A device for polishing an inner circumferential surface

Abstract

This application belongs to the field of workpiece processing, specifically an inner circumferential surface grinding device, including a grinding mechanism, a cylindrical workpiece rotation mechanism, and a cylindrical workpiece fixing mechanism. The cylindrical workpiece rotation mechanism is located on the lower side within the stroke range of the grinding mechanism, and there is a preset distance between the cylindrical workpiece rotation mechanism and the grinding mechanism. The cylindrical workpiece fixing mechanism is located above the cylindrical workpiece rotation mechanism, and there is a preset distance between the cylindrical workpiece fixing mechanism and the cylindrical workpiece rotation mechanism. The grinding mechanism includes a motor, a left support plate, a right support plate, a rotating rod, a mounting wheel, a grinding wheel, an electric push rod, and a right-side support assembly. This application uses a rotating rod and a mounting wheel to support the inner side of the grinding wheel, and the left support plate, right support plate, left support plate, and right support plate limit the height of the fixing component, thereby ensuring that the supporting component supporting the grinding block will not bend during the grinding process, achieving a stable grinding effect.

Description

Technical Field

[0001] This application relates to the field of workpiece processing, specifically to an internal circumferential surface grinding device. Background Technology

[0002] Cylindrical workpieces refer to parts that are hollow cylindrical in shape, with an internal cavity and a regular cylindrical surface on the outside.

[0003] Many cylindrical workpieces need to be installed in conjunction with other components, such as the fit between a shaft and a sleeve. If burrs or flash are generated on the cylindrical workpiece during the production process, it can easily make it difficult to fit with other workpieces.

[0004] Currently, grinding the inner circumferential surface of cylindrical workpieces often requires the cooperation of a drive component that rotates the grinding wheel and another that moves the grinding wheel back and forth. This allows the grinding wheel to move during rotation, achieving the effect of grinding the inner circumferential surface of the cylindrical workpiece to different depths. However, when grinding long cylindrical workpieces, the drive component often has difficulty entering the interior of the workpiece. When using a rotating rod to extend the rotating grinding wheel into the workpiece, the rod is prone to bending under gravity when it is long, thus affecting the grinding effect. Therefore, it is necessary to design an inner circumferential surface grinding device to solve the above problems. Utility Model Content

[0005] The purpose of this application is to address the shortcomings of existing technologies by designing an inner circumferential surface grinding device that supports the grinding wheel internally and fixes the grinding wheel to the support components on the left and right sides, thereby solving the problem of the support rod easily bending during the grinding process.

[0006] To achieve the above objectives, the following technical solution is adopted: An inner circumferential surface grinding device includes a grinding mechanism, a cylindrical workpiece rotating mechanism, and a cylindrical workpiece fixing mechanism. The cylindrical workpiece rotating mechanism is located on the lower side within the stroke range of the grinding mechanism, and there is a preset distance between the cylindrical workpiece rotating mechanism and the grinding mechanism. The cylindrical workpiece fixing mechanism is located above the cylindrical workpiece rotating mechanism, and there is a preset distance between the cylindrical workpiece fixing mechanism and the cylindrical workpiece rotating mechanism.

[0007] Preferably, the grinding mechanism includes a motor, a left support plate, a right support plate, a rotating rod, a mounting wheel, a grinding wheel, an electric push rod, and a right-side support assembly. The output shaft of the motor is fixedly connected to the left end of the left support plate, the right end of the left support plate is fixedly connected to the left end of the rotating rod, the right end of the rotating rod is fixedly connected to the left end of the right support plate, the right side of the left support plate is fixedly connected to the left side of the electric push rod, the output end of the electric push rod is fixedly connected to the left end of the mounting wheel, the outer circumferential surface of the mounting wheel is fixedly connected to the inner circumferential surface of the grinding wheel, and the right-side support assembly is inserted into the right support plate.

[0008] Preferably, a mounting base is provided below the motor, and a protrusion is provided on the upper surface of the mounting base. The upper surface of the protrusion is fixedly connected to the lower side of the motor. A left support plate is fixedly connected to the upper surface of the mounting base. The inner wall of the left support plate is through and rotatably connected to the outer wall of the left support plate.

