A machining and grinding device and grinding method for automobile cylinder sleeve

Abstract

The invention discloses a processing and grinding device and a grinding method for automobile cylinder sleeves, comprising a base, a grinding mechanism and a clamping mechanism, wherein the clamping mechanism comprises a movable backing plate, a threaded adjustment rod, a T-shaped adjustment block, an upper clamping plate and a lower clamping plate, and the grinding mechanism comprises a supporting column, an adjustment rod, a first bevel gear, a second bevel gear, a threaded column, a mounting seat and a driving motor, a rectangular through hole penetrating the upper and lower side walls of the base is provided at the middle section of the front side of the top end face of the base, the supporting column of the grinding mechanism is slidably inserted in the inner cavity of the rectangular through hole, an inverted T-shaped slide groove located at the rear side of the rectangular through hole is provided at the middle section of the rear side of the top end face of the base, an inverted T-shaped slide block is provided at the middle section of the bottom end face of the movable backing plate of the clamping mechanism, and the inverted T-shaped slide block is slidably engaged with the inner cavity of the inverted T-shaped slide groove. The invention is convenient for clamping the automobile cylinder sleeve and automatically feeding the grinding operation to the inner wall thereof, so that the final grinding roughness is low, meeting the grinding requirements.

Description

Technical Field

[0001] The invention relates to the technical field related to machining and grinding of automobile cylinder liners, and in particular to a machining and grinding device and a grinding method for automobile cylinder liners. Background Art

[0002] Cylinder liner is the abbreviation of cylinder liner, which is embedded in the cylinder barrel of the cylinder body and forms a combustion chamber together with the piston and cylinder head. Cylinder liner is divided into two categories: dry cylinder liner and wet cylinder liner. The cylinder liner whose back does not contact the cooling water is called dry cylinder liner, and the cylinder liner whose back contacts the cooling water is wet cylinder liner. Dry cylinder liner is thinner, simpler in structure and easier to process. Wet cylinder liner directly contacts the cooling water, so it is beneficial to the cooling of the engine and the compactness and lightness of the engine.

[0003] The existing cylinder liner needs to be ground on the inner wall of the cylinder liner before welding the cylinder bottom. During the grinding process, the grinding is achieved by contact, extrusion and friction between the grinding rod and the inner wall of the cylinder liner. However, the grinding particles on the surface of the grinding rod do not change position relative to the cylinder liner when the cylinder liner rotates. In this way, the inner wall of the cylinder liner after grinding is enlarged to form an annular groove with high roughness, which affects the normal and long-term use of the cylinder liner. Therefore, a processing and grinding device and a grinding method for automobile cylinder liner are designed and produced here to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a processing and grinding device and a grinding method for automobile cylinder liners, which are convenient for clamping the automobile cylinder liners to prevent the automobile cylinder liners from shaking during the grinding process, and automatically feed the inner wall thereof for grinding operation, so that the final grinding roughness is low and meets the grinding requirements.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A processing and grinding device for automobile cylinder sleeves comprises a base, a grinding mechanism and a clamping mechanism, wherein the clamping mechanism comprises a movable backing plate, a threaded adjustment rod, a T-shaped adjustment block, an upper clamping plate and a lower clamping plate, and the grinding mechanism comprises a supporting column, an adjusting rod, a first bevel gear, a second bevel gear, a threaded column, a mounting seat and a driving motor. A rectangular through hole penetrating the upper and lower side walls of the base is provided in the middle section of the front side of the top end surface of the base, and the supporting column of the grinding mechanism is slidably inserted in the inner cavity of the rectangular through hole, and an inverted T-shaped groove located at the rear side of the rectangular through hole is provided in the middle section of the rear side of the top end surface of the base, and an inverted T-shaped slider is provided in the middle section of the bottom end surface of the movable backing plate of the clamping mechanism, and the inverted T-shaped slider is slidably engaged with the inner cavity of the inverted T-shaped groove.

[0007] In a further embodiment, support legs are vertically provided at four corners of the bottom end surface of the base.

[0008] In a further embodiment, a plurality of steel balls are embedded in the bottom end surface of the inverted T-shaped sliding block and are in rolling contact with the bottom end surface of the inner cavity of the inverted T-shaped sliding groove.

