Metallographic specimen holder

Abstract

The utility model discloses a metallographic specimen holder which comprises a base, the outer surface of the base is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a threaded rod, the outer surface of the threaded rod is in threaded connection with a moving block, and the outer surface of the moving block is provided with a clamping mechanism. The clamping mechanism comprises a fixing block, a pull rod, a spring, a convex ring, a connecting plate, a rotating shaft, a first clamping frame, a connecting rod and a second clamping frame. When a sample needs to be clamped, the pull rod is pulled out of the fixing block, then the connecting plate is rotated to enable the rotating shaft to drive the first clamping frame to rotate, then the sample is attached to the second clamping frame, the first clamping frame is rotated to enable the first clamping frame and the second clamping frame to clamp the sample, meanwhile, the plug pin is inserted into the fixing block and penetrates through the first clamping frame, and then clamping of the sample is achieved.

Description

Technical Field

[0001] This utility model relates to the field of metallographic processing technology, and in particular to a metallographic sample holder. Background Technology

[0002] Metallographic examination is the process of examining the macroscopic and microscopic structure of metallic or non-metallic materials using metallographic methods. The main processes of metallographic examination include: sampling, mounting, grinding, polishing, and microstructure display. Polishing is used to remove minor scratches and surface defects introduced during the grinding process, so that the sample surface is smooth, without obvious grinding marks, and reflective.

[0003] Existing metal sample polishing machines typically place the sample directly on the polishing cloth of the polishing tool for polishing, and the polishing position needs to be constantly adjusted to prevent it from always being placed in one position on the polishing tool. This causes the polishing cloth to wear in the same spot, reducing the utilization rate of the polishing cloth. At the same time, the operator may cause uneven stress on the metallographic sample during polishing, which can lead to uneven wear and deformation. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a metallographic sample holder. Through the configuration of a first motor, a threaded rod, and a guide rod, the moving block can be controlled to move along the threaded rod, thereby moving the clamping mechanism and preventing it from always staying in one position, which would cause the polishing cloth to wear in the same spot and reduce its utilization rate. When it is necessary to clamp the sample, the pull rod is pulled out from the fixed block, and then the connecting plate is rotated to make the rotating shaft drive the first clamping frame to rotate. The sample is then placed against the second clamping frame, and the first clamping frame is rotated to clamp the sample tightly with the second clamping frame. At the same time, a pin is inserted into the fixed block and passes through the first clamping frame, thereby achieving the clamping of the sample. The operation is simple and can keep the sample stable, avoiding uneven force between the sample and the polishing cloth caused by shaking.

[0005] This utility model also provides a metallographic sample holder as described above, comprising: a base, a first motor fixedly connected to the outer surface of the base, a threaded rod fixedly connected to the output end of the first motor, a movable block threadedly connected to the outer surface of the threaded rod, a clamping mechanism provided on the outer surface of the movable block, the clamping mechanism including a fixed block, a pull rod, a spring, a convex ring, a connecting plate, a rotating shaft, a first clamping frame, a connecting rod, and a second clamping frame, the outer surface of the movable block being fixedly connected to the fixed block, the outer surface of the first clamping frame being fixedly connected to the rotating shaft, the outer surface of the rotating shaft being fixedly connected to the connecting plate, the outer surface of the pull rod being slidably connected to the connecting plate, the outer surface of the pull rod being fixedly connected to the convex ring, the outer surface of the convex ring being fixedly connected to the spring, the outer surface of the movable block being fixedly connected to the connecting rod, and the end of the connecting rod away from the movable block being fixedly connected to the second clamping frame; a polishing mechanism is provided inside the base.

[0006] According to the metallographic sample holder, the end of the pull rod near the fixing block can extend into the interior of the fixing block, and the end of the pull rod away from the fixing block is provided with a grip ball.

[0007] According to the metallographic sample holder, the outer surfaces of the first clamping frame and the second clamping frame are provided with elastic anti-slip pads.

[0008] According to the metallographic sample holder, there are two fixing blocks distributed on the left and right, and the outer surface of the right fixing block is provided with a pin, which passes through the fixing block and the first clamping frame.

[0009] According to the metallographic sample holder, a guide rod is fixedly connected to the inner side wall of the base, and the outer surface of the guide rod is slidably connected to the moving block.

[0010] According to the metallographic sample holder, the outer surface of the guide rod is provided with a limiting plate, and the number of limiting plates is two.

