A sample experimental tool for a matchable thread chuck

Abstract

The utility model relates to the technical field of inspection and detection, especially to a sample experimental tool capable of matching with thread chuck, including upper clamp subassembly and lower clamp subassembly, the upper clamp subassembly lower end is inserted with clamping structure and is connected, the clamping structure outer surface lower part is sleeved with no. The upper clamp subassembly lower end middle part is set with no. The lower clamp subassembly upper end middle part is set with no. The upper clamp subassembly includes no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no. The no

Description

Technical Field

[0001] This utility model relates to the field of inspection and testing technology, and in particular to a sample testing fixture that can be matched with a threaded clamp. Background Technology

[0002] In materials mechanics experiments, such as tensile, compression, and bending tests, precise clamping and positioning of specimens are required using experimental fixtures to ensure stable force and controllable displacement during the experiment, thereby obtaining accurate experimental data. Existing threaded chuck-based specimen testing fixtures have at least the following drawbacks: 1. For specimens with tensile strengths greater than 700 MPa or specially shaped samples, forcibly using existing fixtures can easily lead to the specimen detaching from the fixture before reaching the fracture point; forcibly increasing the clamping force can damage the fixture blocks (which are expensive); and the sample may also break near the transition arc. These situations can cause forced termination of the test, unstable data, and waste of test samples; 2. Existing fixtures also pose safety hazards to personnel due to detached specimens and loose clamps. Therefore, existing tensile testing equipment is unsuitable for mechanical property testing of high-strength materials and specially shaped samples. Therefore, we introduce a new specimen testing fixture compatible with threaded chucks. Utility Model Content

[0003] The main purpose of this invention is to provide a sample testing fixture that can be matched with a threaded chuck, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A sample testing fixture that can be matched with a threaded chuck includes an upper clamp assembly and a lower clamp assembly. The lower end of the upper clamp assembly is connected to a clamping structure, and a first connecting groove is sleeved on the lower part of the outer surface of the clamping structure. A first connecting groove is opened in the middle of the lower end of the upper clamp assembly, and a second connecting groove is opened in the middle of the upper end of the lower clamp assembly.

[0005] Preferably, the upper clamping assembly includes a clamping head, a clamping neck at the lower end of the clamping head, a clamping body at the lower end of the clamping neck, and a door-type locking structure inserted into the left side of the outer surface of the clamping neck. The clamping head is sleeved with the clamping structure.

[0006] Preferably, the lower clamp assembly includes a second clamp head, a second clamp neck is provided at the upper end of the second clamp head, a second clamp body is provided at the upper end of the second clamp neck, a second door-type locking structure is inserted and connected to the right side of the outer surface of the second clamp neck, and the second clamp neck is sleeved with the clamping structure.

[0007] By adopting the above technical solution, different threaded chucks are selected for samples of different specifications. During the test, there is no need to replace the entire clamp body, making the operation more labor-saving and convenient. When other sample specifications need to be tested or the threaded chuck is worn, it is only necessary to add or replace the threaded chuck of the corresponding size, which has a greater price advantage than replacing the entire clamp body. The two T-slots are closed at one end and open at the other end, which is conducive to the installation and positioning of the threaded chuck.

[0008] Preferably, the clamping structure includes a first clamping block, and two first clamping blocks are provided, with a T-shaped groove opened at one end of each of the two first clamping blocks facing each other.

[0009] By adopting the above technical solution, the T-shaped structure of the upper and lower clamping bodies is designed with an opening-type locking structure, which can prevent the threaded clamp from popping out and injuring people after the sample breaks, thus playing a safety protection role.

[0010] Preferably, the upper clamping block is inserted into the first connecting slot, and the lower clamping block is inserted into the second connecting slot.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a clamping structure, one end of the two T-slots on the clamping structure is closed and the other end is open, which is conducive to the installation and positioning of the threaded chuck; the clamping heads of the upper and lower clamps can be directly clamped as bar samples, making the clamping operation simple and safer; the door-type locking structure outside the T-structure provides double safety protection, and at the same time provides operability for mechanical property testing of samples with special shapes. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a sample testing fixture with a matching threaded chuck according to the present invention. Figure 2 This is a schematic diagram of the overall structure of the upper clamping assembly of a sample testing fixture that can be matched with a threaded chuck according to the present invention. Figure 3 This is a schematic diagram of the overall structure of the lower clamp assembly of a sample testing fixture that can be matched with a threaded chuck according to the present invention. Figure 4 This is a schematic diagram of the overall structure of the clamping structure of a sample testing fixture that can be matched with a threaded chuck according to the present invention.

[0013] In the diagram: 1. Upper clamp assembly; 2. Lower clamp assembly; 3. Clamping structure; 4. Connecting slot 1; 5. Connecting slot 2; 11. Clamp head 1; 12. Clamp neck 1; 13. Clamp body 1; 14. Opening locking structure 1; 21. Clamp head 2; 22. Clamp neck 2; 23. Clamp body 2; 24. Opening locking structure 2; 31. Clamping block 1; 32. T-slot. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Please see Figure 1-4 This utility model provides a technical solution: A sample testing fixture that can be matched with a threaded chuck includes an upper clamp assembly 1 and a lower clamp assembly 2. The lower end of the upper clamp assembly 1 is connected to a clamping structure 3. A first connecting groove 4 is sleeved on the lower part of the outer surface of the clamping structure 3. A first connecting groove 4 is opened in the middle of the lower end of the upper clamp assembly 1, and a second connecting groove 5 is opened in the middle of the upper end of the lower clamp assembly 2.