[0009] In a further embodiment, the front end surface of the movable support plate is provided with a vertically distributed T-shaped adjustment groove, the T-shaped adjustment block is slidably engaged in the inner cavity of the T-shaped adjustment groove, the rear end surface of the upper clamp plate is connected to the front end surface of the T-shaped adjustment block, the lower clamp plate is located directly below the upper clamp plate, and the rear end surface of the lower clamp plate is fixedly connected to the bottom end of the front end surface of the movable support plate, the threaded adjustment rod rotates through the upper end surface of the movable support plate, and is rotatably connected to the center position of the bottom end surface of the inner cavity of the T-shaped adjustment groove, and the T-shaped adjustment block is provided with a threaded hole, and is rotatably connected to the threaded adjustment rod through the threaded hole.

[0010] In a further embodiment, a placement groove is provided on the front side of the inner cavity of the rectangular through hole of the base, the adjusting rod rotates through the front end face of the base and extends to the inner cavity of the placement groove, the first bevel gear is located in the inner cavity of the placement groove and is fixedly plugged with the tip of the adjusting rod, a rotating rod is rotatably plugged between the upper and lower side walls of the inner cavity of the placement groove, the second bevel gear is located on the upper end face of the threaded column and is fixedly sleeved with the rotating rod, the second bevel gear and the first bevel gear are perpendicular to each other and rotatably engage with each other, a threaded transmission groove is provided in the vertical direction on the front end face of the supporting column, the radial side wall of the threaded column extends to the inner cavity of the rectangular through hole and rotatably fits with the inner cavity of the threaded transmission groove of the supporting column.

[0011] In a further embodiment, the mounting seat is fixedly mounted on the top end surface of the supporting column, the driving motor is fixedly mounted on the upper end surface of the mounting seat, the driving motor is connected to a transmission roller through a power shaft, and the radial side wall of the transmission roller is symmetrically provided with two hinge grooves, and the side wall of the inner cavity of each hinge groove is hinged with two hinge rods on the side away from the opening, and an arc plate is hinged between the tips of the two hinge rods, and the outer wall of each arc plate is provided with a plurality of rectangular buffer grooves evenly spaced front and back, and the side wall of the inner cavity of each rectangular buffer groove close to the driving motor has a stainless steel arc spring sheet extending toward one side of the opening, and the tip of the stainless steel arc spring sheet in the inner cavity of the rectangular buffer groove at the rear end of each arc plate is provided with an arc thread transmission rubber block, and the tips of the stainless steel arc spring sheets in the inner cavities of several rectangular buffer grooves of each arc plate away from the arc thread transmission rubber block are connected with an arc grinding block.

[0012] In a further embodiment, the main cross-sections of the upper and lower clamping plates are both one-sixth circular arc structures, and the opposite side walls of the upper and lower clamping plates are provided with rubber pads.

[0013] Preferably, the grinding method based on the above-mentioned automobile cylinder liner processing and grinding device comprises the following steps:

[0014] A1. Place the automobile cylinder liner to be ground between the upper clamping plate and the lower clamping plate, and ensure that the opening of the cylinder liner faces the grinding mechanism. Then, manually rotate the threaded adjustment rod so that the threaded adjustment rod rotates on the bottom end surface of the inner cavity of the T-shaped adjustment groove. As the threaded adjustment rod rotates, the T-shaped adjustment block can be adjusted downward along the inner cavity of the T-shaped adjustment groove, and the upper clamping plate can be adjusted downward until the automobile cylinder liner is clamped between the upper clamping plate and the lower clamping plate.

[0015] A2. The axial height of the drive roller of the grinding mechanism is adjusted according to the axial center position of the cylinder sleeve to facilitate the insertion into the inner cavity of the cylinder sleeve for grinding operation, that is, by manually rotating the adjustment rod, the first bevel gear is driven to rotate through the adjustment rod, and the second bevel gear is driven to rotate. Here, the second bevel gear is located on the upper end surface of the threaded column and is fixedly sleeved with the rotating rod. Therefore, the rotation of the second bevel gear can drive the rotating rod and the threaded column to rotate synchronously. Here, the radial side wall of the threaded column extends to the inner cavity of the rectangular through hole and rotates and fits with the inner cavity of the threaded transmission groove of the support column. Therefore, the support column can be driven to adjust up and down along the inner cavity of the rectangular through hole until the center axis of the adjusted drive roller coincides with the center axis of the cylinder sleeve.

