Grinding machine suitable for grinding workpieces with different diameters

Abstract

The utility model belongs to the technical field of grinding equipment, and particularly relates to a grinding machine suitable for grinding workpieces with different diameters, which comprises a first box body, a protective cover body is arranged at the top end of the first box body, a supporting plate is arranged at the rear end in the protective cover body, and the bottom end of the supporting plate is arranged at the rear end of the bottom of the first box body. A top plate is mounted at the top end of the supporting plate, an X-axis linear motor module is mounted on the lower surface of the top plate, a first mounting plate is arranged at the bottom of the X-axis linear motor module, the lower surface of the first mounting plate is connected with a second mounting plate through a connecting rod, and a gear motor is mounted on one side of the upper surface of the second mounting plate. And a driving gear is mounted on an output shaft of the speed reducing motor. The grinding device is not only suitable for grinding workpieces with different diameters, but also capable of collecting powder and chippings generated by grinding, the situation that equipment and the working environment are polluted by the powder and the chippings generated by grinding is avoided, and practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding equipment, and in particular relates to a grinding machine suitable for grinding workpieces with different diameters. Background Art

[0002] A grinder is a machine tool that uses abrasive tools to grind workpieces to obtain the required shape, size and precision machined surface. The processing action of a grinder is grinding. Grinding is the primary work in mechanical processing. The sharpening of cutting tools and the precise manufacturing of mechanical parts all depend on grinding. Grinding is also a part of precision machining. The function of a grinder is to perform high-precision grinding and relatively small roughness grinding, and can perform high-efficiency grinding. A grinder can process materials with relatively high hardness such as hardened steel and cemented carbide, and can also process materials with relatively high brittleness such as glass and granite.

[0003] After searching, the patent announcement number CN115847221A discloses a workpiece grinding machine for trimming weld points, including a base, a support frame and an external frame. The two sides of the top of the base are equipped with support frames, and the inner wall of the support frame is equipped with a conveyor belt device. The top of the conveyor belt device is provided with a workpiece, and the top of the support frame is equipped with a feeding mechanism for limiting the displacement of the workpiece. One side of the support frame is equipped with an external frame, and the inner wall of the external frame is equipped with a main shaft through a bearing. The outer wall of the external frame is equipped with a second motor, and the output end of the second motor is connected to the outer wall of the main shaft, and the outer wall of the main shaft is equipped with a storage tray. The workpiece grinding machine for trimming weld points adopts a baffle to transmit the workpiece at one side through the conveyor belt device to the groove, while the other side is stopped at the position above the conveyor belt device due to the baffle, and is not transported downward. This structure facilitates the sequential unloading of workpieces.

[0004] In actual use, the existing grinders for workpiece grinding are not easy to grind cylindrical workpieces of different diameters. In addition, a certain amount of powder and debris will be generated during the grinding process and fall into the equipment and the working environment. The staff is required to clean the powder and debris on the equipment, which affects the processing efficiency and the working environment. For this reason, we propose a grinder suitable for grinding workpieces of different diameters to solve the existing problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a grinding machine suitable for grinding workpieces of different diameters to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A grinding machine suitable for grinding workpieces of different diameters, comprising a first box body: a protective cover body is installed at the top of the first box body, a support plate is provided at the rear end of the protective cover body, and the bottom end of the support plate is installed at the bottom rear end of the first box body, a top plate is installed at the top of the support plate, an X-axis linear motor module is installed on the lower surface of the top plate, a first mounting plate is provided at the bottom of the X-axis linear motor module, the lower surface of the first mounting plate is connected to the second mounting plate through a connecting rod, a reduction motor is installed on one side of the upper surface of the second mounting plate, a driving gear is installed on the output shaft of the reduction motor, the driving gear is meshed and connected with the driven gear, and the driving gear passes through the strip groove at the center position of the surface of the second mounting plate The driven gear is mounted on the outer wall of the hollow annular mounting plate, a first electric push rod is mounted on the inner wall of the hollow annular mounting plate, a third mounting plate is mounted on the other end of the first electric push rod, second side plates are mounted on both sides of the other side surface of the third mounting plate, grinding rollers are mounted on the second side plates adjacent to each other in the X-axis direction, second hydraulic telescopic rods are arranged below both sides of the interior of the protective cover body, a movable plate is mounted on one end of the second hydraulic telescopic rod, a first hydraulic telescopic rod is mounted on the top of the movable plate, a fixing mechanism is mounted on the top of the first hydraulic telescopic rod, exhaust fans and plate-type air filters are mounted on both sides of the interior of the first box body, and the exhaust fan is located on one side of the plate-type air filter.

