position of the spline 5 inserted into the notch groove 21, so that the midpoint position of the spline 5 is just located above the notch groove 21. The moving fixture 3 presses the spline 5 tightly in the notch groove 21, realizing the fixation of the position of the spline 5, which is convenient for subsequent impact tests to be able to strike the midpoint of the spline 5 and improve the accuracy of the test.

[0034] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A cantilever beam impact testing machine specimen (5) fixing device, comprising a base (1), characterized in that: A fixed fixture (2) for placing the spline (5) is fixed on the base (1), and a movable fixture (3) and an adjustment component (4) for making the movable fixture (3) slide in a direction close to the fixed fixture (2) are also slidably mounted on the base (1); a vertically arranged notch groove (21) is provided on a side of the fixed fixture (2) close to the movable fixture (3); the spline (5) is vertically placed in the notch groove (21); a positioning component (6) for adjusting the position height of the spline (5) in the notch groove (21) is installed in the fixed fixture (2); the center point of the spline (5) is located on the upper side of the notch groove (21), and the side of the spline (5) away from the notch groove (21) is tightly pressed against the movable fixture (3).

2. A cantilever beam impact testing machine specimen (5) fixing device according to claim 1, characterized in that: The positioning assembly (6) comprises a stopper (61), the stopper (61) being slidably mounted in the notch groove (21), the spline (5) being located on the upper side of the stopper (61), the positioning assembly (6) further comprising a connecting piece (64) fixedly connected to the stopper (61), one end of the connecting piece (64) being fixed to the stopper (61), and a pointer (65) being fixed to the other end, a scale (66) being fixed to the fixing fixture (2) and being parallel to the length direction of the notch groove (21), the pointer (65) being arranged opposite to the scale (66).

3. A cantilever beam impact testing machine specimen (5) fixing device according to claim 2, characterized in that: The positioning assembly (6) further comprises a lead screw (62) rotatably mounted on the fixed fixture (2), the lead screw (62) being parallel to the length direction of the notch groove (21), a slider (63) being threadedly connected to the lead screw (62), a slide groove (22) for the slider (63) to slide on being provided on the fixed fixture (2), and the slider (63) being fixedly connected to the connecting piece (64).

4. The cantilever beam impact testing machine specimen (5) fixing device according to claim 1, characterized in that: The adjustment assembly (4) comprises a fixed block (41) fixed on the base (1), the fixed block (41) being provided with a threaded hole (411), the axis of the threaded hole (411) being parallel to the length direction of the base (1), the fixed block (41) being threadedly connected with a threaded rod (412), the threaded rod (412) passing through the threaded hole (411) and abutting against a side of the movable clamp (3) away from the fixed clamp (2).

5. A cantilever beam impact testing machine specimen (5) fixing device according to claim 4, characterized in that: A handle (413) for facilitating rotation of the threaded rod (412) is fixed to one end of the threaded rod (412) away from the movable clamp (3), and the handle (413) is located on a side of the fixed block (41) away from the movable clamp (3).

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