[0016] A3. Then start the driving motor, and use the driving motor to drive the transmission roller to rotate synchronously. The radial side wall of the transmission roller is pushed away from each other by the arc plate hinged by the hinge rod due to the centrifugal force, so that the arc grinding block on the outer wall of the arc plate can rotate and fit with the inner wall of the cylinder sleeve to achieve the grinding operation. In addition, the arc thread transmission rubber block can realize axial transmission operation by using the external thread and the inner wall of the cylinder sleeve while rotating, that is, drive the moving support plate of the clamping mechanism to slide to one side of the grinding mechanism, and then the moving support plate uses the inverted T-shaped slider to slide freely along the inner cavity of the inverted T-shaped slide groove to achieve axial all-round grinding operation on the inner wall of the cylinder sleeve, so that the final grinding roughness is low, which meets the grinding requirements.

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

[0018] 1. The present invention facilitates clamping of automobile cylinder liners and automatically feeds the inner wall thereof for grinding operation, so that the final grinding roughness is low and meets the grinding requirements.

[0019] 2. The present invention provides rubber pads on the opposite side walls of the upper clamping plate and the lower clamping plate, thereby increasing the friction between the upper clamping plate and the outer wall of the automobile cylinder liner and preventing the automobile cylinder liner from shaking during the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 For the present invention Figure 1A magnified view of the structure at center;

[0022] Figure 3 It is a partial cross-sectional view of the grinding mechanism of the present invention.

[0023] In the figure: 1. base; 11. supporting leg; 12. inverted T-shaped slide; 2. clamping mechanism; 21. movable support plate; 22. T-shaped adjustment groove; 23. T-shaped adjustment block; 24. rubber pad; 25. lower clamping plate; 26. upper clamping plate; 27. threaded adjustment rod; 3. grinding mechanism; 31. supporting column; 32. mounting seat; 33. driving motor; 34. transmission roller; 35. threaded transmission groove; 36. adjustment rod; 37. hinge groove; 38. hinge rod; 39. arc plate; 310. rectangular buffer groove; 311. stainless steel arc spring piece; 312. arc-shaped thread transmission rubber block; 313. arc-shaped grinding block; 314. first bevel gear; 315. rotating rod; 316. second bevel gear; 317. threaded column. DETAILED DESCRIPTION

[0024] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0025] Embodiment 1

[0026] See also Figure 1-3 The present embodiment provides a processing and grinding device and a grinding method for a cylinder sleeve of an automobile, comprising a base 1, a grinding mechanism 3 and a clamping mechanism 2, wherein the clamping mechanism 2 comprises a movable support plate 21, a threaded adjustment rod 27, a T-shaped adjustment block 23, an upper clamping plate 26 and a lower clamping plate 25, the grinding mechanism 3 comprises a supporting column 31, an adjusting rod 36, a first bevel gear 314, a second bevel gear 316, a threaded column 317, a mounting seat 32 and a driving motor 33, a rectangular through hole penetrating the upper and lower side walls of the base 1 is provided at the middle section of the front side of the top end of the base 1, the supporting column 31 of the grinding mechanism 3 is slidably inserted in the inner cavity of the rectangular through hole, an inverted T-shaped slide groove 12 located at the rear side of the rectangular through hole is provided at the middle section of the rear side of the top end of the base 1, an inverted T-shaped slide groove 12 is provided at the middle section of the bottom end surface of the movable support plate 21 of the clamping mechanism 2, and the inverted T-shaped slide groove is slidably engaged with the inner cavity of the inverted T-shaped slide groove 12.

[0027] Support legs 11 are vertically disposed at the four corners of the bottom end surface of the base 1 to support the entire structure.

[0028] The front end surface of the movable support plate 21 is provided with a vertically distributed T-shaped adjustment groove 22, and the T-shaped adjustment block 23 is slidably engaged in the inner cavity of the T-shaped adjustment groove 22. The rear end surface of the upper clamp plate 26 is connected to the front end surface of the T-shaped adjustment block 23. The lower clamp plate 25 is located directly below the upper clamp plate 26, and the rear end surface of the lower clamp plate 25 is fixedly connected to the bottom end of the front end surface of the movable support plate 21. The threaded adjustment rod 27 rotates through the upper end surface of the movable support plate 21, and is rotatably connected with the center position of the bottom end surface of the inner cavity of the T-shaped adjustment groove 22. The T-shaped adjustment block 23 is provided with a threaded hole, and is rotatably connected with the threaded adjustment rod 27 through the threaded hole.

