Metallographic hardness metal grinding and polishing device

Abstract

The utility model relates to the technical field of metal grinding and polishing equipment, in particular to a metallographic hardness metal grinding and polishing device which comprises a base, the outer wall of the base is rotationally connected with the inner wall of the bottom of a lifting part, the inner wall of the lifting part is rotationally connected with the outer wall of a control part, and the outer wall of the control part is rotationally connected with the inner wall of the base. A rocker is rotated to drive a first rotating shaft to rotate, when the first rotating shaft rotates, a bevel gear drives a screw rod to rotate so as to drive a second rotating shaft to rotate, the screw rod rotates to move up and down along a threaded block through threads, when the screw rod moves up and down, a lever is driven to rotate around a fixed shaft, and the screw rod ascends and a clamp part descends for grinding. The screw descends, the clamp piece ascends to replace a sample, grinding operation and clamping operation of the clamp piece and the grinding disc are achieved, the three bevel gears are different in tooth number and used for increasing or decreasing the rotating speed and the lifting speed, and the grinding requirement is met while the clamp piece rotates in the lifting process of the screw.

Description

Technical Field

[0001] The utility model relates to the technical field of zinc oxide resistors, in particular to a metallographic hardness metal grinding and polishing device. Background Art

[0002] In materials science research, metallographic analysis is an important means of revealing a material's microstructure and evaluating its properties. The preparation of metallographic specimens is a key step in metallographic analysis, requiring a highly flat and smooth surface to more accurately observe characteristics such as the material's microstructure, grain size, and distribution.

[0003] At present, most hardness tests on the market require manual grinding of both ends of the sample to remove the curling burrs left by cutting, clean the surface after grinding both ends, and perform hardness tests on the hardness tester. Manual grinding and polishing of the sample is not flat and smooth, and manual grinding of multiple samples is time-consuming. At the same time, the sample specifications are different and need to be distinguished during grinding and polishing, which easily leads to mixed samples. Utility Model Content

[0004] The purpose of the present utility model is to provide a metallographic hardness metal grinding and polishing device to solve the problem of uneven and rough surface of manually polished specimens mentioned in the above-mentioned background art. To achieve the above-mentioned purpose, the present utility model provides the following technical solution: A metallographic hardness metal grinding and polishing device comprises a base, the outer wall of the base being rotatably connected to the inner wall of the bottom of a lifting member, the inner wall of the lifting member being rotatably connected to the outer wall of a control member, the outer wall of the control member being rotatably connected to the inner wall of the base, and the control member being composed of a rocker, a first rotating shaft, a screw, a second rotating shaft, a threaded block, and a support shaft.

[0005] One end of the lifting member is fixedly welded to the right side of the rotating member, the outer wall of the bottom of the rotating member is fixedly welded to the outer wall of the flip member, and one end of the flip member is fixedly welded to the back side of the clamp member, and the clamp member includes a guide block, a fixed clamp plate, a movable clamp plate and a bolt.

[0006] Preferably, the base consists of a support column, a support platform, a reinforcement block, a fixed shaft and a rotating hole. The top of the support column is fixedly connected to the bottom of the support platform, and the bottom of the support platform near the support column is fixedly connected to the top of the reinforcement block. The left side of the reinforcement block is fixedly connected to the right side of the support column, and the inner side wall of the left side of the support platform is fixedly connected to the outer walls at both ends of the fixed shaft respectively. A rotating cavity is opened on the right side of the support platform, and rotating holes are opened on the front and back of the rotating cavity.

[0007] Preferably, the lifting member includes a lever, a support block and a protective box, the outer wall of the center of the lever is fixedly connected to the inner wall of the top of the support block, and one end of the lever is fixedly welded to the left side of the protective box, and the inner wall of the bottom of the support block is rotatably connected to the outer wall of the fixed shaft.

