CN206305938U - A kind of automatic grinding and polishing machine of metallographic specimen bed die grip device - Google Patents

Abstract

The utility model discloses a bottom mold fixture device for a metallographic sample automatic grinding and polishing machine, which comprises a bottom mold, a connection mechanism and a clamp mechanism, and the connection mechanisms all include bosses and positioning pins, and the bosses are stepped Cylindrical bosses, and the stepped cylindrical bosses include large cylindrical bosses and small cylindrical bosses, the bottom mold is a circular bottom mold, the bottom surface of the bottom mold is provided with a mounting groove, the The mounting groove is a stepped groove, the mounting groove includes a first groove and a second groove communicating with the first groove, the clamp mechanism includes a first adjustment block and a fixing piece, and the first adjustment block is A wedge-shaped block, and the width of the first adjusting block increases gradually from top to bottom. The utility model has the advantages of reasonable design, convenient operation and installation, strong adaptability and good positioning effect, can improve the grinding and polishing quality of metallographic samples, improve the accuracy of metallographic analysis, and has high precision and strong practicability.

Description

A metallographic sample automatic grinding and polishing machine with a bottom mold clamping device

technical field

The utility model belongs to the technical field of metallographic sample grinding and polishing processing, in particular to a bottom mold fixture device for a metallographic sample automatic grinding and polishing machine.

Background technique

Materials are the material basis of human production and life. The mechanical properties of metal materials are not only related to their chemical composition, but also closely related to their organizational structure. Therefore, it is necessary to conduct metallographic analysis to understand the relationship between various materials. However, before metallographic analysis , it is necessary to prepare metallographic samples for observation and inspection. The preparation of metallographic samples includes sampling, inlaying, grinding and polishing, so the quality of metallographic samples is ultimately determined by the polishing process. The polishing of metallographic samples is an important link in the process of metallographic sample preparation. The quality of polishing It directly affects the metallographic analysis. If it is seriously damaged, it will cause false organization of the metallographic sample, so that the detection will be inaccurate. At present, the main methods of polishing metallographic samples include mechanical polishing, electrolytic polishing, chemical polishing and composite polishing, among which mechanical polishing is a widely used polishing method to ensure high-quality metallographic samples and improve the quality of metallographic samples. Improve the preparation efficiency and quality, reduce the scrap rate of metallographic samples, thereby reducing costs, improving economic benefits, and obtaining high consistency of sample quality. However, the bottom mold fixture of the current metallographic sample automatic grinding and polishing machine cannot adapt to multiple metallographic samples to be processed, and there are some shortcomings:

First, the current indenter on the metallographic sample automatic grinding and polishing machine has four circular holes, which are not suitable for rectangular thin plate samples, 0.5T-CT samples, and nuclear power welded joint samples prepared in the laboratory at the safety end of the nuclear power primary circuit, etc. dimensional requirements, unable to achieve automatic grinding and polishing;

Second, the current automatic grinding and polishing machine for metallographic samples needs to manually operate the grinding and polishing of metallographic samples, which is easy to cause uneven force on the metallographic sample. After grinding and polishing, the processed surface of the metallographic sample cannot meet the precision requirements , the grinding and polishing effect is not good;

Third, when the speed of the grinding and polishing disc in the automatic metallographic sample grinding and polishing machine is too high, if the grinding and polishing is manually operated, not only the quality of grinding and polishing cannot be guaranteed, but also the metallographic sample may fly out and hurt people or damage the experimental equipment, etc. question;

Fourth, the pressure head on the metallographic sample automatic grinding and polishing machine directly presses on the upper surface of the metallographic sample, the metallographic sample is not uniformly stressed and the stress on the grinding and polishing disc is too large, which affects the speed of the grinding and polishing disc;

Fifth, after the pressure head on the metallographic sample automatic grinding and polishing machine is against the metallographic sample, the degree of freedom in the horizontal direction of the metallographic sample cannot be restricted, and the metallographic sample is easy to move with the rotation of the grinding and polishing disc, and grinding and polishing cannot be realized;

