Matched clamp of full-automatic polishing and grinding machine

Abstract

According to the matched clamp of the full-automatic polishing and grinding machine, the supporting columns are arranged on the outer periphery of the sample disc in a matched mode, so that a sample is fixed and prevented from splashing out at the same time; the limiting devices and the central pressing limiting device are uniformly distributed in four directions and the top of the supporting column through bolts respectively and are used for fixing the position of a clamped sample. According to the utility model, the metallographic sample is effectively clamped and fixed, and the flexibility and the efficiency of metallographic sample preparation are improved especially for large-size or special-shaped samples which are not easy to inlay. Meanwhile, the stability and the safety of the sample in the grinding and polishing process are ensured by optimizing the connection mode and adding the design of the anti-skid head. The metallographic sample preparation device is simple in structure and convenient to operate in the using process of the metallographic polishing and grinding machine, automation of metallographic sample preparation can be achieved, metallographic sample preparation efficiency is improved, cost is reduced, and batch production and use can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of metallographic specimen analysis in the metallurgical industry, and particularly to a grinding fixture for a metallographic polishing machine. Background Art

[0002] In materials science and the metallurgical industry, the preparation and analysis of metallographic specimens play a crucial role. This process requires the specimens to have a high degree of flatness and precision to ensure the accuracy and reliability of microscopic structure observation. For this purpose, fully automatic metallographic grinding machines have emerged. Such devices integrate multiple functions such as pre-grinding, grinding, and polishing. They adopt a single-disk design, realizing the automation of the grinding and polishing process, and significantly improving the efficiency and consistency of metallographic specimen preparation.

[0003] However, despite the many conveniences brought by fully automatic metallographic grinding machines, there are still many challenges in the specimen preparation process. First of all, the two processes of specimen embedding and grinding take up most of the specimen preparation process. Specimen embedding is to make the specimen into a standard shape so that it can be placed in a standard hole for subsequent processing. However, this process has extremely high requirements for the quality of the embedding material, and the material cost is not low. More importantly, specimen embedding not only increases the complexity of specimen preparation but also prolongs the overall specimen preparation cycle.

[0004] The original intention of specimen embedding is to ensure that the size and shape of the specimen meet the analysis requirements, facilitate clamping and operation, and reduce the problem of uneven grinding caused by too small or irregularly shaped specimens. However, for some large-sized or specially shaped specimens, embedding is not necessary or feasible. In addition, specimen embedding may also introduce additional stress or deformation, affecting the authenticity of the specimen. Content of the Utility Model

[0005] In order to solve the deficiencies of the prior art, the purpose of the utility model is to provide a fixture for a fully automatic polishing machine, which is used to clamp the metallographic specimen to be processed. To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The first aspect of the utility model provides a grinding fixture for a metallographic polishing machine, including:

[0007] A central connecting head, one end of the central connecting head is connected to the clamping member of the polishing machine, and the other end is connected to the specimen disk;

[0008] A specimen disk, the center position of the upper surface of the specimen disk is connected to the central connecting head, a first hole is provided at the center position of the bottom surface of the specimen disk, the first hole is provided with threads and is connected to a central downward pressing limiting device;

[0009] At least two support columns, the support columns are distributed in a circular array on the outer periphery of the bottom surface of the specimen disk;

[0010] The limiting device comprises a second through hole and a first bolt matched with the second through hole, wherein the second through hole is arranged on the supporting column, and a thread is arranged in the second through hole, and the sample is clamped and held by adjusting the position of the first bolt relative to the second through hole;

[0011] The central downward pressure limiting device is threadedly connected to the first hole and comprises a nut and a second bolt. By adjusting the position of the second bolt relative to the first hole, the sample is pressed downward and the height of the sample is fixed at the same time.

[0012] In a preferred embodiment, the first hole can be a blind hole or a through hole.

[0013] In a preferred embodiment, the central connector is also provided with a buckle.

[0014] Preferably, the buckle is arranged at one end of the central connector connected to the polishing machine to ensure a stable connection and facilitate disassembly.

[0015] In a preferred embodiment, the contact area between the central connector and the sample disk is not less than the contact area between the central connector and the polisher, so as to prevent the central connector from breaking when the sample disk rotates.

[0016] In a preferred embodiment, the number of the support columns is four, and the four support columns are evenly distributed on the outer periphery of the bottom surface of the sample disk in a ring array, ensuring that each support column is equally spaced at the edge of the sample disk.

[0017] Preferably, four of the support columns are provided with four of the first bolts.

[0018] In a preferred embodiment, the first bolt is selected from: one or a combination of: a fully threaded bolt, a partially threaded bolt, a screw, a U-bolt (riding bolt), an anchor bolt, a shoulder bolt, a cone head bolt, a square head bolt, a countersunk bolt, an external hexagon bolt, a internal hexagon bolt, a fixing bolt, and an expansion bolt.

