Section bar center bending test clamp

Abstract

The utility model discloses a section bar center bending test clamp, and relates to the technical field of section bar processing. The profile center bending test clamp comprises a workbench, a fixing assembly and a limiting assembly, a support is fixedly installed at the top of the workbench, the fixing assembly is arranged on the support and comprises a first spring, a U-shaped plate and pressing rollers, the first spring is fixedly installed at the top of the U-shaped plate, and the pressing rollers are rotationally installed on the inner walls of the front side and the rear side of the U-shaped plate. The limiting assembly is arranged on the workbench. Through cooperative use of a spring I, a U-shaped plate and a pressing roller, a sample can be ensured to keep a stable position and posture in the bending process by pressing and fixing a profile, test errors caused by movement or instability of the sample can be reduced, the accuracy and repeatability of test data are ensured, meanwhile, the test preparation process can be simplified, and the test efficiency is improved. The sample can be correctly loaded and can be kept stable in a test period.

Description

Technical Field

[0001] The utility model relates to the technical field of profile processing, and particularly relates to a fixture for a center bending test of profiles. Background Art

[0002] A fixture for a center bending test of profiles is a device used in material mechanics tests, mainly for testing and evaluating the performance of different materials under bending loads. This kind of fixture is usually designed to fix the sample and apply a bending force during the experiment to simulate the situations that may be encountered in actual use.

[0003] Through exploration and analysis, in actual use, the following disadvantages exist:

[0004] When some existing test fixtures are in use, usually clamping the two ends of the profile may introduce uneven stress distribution. At the same time, if the clamping of the two ends of the profile is unstable or uneven, it may cause the profile to shift or deform abnormally during the test, and this situation will affect the repeatability of the test and the authenticity of the results.

[0005] In summary, the present application now proposes a fixture for a center bending test of profiles to solve the above-mentioned problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a fixture for a center bending test of profiles, which can solve the problems that usually clamping the two ends of the profile may introduce uneven stress distribution, and at the same time, if the clamping of the two ends of the profile is unstable or uneven, it may cause the profile to shift or deform abnormally during the test, and this situation will affect the repeatability of the test and the authenticity of the results.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A fixture for a center bending test of profiles, comprising:

[0008] A workbench, on the top of which a bracket is fixedly installed;

[0009] A fixing component, which is arranged on the bracket. The fixing component includes a first spring, a U-shaped plate and a pressing roller. A first spring is fixedly installed on the top of the U-shaped plate, and pressing rollers are rotatably installed on the inner walls of the front and rear sides of the U-shaped plate;

[0010] A limiting component, which is arranged on the workbench. The limiting component includes a guide rod, a bidirectional threaded rod and a limiting plate. There are two groups of limiting plates arranged on the guide rod and the bidirectional threaded rod and are symmetrically distributed front and back. The bottom of the limiting plate is in contact with the top of the workbench.

[0011] Preferably, a hydraulic rod is fixedly installed on the top of the bracket, and the free end of the hydraulic rod passes through the bracket and is fixedly installed with a cross plate to drive the cross plate to move up and down.

[0012] Preferably, a stamping head is fixedly installed at the bottom of the cross plate.

[0013] Preferably, the other end of the first spring is fixedly installed with the bottom of the cross plate. By pressing the fixed profile, it can ensure that the sample maintains a stable position and posture during the bending process, reduce the test errors caused by sample movement or instability, ensure the accuracy and repeatability of the test data, simplify the test preparation process at the same time, ensure that the sample is correctly loaded and can remain stable during the test.

[0014] Preferably, a fixed plate is fixedly installed at the bottom of the workbench. The inner top of the fixed plate is fixedly installed with a second spring. The other end of the second spring is fixedly installed with a fixed block. A groove is opened at the top of the fixed block, and a pressure sensor is fixedly installed in the groove for real-time monitoring of the force change during the stamping process.

[0015] Preferably, the limiting component further includes a vertical plate. Four groups of vertical plates are fixedly installed on the top of the workbench and are distributed in a rectangular array. The adjacent side walls of two of the vertical plates are fixedly installed with guide rods, and the adjacent side walls of the other two vertical plates are rotatably installed with a bidirectional threaded rod. The limiting plate is slidably installed with the guide rod and is threadedly installed with the bidirectional threaded rod. It can reduce the test errors caused by profile movement or offset, and ensure that the punching force is evenly distributed on the entire profile at the same time, ensure that the profile remains centered and fixed during the test, guarantee the accuracy and repeatability of the test data, and protect the safety of operators and equipment.