The current automatic grinding and polishing machine for metallographic samples is likely to cause poor surface quality after grinding and polishing of metallographic samples. The surface roughness requirements of the phase structure, and the metallographic analysis will cause inaccurate inspection and affect the metallographic analysis results. However, in the prior art, there is no suitable bottom mold fixture for the automatic grinding and polishing machine of metallographic samples. Therefore, there is a lack of a metallographic sample automatic grinding and polishing machine with a simple structure, reasonable design, and easy-to-operate bottom mold fixture device, which has strong adaptability and good positioning effect, can improve the grinding and polishing quality of metallographic samples, and improve the quality of metallographic samples. Metallographic analysis accuracy, high precision.

Utility model content

The technical problem to be solved by the utility model is to provide a metallographic sample automatic grinding and polishing machine with a bottom mold clamp device for the above-mentioned deficiencies in the prior art, which has a simple structure, a reasonable design, easy operation, low cost, and The utility model has the advantages of convenience, strong adaptability, and good positioning effect, can improve the grinding and polishing quality of metallographic samples, and improve the accuracy of metallographic analysis, has high precision, strong practicability, good use effect, and is convenient for popularization and use.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a metallographic sample automatic grinding and polishing machine with a bottom mold clamp device, which is characterized in that it includes a bottom mold, is installed on the bottom mold and is connected with the metallographic sample The connection mechanism for the indenter connection in the automatic grinding and polishing machine and the clamp mechanism arranged on the bottom surface of the bottom mold and used to install the metallographic sample, the connection mechanism and the bottom mold are detachably connected, and the number of the connection mechanisms is at least There are two, the structure and size of the two connecting mechanisms are the same, and each of the connecting mechanisms includes a boss that is arranged on the upper side of the bottom mold and cooperates with the mounting pressure head and is used to fix the boss and the bottom mold. The positioning pin, the boss is a stepped cylindrical boss, and the stepped cylindrical boss includes a large cylindrical boss and is installed under the large cylindrical boss and connected to the large cylindrical boss The platform is a small cylindrical boss integrally formed, and the centers of the two bosses and the center of the indenter are on the same straight line, the bottom mold is a circular bottom mold, and the bottom surface of the bottom mold is provided with a mounting Groove, the installation groove is a stepped groove, the installation groove includes a first groove and a second groove communicating with the first groove, the clamp mechanism is installed in the second groove and along the second groove The first adjustment block that moves up and down in the groove and the fixing piece that passes through the first adjustment block and the bottom mold, the first adjustment block is a wedge-shaped block, and the width of the first adjustment block gradually increases from top to bottom, A side of the first adjustment block close to a side wall of the installation groove is an inclined surface, and a side of the first adjustment block away from a side wall of the installation groove is a vertical surface.

The above-mentioned bottom mold fixture device for a metallographic sample automatic grinding and polishing machine is characterized in that: the fixing member is a screw, and one end of the screw extends from the upper side of the bottom mold to the bottom surface of the first adjustment block, and the The number of the screws is two, and the two screws are arranged along the length direction of the first adjustment block.

The above-mentioned bottom mold fixture device for a metallographic sample automatic grinding and polishing machine is characterized in that: a side wall of the installation groove close to the first adjustment block gradually slopes outward from top to bottom, and the installation groove The other side wall gradually inclines from top to bottom, and the distance between the two side walls of the installation groove gradually increases from top to bottom, and the angle between one side wall of the installation groove and the vertical direction The angle between the other side wall of the installation groove and the vertical direction is 2°-5°.

The above-mentioned bottom mold fixture device for a metallographic sample automatic grinding and polishing machine is characterized in that: the diameter of the large cylindrical boss is 1.5 mm to 2.0 mm larger than the diameter of the small cylindrical boss, and the The diameter of the small cylindrical boss is the same as the diameter of the circular hole on the pressure head.