[0009] Preferably, the right-side support assembly includes a right support plate, a support groove, a sliding groove, a locking block, a spring, and a control rod. The right support plate has a support groove on its left side, and the right support piece is inserted into the support groove. The sliding groove is formed on the inner wall of the right support plate. The locking block is slidably connected to the inner wall of the sliding groove. The right surface of the locking block is fixedly connected to the left end of the control rod. The outer wall of the control rod passes through and is slidably connected to the inner wall of the right support plate. The upper side of the locking block is elastically connected to the inner wall of the sliding groove by a spring. The upper surface of the mounting base has a moving groove. The lower part of the right support plate has a protrusion that slides in the moving groove. The inner wall of the mounting base below the moving groove has a locking groove.

[0010] Preferably, the cylindrical workpiece rotating mechanism includes a mounting frame, a rotating roller, a sprocket, a chain, and a second motor. The lower surface of the mounting frame is fixedly connected to the upper surface of the mounting base. The inner wall of the mounting frame is rotatably connected to the rotating shaft of the rotating roller. A sprocket is fixedly connected to the rotating shaft of the rotating roller. A chain is provided on the outside of the sprocket, and the sprocket and the chain are externally meshed. The inner wall of the mounting frame is fixedly connected to the outer wall of the second motor. The output shaft of the second motor is fixedly connected to the rotating shaft of the front rotating roller.

[0011] Preferably, the cylindrical workpiece fixing mechanism includes a bracket, a cylinder, a movable frame, and a rotating wheel. The cylinder is fixedly connected to the lower surface of the bracket, the output shaft of the cylinder is fixedly connected to the upper side of the movable frame, and the inner wall of the movable frame is rotatably connected to the rotating shaft of the rotating wheel.

[0012] Preferably, the movable groove is L-shaped, and the lower width of the movable groove is wider than the upper width.

[0013] Preferably, the lower edge of the card block is rounded, and the width of the card block is narrower than the width of the card slot.

[0014] Compared with the prior art, the beneficial effects of this application are: 1. This application uses a rotating rod and mounting wheel to support the inner side of the grinding wheel, and limits the height of the fixing part by the left support plate, right support plate, left support plate and right support plate, so as to ensure that the supporting part of the grinding block will not bend during the grinding process, and achieve a stable grinding effect.

[0015] 2. This application uses a right support plate, sliding groove, locking block, spring, and control rod to enable the right support plate to separate from the right support piece, thereby ensuring that the cylindrical workpiece being processed can be smoothly installed in the grinding area. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the cylindrical workpiece after placement. Figure 2 This is a schematic diagram of the structure in this application; Figure 3 This is a schematic diagram of a portion of the grinding mechanism in this application; Figure 4 This is a cross-sectional schematic diagram of the cylindrical workpiece rotation mechanism and the cylindrical workpiece fixing mechanism in this application; Figure 5 This is a cross-sectional schematic diagram of part of the grinding mechanism and the right-side support component in this application.

[0017] The components include: 1. Grinding mechanism; 2. Cylindrical workpiece rotation mechanism; 3. Cylindrical workpiece fixing mechanism; 4. Mounting base; 11. Motor 1; 12. Left support plate; 13. Right support plate; 14. Rotating rod; 15. Mounting wheel; 16. Grinding wheel; 17. Electric push rod; 18. Right side support assembly; 19. Left support plate; 181. Right support plate; 182. Support groove; 183. Sliding groove; 184. Locking block; 185. Spring; 186. Control rod; 187. Moving groove; 188. Locking groove; 21. Mounting frame; 22. Rotating roller; 23. Sprocket; 24. Chain; 25. Motor 2; 31. Bracket; 32. Cylinder; 33. Moving frame; 34. Rotating wheel. Detailed Implementation

[0018] Reference Figures 1-5A grinding device for inner circumferential surfaces includes a grinding mechanism 1, a cylindrical workpiece rotation mechanism 2, and a cylindrical workpiece fixing mechanism 3. The grinding mechanism 1 is used to grind the inner circumferential surface of the cylindrical workpiece. The cylindrical workpiece rotation mechanism 2 is located on the lower side within the stroke range of the grinding mechanism 1 and is used to drive the cylindrical workpiece to rotate during the grinding process. A preset distance is maintained between the cylindrical workpiece rotation mechanism 2 and the grinding mechanism 1. The cylindrical workpiece fixing mechanism 3 is located above the cylindrical workpiece rotation mechanism 2 and is used to cooperate with the cylindrical workpiece rotation mechanism 2 to fix the cylindrical workpiece. A preset distance is maintained between the cylindrical workpiece fixing mechanism 3 and the cylindrical workpiece rotation mechanism 2.