[0008] Preferably, the outer wall of the rocker is fixedly welded to the outer wall of one end of the first rotating shaft, and the other end of the first rotating shaft, the top of the screw and the end of the second rotating shaft close to the protection box are all provided with a bevel gear, the other end of the first rotating shaft is meshed with the top of the screw through the bevel gear, and the top of the screw is meshed with the end of the second rotating shaft close to the protection box through the bevel gear, the outer walls of the first rotating shaft, the screw and the second rotating shaft are all rotatably connected to the inner wall of the protection box, and the outer wall of the bottom end of the screw is threadedly connected to the inner wall of the threaded block, the front and back sides of the threaded block are fixedly connected to one end of the support shaft, and the outer wall of the support shaft is rotatably connected to the inner wall of the rotating hole, and the outer wall of the second rotating shaft is rotatably connected to the inner wall of the lever.

[0009] Preferably, the rotating part includes a transmission block, a connecting rod, a support plate, a fixed rod, a connecting plate and a small spirit level. The bottom of the transmission block is fixedly welded to the top of the connecting rod, and the bottom end of the connecting rod is fixedly welded to the top of the support plate. The inner side walls of the support plate are respectively fixedly connected to the two ends of the fixed rod, and the outer wall of the fixed rod is rotatably connected to the inner wall of the connecting plate. A small spirit level is fixedly installed on the top of the connecting plate, and the right side of the transmission block is fixedly welded to the end of the lever away from the protective box.

[0010] Preferably, the flip part consists of a connecting block, a flip column, a limit block, a locking arc block, a connecting column, a stud and a toggle block, the inner wall of the connecting block is rotatably connected to the outer wall of the flip column, and the connecting block is provided with an arc-shaped slot near the inner wall of the flip column, the outer wall of the flip column is fixedly welded to the outer wall of the limit block, and the limit block is slidably connected to the inner wall of the arc-shaped slot away from the outer wall of the flip column, the outer wall of the bottom of the flip column movably abuts against the inner wall of the locking arc block, and the outer wall of the locking arc block is fixedly welded to the outer wall of the top end of the connecting column, the outer wall of the bottom end of the connecting column is rotatably connected to the inner wall of the top end of the stud, and the outer wall of the stud is threadedly connected to the inner wall of the bottom of the connecting block, the bottom end of the stud is fixedly connected to the top of the toggle block, and the outer wall of the connecting block is fixedly welded to the outer wall of the bottom of the connecting plate.

[0011] Preferably, the number of the fixed clamps and the movable clamps is set to three, and the inner wall of the guide block is fixedly connected to the outer walls on both sides of the three fixed clamps respectively, the inner wall of the guide block is slidably connected to the outer walls on both sides of the three movable clamps respectively, and each fixed clamp and movable clamp form a group, the three groups of fixed clamps and movable clamps are provided with corrugated circular grooves with different apertures, and the front sides of the three groups of fixed clamps are fixedly connected to the back sides of the movable clamps by bolts, and the back side of one of the fixed clamps is fixedly welded to one end of the flip column.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the utility model, the first rotating shaft is driven to rotate by rotating the rocker, and when the first rotating shaft rotates, the screw is driven to rotate through the bevel gear and then the second rotating shaft is driven to rotate. The rotation of the screw causes it to move up and down along the threaded block through the thread. When the screw moves up and down, it drives the lever to rotate around the fixed axis. When the screw rises, the fixture part descends for grinding, and when the screw descends, the fixture part rises to replace the sample, thereby realizing the grinding and clamping operations of the fixture and the grinding wheel. The number of teeth on the three bevel gears is different, which is used to increase or decrease the rotation speed and the lifting speed, so that the fixture part rotates during the screw lifting process while meeting the grinding requirements. The error of using the device instead of manual grinding and polishing is small, and the sample is smoother.