The above-mentioned bottom mold clamping device for automatic grinding and polishing machine for metallographic samples is characterized in that: the positioning pin is a positioning pin with a threaded part, and the boss and the bottom mold are provided with holes for installing the positioning pin. Threaded hole.

The above-mentioned bottom mold clamping device for a metallographic sample automatic grinding and polishing machine is characterized in that: the clamping mechanism also includes a second adjustment block installed in the first groove, and the second adjustment block is a wedge-shaped block , and the width of the first adjustment block gradually decreases from top to bottom, the side of the second adjustment block close to the other side wall of the installation groove is a slope, and the side of the second adjustment block away from the other side wall of the installation groove for the vertical plane.

The above-mentioned bottom mold fixture device for automatic grinding and polishing machine for metallographic samples is characterized in that: the fixture mechanism also includes a second adjustment block installed in the first groove, and the second adjustment block is L-shaped An adjustment block, the L-shaped adjustment block includes a horizontal part and a vertical part integrally formed with the horizontal part and arranged vertically, and the width of the vertical part gradually decreases from top to bottom, and the vertical part is close to the installation groove The side of the other side wall of the vertical part is an inclined plane, and the side of the other side wall of the vertical part away from the installation groove is a vertical plane.

Compared with the prior art, the utility model has the following advantages:

1. The clamp mechanism and connection mechanism adopted are simple in structure, reasonable in design, low in input cost, convenient in processing, manufacturing and installation.

2. The connecting mechanism used includes bosses and positioning pins. By setting the bosses as stepped cylindrical bosses, the stepped cylindrical bosses include large cylindrical bosses and small cylindrical bosses, so that the pressing The head is clamped at the junction of the large cylindrical boss and the small cylindrical boss, so that the boss remains fixed in the axial direction, preventing the bottom mold from falling after the pressure head is lifted; and the boss and the bottom mold are fixed by positioning pins The connection can better ensure that the indenter and the center of the bottom mold coincide, and the concentrated load applied by the indenter can be changed into a uniform load applied to the metallographic sample, so that the metallographic sample is evenly stressed and the surface of the metallographic sample is guaranteed. Machining quality.

3. The fixture mechanism used includes the first adjustment block. By setting the first adjustment block, the metallographic sample is clamped between the first adjustment block and the installation groove, and the first adjustment block is driven from bottom to top by rotating the screw. Move, because the width of the first adjustment block gradually increases from top to bottom, with the upward movement of the first adjustment block, the metallographic sample is clamped, the metallographic sample is positioned, and the metallographic sample The throwing plate rotates but cannot move, which improves the precision of the metallographic sample processing surface, ensures the quality of grinding and polishing, and is easy to operate, low in cost and strong in adaptability.

4. The first adjustment block can be moved up and down with the rotation or reverse rotation of the screw, and adjusted to an appropriate height according to the width requirements of the metallographic sample, so that the clips suitable for various metallographic samples can be adjusted. installed, adaptable.

5. The number of the connecting mechanism is two, and the centers of the two bosses and the center of the indenter are located on the same straight line to ensure that the center of the indenter coincides with the center of the bottom mold and improve the alignment between the bottom mold and the indenter. Neutral, to avoid the eccentricity of the bottom mold when the indenter rotates, which will affect the grinding and polishing of metallographic samples.

6. The clamp mechanism used clamps the metallographic sample at the bottom of the bottom mold, and the metallographic sample is ground and polished during the rotation of the grinding and polishing disc, without the need for the operator to approach the metallographic sample automatic grinding and polishing machine, avoiding The metallographic sample flies out and hurts people or destroys the experimental equipment, which has high safety.

7. The connecting mechanism and the bottom mold are detachably connected, which is not only convenient for the machining and installation of the boss, but also can be disassembled according to the demand, which is convenient for storage.

8. The clamp mechanism adopted is easy to operate, convenient for metallographic sample installation and has good effect, can be conveniently used for the installation of metallographic sample, and can position the metallographic sample, has strong practicability and good use effect , which is convenient for promotion and use.