[0008] Furthermore, arc-shaped sliders are installed on the outer walls on both sides of the hollow annular mounting plate, the other end of the arc-shaped slider is installed on the hollow annular slide rail, and the arc-shaped slider and the hollow annular slide rail are slidably connected, the hollow annular slide rail is installed on the outer wall of one side of the first side plate, and the first side plate is installed on both sides of the lower surface of the second mounting plate, a first through hole is opened on the outer wall of the first side plate, and the inner sides of the first through hole, the hollow annular slide rail and the hollow annular mounting plate are interconnected.

[0009] Furthermore, the grinding roller is fixedly connected to the second side plate by fastening bolts.

[0010] Furthermore, the second hydraulic telescopic rod is installed on the top of the mounting seat, and the mounting seat is installed on both sides of the top of the first box body, and linear sliders are installed at the front and rear ends of the lower surface of the movable plate, and the bottom end of the linear slider is installed on the linear slide rail, and the linear slider and the linear slide rail are slidably connected, and the linear slide rail is installed at the front and rear ends of the top of the first box body.

[0011] Furthermore, the fixing mechanism includes a fourth mounting plate, a second electric push rod, a connecting column, a fixing splint, a second through hole and a fifth mounting plate, second through holes are opened at four corners of the surface of the fixing splint, a connecting column is installed in the second through hole, and the outer wall of the connecting column and the hole wall of the second through hole are gap-connected, the bottom end and the top end of the connecting column are respectively installed with the fifth mounting plate and the fourth mounting plate, the upper surface of the fourth mounting plate is installed with the second electric push rod, and the bottom end of the second electric push rod passes through the surface of the fourth mounting plate and is connected to the fixing splint.

[0012] Furthermore, both ends of the plate-type air filter are installed in the U-shaped groove on the U-shaped pallet, and the end walls at both ends of the plate-type air filter are gap-connected with the groove walls of the U-shaped groove on the U-shaped pallet, and the U-shaped pallet is installed on both sides of the top and bottom ends inside the first box body.

[0013] Furthermore, a third rectangular slot is provided at the center position of the top end of the first box body, air outlet slots are provided on the outer walls on both sides of the first box body, a first safety door is provided on the front end wall of the first box body, and a second safety lock is provided on the first safety door, a second rectangular slot is provided at the bottom end of the first box body, a first rectangular slot is provided below the second rectangular slot, and the first rectangular slot is provided at the center position of the top end of the second box body, the second box body is installed at the bottom end of the first box body, a collecting trough body is installed at the bottom end of the second box body, support columns are installed at the four corners of the bottom end of the first box body, a second safety door is provided on the front end wall of the second box body, and a third safety lock is provided on the second safety door.

[0014] Furthermore, air inlet slots are provided on both side outer walls of the protective cover body, a transparent safety door is provided on the front end wall of the protective cover body, and a first safety lock is provided on the transparent safety door.

[0015] By means of the above technical solution, the utility model provides a grinding machine suitable for grinding workpieces with different diameters, which has at least the following beneficial effects:

[0016] 1. The utility model is provided with a series of coordinated structures. When the staff performs grinding operation on the cylindrical workpiece, the staff starts the second hydraulic telescopic rod. The extension of the second hydraulic telescopic rod will indirectly drive the fixing mechanism to move in the X-axis direction, so as to adjust the distance between the two fixing mechanisms in the utility model. When the distance between the two fixing mechanisms is adjusted, the two fixing mechanisms fix the two ends of the cylindrical workpiece, and after the cylindrical workpiece passes through the first through hole on the first side plate, the inner side of the hollow annular slide rail and the inner side of the hollow annular mounting plate, the staff starts the first hydraulic telescopic rod. The activation of the first hydraulic telescopic rod will indirectly drive the fixed and clamped workpiece to move in the Y-axis direction. The staff uses After obtaining the workpiece located at the center position of the inner side of the hollow annular plate, the staff starts the first electric push rod, and the extension and retraction of the first electric push rod will indirectly drive the grinding roller to move. After the staff makes the grinding roller contact with the workpiece to be polished, the staff starts the reduction motor, and the start-up of the reduction motor will indirectly drive the grinding roller to rotate. The rotation of the grinding roller can grind the outer wall of the cylindrical workpiece. The staff starts the X-axis linear motor module, and the start-up of the X-axis linear motor module can indirectly drive the grinding roller to move in the X-axis direction. The grinding roller moves in the X-axis direction, so that the outer wall of the cylindrical workpiece in the X-axis direction can be polished. Therefore, the utility model is suitable for grinding workpieces of different diameters, thereby enhancing versatility.