[0014] In the utility model, the base is fixed on the desktop by a support column. When clamping, the movable clamping plate is moved for clamping. The movable clamping plate and the fixed clamping plate are connected by bolts to complete the locking of the fixture. Different apertures can accommodate hardness specimens of various diameters, and the size and quantity of the test can be customized.

[0015] In the utility model, the connecting plate can be rotated in the supporting plate by the fixing rod, and the clamp can be kept in a vertical state at all times during the grinding process due to the action of gravity, until the clamp is completely rotated away from the grinding disc, thereby avoiding uneven grinding caused by the rotation of the clamp during the rotation process. The small level is convenient for observing the grinding angle of the clamp to always maintain a vertical state.

[0016] In the utility model, when one side of the wire sample is polished, the rotating toggle block drives the stud to rotate, so that the stud moves downward along the axis of the connecting block, thereby causing the locking arc block to disengage from the flip column. After the flip column is rotated one hundred and eighty degrees, the reverse rotating toggle block drives the stud to move upward, so that the locking arc block contacts and locks with the flip column, and the polishing of the other side continues. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 It is an exploded view of the utility model;

[0020] Figure 4 It is a cross-sectional view of the base in the utility model;

[0021] Figure 5 This is an exploded view of the flip member in the present utility model;

[0022] Figure 6 It is a cross-sectional view of the flip member in the present utility model;

[0023] Figure 7This is an overall diagram of the fixture in the present invention.

[0024] In the figure: 1. Base; 101. Support column; 102. Support platform; 103. Reinforcement block; 104. Fixed shaft; 105. Rotary hole; 2. Lifting member; 201. Lever; 202. Support block; 203. Protective box; 3. Control member; 301. Rocker; 302. First rotating shaft; 303. Screw; 304. Second rotating shaft; 305. Threaded block; 306. Support shaft; 4. Rotating member; 401. Transmission block ; 402, connecting rod; 403, support plate; 404, fixing rod; 405, connecting plate; 406, small level; 5, flip part; 501, connecting block; 502, flip column; 503, limit block; 504, locking arc block; 505, connecting column; 506, stud; 507, toggle block; 6, clamp part; 601, guide block; 602, fixed card plate; 603, movable card plate; 604, bolt. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0026] See also Figures 1 to 7 The utility model provides a technical solution: a metallographic hardness metal grinding and polishing device, including a base 1, the outer wall of the base 1 is rotatably connected to the inner wall of the bottom of the lifting member 2, the inner wall of the lifting member 2 is rotatably connected to the outer wall of the operating member 3, the outer wall of the operating member 3 is rotatably connected to the inner wall of the base 1, and the operating member 3 is composed of a rocker 301, a first rotating shaft 302, a screw 303, a second rotating shaft 304, a threaded block 305 and a support shaft 306.

[0027] One end of the lifting part 2 is fixedly welded to the right side of the rotating part 4, the outer wall of the bottom of the rotating part 4 is fixedly welded to the outer wall of the flip part 5, and one end of the flip part 5 is fixedly welded to the back side of the clamp part 6. The clamp part 6 includes a guide block 601, a fixed clamp plate 602, a movable clamp plate 603 and a bolt 604.

[0028] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, the base 1 consists of a support column 101, a support platform 102, a reinforcement block 103, a fixed shaft 104 and a rotation hole 105. The top of the support column 101 is fixedly connected to the bottom of the support platform 102, and the support platform 102 is fixedly connected to the top of the reinforcement block 103 near the bottom of the support column 101. The left side of the reinforcement block 103 is fixedly connected to the right side of the support column 101, and the inner side wall of the left side of the support platform 102 is fixedly connected to the outer walls at both ends of the fixed shaft 104. A rotation cavity is opened on the right side of the support platform 102, and rotation holes 105 are opened on the front and back of the rotation cavity. The base 1 is fixed on the desktop through the support column 101.