In summary, the utility model has simple structure, reasonable design, easy operation, low cost, convenient installation, strong adaptability, good positioning effect, can improve the grinding and polishing quality of metallographic samples, improve the accuracy and precision of metallographic analysis High, practical, good use effect, easy to popularize and use.

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the present utility model.

Fig. 2 is a structural schematic diagram of the indenter and the connection mechanism of the utility model.

Fig. 3 is a schematic structural view of Embodiment 2 of the present utility model.

Fig. 4 is a schematic structural view of Embodiment 3 of the present utility model.

Fig. 5 is a schematic structural diagram of the second adjustment block in Embodiment 3 of the present invention.

Explanation of reference signs:

1—indenter; 2—bottom mold; 3—metallographic sample;

4—installation groove; 4-1—the first groove; 4-2—the second groove;

5—locating pin; 6—screw; 7—the first adjustment block;

8—boss; 9—second adjustment block; 9-1—horizontal part;

9-2—vertical part; 10—round hole.

detailed description

Example 1

The utility model includes a bottom mold 2, a connection mechanism installed on the bottom mold 2 and connected with the indenter 1 of the metallographic sample automatic grinding and polishing machine, and a connecting mechanism arranged on the bottom surface of the bottom mold 2 and used for installing the metallographic sample 3 The clamp mechanism, the connection mechanism is detachably connected with the bottom mold 2, the number of the connection mechanism is at least two, the structure and size of the two connection mechanisms are the same, each of the connection mechanisms includes a set On the upper side of the bottom mold 2 and cooperate with the boss 8 of the mounting pressure head 1 and the positioning pin 5 for fixedly connecting the boss 8 with the bottom mold 2, the boss 8 is a stepped cylindrical boss, and the The stepped cylindrical boss includes a large cylindrical boss and a small cylindrical boss that is installed under the big cylindrical boss and integrally formed with the big cylindrical boss, and two of the bosses 8 The center is on the same straight line as the center of the indenter 1, the bottom mold 2 is a circular bottom mold, and the bottom surface of the bottom mold 2 is provided with an installation groove 4, and the installation groove 4 is a stepped groove, so The installation groove 4 includes a first groove 4-1 and a second groove 4-2 communicating with the first groove 4-1, and the clamp mechanism includes a groove installed in the second groove 4-2 and along the second groove The groove 4-2 moves up and down the first adjustment block 7 and the fixing piece that passes through the first adjustment block 7 and the bottom mold 2. The first adjustment block 7 is a wedge block, and the width of the first adjustment block 7 Increasing gradually from top to bottom, the side of the first adjustment block 7 close to a side wall of the installation groove 4 is a slope, and the side of the first adjustment block 7 away from a side wall of the installation groove 4 is a vertical surface.

In this embodiment, considering the processing technology, the bottom surface of the bottom mold 2 is chamfered on the edge of the bottom surface to reduce stress concentration, make it not sharp and increase its accessibility.

In this embodiment, the metallographic sample 3 is installed between the vertical surface of the first adjustment block 7 and the other side wall of the installation groove 4 .

In this embodiment, the metallographic sample 3 is a 0.5T-CT sample. During the actual installation process, the bottom of the clamped metallographic sample 3 is 3mm-3.6mm lower than the bottom of the bottom mold 2, which is convenient for grinding and polishing of the metallographic sample 3.

In this embodiment, the installation groove 4 includes a first groove 4-1 and a second groove 4-2 communicating with the first groove 4-1, and the first adjustment block 7 is installed in the second groove 4-2. 2 within. The setting of the first groove 4-1 is to facilitate the installation of the first adjustment block 7, on the one hand, it limits the maximum distance that the first adjustment block 7 can move up and down in the first groove 4-1, and on the other hand, it also limits The left and right movement of the first adjustment block 7. According to the width of the metallographic sample 3, the operator can install the metallographic sample 3 between the vertical surface of the first adjustment block 7 and the other side wall of the installation groove 4, thereby determining the installation of the metallographic sample 3. position, to realize the clamping of the metallographic sample 3, which can effectively prevent the metallographic sample 3 from moving with the rotation of the grinding and polishing disc, improve the precision of the metallographic sample processing surface, ensure the quality of grinding and polishing, and facilitate the grinding and polishing of the metallographic disc. Similar to sample 3 for convenient operation.