[0016] Preferably, a displacement sensor is fixedly installed on the top of the cross plate for real-time monitoring of the displacement change during the stamping process.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] (1). For this profile center bending test fixture, through the combined use of the first spring, U-shaped plate and pressing roller, by pressing the fixed profile, it can ensure that the sample maintains a stable position and posture during the bending process, reduce the test errors caused by sample movement or instability, ensure the accuracy and repeatability of the test data, simplify the test preparation process at the same time, ensure that the sample is correctly loaded and can remain stable during the test.

[0019] (2). For this profile center bending test fixture, through the combined use of the vertical plate, guide rod, bidirectional threaded rod and limiting plate, it can reduce the test errors caused by profile movement or offset, and ensure that the punching force is evenly distributed on the entire profile at the same time, ensure that the profile remains centered and fixed during the test, guarantee the accuracy and repeatability of the test data, and protect the safety of operators and equipment. Description of the Drawings

[0020] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 is a perspective view of the present utility model;

[0022] Figure 2 is a perspective sectional view of the present utility model;

[0023] Figure 3 is a schematic structural view of the fixing component of the present utility model.

[0024] Reference numerals: 1, workbench; 2, bracket; 3, hydraulic rod; 4, cross plate; 5, stamping head; 6, first spring; 7, U-shaped plate; 8, pressing roller; 9, fixing plate; 10, second spring; 11, fixing block; 12, pressure sensor; 13, vertical plate; 14, guide rod; 15, bidirectional threaded rod; 16, limiting plate; 17, displacement sensor. Specific embodiments

[0025] In the description of the present utility model, it should be understood that the directional descriptions involved, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] Please refer to Figures 1-3 , the present utility model provides a technical solution: a fixture for a profile center bending test, including a workbench 1, a fixing component and a limiting component. A bracket 2 is fixedly installed on the top of the workbench 1. The fixing component is arranged on the bracket 2. The fixing component includes a first spring 6, a U-shaped plate 7 and a pressing roller 8. A first spring 6 is fixedly installed on the top of the U-shaped plate 7. Pressing rollers 8 are rotatably installed on the inner walls of the front and rear sides of the U-shaped plate 7. The limiting component is arranged on the workbench 1. The limiting component includes a guide rod 14, a bidirectional threaded rod 15 and a limiting plate 16. Two groups of limiting plates 16 are arranged on the guide rod 14 and the bidirectional threaded rod 15 and are symmetrically distributed front and back. The bottom of the limiting plate 16 is in contact with the top of the workbench 1.

[0027] Further, a hydraulic rod 3 is fixedly installed on the top of the bracket 2. The free end of the hydraulic rod 3 passes through the bracket 2 and is fixedly installed with a cross plate 4 to drive the cross plate 4 to move up and down. A stamping head 5 is fixedly installed on the bottom of the cross plate 4.

[0028] Furthermore, the other end of the first spring 6 is fixedly installed at the bottom of the cross plate 4. The pressing roller 8 first contacts the surface of the profile to press and fix the profile, and then continues to control the cross plate 4 to move downward, so that the U-shaped plate 7 compresses the first spring 6. At the same time, the stamping head 5 on the cross plate 4 stamps and bends the profile. The profile will drive the pressing roller 8 to move, so that the U-shaped plate 7 on the pressing roller 8 performs a contraction operation. During the bending process of the profile, the fixed block 11 will drive the second spring 10 to compress. By pressing and fixing the profile, it can ensure that the sample maintains a stable position and posture during the bending process, reduce the test errors caused by sample movement or instability, ensure the accuracy and repeatability of the test data, and at the same time simplify the test preparation process, ensure the correct loading of the sample and its stability during the test.

[0029] Furthermore, a fixed plate 9 is fixedly installed at the bottom of the workbench 1. The top inside the fixed plate 9 is fixedly installed with a second spring 10. The other end of the second spring 10 is fixedly installed with a fixed block 11. A groove is formed at the top of the fixed block 11, and a pressure sensor 12 is fixedly installed in the groove to monitor the force change during the stamping process in real time.