[0019] In this embodiment, when in use, the operator first passes the cylindrical workpiece to be polished through the polishing area of ​​the polishing mechanism 1 and places its lower surface above the cylindrical workpiece rotating mechanism 2. Then, the cylindrical workpiece is fixed by the cylindrical workpiece fixing mechanism 3. After the fixing is completed, the cylindrical workpiece rotating mechanism 2 and the polishing mechanism 1 are started, so that the inside of the cylindrical workpiece is polished by the polishing mechanism 1 during the rotation process.

[0020] In a preferred embodiment, the grinding mechanism 1 includes a motor 11, a left support plate 12, a right support plate 13, a rotating rod 14, a mounting wheel 15, a grinding wheel 16, an electric push rod 17, and a right-side support assembly 18. The output shaft of the motor 11 is fixedly connected to the left end of the left support plate 12, and the output shaft of the motor 11 is coaxial with the left support plate 12. The right end of the left support plate 12 is fixedly connected to the left end of the rotating rod 14. Multiple rotating rods 14 are arranged in a circular array around the axis of the left support plate 12. The right end of the rotating rod 14 is fixedly connected to the left end of the right support plate 13. The right side of the left support plate 12 is fixedly connected to the left side of the electric push rod 17. The output end of the electric push rod 17 is fixedly connected to the left end of the mounting wheel 15, and the mounting wheel 15 is coaxial with the left support plate 12. The output shaft of the electric push rod 17 is coaxial with the mounting wheel 15. The outer circumferential surface of the mounting wheel 15 is fixedly connected to the inner circumferential surface of the grinding wheel 16. The right-side support assembly... The right support assembly 18 is inserted into the right support plate 13. First, the right support assembly 18 is moved to the right, and then moved backward, so that the right side of the right support plate 13 is in a suspended state. At this time, the operator can pass the cylindrical workpiece through the right support plate 13 and place it above the cylindrical workpiece fixing mechanism 3. After placement, the right support assembly 18 is moved back to its original position to support the right support plate 13, thereby ensuring that the mounting wheel 15 remains stable as it moves left and right along the axis of the left support plate 12. During use, the motor 11 drives the left support plate 12 to rotate, which in turn drives the rotating rod 14 to rotate around the axis of the left support plate 12. This causes the rotating rod 14 to drive the mounting wheel 15 to rotate, thus enabling the grinding wheel 16 to rotate. During the use of the equipment, the mounting wheel 15 can also be pushed by the electric push rod 17, which allows the mounting wheel 15 to drive the grinding wheel 16 to move left and right, achieving the effect of grinding the inner wall of the cylindrical workpiece at different positions.

[0021] As a preferred embodiment, a mounting base 4 is provided below the motor 11. A protrusion is provided on the upper surface of the mounting base 4. The upper surface of the protrusion is fixedly connected to the lower side of the motor 11. By setting the protrusion, the output shaft of the motor 11 can be installed in a position coaxial with the left support plate 12. A left support plate 19 is fixedly connected to the upper surface of the mounting base 4. The left support plate 19 is used to support the left support plate 12, so that the left support plate 12 is not easy to fall due to gravity. The inner wall of the left support plate 19 is through and rotatably connected to the outer wall of the left support plate 12.

[0022] In a preferred embodiment, the right-side support assembly 18 includes a right support plate 181, a support groove 182 (the support groove 182 is circular and has a smooth inner wall), a sliding groove 183, a locking block 184, a spring 185, and a control rod 186. The support groove 182 is located on the left side of the right support plate 181. A right support piece 13 is inserted into the support groove 182. The surface of the right support piece 13 is smooth, allowing it to rotate relative to the support groove 182 after entering it. The sliding groove 183 is located on the inner wall of the right support plate 181. The locking block 184 is slidably connected to the inner wall of the sliding groove 183, and its sliding direction relative to the sliding groove 183 is up and down. The right surface of the locking block 184 is fixedly connected to the left end of the control rod 186. The outer wall of the control rod 186 penetrates the inner wall of the right support plate 181 and is slidably connected to it. The upper side of the locking block 184 is connected to the inner wall of the sliding groove 183 via a spring. Spring 185 provides elastic connection. One end of spring 185 is fixedly connected to the upper side of the locking block 184, and the other end of spring 185 is fixedly connected to the inner wall of the sliding groove 183. The upper surface of the mounting base 4 is provided with a moving groove 187. The lower part of the right support plate 181 is provided with a protrusion that slides in the moving groove 187. The inner wall of the mounting base 4 below the moving groove 187 is provided with a locking groove 188. When the right support plate 181 needs to be moved, the operator first pulls the control rod 186 upward, so that when the control rod 186 moves upward, it drives the locking block 184 to move upward. Therefore, at this time, the locking block 184 leaves the locking groove 188. At this time, the operator can move the right support plate 181 along the moving groove 187. After the cylindrical workpiece is placed, the right support plate 181 is moved again to reset it. When it is moved to this position, the locking block 184 returns to the locking groove 188 under the elastic force of spring 185. Therefore, the right support plate 181 remains stable in the left and right directions.