[0011] According to the metallographic sample holder, the polishing mechanism includes a second motor, a motor shaft, a first gear, a support shaft, a second gear, a rotating wheel, and a polishing cloth. The output end of the second motor is fixedly connected to the motor shaft. The outer surface of the motor shaft is fixedly connected to the first gear. The outer surface of the support shaft is rotatably connected to the base. The outer surface of the support shaft is fixedly connected to the second gear. The outer surface of the support shaft is fixedly connected to the rotating wheel. The outer surface of the rotating wheel is fixedly connected to the polishing cloth.

[0012] According to the metallographic sample holder, the second motor is electrically connected to an external power source, and the first gear and the second gear mesh with each other.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a schematic diagram of the overall structure of a metallographic sample holder according to the present invention;

[0016] Figure 2 This is a schematic diagram of the clamping mechanism of a metallographic sample holder according to the present invention;

[0017] Figure 3 This utility model relates to a metallographic sample holder. Figure 2 Enlarged view of a portion of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the internal structure of the base of a metallographic sample holder according to the present invention.

[0019] Legend:

[0020] 1. Base; 2. First motor; 3. Threaded rod; 4. Moving block; 5. Fixed block; 6. Pull rod; 7. Spring; 8. Convex ring; 9. Connecting plate; 10. Rotating shaft; 11. First clamping frame; 12. Connecting rod; 13. Elastic anti-slip pad; 14. Second clamping frame; 15. Pin; 16. Limiting plate; 17. Guide rod; 18. Second motor; 19. Motor shaft; 20. First gear; 21. Support shaft; 22. Second gear; 23. Rotating wheel; 24. Polishing cloth. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-4This utility model discloses a metallographic sample holder, comprising a base 1, a first motor 2 fixedly connected to the outer surface of the base 1, a threaded rod 3 fixedly connected to the output end of the first motor 2, a movable block 4 threadedly connected to the outer surface of the threaded rod 3, and a guide rod 17 fixedly connected to the inner side wall of the base 1. The outer surface of the guide rod 17 is slidably connected to the movable block 4. When the threaded rod 3 rotates under the action of the first motor 2, the movable block 4 moves along the guide rod 17 to adjust the position of the sample. Two limiting plates 16 are provided on the outer surface of the guide rod 17, and the distance between the two limiting plates 16 is equal to the distance the sample can move during polishing.

[0023] The outer surface of the movable block 4 is provided with a clamping mechanism, which includes a fixed block 5, a pull rod 6, a spring 7, a convex ring 8, a connecting plate 9, a rotating shaft 10, a first clamping frame 11, a connecting rod 12, and a second clamping frame 14. The outer surface of the movable block 4 is fixedly connected to the fixed block 5, the outer surface of the first clamping frame 11 is fixedly connected to the rotating shaft 10, the outer surface of the rotating shaft 10 is fixedly connected to the connecting plate 9, the outer surface of the pull rod 6 is slidably connected to the connecting plate 9, the outer surface of the pull rod 6 is fixedly connected to the convex ring 8, the outer surface of the convex ring 8 is fixedly connected to the spring 7, and the outer surface of the movable block 4 is fixedly connected to the connecting rod 12. The end of the connecting rod 12 away from the movable block 4 is connected to the second clamping frame 14. The clamping frame 14 is fixedly connected. The outer surfaces of the first clamping frame 11 and the second clamping frame 14 are provided with elastic anti-slip pads 13. There are two fixing blocks 5, which are distributed on the left and right. The outer surface of the right fixing block 5 is provided with a pin 15. The pin 15 passes through the fixing block 5 and the first clamping frame 11. When it is necessary to clamp the sample, the pull rod 6 is pulled out from the fixing block 5. Then the pull rod 6 is rotated to make the rotating shaft 10 drive the first clamping frame 11 to rotate. Then the sample is put into contact with the elastic anti-slip pad 13 of the second clamping frame 14. After that, the first clamping frame 11 is rotated to make the first clamping frame 11 and the second clamping frame 14 clamp the sample. Finally, the pin 15 is inserted into the fixing block 5 to achieve the clamping of the sample.

[0024] The base 1 is equipped with a polishing mechanism, which includes a second motor 18, a motor shaft 19, a first gear 20, a support shaft 21, a second gear 22, a rotating wheel 23, and a polishing cloth 24. The second motor 18 is electrically connected to an external power source. The output end of the second motor 18 is fixedly connected to the motor shaft 19. The outer surface of the motor shaft 19 is fixedly connected to the first gear 20. The outer surface of the support shaft 21 is rotatably connected to the base 1. The outer surface of the support shaft 21 is fixedly connected to the second gear 22. The first gear 20 and the second gear 22 mesh with each other. The outer surface of the support shaft 21 is fixedly connected to the rotating wheel 23. The outer surface of the rotating wheel 23 is fixedly connected to the polishing cloth 24. When the second motor 18 is started, the first gear 20 rotates. The second gear 22 drives the support shaft 21 to rotate, which in turn drives the rotating wheel 23 and the polishing cloth 24 to rotate, thus polishing the metallographic sample.