In actual use, according to the requirements of the metallographic sample 3, the depth of the first groove 4-1 can be adjusted, and the vertical movement range of the first adjustment block 1 can be adjusted, which is suitable for the clamping of various metallographic samples 3 and adapts to Strong.

In this embodiment, the centers of the two bosses 8 and the center of the indenter 1 are located on the same straight line to ensure that the centers of the indenter 1 and the bottom mold 2 are coincident, and to improve the centering of the bottom mold 2 and the indenter 1 To avoid the eccentricity of the bottom mold 2 when the indenter 1 rotates, which will affect the grinding and polishing of the metallographic sample 3.

In this embodiment, the fixing member is a screw 6, and one end of the screw 6 extends from the upper side of the bottom mold 2 to the bottom surface of the first adjustment block 7, and the number of the screws 6 is two, and the two The screws 6 are arranged along the length direction of the first adjustment block 7 .

In this embodiment, the purpose of setting the screw 6 is to facilitate the fixed connection between the first adjustment block 7 and the bottom mold 2, and to facilitate the first adjustment block 7 to move up and down with the rotation of the screw 6 or in the opposite direction; the first adjustment block 7 The width gradually increases from top to bottom. When the first adjustment block 7 moves from bottom to top, along with the upward movement of the first adjustment block 7, the vertical surface of the first adjustment block 7 squeezes the metallographic sample 3 to make the metallographic sample 3 The phase sample 3 is clamped between the vertical surface of the first adjustment block 7 and the other side wall of the installation groove 4 to realize the positioning of the metallographic sample 3, so that the metallographic sample 3 cannot move with the rotation of the grinding and polishing disc. The precision of the processed surface of the metallographic sample 3 is improved, the quality of grinding and polishing is guaranteed, the operation is convenient, the cost is low, and the adaptability is strong.

In this embodiment, one side wall of the installation groove 4 close to the first adjustment block 7 gradually slopes outward from top to bottom, and the other side wall of the installation groove 4 gradually slopes inward from top to bottom. And the distance between the two side walls of the installation groove 4 gradually increases from top to bottom, and the angle between one side wall of the installation groove 4 and the vertical direction is 9 ° ~ 12 °, the installation groove 4 The angle between the other side wall and the vertical direction is 2°～5°.

In this embodiment, the setting of the installation groove 4 is to cooperate with the installation of the first adjustment block 7 and the metallographic sample 3, and the friction coefficient between the first adjustment block 7 and a side wall of the installation groove 4 is increased by using the slope to ensure the first adjustment block 7 and the metallographic sample 3. The adjustment block 7 is kept relatively fixed with the installation groove 4, and the clamping effect is obvious.

In this embodiment, the diameter of the large cylindrical boss is 1.5 mm to 2.0 mm larger than the diameter of the small cylindrical boss, and the diameter of the small cylindrical boss is the same as the diameter of the round hole 10 on the indenter 1. same diameter.

In this embodiment, by setting the boss 8, it is to be installed in cooperation with the round hole 10 on the indenter 1, and the boss 8 is a stepped cylindrical boss, and the stepped cylindrical boss includes a large cylindrical boss. platform and a small cylindrical boss, so that the indenter 1 is clamped at the junction of the large cylindrical boss and the small cylindrical boss, so that the boss 8 remains fixed in the axial direction and prevents the indenter 1 from lifting. After lifting, the bottom mold 2 falls, and the boss 8 ensures that the central position of the indenter 1 coincides with the central position of the bottom mold 2, so that the concentrated load applied by the indenter 1 can be changed into a uniform load and applied to the metallographic sample 3, so that The metallographic sample 3 is evenly stressed to ensure the surface grinding quality of the metallographic sample.

