Clamp capable of customizing grinding and polishing thickness

Abstract

The utility model provides a self-defined grinding and polishing thickness fixture, including grinding and polishing machine sample table fixture and grinding thickness measuring fixture, grinding and polishing machine sample table fixture includes main body structure, sample hole, fixed bolt and connecting loop bar, grinding thickness measuring fixture includes support, jack-prop, lower support table and grinding thickness disc, the side surface of lower support table is equipped with scale mark, and the support-prop is equipped with the scale mark. The lower supporting table can move up and down, and the upper surface of the grinding thickness disc is parallel to the horizontal plane. According to the utility model, the preparation of polishing state samples under the same grinding and polishing thickness of a plurality of groups of samples can be realized, the stress of each sample is uniform, the crushing or stripping of matrix particles such as disordered scratches, trailing, inclusions and the like can be avoided, the whole operation process does not need human intervention and control, and the high-quality metallographic samples can be stably and automatically prepared. The judgment error of a sample result caused by manual sample preparation is greatly reduced, and the accuracy of a subsequent detection result is improved.

Description

Technical Field

[0001] This utility model relates to the field of metallographic sample preparation technology, and in particular to a fixture for customizing grinding and polishing thickness. Background Technology

[0002] Metallographic analysis is a crucial component of metallic materials research and quality inspection. In industries such as materials development, steel production, and metal processing, material performance testing relies heavily on metallographic analysis. With the rapid advancement of modern science and technology, metallographic testing techniques have also made unprecedented progress. To ensure that materials reveal their true morphological characteristics under a metallographic microscope, strict control over the metallographic sample preparation process is essential for metallographic testing.

[0003] The preparation of metallographic specimens begins with selecting a representative area, often a region with abnormal microstructure. Through processes such as cutting, mounting, grinding, and polishing, the metallographic specimen achieves a surface roughness that meets standard requirements for microscopic observation. The surface of the metallographic specimen should be smooth to avoid unevenness that could cause the fields of view to deviate from the same focal plane during observation. In principle, metallographic specimens should not contain residual impurities or pores. The quality of metallographic specimen preparation hinges on grinding and polishing, especially for samples analyzing internal material defects. Manual grinding and polishing are closely related to the individual's experience; the skill level of the person preparing the specimen directly determines the speed and quality of the preparation. Over-grinding or under-grinding will both fail to meet requirements, easily leading to misjudgments in subsequent testing and analysis, and affecting the accuracy of the metallographic results. With the development of technology and the application of intelligent manufacturing, fully automated metallographic sample preparation technology will become increasingly popular. Using the Tegramin-30 fully automated grinding and polishing machine produced by Stell GmbH in Germany, high-quality steel metallographic samples can be prepared automatically, efficiently, and stably by operating the equipment and adjusting the parameters. However, for special defect samples, since the defects are inside the material, their specific locations are obtained after flaw detection. However, the inspection and analysis require the polished surface of the defect location to be perfectly exposed, which requires more precise grinding and polishing processes. The automatic grinding and polishing machine alone cannot achieve precise positioning. Currently, there is no relevant precision sample preparation equipment. This utility model designs a fixture that can customize the grinding and polishing thickness. The grinding dimensions are adjusted by a scale, and then precision sample preparation is carried out on the fully automated grinding and polishing machine, solving the problem of not being able to determine the grinding depth in the early sample preparation stage. Utility Model Content

[0004] To address the aforementioned technical problems, a fixture for customizing grinding and polishing thickness is provided. The technical means employed in this invention are as follows:

[0005] A fixture for customizing grinding and polishing thickness includes: a grinding and polishing machine sample stage fixture and a grinding thickness measuring fixture. The grinding and polishing machine sample stage fixture includes a main structure, sample holes, fixing bolts and connecting sleeves. The connecting sleeves are located in the middle of the main structure. The main structure is provided with multiple sample holes. The fixing bolts are connected to the sample holes for fixing the sample inserted into the sample holes.

[0006] The grinding thickness measuring fixture includes a bracket, a top column, a lower support platform, and a grinding thickness disc. The lower support platform is installed at the bottom of the bracket, and the grinding and polishing machine sample stage fixture is placed on the lower support platform. The lower support platform is in contact with the bottom surface of the main structure. The top column is installed at the top of the bracket and is used to insert into the connecting sleeve for assembly connection. The grinding and polishing machine sample stage fixture is fixed by the top column and the lower support platform. The side of the lower support platform is provided with scale lines. The grinding thickness disc is rotatably connected to the upper outside of the lower support platform. The lower support platform has a vertical movement function, and the upper surface of the grinding thickness disc is parallel to the horizontal plane.