[0029] A placement groove is provided on the front side of the inner cavity of the rectangular through hole of the base 1, and the adjusting rod 36 rotates to penetrate the front end surface of the base 1 and extends to the inner cavity of the placement groove. The first bevel gear 314 is located in the inner cavity of the placement groove and is fixedly plugged with the tip of the adjusting rod 36. A rotating rod 315 is rotatably plugged between the upper and lower side walls of the inner cavity of the placement groove. The second bevel gear 316 is located on the upper end surface of the threaded column 317 and is fixedly sleeved with the rotating rod 315. The second bevel gear 316 and the first bevel gear 314 are perpendicular to each other and rotatably engage with each other. A threaded transmission groove 35 is provided in the vertical direction on the front end surface of the supporting column 31. The radial side wall of the threaded column 317 extends to the inner cavity of the rectangular through hole and is rotatably fitted with the inner cavity of the threaded transmission groove 35 of the supporting column 31.

[0030] The mounting seat 32 is fixedly mounted on the top surface of the supporting column 31, and the driving motor 33 is fixedly mounted on the upper end surface of the mounting seat 32. The driving motor 33 is connected to the transmission roller 34 through a power shaft. The radial side wall of the transmission roller 34 is symmetrically provided with two hinge grooves 37. The side wall of the inner cavity of each hinge groove 37 away from the opening is hinged with two hinge rods 38, and the tips of the two hinge rods 38 are hinged with an arc plate 39. The outer wall of each arc plate 39 is provided with a plurality of rectangular buffers evenly spaced front and back. The punching groove 310, the side wall of the inner cavity of each rectangular buffer groove 310 close to the driving motor 33 is extended toward the side of the opening with a stainless steel arc spring piece 311, the tip of the stainless steel arc spring piece 311 in the inner cavity of the rectangular buffer groove 310 at the rear end of each arc plate 39 is provided with an arc-shaped threaded transmission rubber block 312, and the tips of the stainless steel arc spring pieces 311 in the inner cavities of several rectangular buffer grooves 310 of each arc plate 39 away from the arc-shaped threaded transmission rubber block 312 are connected with an arc-shaped grinding block 313.

[0031] In this embodiment, the automobile cylinder liner to be ground is placed between the upper clamping plate 26 and the lower clamping plate 25, and the opening of the cylinder liner is ensured to face the side of the grinding mechanism 3. Then, the threaded adjustment rod 27 is manually rotated so that the threaded adjustment rod 27 rotates on the bottom end surface of the inner cavity of the T-shaped adjustment groove 22. As the threaded adjustment rod 27 rotates, the T-shaped adjustment block 23 can be driven to adjust downward along the inner cavity of the T-shaped adjustment groove 22, and the upper clamping plate 26 can be driven to adjust downward until the automobile cylinder liner is clamped between the upper clamping plate 26 and the lower clamping plate 25. The axial center position of the sleeve is used to adjust the axial height of the driving roller 34 of the grinding mechanism 3 to facilitate the insertion into the inner cavity of the cylinder sleeve for grinding operation, that is, by manually rotating the adjusting rod 36, the first bevel gear 314 is driven to rotate by the adjusting rod 36, and the second bevel gear 316 can be driven to rotate. Here, the second bevel gear 316 is located on the upper end surface of the threaded column 317, and both are fixedly sleeved with the rotating rod 315, so the rotation of the second bevel gear 316 can drive the rotating rod 315 and the threaded column 317 to rotate synchronously. Here, the threaded column 31 The radial side wall of 7 extends to the inner cavity of the rectangular through hole and is rotatably fitted with the inner cavity of the threaded transmission groove 35 of the support column 31, so that the support column 31 can be driven to adjust up and down along the inner cavity of the rectangular through hole until the center axis of the adjusted transmission roller 34 coincides with the center axis of the cylinder sleeve; then the drive motor 33 is started, and the drive motor 33 is used to drive the transmission roller 34 to rotate synchronously, and the arc plate 39 of the radial side wall of the transmission roller 34 is stretched to the side away from each other by the centrifugal force, so that the arc plate 3 The arc-shaped grinding block 313 on the outer wall can rotate and fit with the inner wall of the cylinder sleeve to realize the grinding operation. In addition, the arc-shaped threaded transmission rubber block 312 can realize the axial transmission operation by using the external thread and the inner wall of the cylinder sleeve while rotating, that is, driving the moving support plate 21 of the clamping mechanism 2 to slide toward the side of the grinding mechanism 3, and the moving support plate 21 uses the inverted T-shaped slider to slide freely along the inner cavity of the inverted T-shaped slide groove 12, so as to realize the axial all-round grinding operation of the inner wall of the cylinder sleeve, so that the final grinding roughness is relatively low, which meets the grinding requirements.