[0019] In a preferred embodiment, the second bolt is selected from: one or a combination of: a fully threaded bolt, a partially threaded bolt, a screw, a U-bolt (riding bolt), an anchor bolt, a shoulder bolt, a cone head bolt, a square head bolt, a countersunk bolt, an external hexagon bolt, a internal hexagon bolt, a fixing bolt, and an expansion bolt.

[0020] In a preferred embodiment, a first anti-slip head is provided at one end of the first bolt close to the center of the sample disk.

[0021] In a preferred embodiment, a second anti-slip head is provided at one end of the second bolt away from the sample disk.

[0022] In a preferred embodiment, the material of the first anti-slip head or the second anti-slip head is selected from one or a combination of several of: hard rubber, nylon, polyurethane.

[0023] In a preferred embodiment, the shape design of the first anti-slip head or the second anti-slip head is selected from one or a combination of several of: conical design, spherical or hemispherical design, serrated shape, wavy design, multi-pyramidal design.

[0024] Preferably, the materials of the first anti-slip head and the second anti-slip head can be the same or different.

[0025] Preferably, the shape designs of the first anti-slip head and the second anti-slip head can be the same or different.

[0026] In the specification of the present application, the polishing machine is a full-automatic polishing machine, including a clamping member and a polishing member; the clamping member is used for clamping the workpiece to be polished; the polishing member is used for polishing the sample. In the present application, the metallographic polishing machine sample holder is located between the clamping member and the polishing member of the polishing machine.

[0027] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0028] The present utility model provides a fixture for a full-automatic polishing machine. By arranging support columns on the outer periphery of the sample disk, the sample is fixed and splashing of the sample is prevented; the limiting device and the central downward pressing limiting device are respectively evenly distributed in four directions and at the top of the support columns through bolts to fix the position of clamping the sample. The present utility model realizes effective clamping and fixing of the metallographic sample, especially for large-size or special-shaped samples that are not easy to embed, improving the flexibility and efficiency of metallographic sample preparation. At the same time, by optimizing the connection method and adding the anti-slip head design, the stability and safety of the sample during grinding and polishing are ensured. Moreover, the structure of the present utility model is simple, convenient to operate during the use of the metallographic polishing machine, can realize the automation of metallographic sample preparation, improve the efficiency of metallographic sample preparation, reduce costs, and can be mass-produced and used. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 It is the bottom view of the metallographic polishing machine sample holder in the embodiment of the present utility model.

[0031] Figure 2This is the overall schematic diagram of the sample grinding fixture of the metallographic polishing machine in the embodiment of the present utility model.

[0032] The description of the reference numerals in the drawings is as follows:

[0033] 1. Central connection head; 2. Specimen disk; 3. Support column; 4. Limiting device; 5. Central downward limiting device; 6. First anti-slip head; 7. First bolt; 8. Second anti-slip head. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0035] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0036] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0038] Embodiment

[0039] This embodiment provides a fixture for a fully automatic polishing machine, and the structure is as shown in Figure 1 , 2 and includes:

[0040] A central connector 1, designed as a solid cylindrical shape, is stably connected to the polishing machine at one end through a buckle to ensure no loss of transmitted power. The buckle is designed with spring loading, which not only ensures the stability of the connection but also facilitates quick disassembly and installation. The other end is closely attached to the specimen disk 2 by welding, and the contact area is not less than its contact area with the polishing machine to disperse the stress generated during rotation and prevent fracture.

[0041] A specimen disk 2, at the center of the bottom surface of the specimen disk 2, there is a precision-machined first hole with internal threads inside. The upper surface of the specimen disk 2 is flat to ensure the stability of specimen placement; at the center of the lower bottom surface, a central downward pressing limit device 5 is installed and connected. The center of the central downward pressing limit device 5 is provided with a nut and a second bolt that cooperates with the nut. By adjusting the position of the second bolt in the first hole, precise downward pressing and height fixation of the specimen can be achieved.

[0042] Four support columns 3 of equal length are selected and welded in a circular array evenly distributed on the outer periphery of the bottom surface of the specimen disk. A second through hole is provided at the center of each support column 3, and a first bolt 7 is equipped.

[0043] The first bolt 7 can be adjusted through thread cooperation with the second through hole, and can flexibly clamp and hold the specimen evenly from all around to ensure that the specimen will not shift or loosen during rotation.

[0044] At the center end of each first bolt 7 near the specimen disk 2, there is a first anti-slip head 6, which is made of wear-resistant hard rubber material and is designed to be conical to increase the friction force with the specimen contact surface and prevent slipping.

[0045] At the end of the second bolt far from the specimen disk 2, there is also a second anti-slip head 8, which is made of nylon material and is designed in a hemispherical shape. It not only ensures the anti-slip effect but also facilitates automatic centering during rotation adjustment, reducing the operation difficulty.

[0046] Although the first anti-slip head 6 and the second anti-slip head 8 are made of different materials, both are made of high-quality wear-resistant and anti-aging materials to ensure stability and reliability under long-term use. The shape design fully considers the clamping effect and operation convenience, ensuring that while providing sufficient clamping force, it can also reduce specimen damage caused by improper clamping.