[0007] Furthermore, the outer wall of the main structure has multiple transverse mounting holes, which are connected to the sample holes, and the fixing bolts are placed inside the mounting holes.

[0008] Furthermore, the plurality of sample holes are evenly distributed circumferentially around the center of the main structure.

[0009] Furthermore, the main structure is in the form of a disc.

[0010] Furthermore, a central hole is provided in the middle of the connecting sleeve rod, and the top post is inserted into the central hole.

[0011] Furthermore, the cross-sectional shape of the connecting sleeve is tapered.

[0012] Furthermore, the bracket consists of a first support frame at the bottom and a second support frame connected above the first support frame. The top column is installed on the right side of the second support frame, and the lower support platform is connected to the right side of the first support frame through an adjustment mechanism. The grinding thickness plate is located above the first support frame, and the top of the first support frame is used to limit the downward movement of the grinding thickness plate.

[0013] Furthermore, the adjustment mechanism is used to enable the lower support platform to move up and down, and includes a fixed handle, four support rods and a crossbar. The crossbar is horizontally arranged, and the four support rods are distributed on the upper and lower sides of the crossbar. One end of the two upper support rods is hinged to the bottom of the lower support platform, and the other end is hinged to both ends of the crossbar. One end of the two lower support rods is hinged to the first support frame, and the other end is hinged to both ends of the crossbar. The two support rods on the left and the two support rods on the right are arranged in a symmetrical V-shaped structure.

[0014] The fixed handle is connected to the right end of the crossbar via a bearing, and the fixed handle is threadedly connected to the inner wall of the sleeve provided on the right side of the first support frame.

[0015] Furthermore, the lower support platform is a cylindrical structure.

[0016] Furthermore, the grinding thickness disc is threadedly connected to the lower support platform.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] This invention, through the coordinated operation of the sample stage fixture and grinding thickness measuring fixture of the polishing machine, enables the preparation of polished samples with the same grinding thickness from multiple samples. Each sample experiences uniform stress, ensuring the absence of messy scratches, trailing, inclusions, or other matrix particle breakage or peeling. The entire process requires no human intervention, stably and automatically preparing high-quality metallographic samples. This significantly reduces errors in sample result evaluation caused by manual sample preparation, improving the accuracy of subsequent testing results.

[0019] Based on the above reasons, this utility model can be widely promoted in fields such as metallographic sample preparation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the sample stage fixture of the fully automatic grinding and polishing machine of this utility model.

[0022] Figure 2 This is a front view of the sample stage fixture of the fully automatic grinding and polishing machine of this utility model.

[0023] Figure 3 This is a schematic diagram of the structure of the grinding thickness measuring table fixture of this utility model.

[0024] Figure 4 This is a side view of the grinding thickness measuring table fixture of this utility model.

[0025] In the diagram: 1. Sample hole; 2. Fixing bolt; 3. Connecting sleeve; 4. Top column; 5. Lower support platform; 6. Grinding thickness plate; 7. Fixing handle; 8. Support rod; 9. Crossbar. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] This invention provides a fixture for customizing the grinding and polishing thickness. The purpose of this invention is to solve the problem that existing fully automatic grinding and polishing machines cannot accurately measure grinding thickness, and to provide a fixture that can accurately measure the grinding thickness. It not only meets the requirements for efficiently and stably preparing high-quality metallographic polished samples, but also accurately measures the grinding thickness, thus achieving the goal of displaying a true, specific grinding and polishing surface.

[0028] This utility model discloses a fixture for customizing grinding and polishing thickness, which mainly consists of two parts: a sample stage fixture for a grinding and polishing machine and a grinding thickness measuring fixture.

[0029] The sample stage fixture for the polishing machine mainly consists of a main structure, sample holes 1, fixing bolts 2, and connecting sleeves 3. The main structure is disc-shaped and has multiple sample holes 1 (six sample holes 1 in this embodiment). The fixing bolts 2 are connected to the sample holes 1 to fix the samples inserted into them. The connecting sleeves 3 are located in the middle of the main structure, with the multiple sample holes 1 evenly distributed circumferentially around the center of the main structure. After hot-setting (cold-setting), a 25mm diameter inlaid sample is placed into the sample hole 1 mold for sample preparation, preferably with symmetrical placement. After the sample is placed into the mold hole (sample hole 1), the fixing bolts 2 are tightened to fix the sample. Multiple transverse mounting holes are opened on the outer wall of the main structure, communicating with the sample holes 1. The fixing bolts 2 are placed in the mounting holes, and the sample is fixed by inserting the fixing bolts 2 into the mounting holes. The connecting sleeves 3 fix the polishing machine sample stage fixture to the rotating shaft of the automatic polishing machine. The connecting sleeves 3 have a tapered cross-section.

