Stainless steel sheet tensile sample centering device

Abstract

The utility model discloses a stainless steel sheet tensile sample centering device, and relates to the technical field of machining. The clamp comprises a clamp body and an adjusting screw rod, the clamp body is connected to a cross beam of a machining center through a connecting piece, a threaded hole is formed in an adjusting portion of the clamp body, the threaded end of the adjusting screw rod penetrates through the threaded hole and then is connected with a positioning block, the section of the positioning block is in an L shape, and the bottom face of the positioning block and a centering table face of the clamp body are arranged in a sliding mode. A T-shaped groove is formed in the inner side of the positioning block, a limiting block is installed at the threaded end of the adjusting screw rod, and the limiting block is rotationally installed in the T-shaped groove. Through the cooperation of the L-shaped positioning block and the centering table board, the right-angle side of the tensile sample can be tightly attached to the positioning block, so that the centering degree of the sample relative to the cross beam of the machining center is guaranteed, it is guaranteed that the centering degree of the parallel section of the machined tensile sample meets the dimensional tolerance requirement of the sample, and the machining precision of the tensile sample is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a centering device for a tensile test specimen of stainless steel sheet. Background Technology

[0002] In the processing of tensile test specimens for thin stainless steel sheets, the machining allowance on one side of the specimen is only 1 mm during machining. This places extremely high demands on the clamping and alignment of the specimen within the machining center. Existing specimen fixtures are insufficient to meet such high-precision positioning requirements. In actual processing, specimen positioning deviations are prone to occur, resulting in non-compliant dimensions of the parallel sections of the machined tensile specimen, which in turn affects the quality of the tensile specimen and subsequent test results. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a centering device for stainless steel sheet tensile specimens, which solves the problem of low positioning accuracy of stainless steel sheet tensile specimens during machining in machining centers in the prior art.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A centering device for tensile test specimens of stainless steel sheet includes a fixture body and an adjusting screw. The fixture body is connected to the crossbeam of a machining center via a connector. The adjusting part of the fixture body has a threaded hole. The threaded end of the adjusting screw passes through the threaded hole and is connected to a positioning block. The positioning block has an L-shaped cross-section. The bottom surface of the positioning block is slidably disposed with the centering platform of the fixture body. A T-shaped groove is provided on the inner side of the positioning block. A limit block is installed on the threaded end of the adjusting screw and is rotatably installed in the T-shaped groove.

[0006] It also includes a limiting pin. The adjusting bolt of the adjusting part has a first sliding hole on the upper and lower sides. The positioning block has a second sliding hole at the position corresponding to the first sliding hole. The limiting pin is movably installed in the first sliding hole and the second sliding hole. A limiting rod is installed on the end face of the positioning block. The limiting rod is inserted into the positioning block and its end abuts against the outer wall of the limiting pin.

[0007] A ruler is provided on the side of the center table.

[0008] A snap-fit ​​groove is provided on one side of the fixture body. The snap-fit ​​groove snaps onto the crossbeam of the machining center. A through fastening hole is provided on the side of the snap-fit ​​groove. The fastening bolt passes through the fastening hole and abuts against the crossbeam of the machining center.

[0009] Compared with existing technologies, the advantages of this invention are as follows: By cooperating with the L-shaped positioning block and the centering platform, the right-angled edge of the tensile specimen can be tightly attached to the positioning block, thereby ensuring the alignment of the specimen relative to the machining center beam. This ensures that the alignment of the parallel sections of the machined tensile specimen meets the dimensional tolerance requirements, effectively improving the machining accuracy of the tensile specimen. Specimen placement is quick and convenient; operators only need to align the right-angled edge of the specimen with the positioning block to complete the positioning, eliminating the need for complex adjustments and reducing the workload and difficulty for operators. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the main body of the clamp in this utility model;

[0012] Figure 3 This is a schematic diagram of the adjusting screw in this utility model;

[0013] Figure 4 This is a schematic diagram of the positioning block in this utility model.

[0014] In the picture:

[0015] 1. Fixture body; 2. Adjusting screw; 3. Adjustment part; 4. Threaded hole; 5. Positioning block; 6. Centering platform; 7. T-slot; 8. Limiting block; 9. Limiting pin; 10. First sliding hole; 11. Second sliding hole; 12. Limiting rod; 13. Scale; 14. Snap-fit ​​groove; 15. Fastening hole. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0017] A centering device for tensile test specimens of stainless steel sheet includes a fixture body 1 and an adjusting screw 2. The fixture body 1 is connected to the crossbeam of a machining center via a connector. The adjusting part 3 of the fixture body 1 has a threaded hole 4. The threaded end of the adjusting screw 2 passes through the threaded hole 4 and is connected to a positioning block 5. The positioning block 5 has an L-shaped cross section. The bottom surface of the positioning block 5 is slidably disposed with the centering platform 6 of the fixture body 1. A T-shaped groove 7 is provided on the inner side of the positioning block 5. A limit block 8 is installed on the threaded end of the adjusting screw 2 and is rotatably installed in the T-shaped groove 7.