[0047] The using process of the fixture for the fully automatic polishing machine described in this embodiment includes the following steps:

[0048] S1. Install the fixture onto the grinding machine:

[0049] First, connect one end of the central connector 1 to the grinding machine stably through a spring-loaded buckle. Ensure the connection is firm to transmit power without loss.

[0050] Check whether the connection is stable to avoid loosening or falling off during rotation.

[0051] S2. Prepare the specimen:

[0052] Place the specimen to be ground on the upper surface of the specimen tray 2, ensuring the specimen is stable and does not shake.

[0053] Check whether the specimen is placed in the appropriate position to avoid collision with the fixture edge or other components during rotation.

[0054] S3. Adjust the central downward limit device 5:

[0055] Pass the second bolt through the first hole of the specimen tray 2 and the nut of the central downward limit device 5, and adjust its position in the thread by rotating the second bolt.

[0056] Precisely adjust the position of the second bolt according to the height of the specimen and the required downward pressure to achieve precise downward pressing and height fixation of the specimen.

[0057] S4. Clamp the specimen:

[0058] By rotating the first bolts 7 on the four equal-length support columns 3, which are adjusted through threaded fit with the second through holes, gradually approach the specimen.

[0059] The first anti-slip heads 6 at the center end of each first bolt 7 near the specimen tray 2 will evenly press against the edge of the specimen to ensure the specimen is evenly clamped.

[0060] Continue to adjust the first bolts 7 until the specimen is firmly clamped and will not shift or loosen during rotation.

[0061] S5. Check and start the grinding machine:

[0062] After all components are adjusted, conduct a final inspection to ensure all connections are tightened and the specimen is stably clamped.

[0063] Start the grinding machine to make the specimen start to rotate and be ground under the drive of the clamping component of the grinding machine.

[0064] S6. Observe and adjust:

[0065] During the grinding process, pay attention to observing the grinding situation of the specimen and adjust the grinding parameters (such as rotation speed, grinding time, etc.) as needed.

[0066] If it is found that the specimen is offset or loose, stop the machine immediately for inspection and readjust the fixture.

[0067] S7. Finish polishing and disassemble the fixture:

[0068] After polishing is completed, turn off the polishing machine and wait for the fixture and the specimen to stop rotating completely.

[0069] Disassemble the first bolt 7 and the second bolt to release the clamping force and the downward pressure on the specimen.

[0070] Remove the specimen from the specimen tray 2 and perform subsequent processing or analysis.

[0071] Finally, remove the fixture from the polishing machine, clean and maintain it for future use.

[0072] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A fixture for a fully automatic polishing machine, characterized in that include: A central connector, one end of which is connected to a clamping member of the polishing machine, and the other end of which is connected to a sample plate; A sample tray, wherein the center position of the upper surface of the sample tray is connected to the center connector, and the center position of the bottom surface of the sample tray is provided with a first hole, wherein the first hole is provided with a thread and is connected to a center downward pressure limit device; at least two support columns, the support columns being distributed in a ring array on the outer periphery of the bottom surface of the sample disk; The limiting device comprises a second through hole and a first bolt matched with the second through hole, wherein the second through hole is arranged on the supporting column, and a thread is arranged in the second through hole, and the sample is clamped and held by adjusting the position of the first bolt relative to the second through hole; The central downward pressure limiting device is threadedly connected to the first hole and comprises a nut and a second bolt. By adjusting the position of the second bolt relative to the first hole, the sample is pressed downward and the height of the sample is fixed at the same time.

2. The fixture according to claim 1, wherein The central connector is also equipped with a buckle; The buckle is arranged at one end of the central connector connected to the polishing machine to ensure a stable connection and facilitate disassembly.

3. The fixture according to claim 1, wherein The contact area between the central connector and the sample disk is not less than the contact area between the central connector and the polishing machine.

4. The fixture according to claim 1, characterized in that, The number of the support columns is four, and the four support columns are evenly distributed on the outer periphery of the bottom surface of the sample plate in a ring array; The four support columns are provided with four first bolts.

5. The fixture according to claim 1, wherein One end of the first bolt close to the center of the sample disk is provided with a first anti-slip head.

6. The fixture according to claim 5, wherein A second anti-slip head is provided at one end of the second bolt away from the sample plate.

7. The fixture according to claim 6, characterized in that, The material of the first anti-slip head or the second anti-slip head is selected from: hard rubber, nylon, polyurethane or a combination thereof.

8. The fixture according to claim 6, characterized in that, The shape design of the first anti-slip head or the second anti-slip head is selected from: a conical design, a spherical or hemispherical design, a sawtooth design, a wavy design, a multi-faceted pyramid design, or a combination of several of them.

9. The jig according to claim 6, wherein The materials of the first anti-slip head and the second anti-slip head may be the same or different.

10. The jig according to claim 6, wherein The shapes of the first anti-slip head and the second anti-slip head may be the same or different.

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