[0030] The grinding thickness measuring fixture mainly consists of a bracket, a top column 4, a lower support platform 5, a grinding thickness disc 6, and a fixed handle 7. The lower support platform 5 is installed at the bottom of the bracket, and the grinding and polishing machine sample stage fixture is placed on the lower support platform 5. The lower support platform 5 is in contact with the bottom surface of the main structure. The top column 4 is installed at the top of the bracket and is used to insert into the connecting sleeve 3 for assembly connection. The lower support platform 5 has scale lines on its side. The grinding thickness disc 6 is rotatably connected to the upper outside of the lower support platform 5. The lower support platform 5 has a vertical movement function. The upper surface of the grinding thickness disc 6 is parallel to the horizontal plane. The size of the grinding thickness disc 6 is larger than the size of the main structure of the grinding and polishing machine sample stage fixture. The grinding thickness disc 6 can be a disc-shaped structure. The lower support platform 5 is a cylindrical structure. The support structure consists of a first support frame at the bottom and a second support frame connected above the first support frame. A top column 4 is installed on the right side of the second support frame. A lower support platform 5 is connected to the right side of the first support frame via an adjustment mechanism. The grinding thickness disc 6 is located above the first support frame, and the top of the first support frame limits the downward movement of the grinding thickness disc 6. Figure 1 The sample stage fixture of the polishing machine is placed Figure 3 When the top column 4 is in place, it fits perfectly into the center hole of the connecting sleeve rod 3, thus securing the sample stage fixture of the grinding and polishing machine; the lower support platform 5... Figure 1 The sample stage fixture of the polishing machine is placed Figure 3 When the sample stage fixture of the grinding and polishing machine is completely fixed by the top column 4 and the lower support platform 5, the grinding thickness plate 6 supports the positioning of the 6-hole sample in the sample stage fixture and can move up and down. When the grinding thickness plate 6 and the lower support platform 5 are parallel, it means that the grinding thickness of the sample is 0mm. When it moves downward, the sample is exposed with the corresponding size and then fixed with the fixing bolt 2, thereby achieving the purpose of measuring the grinding thickness of the sample.

[0031] An adjustment mechanism is mounted on the first support frame to enable the lower support platform 5 to move up and down. It includes a fixed handle 7, four support rods 8, and a crossbar 9. The crossbar 9 is horizontally positioned, and the four support rods 8 are distributed on its upper and lower sides. One end of the two upper support rods 8 is hinged to the bottom of the lower support platform 5, and the other end is hinged to both ends of the crossbar 9. One end of the two lower support rods 8 is hinged to the first support frame, and the other end is hinged to both ends of the crossbar 9. The two left and two right support rods 8 form a symmetrical V-shaped structure. The fixed handle 7 is connected to the right end of the crossbar 9 via a bearing, and the fixed handle 7 is threaded to the inner wall of the sleeve on the right side of the first support frame. By rotating the fixed handle 7, the fixed handle 7 pulls the crossbar 9 to move laterally, thereby causing the lower support platform 5, along with the grinding thickness disc 6, to move up and down via the four support rods 8. This facilitates the placement of sample stages of different thicknesses. Figure 3 As shown.

[0032] Actual usage process: Rotate the grinding thickness disk 6 to make the grinding thickness disk 6 and the lower support platform 5 at the same level. Adjust the fixing handle 7 to place the sample stage fixture of the grinding and polishing machine on the lower support platform 5 of the grinding thickness measuring fixture. The top column 4 of the grinding thickness measuring fixture should coincide with the connecting sleeve 3 of the grinding and polishing machine sample stage fixture. Lock the fixing handle 7 downwards. Then rotate the grinding thickness disk 6 so that its disk surface corresponds to the corresponding grinding and polishing thickness scale line. Insert the embedded sample into the sample hole 1 so that the lower surface of the sample contacts the grinding thickness disk 6. Adjust the fixing bolt 2 to completely fix the sample and the grinding and polishing machine sample stage fixture. Remove the grinding and polishing machine sample stage fixture and assemble it on the automatic grinding and polishing machine through the connecting sleeve 3. After setting the corresponding parameters, perform metallographic sample preparation.