[0017] 2. The utility model is provided with coordinated structures such as an exhaust fan, a plate-type air filter, an air inlet slot, an air outlet slot, a third rectangular slot, a second rectangular slot, and a first rectangular slot. When the utility model performs a grinding operation on a cylindrical workpiece and generates a certain amount of powder and debris, the exhaust fan is started to allow external air to enter the protective cover body from the air inlet slot, and the air in the protective cover body enters the first box body from the third rectangular slot and is discharged to the outside from the air outlet slot. During the above-mentioned air flow, the powder and debris generated by grinding also flow with the flow of air, and the plate-type air filter filters the crushed and debris in the air, and the filtered powder and debris will fall into the collecting tank body due to their own weight. Therefore, the utility model can collect the powder and debris generated by grinding, thereby avoiding the situation where the powder and debris generated by grinding pollute the equipment and the working environment, and there is no need for the staff to clean the powder and debris generated by grinding, thereby improving the efficiency of workpiece processing and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a grinding machine suitable for grinding workpieces of different diameters provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the internal structure of a grinding machine suitable for grinding workpieces of different diameters provided in an embodiment of the present application;

[0021] Figure 3 A cross-sectional view of the connection structure between the driven gear on the hollow annular mounting plate and the driving gear on the reduction motor, which is suitable for grinding workpieces with different diameters, provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the connection structure between the arc-shaped slide block and the hollow annular slide rail suitable for grinding workpieces of different diameters provided in an embodiment of the present application;

[0023] Figure 5 A cross-sectional view of a fixing mechanism suitable for grinding workpieces of different diameters provided in an embodiment of the present application.

