Sample preparation clamping device for special-shaped samples and small samples

Abstract

The utility model discloses a sample preparation clamping device for special-shaped samples and small samples, and belongs to the technical field of metallographic sample preparation. In order to solve the problem that an existing product is complex in structure, according to the technical scheme, the device comprises a cylinder, a bottom plate is arranged at the bottom of the cylinder, the bottom plate is used for sealing the lower end of the cylinder, and a clamping mechanism is arranged on the cylinder. By arranging the clamping mechanisms, a sample can be well clamped and fixed, grinding work is facilitated, meanwhile, different from a traditional clamping mode, the three clamping mechanisms are arranged, force in three different directions can be applied to the sample, the clamping stability is improved, and the grinding efficiency is improved. According to the sample grinding device, it can be guaranteed that a sample cannot deviate in the grinding process, the practicability of a product is improved, the fixing direction of the sample can be adjusted and fixed by arranging a rotating mechanism, a worker can grind different parts of the sample conveniently, the worker does not need to move, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallographic sample preparation, in particular to a sample clamping device for preparing special-shaped samples and small samples. Background Technique

[0002] The purpose of metallographic sample preparation is to show the true structure of the sample. The sample can be metal, ceramic, sintered carbide or other solid materials. The process includes sample cutting, sample embedding, sample grinding, sample polishing, and display of metallographic microstructure. When it is necessary to perform grinding and planing on the sample, the sample needs to be fixed in a suitable fixture with bolts and screws to prevent its position from shifting during the processing, facilitating the grinding and planing of the sample.

[0003] The existing sample fixture generally consists of two clamping plates and bolts for adjusting the distance between the clamping plates. This fixture adjusts the distance between the two clamping plates by rotating nuts to clamp the sample. However, for special-shaped samples and small samples, this fixture cannot meet the requirements, cannot clamp the sample well, the sample is easily knocked off during the sample preparation process, and it is not convenient to hold, indirectly reducing the processing efficiency.

[0004] Therefore, those skilled in the art have provided a sample clamping device for special-shaped samples and small samples to solve the problems raised in the above background technique. Content of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiment of the utility model provides a sample clamping device for special-shaped samples and small samples. By setting a clamping mechanism, a good clamping and fixing effect can be achieved on the sample, facilitating the grinding work. At the same time, different from the traditional clamping method, three groups of clamping mechanisms are provided, which can apply forces in three different directions to the sample, improving the clamping stability, ensuring that the sample will not shift during the grinding process. At the same time, through multi-directional clamping and fixing, the clamping mechanism can fix samples of different sizes and shapes, improving the practicability of the product. Secondly, by setting a rotating mechanism, the fixing direction of the sample can be adjusted and fixed, facilitating the staff to grind different parts of the sample without the need for the staff to move, saving time and effort, so as to solve the problems raised in the above background technique.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A sample clamping device for special-shaped samples and small samples includes a cylinder. A bottom plate is provided at the bottom of the cylinder, and the bottom plate is used to close the lower end of the cylinder. A clamping mechanism is provided on the cylinder. The clamping mechanism includes a threaded hole opened on the outer wall of the cylinder, and a fastening bolt is threadedly connected inside the threaded hole. One end of the fastening bolt located inside the cylinder is rotatably connected to a chuck.

[0008] As a further solution of the present utility model, the clamping mechanism further includes a positioning hole opened on the outer wall of the cylinder. The positioning hole is located below the threaded hole, and a positioning rod is embedded in the positioning hole. One end of the positioning rod located inside the cylinder is fixedly connected to the chuck.

[0009] As a further solution of the present utility model, a ball groove is opened at the center of the upper end of the bottom plate, and three groups of the clamping mechanisms are provided, which are evenly distributed at equal angles between two.

[0010] As a further solution of the present utility model, the surface of the chuck adjacent to the center of the cylinder is designed as an arc surface, which can increase the contact area with the specimen.

[0011] As a further solution of the present utility model, a fixed base is provided below the bottom plate. The bottom plate and the fixed base are connected by a rotating mechanism. The rotating mechanism includes a circular groove opened at the center of the upper end of the fixed base. The bottom surface of the circular groove is fixedly connected with a telescopic rod, and the telescopic rod is rotatably connected to the bottom plate.

[0012] As a further solution of the present utility model, the rotating mechanism further includes an embedding plate fixedly connected to the edge of the upper end of the fixed base. An embedding groove is opened at the edge of the lower end of the bottom plate, and the embedding plate is adapted to the embedding groove.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By setting the clamping mechanism, a good clamping and fixing effect can be achieved on the specimen, which is convenient for the grinding work. At the same time, different from the traditional clamping method, three groups of the clamping mechanisms are provided, which can apply three different-direction forces to the specimen, improve the clamping stability, ensure that the specimen will not shift during the grinding process, and at the same time, through the multi-directional clamping and fixing, the clamping mechanism can fix specimens of different sizes and shapes, improving the practicability of the product. Secondly, by setting the rotating mechanism, the fixing direction of the specimen can be adjusted and fixed, which is convenient for the staff to grind different parts of the specimen without the need for the staff to move, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a sample preparation clamping device for special-shaped specimens and small specimens;

[0016] Figure 2 For Figure 1 Partial exploded structural schematic diagram of

[0017] Figure 3 For Figure 1 Structural schematic diagram during separation of

[0018] Figure 4 For Figure 3 the enlarged structural schematic diagram of part A.