[0018] It also includes a limiting pin 9. The adjusting bolt of the adjusting part 3 has a first sliding hole 10 on the upper and lower sides. The positioning block 5 has a second sliding hole 11 at the position corresponding to the first sliding hole 10. The limiting pin 9 is movably installed in the first sliding hole 10 and the second sliding hole 11. A limiting rod 12 is installed on the end face of the positioning block 5. The limiting rod 12 is inserted into the positioning block 5, and its end abuts against the outer wall of the limiting pin 9.

[0019] A scale 13 is provided on the side of the middle platform 6.

[0020] A snap-fit ​​groove 14 is provided on one side of the fixture body 1. The snap-fit ​​groove 14 snaps onto the crossbeam of the machining center. A through fastening hole 15 is provided on the side of the snap-fit ​​groove 14. The fastening bolt passes through the fastening hole 15 and abuts against the crossbeam of the machining center.

[0021] When using:

[0022] First, the fixture body 1 is snapped onto the crossbeam of the machining center through the snap-fit ​​groove 14. Then, the fastening bolts are passed through the fastening holes 15 and abutted against the crossbeam of the machining center to securely install the fixture body 1 on the machining center.

[0023] Then, according to the dimensions of the tensile specimen of the stainless steel sheet to be processed, rotate the adjusting screw 2. Since the threaded end of the adjusting screw 2 is connected to the positioning block 5, and the limiting block 8 rotates in the T-groove 7 of the positioning block 5, the rotation of the adjusting screw 2 can drive the positioning block 5 to move along the centering table 6. By observing the scale 13 on the side of the centering table 6, the positioning block 5 is adjusted to a suitable position.

[0024] Next, the cut stainless steel sheet tensile test specimen is placed on the centering table 6, ensuring that the right-angled edge of the specimen is in close contact with the positioning block 5. At this point, the centering of the specimen relative to the machining center beam is guaranteed. Then, the clamping cylinder on site is activated, moving it downwards to press against the top of the specimen, completing the clamping operation.

[0025] Finally, the machining center can process the sample according to the set program. During the processing, the limiting pin 9 and the limiting rod 12 cooperate with each other to ensure the stability of the positioning block 5, prevent its displacement, and ensure the accuracy and quality of the sample processing, thus realizing the precise positioning and efficient processing of the stainless steel sheet tensile sample.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A centering device for a tensile test specimen of stainless steel sheet, characterized in that: The fixture includes a main body (1) and an adjusting screw (2). The main body (1) is connected to the crossbeam of the machining center via a connector. The adjusting part (3) of the main body (1) has a threaded hole (4). The threaded end of the adjusting screw (2) passes through the threaded hole (4) and is connected to a positioning block (5). The positioning block (5) has an L-shaped cross section. The bottom surface of the positioning block (5) is slidably set with the centering table (6) of the main body (1). A T-shaped groove (7) is opened on the inner side of the positioning block (5). A limit block (8) is installed on the threaded end of the adjusting screw (2). The limit block (8) is rotatably installed in the T-shaped groove (7).

2. A stainless steel sheet tensile specimen centering device according to claim 1, characterized in that: It also includes a limiting pin (9), and the adjusting bolt of the adjusting part (3) has a first sliding hole (10) on the upper and lower sides. The positioning block (5) has a second sliding hole (11) at the position corresponding to the first sliding hole (10). The limiting pin (9) is movably installed in the first sliding hole (10) and the second sliding hole (11). A limiting rod (12) is installed on the end face of the positioning block (5). The limiting rod (12) is inserted into the positioning block (5), and its end abuts against the outer wall of the limiting pin (9).

3. A stainless steel sheet tensile specimen centering device according to claim 2, characterized in that: A ruler (13) is provided on the side of the middle table (6).

4. A stainless steel sheet tensile specimen centering device according to claim 3, characterized in that: A snap-fit ​​groove (14) is provided on one side of the fixture body (1). The snap-fit ​​groove (14) snaps onto the crossbeam of the machining center. A through fastening hole (15) is provided on the side of the snap-fit ​​groove (14). The fastening bolt passes through the fastening hole (15) and abuts against the crossbeam of the machining center.

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