[0024] In the figure: 1, protective cover; 2, transparent safety door; 3, first safety lock; 4, first box; 5, first safety door; 6, second safety lock; 7, second safety door; 8, third safety lock; 9, air outlet slot; 10, second box; 11, support column; 12, air inlet slot; 13, top plate; 14, X-axis linear motor module; 15, support plate; 16, first mounting plate; 17, connecting rod; 18, driving gear; 19, reduction motor; 20, first side plate; 21, arc-shaped slider; 22, first through hole; 23, first hydraulic telescopic rod; 24, second hydraulic telescopic rod; 25, mounting seat; 26, exhaust fan; 27, plate air filter Net; 28, U-shaped card plate; 29, collecting trough body; 30, first rectangular slot; 31, second rectangular slot; 32, third rectangular slot; 33, linear slide rail; 34, linear slider; 35, second mounting plate; 36, driven gear; 37, hollow annular slide rail; 38, fixing mechanism; 3801, fourth mounting plate; 3802, second electric push rod; 3803, connecting column; 3804, fixing clamp; 3805, second through hole; 3806, fifth mounting plate; 39, hollow annular mounting plate; 40, moving plate; 41, strip slot; 42, first electric push rod; 43, third mounting plate; 44, grinding roller; 45, second side plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 to 5The utility model is suitable for grinding workpieces of different diameters, and mainly includes a first box body 4: a protective cover body 1 is installed on the top of the first box body 4, a support plate 15 is provided at the rear end of the interior of the protective cover body 1, and the bottom end of the support plate 15 is installed at the bottom rear end of the first box body 4, a top plate 13 is installed on the top of the support plate 15, an X-axis linear motor module 14 is installed on the lower surface of the top plate 13, and a first mounting plate 16 is provided at the bottom of the X-axis linear motor module 14. The lower surface of the first mounting plate 16 is connected to the second mounting plate 35 through a connecting rod 17, and a reduction motor 19 is installed on one side of the upper surface of the second mounting plate 35. A driving gear 18 is installed on the output shaft of the reduction motor 19, and the driving gear 18 is meshed and connected with the driven gear 36. , and the driving gear 18 passes through the strip slot 41 at the center position of the surface of the second mounting plate 35, the driven gear 36 is installed on the outer wall of the hollow annular mounting plate 39, and the first electric push rod 42 is installed on the inner wall of the hollow annular mounting plate 39, and the other end of the first electric push rod 42 is installed with a third mounting plate 43, and the second side plates 45 are installed on both sides of the other side surface of the third mounting plate 43, and the second side plates 45 are installed with grinding rollers 44 between the two adjacent second side plates 45 in the X-axis direction, and the second hydraulic telescopic rods 24 are arranged below the two sides of the inside of the protective cover body 1, and the moving plate 40 is installed at one end of the second hydraulic telescopic rod 24, and the first hydraulic telescopic rod 23 is installed at the top of the moving plate 40, and the fixing mechanism 38 is installed at the top of the first hydraulic telescopic rod 23. , exhaust fans 26 and plate-type air filters 27 are installed on both sides of the first box body 4, and the exhaust fans 26 are located on one side of the plate-type air filters 27. When the staff performs grinding operation on the cylindrical workpiece, the staff starts the second hydraulic telescopic rod 24, and the extension of the second hydraulic telescopic rod 24 will indirectly drive the fixing mechanism 38 to move in the X-axis direction, so that the distance between the two fixing mechanisms 38 of the utility model can be adjusted. After the distance between the two fixing mechanisms 38 is adjusted, the two fixing mechanisms 38 fix the two ends of the cylindrical workpiece, and the cylindrical workpiece passes through the first through hole 22 on the first side plate 20, the inner side of the hollow annular slide rail 37 and the inner side of the hollow annular mounting plate 39, the staff starts the first The hydraulic telescopic rod 23, when the first hydraulic telescopic rod 23 is started, it will indirectly drive the fixed and clamped workpiece to move in the Y-axis direction. After the staff makes the workpiece located in the center position of the inner side of the hollow annular plate, the staff starts the first electric push rod 42. The extension of the first electric push rod 42 will indirectly drive the grinding roller 44 to move. After the staff makes the grinding roller 44 contact with the workpiece to be polished, the staff starts the reduction motor 19. The start of the reduction motor 19 will indirectly drive the grinding roller 44 to rotate. The outer wall of the cylindrical workpiece can be polished by the rotation of the grinding roller 44. The staff starts the X-axis linear motor module 14. The start of the X-axis linear motor module 14 can indirectly drive the grinding roller 44 to move in the X-axis direction.The grinding roller 44 moves in the X-axis direction so as to grind the outer wall of the cylindrical workpiece in the X-axis direction, so that the utility model is suitable for grinding workpieces of different diameters, and the versatility is enhanced. When the utility model grinds the cylindrical workpiece and generates a certain amount of powder and debris, the exhaust fan 26 is started to allow the external air to enter the protective cover body 1 from the air inlet slot 12, and the air in the protective cover body 1 enters the first box body 4 from the third rectangular slot 32 and is discharged to the outside from the air outlet slot 9. During the above air flow process, the powder and debris generated by grinding also flow with the flow of air, and the plate-type air filter 27 filters the crushed and debris in the air. The filtered powder and debris will fall into the collection tank 29 due to their own weight. Therefore, the utility model can collect the powder and debris generated by grinding, avoiding the situation where the powder and debris generated by grinding pollute the equipment and the working environment, and there is no need for the staff to clean the powder and debris generated by grinding, thereby improving the efficiency of workpiece processing.