In this embodiment, the positioning pin 5 is a positioning pin with a threaded part, and the boss 8 and the bottom mold 2 are provided with threaded holes for installing the positioning pin 5 .

In this embodiment, the setting of the positioning pin 5 is to detachably connect the boss 8 with the bottom mold 2, and the boss 8 can be fixedly connected with the bottom mold 2, which is convenient for the machining and installation of the boss 8, and can Boss 8 and bottom mold 2 are disassembled according to requirements, which is convenient for operation.

When the utility model is actually implemented, at first, the operator installs the first adjustment block 7 in the first groove 4-1 according to the width of the metallographic sample 3, and the slope of the first adjustment block 7 is aligned with the installation groove 4. The sides are in close contact, and the operator can install the metallographic sample 3 between the vertical surface of the first adjustment block 7 and the other side wall of the installation groove 4 according to the width of the metallographic sample 3; Rotate, the first adjustment block 7 moves from bottom to top with the rotation of the screw 6, because the width of the first adjustment block 7 gradually increases from top to bottom, along with the upward movement of the first adjustment block 7, the first adjustment block 7 The metallographic sample 3 is squeezed on the vertical surface of the metallographic sample 3, and the metallographic sample 3 is clamped between the vertical surface of the first adjustment block 7 and the other side wall of the installation groove 4, so that the two sides of the metallographic sample 3 The side surfaces are respectively in contact with the vertical surface of the first adjustment block 7 and the other side wall of the installation groove 4, and the bottom of the metallographic sample 3 is lower than the bottom of the bottom mold 2, so as to realize the positioning of the metallographic sample 3 and complete the metallographic sample 3. The same as the installation of the sample 3; then, the two bosses 8 are respectively set in the round hole 10 of the indenter 1 from top to bottom, and then the positioning pin 5 is passed through the boss 8 and the bottom mold 2 in sequence, so that the bosses The platform 8 is fixedly connected with the bottom mold 2, and the centers of the two bosses 8 and the center of the pressure head 1 are on the same straight line, and ensure that the center position of the pressure head 1 coincides with the center position of the bottom mold 7, so as to improve the relationship between the bottom mold 7 and the pressure head 1. The centering of the head 1 avoids the eccentric problem of the bottom mold 7 when the indenter 1 rotates, and changes the concentrated load applied by the indenter 1 into a uniform load applied to the metallographic sample 3, so that the metallographic sample 3 is stressed Uniformity ensures the surface grinding quality of metallographic sample 3. The fixture has a simple structure, reasonable design, easy operation, low cost, convenient installation, strong adaptability, and good positioning effect, which can improve the grinding and polishing quality of metallographic samples and improve Metallographic analysis accuracy, high precision, strong practicability, good use effect.

Example 2

In this embodiment, as shown in FIG. 3 , the difference from Embodiment 1 is that the clamp mechanism further includes a second adjustment block 9 installed in the first groove 4-1, and the second adjustment block 9 is Wedge-shaped block, and the width of the first adjustment block 7 gradually decreases from top to bottom, the side of the second adjustment block 9 close to the other side wall of the installation groove 4 is a slope, and the second adjustment block 9 is away from the installation groove 4 The side of the other side wall is a vertical plane.

In this embodiment, the metallographic sample 3 is installed between the vertical surface of the first adjustment block 7 and the vertical surface of the second adjustment block 9 .

In this embodiment, by setting the second adjustment block 9 and installing it in the second groove 4-2, the metallographic sample 3 is sandwiched between the vertical surface of the first adjustment block 7 and the vertical surface of the second adjustment block 9. Between the vertical surfaces, according to the width needs of the metallographic sample 3, adjust the width of the second adjustment block 9, so that the horizontal distance between the vertical surface of the first adjustment block 7 and the vertical surface of the second adjustment block 9 meets the requirements of the metallurgy. The width of the metallographic sample 3, the metallographic sample 3 is installed between the vertical surface of the first adjustment block 7 and the vertical surface of the second adjustment block 9, thereby determining the installation position of the metallographic sample 3, realizing the metallographic sample 3 Clamping of phase sample 3.