[0030] Most further, the limiting component further includes a vertical plate 13. Four groups of vertical plates 13 are fixedly installed on the top of the workbench 1 and are distributed in a rectangular array. The adjacent side walls of two of the vertical plates 13 are fixedly installed with guide rods 14, and the adjacent side walls of the other two vertical plates 13 are rotatably installed with a bidirectional threaded rod 15. The limiting plate 16 is slidably installed on the guide rod 14 and is threadedly installed on the bidirectional threaded rod 15. Rotating the bidirectional threaded rod 15 makes the bidirectional threaded rod 15 drive the two limiting plates 16 to move towards the profile, so that the limiting plates 16 clamp and limit the profile in the middle, which can reduce the test errors caused by profile movement or deviation. At the same time, it can ensure that the punching force is evenly distributed on the entire profile, ensure that the profile always remains centered and fixed during the test, guarantee the accuracy and repeatability of the test data, and protect the safety of operators and equipment.

[0031] Secondly, a displacement sensor 17 is fixedly installed on the top of the cross plate 4 to monitor the displacement change during the stamping process in real time.

[0032] Working principle: When in use, place the profile on the workbench 1, rotate the bidirectional threaded rod 15, so that the bidirectional threaded rod 15 drives two groups of limit plates 16 to move towards the profile, making the limit plates 16 center and clamp the profile for positioning. Then start the hydraulic rod 3, and push the cross plate 4 downward through the hydraulic rod 3, so that the pressing roller 8 first contacts the surface of the profile to press and fix the profile, and continue to control the cross plate 4 to move downward, so that the U-shaped plate 7 compresses the first spring 6. At the same time, the stamping head 5 on the cross plate 4 stamps and bends the profile. The profile will drive the pressing roller 8 to move, so that the U-shaped plate 7 on the pressing roller 8 performs a contraction operation. During the bending process of the profile, it will drive the fixed block 11 to compress the second spring 10, and the pressure sensor 12 on the fixed block 11 will record the bending pressure. At the same time, the displacement sensor 17 on the cross plate 4 records the bending displacement distance.

[0033] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various changes can be made without departing from the purpose of the present invention.

Claims

1. A fixture for the central bending test of profiles, characterized in that, Including: A workbench (1), on the top of which a bracket (2) is fixedly installed; A fixing component, which is arranged on the bracket (2), and the fixing component includes a first spring (6), a U-shaped plate (7) and a pressing roller (8). The first spring (6) is fixedly installed on the top of the U-shaped plate (7), and the pressing roller (8) is rotatably installed on the inner walls of the front and rear sides of the U-shaped plate (7); A limiting component, which is arranged on the workbench (1), and the limiting component includes a guide rod (14), a bidirectional threaded rod (15) and a limiting plate (16). There are two groups of limiting plates (16) arranged on the guide rod (14) and the bidirectional threaded rod (15) and are symmetrically distributed front and back. The bottom of the limiting plate (16) is in contact with the top of the workbench (1).

2. The profile center bending test fixture according to claim 1, characterized in that: A hydraulic rod (3) is fixedly installed on the top of the bracket (2), and the free end of the hydraulic rod (3) passes through the bracket (2) and is fixedly installed with a cross plate (4).

3. The profile center bending test fixture according to claim 2, wherein: A punching head (5) is fixedly installed on the bottom of the cross plate (4).

4. A profile center bending test fixture according to claim 3, characterized in that: The other end of the first spring (6) is fixedly installed with the bottom of the cross plate (4).

5. The profile center bending test fixture according to claim 4, characterized in that: A fixing plate (9) is fixedly installed on the bottom of the workbench (1), a second spring (10) is fixedly installed on the inner top of the fixing plate (9), the other end of the second spring (10) is fixedly installed with a fixing block (11), a groove is opened on the top of the fixing block (11), and a pressure sensor (12) is fixedly installed in the groove.

6. The profile center bending test fixture according to claim 5, characterized in that: The limiting component further includes a vertical plate (13). Four groups of vertical plates (13) are fixedly installed on the top of the workbench (1) and are distributed in a rectangular array. The adjacent side walls of two of the vertical plates (13) are fixedly installed with guide rods (14), and the adjacent side walls of the other two vertical plates (13) are rotatably installed with bidirectional threaded rods (15). The limiting plate (16) is slidably installed with the guide rod (14), and the limiting plate (16) is threadedly installed with the bidirectional threaded rod (15).

7. The profile center bending test fixture according to claim 6, characterized in that: A displacement sensor (17) is fixedly installed on the top of the cross plate (4).

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