[0027] The outer walls of both sides of the hollow annular mounting plate 39 are both installed with arc-shaped sliders 21, and the other end of the arc-shaped slider 21 is installed on the hollow annular slide rail 37, and the arc-shaped slider 21 and the hollow annular slide rail 37 are slidably connected. The coordinated arrangement of the arc-shaped slider 21 and the hollow annular slide rail 37 enhances the stability of the hollow annular mounting plate 39 during rotation. The hollow annular slide rail 37 is installed on the outer wall of one side of the first side plate 20, and the first side plate 20 is installed on both sides of the lower surface of the second mounting plate 35. A first through hole 22 is opened on the outer wall of the first side plate 20, and the inner sides of the first through hole 22, the hollow annular slide rail 37 and the hollow annular mounting plate 39 are interconnected. The grinding roller 44 is fixedly connected to the second side plate 45 by fastening bolts. 4 is fixedly connected with the second side plate 45 by fastening bolts, so that the grinding roller 44 can be disassembled and replaced, the second hydraulic telescopic rod 24 is installed on the top of the mounting seat 25, and the mounting seat 25 is installed on both sides of the top of the first box body 4, and the front and rear ends of the lower surface of the movable plate 40 are installed with linear sliders 34, the bottom end of the linear slider 34 is installed on the linear slide rail 33, and the linear slider 34 and the linear slide rail 33 are slidably connected. Due to the coordinated arrangement of the linear slider 34 and the linear slide rail 33, the stability of the movable plate 40 during movement is enhanced, and the linear slide rail 33 is installed at the front and rear ends of the top of the first box body 4. The fixing mechanism 38 includes a fourth mounting plate 3801, a second electric push rod 3802, a connecting column 3803, a fixing clamping plate 3804, and a second Through hole 3805 and fifth mounting plate 3806, second through holes 3805 are provided at four corners of the surface of fixed clamping plate 3804, connecting column 3803 is installed in the second through hole 3805, and there is a gap connection between the outer wall of connecting column 3803 and the hole wall of second through hole 3805, because there is a gap connection between the outer wall of connecting column 3803 and the hole wall of second through hole 3805, it can play a role of limiting and guiding the movement of fixed clamping plate 3804, the bottom and top ends of connecting column 3803 are respectively installed with fifth mounting plate 3806 and fourth mounting plate 3801, the upper surface of fourth mounting plate 3801 is installed with second electric push rod 3802, the bottom end of second electric push rod 3802 passes through the surface of fourth mounting plate 3801 and is connected with fixed The clamping plate 3804 is connected, both ends of the plate air filter 27 are installed in the U-shaped groove on the U-shaped card plate 28, and the end walls at both ends of the plate air filter 27 are connected with the groove walls of the U-shaped groove on the U-shaped card plate 28 with a gap. Because the end walls at both ends of the plate air filter 27 are connected with the groove walls of the U-shaped groove on the U-shaped card plate 28 with a gap, it is convenient for the staff to disassemble, replace or clean the plate air filter 27. The U-shaped card plate 28 is installed on both sides of the top and bottom ends of the first box body 4. A third rectangular slot 32 is opened at the center position of the top of the first box body 4. Air outlet slots 9 are opened on the outer walls of both sides of the first box body 4. A first safety door 5 is provided on the front end wall of the first box body 4, and a second safety lock 6 is provided on the first safety door 5.A second rectangular slot 31 is provided at the bottom of the first box 4, a first rectangular slot 30 is provided below the second rectangular slot 31, and the first rectangular slot 30 is provided at the top center of the second box 10. The second box 10 is installed at the bottom of the first box 4, a collecting tank 29 is installed at the bottom of the second box 10, and support columns 11 are installed at the four corners of the bottom of the first box 4. A second safety door 7 is provided on the front wall of the second box 10, and a third safety lock 8 is provided on the second safety door 7. Air inlet slots 12 are provided on the outer walls of both sides of the protective cover body 1, and a transparent safety door 2 is provided on the front wall of the protective cover body 1, and a first safety lock 3 is provided on the transparent safety door 2.

[0028] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding machine suitable for grinding workpieces of different diameters, characterized in that: The invention comprises a first box body (4): a protective cover body (1) is installed at the top of the first box body (4); a support plate (15) is provided at the rear end of the interior of the protective cover body (1), and the bottom end of the support plate (15) is installed at the bottom rear end of the first box body (4); a top plate (13) is installed at the top of the support plate (15); an X-axis linear motor module (14) is installed on the lower surface of the top plate (13); a first mounting plate (16) is provided at the bottom of the X-axis linear motor module (14); the lower surface of the first mounting plate (16) is connected to a second mounting plate (35) through a connecting rod (17); a reduction motor (19) is installed on one side of the upper surface of the second mounting plate (35); a driving gear (18) is installed on the output shaft of the reduction motor (19); the driving gear (18) is meshedly connected with the driven gear (36); the driving gear (18) passes through a strip-shaped slot (41) at the center position of the surface of the second mounting plate (35); the driven gear (36) is meshed with the driven gear (36); the driving gear (18) passes through a strip-shaped slot (41) at the center position of the surface of the second mounting plate (35); The gear (36) is mounted on the outer wall of a hollow annular mounting plate (39); a first electric push rod (42) is mounted on the inner wall of the hollow annular mounting plate (39); a third mounting plate (43) is mounted on the other end of the first electric push rod (42); second side plates (45) are mounted on both sides of the other side surface of the third mounting plate (43); grinding rollers (44) are mounted between the second side plates (45) adjacent to each other in the X-axis direction; second hydraulic telescopic rods (24) are arranged below both sides of the interior of the protective cover (1); a movable plate (40) is mounted on one end of the second hydraulic telescopic rod (24); a first hydraulic telescopic rod (23) is mounted on the top of the movable plate (40); a fixing mechanism (38) is mounted on the top of the first hydraulic telescopic rod (23); an exhaust fan (26) and a plate-type air filter (27) are mounted on both sides of the interior of the first box (4); and the exhaust fan (26) is located on one side of the plate-type air filter (27).