[0029] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the lifting member 2 includes a lever 201, a support block 202 and a protective box 203. The outer wall of the center of the lever 201 is fixedly connected to the inner wall of the top of the support block 202, and one end of the lever 201 is fixedly welded to the left side of the protective box 203. The inner wall of the bottom of the support block 202 is rotatably connected to the outer wall of the fixed shaft 104. The protective box 203 can protect the internal parts.

[0030] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the outer wall of the rocker 301 is fixedly welded to the outer wall of one end of the first rotating shaft 302, and the other end of the first rotating shaft 302, the top of the screw 303 and the end of the second rotating shaft 304 close to the protection box 203 are all provided with bevel gears. The other end of the first rotating shaft 302 is meshed with the top of the screw 303 through the bevel gear, and the top of the screw 303 is meshed with the end of the second rotating shaft 304 close to the protection box 203 through the bevel gear. The outer walls of the first rotating shaft 302, the screw 303 and the second rotating shaft 304 are all rotatably connected to the inner wall of the protection box 203, and the outer wall of the bottom end of the screw 303 is connected to the threaded block 3 05 is threadedly connected, the front and back of the threaded block 305 are fixedly connected to one end of the support shaft 306, and the outer wall of the support shaft 306 is rotatably connected to the inner wall of the rotating hole 105, and the outer wall of the second rotating shaft 304 is rotatably connected to the inner wall of the lever 201, and the first rotating shaft 302 is driven to rotate by rotating the rocker 301. When the first rotating shaft 302 rotates, the screw 303 is driven to rotate through the bevel gear and then the second rotating shaft 304 is driven to rotate. The rotation of the screw 303 causes it to move up and down along the threaded block 305 through the thread. When the screw 303 moves up and down, it drives the lever 201 to rotate around the fixed axis 104.

[0031] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the rotating part 4 includes a transmission block 401, a connecting rod 402, a support plate 403, a fixed rod 404, a connecting plate 405 and a small spirit level 406. The bottom of the transmission block 401 is fixedly welded to the top of the connecting rod 402, and the bottom end of the connecting rod 402 is fixedly welded to the top of the support plate 403. The inner side walls of the support plate 403 are respectively fixedly connected to the two ends of the fixed rod 404, and the outer wall of the fixed rod 404 is rotatably connected to the inner wall of the connecting plate 405. A small spirit level 406 is fixedly installed on the top of the connecting plate 405, and the right side of the transmission block 401 is fixedly welded to the end of the lever 201 away from the protective box 203. The connecting plate 405 can be rotated in the support plate 403 through the fixed rod 404. The small spirit level 406 is convenient for observing the grinding angle and always keeps it vertical.

[0032] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the flip member 5 is composed of a connecting block 501, a flip column 502, a limiting block 503, a locking arc block 504, a connecting column 505, a stud 506 and a toggle block 507. The inner wall of the connecting block 501 is rotatably connected to the outer wall of the flip column 502, and the connecting block 501 is provided with an arc-shaped sliding groove near the inner wall of the flip column 502. The outer wall of the flip column 502 is fixedly welded to the outer wall of the limiting block 503, and the limiting block 503 is slidably connected to the inner wall of the arc-shaped sliding groove away from the outer wall of the flip column 502. The outer wall of the bottom of the flip column 502 is movably abutted against the inner wall of the locking arc block 504, and the outer wall of the locking arc block 504 is fixedly welded to the outer wall of the top of the connecting column 505. The outer wall of the end is rotatably connected to the inner wall of the top of the stud 506, and the outer wall of the stud 506 is threadedly connected to the inner wall of the bottom of the connecting block 501, the bottom end of the stud 506 is fixedly connected to the top of the toggle block 507, and the outer wall of the connecting block 501 is fixedly welded to the outer wall of the bottom of the connecting plate 405. Rotating the toggle block 507 drives the stud 506 to rotate, so that the stud 506 moves downward along the axis of the connecting block 501, thereby disengaging the locking arc block 504 from contact with the flip column 502. After rotating the flip column 502 one hundred and eighty degrees, the toggle block 507 is rotated in the opposite direction to drive the stud 506 to move upward, so that the locking arc block 504 contacts and locks with the flip column 502, and then the other side continues to be polished.