[0019] In the figure: 1, cylinder; 2, bottom plate; 3, ball groove; 4, threaded hole; 5, positioning hole; 6, fastening bolt; 7, positioning rod; 8, chuck; 9, fixed base; 10, circular groove; 11, telescopic rod; 12, embedding plate; 13, embedding groove. Specific embodiments

[0020] Please refer to Figures 1 to 4 , in the embodiment of the present utility model, a sample clamping device for special-shaped samples and small samples includes a cylinder 1. The center of the cylinder 1 is used to place the sample. A bottom plate 2 is provided at the bottom of the cylinder 1. The bottom plate 2 is used to support the sample. A ball groove 3 is opened at the center of the upper end of the bottom plate 2. The spherical design of the ball groove 3 can increase the contact area with the bottom of the sample and ensure its stability during processing.

[0021] Threaded holes 4 and positioning holes 5 are provided on the outer wall of the cylinder 1 in a vertical distribution. A fastening bolt 6 is screwed into the threaded hole 4, and a positioning rod 7 is embedded in the positioning hole 5. One end of the fastening bolt 6 located inside the cylinder 1 is rotatably connected to the chuck 8, and one end of the positioning rod 7 located inside the cylinder 1 is fixedly connected to the chuck 8. When the fastening bolt 6 is rotated along the threaded hole 4, the lateral movement of the chuck 8 can be realized. The positioning rod 7 plays a fixing role on the chuck 8, so that the chuck 8 will not rotate synchronously with the fastening bolt 6. Three chucks 8 are provided, and three different-direction forces will be applied to the sample during work, which can ensure that the sample will not shift during the grinding process.

[0022] One side of the chuck 8 close to the sample is designed as an arc surface, which can increase the contact surface with the sample to a certain extent, so that it can clamp the sample more firmly and ensure the stability during the grinding process.

[0023] A fixed base 9 is provided at the lower end of the bottom plate 2. The fixed base 9 can be directly fixed on the grinding station by screws. A circular groove 10 is opened at the center of the upper end of the fixed base 9. A telescopic rod 11 is fixedly connected inside the circular groove 10. The telescopic rod 11 is rotatably connected to the bottom plate 2, so that the bottom plate 2 and the cylinder 1 can rotate based on the fixed base 9, which is convenient for the staff to grind different parts of the sample.

[0024] A plurality of embedding plates 12 are provided at the upper end of the fixed base 9, and a plurality of embedding grooves 13 are opened at the lower end of the bottom plate 2. The embedding plates 12 can be inserted into the embedding grooves 13 to realize the fixation of the bottom plate 2 and the fixed base 9 at different angles, which is convenient for the grinding work.

[0025] The working principle of the present utility model is as follows: When it is necessary to grind a specimen, first place the specimen to be ground in the ball groove 3 of the bottom plate 2 and initially fix it by hand. Then rotate the fastening bolt 6. Under the limitation of the positioning rod 7, when the fastening bolt 6 rotates, it will push the chuck 8 towards the center of the cylinder 1. When the chuck 8 moves to contact the specimen, stop. Move the other two chucks 8 in the same way so that they also contact the specimen. In this way, the specimen can be clamped and fixed by the three chucks 8, facilitating the grinding work. When it is necessary to grind different parts of the specimen, at this time, the cylinder 1 can be lifted upward based on the fixed base 9, and the telescopic rod 11 moves, which will not affect the upward movement of the cylinder 1. Then rotate the cylinder 1 based on the telescopic rod 11 to adjust the angle of the specimen. After the adjustment is completed, put down the cylinder 1, and through the embedding plate 12 and the embedding groove 13, the fixed base 9 and the bottom plate 2 are fixed, facilitating the grinding of different direction parts of the specimen.

[0026] The above is only the preferred specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A sample preparation clamping device for special-shaped samples and small samples, comprising a cylinder (1), a bottom plate (2) being arranged at the bottom of the cylinder (1), the bottom plate (2) being used to seal the lower end of the cylinder (1), characterized in that: The cylinder (1) is provided with a clamping mechanism, which comprises a threaded hole (4) formed on the outer wall of the cylinder (1), the inner thread of the threaded hole (4) being connected to a fastening bolt (6), and one end of the fastening bolt (6) located inside the cylinder (1) being rotatably connected to a clamp (8).

2. The sample preparation clamping device for special-shaped samples and small samples according to claim 1 is characterized in that: The clamping mechanism also includes a positioning hole (5) formed on the outer wall of the cylinder (1), the positioning hole (5) being located below the threaded hole (4), a positioning rod (7) being embedded in the positioning hole (5), and one end of the positioning rod (7) being located inside the cylinder (1) and fixedly connected to the clamp (8).

3. The sample preparation clamping device for special-shaped samples and small samples according to claim 2 is characterized in that: A ball groove (3) is provided at the center of the upper end of the bottom plate (2), and three groups of clamping mechanisms are provided, with each group being distributed at equal angles.

4. The sample preparation clamping device for special-shaped samples and small samples according to claim 1 is characterized in that: The side of the chuck (8) adjacent to the center of the cylinder (1) is designed as a curved surface, which can increase the contact area with the sample.

5. The sample preparation clamping device for special-shaped samples and small samples according to claim 1 is characterized in that: A fixed base (9) is arranged below the base plate (2); the base plate (2) and the fixed base (9) are connected via a rotating mechanism; the rotating mechanism comprises a circular groove (10) provided at the center of the upper end of the fixed base (9); a telescopic rod (11) is fixedly connected to the bottom surface of the circular groove (10); and the telescopic rod (11) is rotatably connected to the base plate (2).

6. The sample preparation clamping device for special-shaped samples and small samples according to claim 5, characterized in that: The rotating mechanism further comprises an embedding plate (12) fixedly connected to the upper edge of the fixed base (9), an embedding groove (13) is provided at the lower edge of the base plate (2), and the embedding plate (12) is adapted to the embedding groove (13).

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