[0025] Working principle: When it is necessary to clamp and polish the metallographic sample, pull rod 6 is pulled out from the fixed block 5, and then the pull rod 6 is rotated to make the rotating shaft 10 drive the first clamping frame 11 to rotate. Then the sample is put into contact with the elastic anti-slip pad 13 of the second clamping frame 14. After that, the first clamping frame 11 is rotated to clamp the sample tightly with the second clamping frame 14. Finally, the pin 15 is inserted into the fixed block 5. At the same time, the pull rod 6 will be inserted into the fixed block 5 under the action of the spring 7 to avoid shaking and uneven force between the sample and the polishing cloth 24. Then the polishing mechanism is started to polish the sample with the polishing cloth 24. At the same time, the first motor 2 can drive the threaded rod 3 to rotate to adjust the position of the clamping mechanism to prevent the sample from always staying in one position and causing the polishing cloth 24 to wear in the same position, reducing the utilization rate of the polishing cloth 24.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A metallographic specimen holder, characterized by include: A base (1) is fixedly connected to a first motor (2) on its outer surface. A threaded rod (3) is fixedly connected to the output end of the first motor (2). A moving block (4) is threadedly connected to the outer surface of the threaded rod (3). A clamping mechanism is provided on the outer surface of the moving block (4). The clamping mechanism includes a fixed block (5), a pull rod (6), a spring (7), a convex ring (8), a connecting plate (9), a rotating shaft (10), a first clamping frame (11), a connecting rod (12), and a second clamping frame (14). The outer surface of the moving block (4) is fixedly connected to the fixed block (5). The outer surface of the first clamping frame (11) is fixedly connected to the rotating shaft (10), the outer surface of the rotating shaft (10) is fixedly connected to the connecting plate (9), the outer surface of the pull rod (6) is slidably connected to the connecting plate (9), the outer surface of the pull rod (6) is fixedly connected to the convex ring (8), the outer surface of the convex ring (8) is fixedly connected to the spring (7), the outer surface of the moving block (4) is fixedly connected to the connecting rod (12), and the end of the connecting rod (12) away from the moving block (4) is fixedly connected to the second clamping frame (14); a polishing mechanism is provided inside the base (1).

2. A metallographic specimen holder according to claim 1, characterized in that The end of the pull rod (6) near the fixed block (5) can extend into the interior of the fixed block (5), and the end of the pull rod (6) away from the fixed block (5) is provided with a ball grip.

3. A metallographic specimen holder according to claim 1, wherein The outer surfaces of the first clamping frame (11) and the second clamping frame (14) are provided with elastic anti-slip pads (13).

4. A metallographic specimen holder according to claim 1, wherein There are two fixing blocks (5) distributed on the left and right. The outer surface of the fixing block (5) on the right is provided with a pin (15), which passes through the fixing block (5) and the first clamping frame (11).

5. A metallographic specimen holder according to claim 1, wherein A guide rod (17) is fixedly connected to the inner side wall of the base (1), and the outer surface of the guide rod (17) is slidably connected to the moving block (4).

6. A metallographic specimen holder according to claim 5, wherein The outer surface of the guide rod (17) is provided with a limiting plate (16), and there are two limiting plates (16).

7. A metallographic specimen holder according to claim 1, wherein The polishing mechanism includes a second motor (18), a motor shaft (19), a first gear (20), a support shaft (21), a second gear (22), a rotating wheel (23), and a polishing cloth (24). The output end of the second motor (18) is fixedly connected to the motor shaft (19). The outer surface of the motor shaft (19) is fixedly connected to the first gear (20). The outer surface of the support shaft (21) is rotatably connected to the base (1). The outer surface of the support shaft (21) is fixedly connected to the second gear (22). The outer surface of the support shaft (21) is fixedly connected to the rotating wheel (23). The outer surface of the rotating wheel (23) is fixedly connected to the polishing cloth (24).

8. A metallographic specimen holder according to claim 7, wherein The second motor (18) is electrically connected to an external power source, and the first gear (20) and the second gear (22) mesh with each other.

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