[0023] As a preferred embodiment, the cylindrical workpiece rotating mechanism 2 includes a mounting frame 21, rotating rollers 22, a sprocket 23, a chain 24, and a motor 25. The lower surface of the mounting frame 21 is fixedly connected to the upper surface of the mounting base 4. The inner wall of the mounting frame 21 is rotatably connected to the shaft of the rotating roller 22. Both ends of the shaft of the rear rotating roller 22 are rotatably connected to the inner wall of the mounting frame 21, while only the left side of the shaft of the front rotating roller 22 is rotatably connected to the inner wall of the mounting frame 21. The shaft of the rotating roller 22 is fixedly connected to the sprocket 23, and a chain 24 is provided on the outside of the sprocket 23. The sprocket 23 and the chain 24 are externally meshed. Through the setting of the sprocket 23, the two rotating rollers 22 can rotate at the same speed and in the same direction. The inner wall of the mounting frame 21 is rotatably connected to the motor 25. The outer wall of motor 25 is fixedly connected, and the output shaft of motor 25 is fixedly connected to the rotating shaft of the front rotating roller 22. When the cylindrical workpiece is clamped by the rotating roller 22 and the cylindrical workpiece fixing mechanism 3, motor 25 rotates, driving the rotating shaft of the front rotating roller 22 to rotate, thereby causing the front rotating roller 22 to rotate. At the same time as the rotating roller 22 rotates, it also drives the sprocket 23 connected to the rotating roller 22 to rotate, thereby causing the chain 24 to move, thus driving the rear sprocket 23 to rotate, thereby causing the rear rotating roller 22 to rotate synchronously with it. Since the cylindrical workpiece is under pressure at this time, its outer wall is in contact with the outer wall of the rotating roller 22. Therefore, when the rotating roller 22 rotates, it can drive the cylindrical workpiece to rotate synchronously with it through friction.

[0024] As a preferred embodiment, the cylindrical workpiece fixing mechanism 3 includes a bracket 31, a cylinder 32, a movable frame 33, and a rotating wheel 34. The cylinder 32 is fixedly connected to the lower surface of the bracket 31, and the output shaft of the cylinder 32 is fixedly connected to the upper side of the movable frame 33. The inner wall of the movable frame 33 is rotatably connected to the rotating shaft of the rotating wheel 34. When the cylindrical workpiece is installed, the cylinder 32 is activated. At this time, the cylinder 32 drives the movable frame 33 and the rotating wheel 34 to move downward. Since the bottom of the cylindrical workpiece is in contact with the two rotating rollers 22, it can be clamped between the rotating rollers 22 and the rotating wheel 34 after being subjected to force above.

[0025] As a preferred method, the moving groove 187 is L-shaped, with the lower width of the moving groove 187 being wider than the upper width. By setting the shape of the moving groove 187, it is ensured that the right support plate 181 can be moved to a position that does not contact the right support piece 13 and does not affect the loading and unloading of the cylindrical workpiece. By setting the shape, it is ensured that the right support plate 181 will not fall off the mounting base 4.

[0026] As a preferred method, the lower edge of the card block 184 is rounded. By setting the rounded corner, the card block 184 can be more easily inserted into the card slot 188. The width of the card block 184 is narrower than the width of the card slot 188. By comparing the widths, it is ensured that the card block 184 can be fully inserted into the card slot 188.