[0033] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the number of fixed clamps 602 and movable clamps 603 is set to three, and the inner wall of the guide block 601 is fixedly connected to the outer walls on both sides of the three fixed clamps 602 respectively, and the inner wall of the guide block 601 is slidably connected to the outer walls on both sides of the three movable clamps 603 respectively, and each fixed clamp 602 and movable clamp 603 form a group, and the three groups of fixed clamps 602 and movable clamps 603 are provided with corrugated circular grooves of different apertures, and the front sides of the three groups of fixed clamps 602 are fixedly connected to the back sides of the movable clamps 603 by bolts 604, and the back side of one of the fixed clamps 602 is fixedly welded to one end of the flip column 502. When clamping, the movable clamp 603 is moved for clamping, and the movable clamp 603 and the fixed clamp 602 are connected by bolts 604 to complete the locking of the fixture 6. Different apertures can accommodate hardness specimens of various diameters, and the size and quantity of the test assembly can be customized.

[0034] The use method and advantages of this utility model: When the metallographic hardness metal grinding and polishing device is working, the working process is as follows:

[0035] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7303 is moved up and down along the threaded block 305, and when the screw 303 moves up and down, it drives the lever 201 to rotate around the fixed axis 104, and the screw 303 rises and the fixture 6 descends for grinding, and the screw 303 descends and the fixture 6 rises to replace the sample, thereby realizing the grinding operation and clamping operation of the fixture 6 and the grinding wheel. The number of teeth of the three bevel gears is different, which is used to increase or decrease the rotation speed and lifting speed, so that the screw The grinding wheel 402 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated 180 degrees, and the grinding wheel 403 is rotated

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Persons skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A metallographic hardness metal grinding and polishing device, comprising a base (1), characterized in that: The outer wall of the base (1) is rotatably connected to the inner wall of the bottom of the lifting member (2), the inner wall of the lifting member (2) is rotatably connected to the outer wall of the control member (3), the outer wall of the control member (3) is rotatably connected to the inner wall of the base (1), and the control member (3) is composed of a rocker (301), a first rotating shaft (302), a screw (303), a second rotating shaft (304), a threaded block (305) and a support shaft (306); One end of the lifting member (2) is fixedly welded to the right side of the rotating member (4), the outer wall of the bottom of the rotating member (4) is fixedly welded to the outer wall of the flip member (5), and one end of the flip member (5) is fixedly welded to the back side of the clamp member (6), and the clamp member (6) includes a guide block (601), a fixed clamping plate (602), a movable clamping plate (603) and a bolt (604).

2. The metallographic hardness metal grinding and polishing device according to claim 1, characterized in that: The base (1) is composed of a support column (101), a support platform (102), a reinforcement block (103), a fixed shaft (104) and a rotation hole (105); the top of the support column (101) is fixedly connected to the bottom of the support platform (102), and the bottom of the support platform (102) close to the support column (101) is fixedly connected to the top of the reinforcement block (103); the left side of the reinforcement block (103) is fixedly connected to the right side of the support column (101), and the inner side wall of the left side of the support platform (102) is fixedly connected to the outer walls of both ends of the fixed shaft (104); a rotation cavity is provided on the right side of the support platform (102), and rotation holes (105) are provided on the front and back sides of the rotation cavity.

3. The metallographic hardness metal grinding and polishing device according to claim 2, characterized in that: The lifting member (2) comprises a lever (201), a support block (202) and a protection box (203); the outer wall at the center of the lever (201) is fixedly connected to the inner wall at the top of the support block (202); one end of the lever (201) is fixedly welded to the left side of the protection box (203); and the inner wall at the bottom of the support block (202) is rotatably connected to the outer wall of the fixed shaft (104).