[0032] Embodiment 2

[0033] See also Figure 1-3 , further improvements were made on the basis of Example 1:

[0034] The bottom end surface of the inverted T-shaped slider is embedded with a plurality of steel balls that roll in contact with the bottom end surface of the inner cavity of the inverted T-shaped slot 12. By providing the steel balls that roll in contact with the bottom end surface of the inner cavity of the inverted T-shaped slot 12, the friction of the inverted T-shaped slider when sliding along the inner cavity of the inverted T-shaped slot 12 is reduced.

[0035] The main cross-sections of the upper clamping plate 26 and the lower clamping plate 25 are both one-sixth circular arc structures, which facilitate better clamping and fitting with the outer wall of the automobile cylinder liner. The opposite side walls of the upper clamping plate 26 and the lower clamping plate 25 are provided with rubber pads 24. By providing the rubber pads 24, it is convenient to increase the friction between the outer wall of the automobile cylinder liner and prevent the automobile cylinder liner from shaking during the grinding process.

[0036] 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 machining and grinding device for automobile cylinder liners, comprising a base (1), a grinding mechanism (3) and a clamping mechanism (2), characterized in that: The clamping mechanism (2) comprises a movable support plate (21), a threaded adjustment rod (27), a T-shaped adjustment block (23), an upper clamping plate (26) and a lower clamping plate (25); the grinding mechanism (3) comprises a supporting column (31), an adjustment rod (36), a first bevel gear (314), a second bevel gear (316), a threaded column (317), a mounting seat (32) and a driving motor (33); a rectangular through hole penetrating the upper and lower side walls of the base (1) is provided at the middle section of the front side of the top end of the base (1); the supporting column (31) of the grinding mechanism (3) is slidably inserted into the inner cavity of the rectangular through hole; an inverted T-shaped slide groove (12) located at the rear side of the rectangular through hole is provided at the middle section of the rear side of the top end of the base (1); an inverted T-shaped slide block is provided at the middle section of the bottom end of the movable support plate (21) of the clamping mechanism (2), and the inverted T-shaped slide block is slidably engaged with the inner cavity of the inverted T-shaped slide groove (12); The mounting seat (32) is fixedly mounted on the top end surface of the supporting column (31), the driving motor (33) is fixedly mounted on the upper end surface of the mounting seat (32), the driving motor (33) is connected to a transmission roller (34) via a power shaft, the radial side wall of the transmission roller (34) is symmetrically provided with two hinge grooves (37), the side wall of the inner cavity of each hinge groove (37) away from the opening is hinged with two hinge rods (38), and an arc plate (39) is hinged between the tips of the two hinge rods (38), and the outer wall of each arc plate (39) is provided with a plurality of front and rear evenly spaced A rectangular buffer groove (310), a side wall of an inner cavity of each rectangular buffer groove (310) close to the drive motor (33) has a stainless steel arc spring piece (311) extending toward the side of the opening, a tip of the stainless steel arc spring piece (311) in the inner cavity of the rectangular buffer groove (310) at the rear end of each arc plate (39) is provided with an arc-shaped threaded transmission rubber block (312), and tips of the stainless steel arc spring pieces (311) in the inner cavities of a plurality of rectangular buffer grooves (310) of each arc plate (39) away from the arc-shaped threaded transmission rubber block (312) are connected to an arc-shaped grinding block (313).

2. The automobile cylinder liner processing and grinding device according to claim 1 is characterized in that: Support legs (11) are vertically provided at the four corners of the bottom end surface of the base (1).

3. The automobile cylinder liner processing and grinding device according to claim 1, characterized in that: The bottom end surface of the inverted T-shaped sliding block is embedded with a plurality of steel balls which are rollingly fitted with the bottom end surface of the inner cavity of the inverted T-shaped sliding groove (12).

4. The automobile cylinder liner processing and grinding device according to claim 1, characterized in that: The front end surface of the movable support plate (21) is provided with a vertically distributed T-shaped adjustment groove (22), the T-shaped adjustment block (23) is slidably engaged in the inner cavity of the T-shaped adjustment groove (22), the rear end surface of the upper clamping plate (26) is connected to the front end surface of the T-shaped adjustment block (23), the lower clamping plate (25) is located directly below the upper clamping plate (26), and the rear end surface of the lower clamping plate (25) is fixedly connected to the bottom end of the front end surface of the movable support plate (21), the threaded adjustment rod (27) rotates through the upper end surface of the movable support plate (21), and is rotatably plugged into the center position of the bottom end surface of the inner cavity of the T-shaped adjustment groove (22), and the T-shaped adjustment block (23) is provided with a threaded hole, and is rotatably sleeved with the threaded adjustment rod (27) through the threaded hole.