Claims

1. An inner circumferential surface polishing device characterized by comprising: It includes a grinding mechanism (1), a cylindrical workpiece rotation mechanism (2) and a cylindrical workpiece fixing mechanism (3). The cylindrical workpiece rotation mechanism (2) is located on the lower side within the stroke range of the grinding mechanism (1), and there is a preset distance between the cylindrical workpiece rotation mechanism (2) and the grinding mechanism (1). The cylindrical workpiece fixing mechanism (3) is located above the cylindrical workpiece rotation mechanism (2), and there is a preset distance between the cylindrical workpiece fixing mechanism (3) and the cylindrical workpiece rotation mechanism (2).

2. A device for polishing the inner circumferential surface of a pipe according to claim 1, wherein The grinding mechanism (1) includes a motor (11), a left support plate (12), a right support plate (13), a rotating rod (14), a mounting wheel (15), a grinding wheel (16), an electric push rod (17), and a right support assembly (18). The output shaft of the motor (11) is fixedly connected to the left end of the left support plate (12). The right end of the left support plate (12) is fixedly connected to the left end of the rotating rod (14). The right end of the rotating rod (14) is fixedly connected to the left end of the right support plate (13). The right side of the left support plate (12) is fixedly connected to the left side of the electric push rod (17). The output end of the electric push rod (17) is fixedly connected to the left end of the mounting wheel (15). The outer circumferential surface of the mounting wheel (15) is fixedly connected to the inner circumferential surface of the grinding wheel (16). The right support assembly (18) is inserted into the right support plate (13).

3. An internal circumference polishing device according to claim 2, wherein A mounting base (4) is provided below the motor (11). A protrusion is provided on the upper surface of the mounting base (4). The upper surface of the protrusion is fixedly connected to the lower side of the motor (11). A left support plate (19) is fixedly connected to the upper surface of the mounting base (4). The inner wall of the left support plate (19) is through and rotatably connected to the outer wall of the left support piece (12).

4. An internal circumference polishing device according to claim 3, wherein The right-side support assembly (18) includes a right support plate (181), a support groove (182), a sliding groove (183), a locking block (184), a spring (185), and a control rod (186). The right support plate (181) has a support groove (182) on its left side. The right support piece (13) is inserted into the support groove (182). The sliding groove (183) is formed on the inner wall of the right support plate (181). The locking block (184) is slidably connected to the inner wall of the sliding groove (183). The right surface of the locking block (184) is... The control rod (186) is fixedly connected to the left end of the control rod (186). The outer wall of the control rod (186) is slidably connected to the inner wall of the right support plate (181). The upper side of the locking block (184) is elastically connected to the inner wall of the sliding groove (183) by a spring (185). The upper surface of the mounting base (4) is provided with a moving groove (187). The lower part of the right support plate (181) is provided with a protrusion that slides in the moving groove (187). The inner wall of the mounting base (4) below the moving groove (187) is provided with a locking groove (188).

5. The inner circumferential surface polishing apparatus according to claim 1, wherein The cylindrical workpiece rotating mechanism (2) includes a mounting frame (21), a rotating roller (22), a sprocket (23), a chain (24), and a second motor (25). The lower surface of the mounting frame (21) is fixedly connected to the upper surface of the mounting base (4). The inner wall of the mounting frame (21) is rotatably connected to the rotating shaft of the rotating roller (22). The rotating shaft of the rotating roller (22) is fixedly connected to the sprocket (23). The sprocket (23) is provided with a chain (24) on its outside. The sprocket (23) and the chain (24) are externally meshed. The inner wall of the mounting frame (21) is fixedly connected to the outer wall of the second motor (25). The output shaft of the second motor (25) is fixedly connected to the rotating shaft of the front rotating roller (22).

6. The inner circumferential surface grinding device according to claim 1, characterized in that, The cylindrical workpiece fixing mechanism (3) includes a bracket (31), a cylinder (32), a movable frame (33) and a rotating wheel (34). The lower surface of the bracket (31) is fixedly connected to the cylinder (32). The output shaft of the cylinder (32) is fixedly connected to the upper side of the movable frame (33). The inner wall of the movable frame (33) is rotatably connected to the rotating shaft of the rotating wheel (34).

7. An internal circumference polishing device according to claim 4, wherein The movable groove (187) is L-shaped, and the lower width of the movable groove (187) is wider than the upper width.

8. An internal circumference polishing device according to claim 4, wherein The lower edge of the card block (184) is rounded, and the width of the card block (184) is narrower than the width of the card slot (188).

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