2. The grinding machine suitable for grinding workpieces with different diameters according to claim 1, characterized in that: The outer walls of both sides of the hollow annular mounting plate (39) are both mounted with arc-shaped sliders (21), the other end of the arc-shaped slider (21) is mounted on the hollow annular slide rail (37), and the arc-shaped slider (21) and the hollow annular slide rail (37) are slidably connected, the hollow annular slide rail (37) is mounted on the outer wall of one side of the first side plate (20), and the first side plate (20) is mounted on both sides of the lower surface of the second mounting plate (35), a first through hole (22) is opened on the outer wall of the first side plate (20), and the inner sides of the first through hole (22), the hollow annular slide rail (37) and the hollow annular mounting plate (39) are interconnected.

3. The grinding machine suitable for grinding workpieces with different diameters according to claim 1, characterized in that: The grinding roller (44) and the second side plate (45) are fixedly connected via fastening bolts.

4. The grinding machine suitable for grinding workpieces with different diameters according to claim 1, characterized in that: The second hydraulic telescopic rod (24) is mounted on the top of the mounting seat (25), and the mounting seat (25) is mounted on both sides of the top of the first box body (4). Linear sliders (34) are mounted on both front and rear ends of the lower surface of the movable plate (40). The bottom end of the linear slider (34) is mounted on the linear slide rail (33), and the linear slider (34) and the linear slide rail (33) are slidably connected. The linear slide rail (33) is mounted on the front and rear ends of the top of the first box body (4).

5. The grinding machine suitable for grinding workpieces with different diameters according to claim 1, characterized in that: The fixing mechanism (38) comprises a fourth mounting plate (3801), a second electric push rod (3802), a connecting column (3803), a fixing clamp (3804), a second through hole (3805) and a fifth mounting plate (3806). The fixing clamp (3804) is provided with second through holes (3805) at four corners of the surface. The second through hole (3805) is installed with a connecting column (3803), and the outer wall of the connecting column (3803) and the hole wall of the second through hole (3805) are connected with a gap. The bottom end and the top end of the connecting column (3803) are respectively installed with the fifth mounting plate (3806) and the fourth mounting plate (3801). The second electric push rod (3802) is installed on the upper surface of the fourth mounting plate (3801). The bottom end of the second electric push rod (3802) passes through the surface of the fourth mounting plate (3801) and is connected to the fixing clamp (3804).

6. The grinding machine suitable for grinding workpieces with different diameters according to claim 1, characterized in that: Both ends of the plate-type air filter (27) are mounted in U-shaped grooves on the U-shaped card plate (28), and the end walls at both ends of the plate-type air filter (27) are gap-connected to the groove walls of the U-shaped groove on the U-shaped card plate (28), and the U-shaped card plate (28) is mounted on both sides of the top end and the bottom end inside the first box body (4).

7. The grinding machine suitable for grinding workpieces with different diameters according to claim 1, characterized in that: A third rectangular slot (32) is provided at the center of the top of the first box (4), air outlet slots (9) are provided on both side outer walls of the first box (4), a first safety door (5) is provided on the front end wall of the first box (4), and a second safety lock (6) is provided on the first safety door (5), a second rectangular slot (31) is provided at the bottom of the first box (4), a first rectangular slot (30) is provided below the second rectangular slot (31), and the first rectangular slot (30) is provided at the center of the top of the second box (10), the second box (10) is mounted at the bottom of the first box (4), a collecting tank (29) is installed at the bottom of the second box (10), support columns (11) are installed at the four corners of the bottom of the first box (4), a second safety door (7) is provided on the front end wall of the second box (10), and a third safety lock (8) is provided on the second safety door (7).

8. The grinding machine suitable for grinding workpieces with different diameters according to claim 1, characterized in that: Air inlet slots (12) are provided on both side outer walls of the protective cover body (1), a transparent safety door (2) is provided on the front end wall of the protective cover body (1), and a first safety lock (3) is provided on the transparent safety door (2).

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