4. The metallographic hardness metal grinding and polishing device according to claim 3, characterized in that: The outer wall of the rocker (301) is fixedly welded to the outer wall of one end of the first rotating shaft (302), and the other end of the first rotating shaft (302), the top of the screw (303) and the end of the second rotating shaft (304) close to the protection box (203) are all provided with bevel gears. The other end of the first rotating shaft (302) is meshed and connected with the top of the screw (303) through the bevel gear, and the top of the screw (303) is meshed and connected with the end of the second rotating shaft (304) close to the protection box (203) through the bevel gear. The outer walls of the first rotating shaft (302), the screw rod (303) and the second rotating shaft (304) are all rotatably connected to the inner wall of the protection box (203), and the outer wall of the bottom end of the screw rod (303) is threadedly connected to the inner wall of the threaded block (305). The front and back surfaces of the threaded block (305) are fixedly connected to one end of the support shaft (306), and the outer wall of the support shaft (306) is rotatably connected to the inner wall of the rotating hole (105). The outer wall of the second rotating shaft (304) is rotatably connected to the inner wall of the lever (201).

5. The metallographic hardness metal grinding and polishing device according to claim 3, characterized in that: The rotating member (4) comprises a transmission block (401), a connecting rod (402), a support plate (403), a fixed rod (404), a connecting plate (405) and a small level (406); the bottom of the transmission block (401) is fixedly welded to the top of the connecting rod (402), and the bottom end of the connecting rod (402) is fixedly welded to the top of the supporting plate (403); the inner side wall of the supporting plate (403) is fixedly connected to the two ends of the fixed rod (404), and the outer wall of the fixed rod (404) is rotatably connected to the inner wall of the connecting plate (405); the top of the connecting plate (405) is fixedly mounted with a small level (406), and the right side of the transmission block (401) is fixedly welded to the end of the lever (201) away from the protection box (203).

6. The metallographic hardness metal grinding and polishing device according to claim 5, characterized in that: The flip member (5) is composed of a connecting block (501), a flip column (502), a limiting block (503), a locking arc block (504), a connecting column (505), a stud (506) and a toggle block (507). The inner wall of the connecting block (501) is rotatably connected to the outer wall of the flip column (502), and an arc-shaped sliding groove is provided on the connecting block (501) close to the inner wall of the flip column (502). The outer wall of the flip column (502) is fixedly welded to the outer wall of the limiting block (503), and the limiting block (503) is away from the outer wall of the flip column (502) and the inner wall of the arc-shaped sliding groove. The outer wall of the bottom of the flip column (502) is movably abutted against the inner wall of the locking arc block (504), and the outer wall of the locking arc block (504) is fixedly welded to the outer wall of the top of the connecting column (505), the outer wall of the bottom end of the connecting column (505) is rotatably connected to the inner wall of the top end of the stud (506), and the outer wall of the stud (506) is threadedly connected to the inner wall of the bottom of the connecting block (501), the bottom end of the stud (506) is fixedly connected to the top of the toggle block (507), and the outer wall of the connecting block (501) is fixedly welded to the outer wall of the bottom of the connecting plate (405).

7. The metallographic hardness metal grinding and polishing device according to claim 6, characterized in that: The number of the fixed card plates (602) and the movable card plates (603) is set to three, and the inner wall of the guide block (601) is fixedly connected to the outer walls on both sides of the three fixed card plates (602), and the inner wall of the guide block (601) is slidably connected to the outer walls on both sides of the three movable card plates (603), and each fixed card plate (602) and movable card plate (603) form a group, and the three groups of fixed card plates (602) and movable card plates (603) are provided with corrugated circular grooves with different apertures, and the front sides of the three groups of fixed card plates (602) are fixedly connected to the back sides of the movable card plates (603) by bolts (604), and the back side of one of the fixed card plates (602) is fixedly welded to one end of the flip column (502).

Images