[0018] In this embodiment, the upper clamp assembly 1 includes a first clamp head 11, a first clamp neck 12 is provided at the lower end of the first clamp head 11, a first clamp body 13 is provided at the lower end of the first clamp neck 12, a first door-type locking structure 14 is inserted and connected to the left part of the outer surface of the first clamp neck 12, and the first clamp head 11 is sleeved with the clamping structure 3; the lower clamp assembly 2 includes a second clamp head 21, a second clamp neck 22 is provided at the upper end of the second clamp head 21, a second clamp body 23 is provided at the upper end of the second clamp neck 22, a second door-type locking structure 24 is inserted and connected to the right part of the outer surface of the second clamp neck 22, and the second clamp neck 22 is sleeved with the clamping structure 3.

[0019] The above scheme is as follows: the upper clamping assembly 1 and the lower clamping assembly 2 are arranged symmetrically at the center. The upper clamping assembly 1 and the lower clamping assembly 2 work together to clamp and fix the threaded chuck that needs to be tested, so as to facilitate subsequent testing. The clamping structure 3 is supported by the first connecting groove 4 on the upper clamping assembly 1 and the second connecting groove 5 on the lower clamping assembly 2.

[0020] In this embodiment, the clamping structure 3 includes a first clamping block 31. There are two first clamping blocks 31. Each of the two first clamping blocks 31 has a T-shaped groove 32 at one end opposite to the other. The upper first clamping block 31 is inserted into the first connecting groove 4, and the lower first clamping block 31 is inserted into the second connecting groove 5.

[0021] With the above solution, the T-slots on the two clamping blocks 31 are closed at one end and open at the other, which is conducive to the installation and positioning of the threaded chuck and facilitates the subsequent inspection and use of the threaded chuck.

[0022] It should be noted that this utility model is a test fixture for specimens with matching threaded clamps. During use, the test specimen for room temperature mechanical property testing is selected according to the test requirements (taking a 5mm diameter threaded specimen as an example; according to standard requirements, the clamp portions at both ends of the specimen are machined into M10 threads; for specimens with special shapes, a 1mm diameter PE wire is selected as an example). Two bolts matching the thread diameter and thread head size are found, and the test specimen is connected between the two bolts. The electronic universal testing machine is started, the equipment is preheated, the control computer is turned on, and the test software is accessed. Connect the first clamping head 11 on the upper clamping assembly 1 and the second clamping head 21 on the lower clamping assembly 2 to the upper and lower clamping parts of the electronic universal testing machine via direct clamping. During clamping, ensure that the centers of the clamped upper clamping assembly 1 and lower clamping assembly 2 are aligned. Adjust the upper and lower clamping parts to a suitable distance using the tensile testing machine. Tighten the upper and lower threaded portions of the sample to be tested onto the appropriate positions of the internal threads of the two threaded clamps, ensuring that the sample does not exceed the specified limits. The threaded chuck is placed into the two T-slots on the clamping structure 3, along with the assembled threaded chuck and the test sample. This ensures that the threaded chuck, the test sample, and the centers of the upper clamping assembly 1 and the lower clamping assembly 2 are aligned. The first and second door-type locking structures 14 and 24 on the upper clamping assembly 1 and the lower clamping assembly 2 are kept in a locked state. This completes the installation of the threaded head sample. After calibrating the testing machine, the room temperature tensile performance test of the threaded head sample can begin.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sample testing fixture compatible with threaded chucks, comprising an upper clamp assembly (1) and a lower clamp assembly (2), characterized in that: The upper clamping assembly (1) has a clamping structure (3) inserted at its lower end. The lower part of the outer surface of the clamping structure (3) is fitted with a first connecting groove (4). The upper clamping assembly (1) has a first connecting groove (4) in the middle of its lower end. The lower clamping assembly (2) has a second connecting groove (5) in the middle of its upper end.

2. The sample testing fixture with a matching threaded chuck according to claim 1, characterized in that: The upper clamp assembly (1) includes a clamp head (11), a clamp neck (12) is provided at the lower end of the clamp head (11), a clamp body (13) is provided at the lower end of the clamp neck (12), a door-type locking structure (14) is inserted and connected to the left side of the outer surface of the clamp neck (12), and the clamp head (11) is sleeved with the clamping structure (3).

3. The sample testing fixture with a matching threaded chuck according to claim 1, characterized in that: The lower clamp assembly (2) includes a second clamp head (21), a second clamp neck (22) is provided at the upper end of the second clamp head (21), a second clamp body (23) is provided at the upper end of the second clamp neck (22), a second door-type locking structure (24) is inserted and connected to the right side of the outer surface of the second clamp neck (22), and the second clamp neck (22) is sleeved with the clamping structure (3).

4. The sample testing fixture with a matching threaded chuck according to claim 1, characterized in that: The clamping structure (3) includes a first clamping block (31), and there are two first clamping blocks (31). Each of the two first clamping blocks (31) has a T-shaped groove (32) at one end opposite to the other.

5. The sample testing fixture with a matching threaded chuck according to claim 4, characterized in that: The upper clamping block (31) is inserted into the first connecting groove (4), and the lower clamping block (31) is inserted into the second connecting groove (5).

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