In this embodiment, the metallographic sample 3 is a nuclear power welded joint sample.

In the actual installation process, the bottom of the nuclear power welded joint sample is 1mm-2mm lower than the bottom of the bottom mold 2, which is convenient for grinding and polishing of the metallographic sample 3.

In this embodiment, the rest of the structure, connection relationship and working principle are the same as those in Embodiment 1.

When the utility model is implemented, the operator installs the second adjustment block 9 in the second groove 4-2 according to the width of the metallographic sample 3, and the slope of the second adjustment block 9 is aligned with the other side of the installation groove 4. In close contact, the distance between the vertical surface of the first adjustment block 7 and the vertical surface of the second adjustment block 9 meets the width of the metallographic sample 3, and the metallographic sample 3 can be installed on the vertical surface of the first adjustment block 7. surface and the vertical surface of the second adjustment block 9; then, the screw 6 is rotated to connect the two sides of the metallographic sample 3 with the vertical surface of the first adjustment block 7 and the vertical surface of the second adjustment block 9 respectively. The vertical surfaces are in close contact, so that the metallographic sample 3 is installed between the first adjustment block 7 and the second adjustment block 9, and the bottom of the metallographic sample 3 is lower than the bottom of the bottom mold 2, and the metallographic sample is completed. 3 installation.

Example 3

In this embodiment, as shown in Figure 4 and Figure 5, the difference from Embodiment 2 is that the clamp mechanism further includes a second adjustment block 9 installed in the first groove 4-1, and the second adjustment The block 9 is an L-shaped adjustment block, and the L-shaped adjustment block includes a horizontal part 9-1 and a vertical part 9-2 integrally formed with the horizontal part 9-1 and arranged vertically, and the vertical part 9- The width of 2 gradually decreases from top to bottom, the side of the vertical part 9-2 close to the other side wall of the installation groove 4 is a slope, and the side of the vertical part 9-2 away from the other side wall of the installation groove 4 is vertical plane.

In this embodiment, the metallographic sample 3 is a rectangular thin plate sample, and the thickness of the rectangular thin plate sample is only about 2 mm. Therefore, by setting the vertical part 9-2 of the second adjustment block 9 and the first adjustment The block 7 realizes the clamping of the rectangular thin plate sample, and the horizontal part 9-1 in the second adjustment block 9 is arranged between the rectangular thin plate sample and the first groove 4-1 for the clamping of the rectangular thin plate. The sample is padded to ensure that the bottom of the processed thin plate sample is lower than the bottom of the bottom mold 2 and can be ground and polished.

During the actual installation process, the bottom of the rectangular thin plate sample is 0.5 mm to 1 mm lower than the bottom of the bottom mold 2 , which is convenient for grinding and polishing of the metallographic sample 3 .

In this embodiment, the metallographic sample 3 is installed between the vertical surface of the first adjustment block 7 and the vertical surface of the second adjustment block 9 .

In this embodiment, the rest of the structure, connection relationship and working principle are the same as those in Embodiment 2.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (7)