[0033] This invention, through the coordinated operation of the sample stage fixture and grinding thickness measuring fixture of the polishing machine, enables the preparation of polished samples with the same grinding thickness from multiple samples. Each sample experiences uniform stress, ensuring the absence of messy scratches, trailing, inclusions, or other matrix particle breakage or peeling. The entire process requires no human intervention, stably and automatically preparing high-quality metallographic samples. This significantly reduces errors in sample result evaluation caused by manual sample preparation, improving the accuracy of subsequent testing results.

[0034] This invention is simple in principle and easy to operate. It can accurately measure the grinding thickness of the sample in the early stage, saving time for the subsequent grinding and polishing operations. It can also achieve simultaneous grinding of several samples with the same grinding thickness, which greatly improves the sample preparation efficiency and reduces the manual burden.

[0035] This invention can accurately locate and analyze the internal structure of a sample at a certain depth, with high specificity. The internal structure of the sample is accurately characterized, and the grinding and polishing effect is good. It can be promoted to scientific research and testing institutions and third-party laboratories.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fixture for customizing grinding and polishing thickness, characterized in that, include: A sample stage fixture for a grinding and polishing machine and a grinding thickness measuring fixture. The sample stage fixture for the grinding and polishing machine includes a main structure, a sample hole (1), a fixing bolt (2), and a connecting sleeve (3). The connecting sleeve (3) is located in the middle of the main structure. Multiple sample holes (1) are provided on the main structure. The fixing bolt (2) is connected to the sample hole (1) and is used to fix the sample inserted into the sample hole (1). The grinding thickness measuring fixture includes a bracket, a top column (4), a lower support platform (5), and a grinding thickness disc (6). The lower support platform (5) is installed at the bottom of the bracket, and the grinding and polishing machine sample stage fixture is placed on the lower support platform (5). The lower support platform (5) is in contact with the bottom surface of the main structure. The top column (4) is installed at the top of the bracket and is used to insert into the connecting sleeve (3) for assembly connection. The grinding and polishing machine sample stage fixture is fixed by the top column (4) and the lower support platform (5). The side of the lower support platform (5) is provided with scale lines. The grinding thickness disc (6) is rotatably connected to the upper outside of the lower support platform (5). The lower support platform (5) has a vertical movement function, and the upper surface of the grinding thickness disc (6) is parallel to the horizontal plane.

2. The fixture for custom grinding and polishing thickness according to claim 1, characterized in that, The outer wall of the main structure has multiple horizontal mounting holes, which are connected to the sample hole (1), and the fixing bolt (2) is placed in the mounting hole.

3. The fixture for custom grinding and polishing thickness according to claim 1, characterized in that, The multiple sample holes (1) are evenly distributed around the center of the main structure.

4. The fixture for custom grinding and polishing thickness according to claim 1, characterized in that, The main structure is disc-shaped.

5. The fixture for custom grinding and polishing thickness according to claim 1, characterized in that, The connecting sleeve (3) has a central hole in the middle, and the top column (4) is inserted into the central hole.

6. The fixture for custom grinding and polishing thickness according to claim 1 or 5, characterized in that, The cross-sectional shape of the connecting sleeve (3) is conical.

7. The fixture for custom grinding and polishing thickness according to claim 1, characterized in that, The bracket consists of a first support frame at the bottom and a second support frame connected above the first support frame. The top column (4) is installed on the right side of the second support frame. The lower support platform (5) is connected to the right side of the first support frame through an adjustment mechanism. The grinding thickness plate (6) is located above the first support frame. The top of the first support frame is used to limit the downward movement of the grinding thickness plate (6).

8. The fixture for custom grinding and polishing thickness according to claim 7, characterized in that, The adjustment mechanism is used to enable the lower support platform (5) to move up and down. It includes a fixed handle (7), four support rods (8) and a crossbar (9). The crossbar (9) is set horizontally. The four support rods (8) are distributed on the upper and lower sides of the crossbar (9). One end of the two upper support rods (8) is hinged to the bottom of the lower support platform (5), and the other end is hinged to both ends of the crossbar (9). One end of the two lower support rods (8) is hinged to the first support frame, and the other end is hinged to both ends of the crossbar (9). The two support rods (8) on the left and the two support rods (8) on the right are arranged in a symmetrical V-shaped structure. The fixed handle (7) is connected to the right end of the crossbar (9) via a bearing, and the fixed handle (7) is threadedly connected to the inner wall of the sleeve provided on the right side of the first support frame.

9. The fixture for custom grinding and polishing thickness according to claim 1, characterized in that, The lower support platform (5) is a cylindrical structure.

10. The fixture for custom grinding and polishing thickness according to claim 1, characterized in that, The grinding thickness plate (6) is threadedly connected to the lower support platform (5).

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