5. The automobile cylinder liner processing and grinding device according to claim 1, characterized in that: A placement groove is provided at the front side of the inner cavity of the rectangular through hole of the base (1); the adjustment rod (36) rotates through the front end surface of the base (1) and extends to the inner cavity of the placement groove; the first bevel gear (314) is located in the inner cavity of the placement groove and is fixedly plugged with the tip of the adjustment rod (36); a rotation rod (315) is rotationally plugged between the upper and lower side walls of the inner cavity of the placement groove; the second bevel gear (316) is located on the upper end surface of the threaded column (317) and is fixedly sleeved with the rotation rod (315); the second bevel gear (316) and the first bevel gear (314) are perpendicular to each other and are rotationally meshed with each other; a threaded transmission groove (35) is provided in the vertical direction on the front end surface of the support column (31); the radial side wall of the threaded column (317) extends to the inner cavity of the rectangular through hole and is rotationally fitted with the inner cavity of the threaded transmission groove (35) of the support column (31).

6. The automobile cylinder liner processing and grinding device according to claim 1, characterized in that: The main view cross-sections of the upper clamping plate (26) and the lower clamping plate (25) are both one-sixth arc-shaped structures, and the opposite side walls of the upper clamping plate (26) and the lower clamping plate (25) are both provided with rubber pads (24).

7. A grinding method using the automobile cylinder liner grinding device according to claim 1, characterized in that: The steps include: A1. Place the automobile cylinder liner to be ground between the upper clamping plate (26) and the lower clamping plate (25), and ensure that the opening of the cylinder liner faces the side of the grinding mechanism (3). Then, manually rotate the threaded adjustment rod (27) so that the threaded adjustment rod (27) rotates on the bottom end surface of the inner cavity of the T-shaped adjustment groove (22). As the threaded adjustment rod (27) rotates, the T-shaped adjustment block (23) can be adjusted downward along the inner cavity of the T-shaped adjustment groove (22), thereby driving the upper clamping plate (26) to adjust downward until the automobile cylinder liner is clamped between the upper clamping plate (26) and the lower clamping plate (25); A2. The axial height of the drive roller (34) of the grinding mechanism (3) is adjusted according to the axial center position of the cylinder sleeve to facilitate insertion into the inner cavity of the cylinder sleeve for grinding operation, that is, by manually rotating the adjustment rod (36), the first bevel gear (314) is driven to rotate through the adjustment rod (36), and the second bevel gear (316) is driven to rotate. Here, the second bevel gear (316) is located on the upper end surface of the threaded column (317) and is fixedly sleeved with the rotating rod (315). Therefore, the rotation of the second bevel gear (316) can drive the rotating rod (315) and the threaded column (317) to rotate synchronously. Here, the radial side wall of the threaded column (317) extends to the inner cavity of the rectangular through hole and is rotationally fitted with the inner cavity of the threaded transmission groove (35) of the support column (31). Therefore, it is possible to drive the support column (31) to adjust up and down along the inner cavity of the rectangular through hole until the center axis of the adjusted drive roller (34) coincides with the center axis of the cylinder sleeve. A3. Then, the driving motor (33) is started, and the driving motor (33) is used to drive the driving roller (34) to rotate synchronously. The arc plate (39) hinged to the hinge rod (38) on the radial side wall of the driving roller (34) is stretched to the side away from each other by centrifugal force, so that the arc grinding block (313) on the outer wall of the arc plate (39) can rotate and fit with the inner wall of the cylinder sleeve to achieve the grinding operation. In addition, the arc thread transmission rubber block (312) can realize the axial transmission operation by using the outer thread and the inner wall of the cylinder sleeve while rotating, that is, the moving support plate (21) of the clamping mechanism (2) is driven to slide toward the side of the grinding mechanism (3), and the moving support plate (21) can slide freely along the inner cavity of the inverted T-shaped slide groove (12) by using the inverted T-shaped slider, so as to realize the axial all-round grinding operation on the inner wall of the cylinder sleeve, so that the final grinding roughness is low, meeting the grinding requirements.

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