1. a metallographic sample automatic grinding and polishing machine bottom mold clamp device, it is characterized in that: comprise bottom mold (2), be installed on the bottom mold (2) and press head with metallographic sample automatic grinding and polishing machine (1) the connection mechanism that connects and is arranged on described bottom mold (2) bottom surface and is used for installing the clamp mechanism of metallographic sample (3), and described connection mechanism and bottom mold (2) are detachably connected, and described The number of connecting mechanisms is at least two, and the structure and size of the two connecting mechanisms are the same, and each of the connecting mechanisms includes a boss arranged on the upper side of the bottom mold (2) and matched with the installation pressure head (1) (8) and a positioning pin (5) for fixedly connecting the boss (8) with the bottom mold (2), the boss (8) is a stepped cylindrical boss, and the stepped cylindrical boss The platform includes a large cylindrical boss and a small cylindrical boss installed under the large cylindrical boss and integrally formed with the big cylindrical boss, and the centers of the two bosses (8) are aligned with the The center of the indenter (1) is located on the same straight line, the bottom mold (2) is a circular bottom mold, and the bottom surface of the bottom mold (2) is provided with a mounting groove (4), and the mounting groove (4) It is a stepped groove, the installation groove (4) includes a first groove (4-1) and a second groove (4-2) communicating with the first groove (4-1), and the clamp mechanism It includes a first adjustment block (7) installed in the second groove (4-2) and moving up and down along the second groove (4-2), and a first adjustment block (7) and a bottom mold (2 ), the first adjustment block (7) is a wedge-shaped block, and the width of the first adjustment block (7) gradually increases from top to bottom, and the first adjustment block (7) is close to the installation groove ( 4) The side of one side wall is an inclined plane, and the side of one side wall of the first adjustment block (7) away from the installation groove (4) is a vertical plane. 2. according to a kind of metallographic sample automatic grinding and polishing machine bottom mold clamping device according to claim 1, it is characterized in that: described fixture is screw (6), and one end of described screw (6) is from bottom mold (2) The upper side extends to the bottom surface of the first adjustment block (7), and the number of the screws (6) is two, and the two screws (6) are arranged along the length direction of the first adjustment block (7). layout. 3. The bottom mold fixture device for a metallographic sample automatic grinding and polishing machine according to claim 1 or 2, characterized in that: the installation groove (4) is close to a side wall of the first adjustment block (7) Gradually incline outward from top to bottom, the other side wall of the installation groove (4) gradually inclines from top to bottom, and the distance between the two side walls of the installation groove (4) is from top to bottom gradually increases, and the angle between one side wall of the installation groove (4) and the vertical direction is 9°～12°, and the angle between the other side wall of the installation groove (4) and the vertical direction It is 2°～5°. 4. according to claim 1 or 2 described a kind of metallographic sample automatic grinding and polishing machine bottom mold clamping device, it is characterized in that: the diameter of described large cylindrical boss is smaller than the diameter of described small cylindrical boss 1.5mm-2.0mm larger, and the diameter of the small cylindrical boss is the same as the diameter of the round hole (10) on the indenter (1). 5. according to claim 1 or 2 described a kind of metallographic sample automatic grinding and polishing machine bottom mold fixture device, it is characterized in that: described locating pin (5) is the locating pin that has threaded portion, and described convex Threaded holes for installing positioning pins (5) are arranged in the platform (8) and the bottom mold (2). 6. according to claim 1 or 2 described a kind of metallographic sample automatic grinding and polishing machine bottom die clamping device, it is characterized in that: described clamping mechanism also comprises the first groove (4-1) that is installed in The second adjustment block (9), the second adjustment block (9) is a wedge block, and the width of the first adjustment block (7) gradually decreases from top to bottom, and the second adjustment block (9) is close to the installation groove The side of the other side wall of (4) is an inclined plane, and the side of the other side wall of the second adjustment block (9) away from the mounting groove (4) is a vertical plane. 7. according to claim 1 or 2 described a kind of metallographic sample automatic grinding and polishing machine bottom mold clamping device, it is characterized in that: described clamping mechanism also comprises the first groove (4-1) that is installed in The second adjustment block (9), the second adjustment block (9) is an L-shaped adjustment block, and the L-shaped adjustment block includes a horizontal part (9-1) and is integrated with the horizontal part (9-1) The vertical part (9-2) is shaped and arranged vertically, and the width of the vertical part (9-2) gradually decreases from top to bottom, and the other side of the vertical part (9-2) is close to the installation groove (4). The side of one side wall is an inclined plane, and the side of the other side wall of the vertical part (9-2) away from the installation groove (4) is a vertical plane.