Tubular part polishing equipment and using method thereof

Abstract

The invention relates to the technical field of part machining, and provides tubular part polishing equipment and a using method thereof.The tubular part polishing equipment comprises a base and a rail frame fixed to the base, and the base is provided with a clamping mechanism used for fixing a tubular part and a rotating mechanism driving the clamping mechanism to drive the tubular part to rotate; a fixing frame is suspended above the clamping mechanism; the polishing angle of the polishing mechanism is adjusted in a reciprocating mode through the adjusting and controlling mechanism, so that the end face of a pipe opening and the inner and outer edges of the pipe opening of the tubular part are ground and polished through a second polishing assembly of the polishing mechanism, and the clamping mechanism is driven by the rotating mechanism to drive the tubular part to rotate. Therefore, circumferential polishing of the pipe orifice of the tubular part is completed in cooperation with the polishing mechanism. After the pipe orifice of the tubular part is polished, the polishing of the inner and outer pipe walls of the tubular part can be completed through the work cooperation of the regulation and control mechanism and the lifting air cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of parts processing, and in particular to a tubular parts polishing device and a use method thereof. Background Art

[0002] Polishing methods for tubular parts mainly include mechanical polishing, abrasive flow polishing and magnetic grinding polishing. Mechanical polishing is the most commonly used processing method in polishing because of its low cost and high efficiency. Mechanical polishing uses a grinding disc and mechanical force to remove microscopic unevenness on the surface of tubular parts to reduce surface roughness and obtain the required glossiness.

[0003] However, mechanical polishing is mainly suitable for the processing of the outside of tubular parts. For example, CN216940073U discloses a tubular part outer wall polishing device, including a base, a bracket, a rotating component, a fixed component, a polishing component and a pipe body. The bracket is fixedly connected to the left side of the top of the base, the rotating component is installed on the base, the fixed component is installed above the bracket and corresponds to the position of the rotating component, the polishing component is installed on the side of the bracket, and the pipe body is arranged between the rotating component and the fixed component and corresponds to the position of the polishing component. The rotating component includes a rotating motor and a rotating seat. This polishing equipment can perform all-round polishing on the outer wall of the pipe, but the polishing of the inner wall of the pipe still needs to be processed by abrasive flow polishing and magnetic grinding polishing, which increases the processing cost. Summary of the invention

[0004] The invention provides a tubular component polishing device and a use method thereof, which solves the problem of high processing cost of tubular components in the prior art.

[0005] The technical scheme of the present invention is as follows: a tubular component polishing device, comprising a base and a rail frame fixed on the base, the base is provided with a clamping mechanism for fixing the tubular component and a rotating mechanism for driving the clamping mechanism to drive the tubular component to rotate, a fixed frame is suspended above the clamping mechanism, a polishing mechanism and a dust collector for absorbing waste chips generated during the processing of the polishing mechanism through a guide tube are provided at the bottom of the fixed frame, and a regulating mechanism for adjusting the polishing position and polishing angle of the polishing mechanism and a lifting cylinder for adjusting the polishing height of the polishing mechanism are provided on the rail frame; Preferably, the polishing mechanism includes a shell having an inner and outer double-layer structure, a driving assembly arranged on one side of the shell, a first polishing assembly for polishing the inner and outer walls of the tubular component under the drive of the driving assembly, and a second polishing assembly for polishing the end portion of the tubular component under the synchronous drive of the driving assembly.

[0006] Preferably, the regulating mechanism includes a slide plate, a block slidably connected to the rail frame is fixed on the back of the slide plate, the lifting cylinder is fixed to the rail frame, the outer end of the piston rod of the lifting cylinder is fixedly connected to the slide plate, two upper and lower distributed supports are fixed on the slide plate, the first cylinder is hinged on the support located at a higher position, and the second cylinder is welded and fixed on the support located at a lower position, and the outer ends of the piston rods of the first cylinder and the second cylinder are both hinged to the fixed frame.

[0007] Preferably, the shell includes an outer shell, which is fixed to the lower end of the conduit connected to the vacuum cleaner, and an inner shell is fixed in the outer shell through a plurality of annularly distributed fixing blocks, and a gap is left between the outer shell and the inner shell to form a flow channel for airflow.

[0008] Preferably, the first polishing assembly includes an outer cover, which is rotatably connected to the bottom of the outer shell, the outer cover is conical, and a bevel gear disk is fixed on the outer side of the top, and a first polishing pad is fixed on the bottom of the outer cover.

[0009] Preferably, the drive assembly includes a second motor, which is fixed outside the outer shell, and the output shaft of the second motor transversely penetrates the outer shell and the inner shell and is rotatably connected to the outer shell and the inner shell, and a first bevel gear is fixed to the position where the output shaft of the second motor is located outside the outer shell, and the first bevel gear is meshed with a bevel gear disk, and a second bevel gear is fixed to the position where the output shaft of the second motor is located inside the inner shell.

[0010] Preferably, the second polishing assembly includes a shaft rod, which vertically penetrates the inner shell and is rotatably connected to the inner shell. A third bevel gear is fixed to the position of the shaft rod in the inner shell, and the third bevel gear is meshed with the second bevel gear. A turntable is fixed to the lower end of the shaft rod, and a second polishing pad is fixed to the bottom of the turntable.

[0011] Preferably, the first polishing pad is in a ring shape, the second polishing pad is in a round cake shape, and the bottom surface of the second polishing pad is lower than that of the first polishing pad.

[0012] Preferably, the clamping mechanism comprises a base, the base is rotatably connected to the base, a mechanical clamp is arranged on the top of the base, and a circle of spur gear ring is arranged on the periphery of the bottom of the base.

[0013] Preferably, the rotating mechanism includes a first motor and a reduction gear box, both of which are fixed on a base, an output shaft of the first motor is fixedly connected to an input end of the reduction gear box, and a spur gear meshing with a spur gear ring is fixed to the output end of the reduction gear box.

[0014] A method for using a polishing device comprises the following steps: Step 1: placing the tubular component to be processed on the clamping mechanism and clamping it; Step 2: The regulating mechanism adjusts the polishing position of the polishing mechanism to just above the edge of the tubular component according to the diameter of the tubular component; Step 3: The lifting cylinder adjusts the polishing mechanism according to the height of the tubular component so that the polishing surface of the polishing mechanism is located at the tube mouth of the tubular component; Step 4, reciprocatingly adjusting the polishing angle of the polishing mechanism by the regulating mechanism, so that the second polishing assembly of the polishing mechanism grinds and polishes the end face of the tube mouth and the inner and outer edges of the tube mouth of the tubular component; Step 5: The clamping mechanism drives the tubular component to rotate under the drive of the rotating mechanism, thereby cooperating with the polishing mechanism to complete the circumferential polishing of the tube mouth of the tubular component; Step 6: The projection of the polishing mechanism is adjusted by the regulating mechanism to be outside the tubular component and close to the outer wall of the tubular component, and the first polishing assembly of the polishing mechanism is driven by the lifting cylinder to gradually polish the outer wall of the tubular component from top to bottom; Step 7: The projection of the polishing mechanism is adjusted by the regulating mechanism to be inside the tubular component and close to the inner wall of the tubular component, and the first polishing assembly of the polishing mechanism is driven by the lifting cylinder to gradually polish the inner wall of the tubular component from top to bottom; Step 8: Turn the upper and lower heads of the tubular component and place them on the clamping mechanism and clamp them in place, and repeat steps 2 to 7.

[0015] The beneficial effects of the present invention are: In the present invention, the polishing angle of the polishing mechanism is reciprocatedly adjusted by the regulating mechanism, so that the second polishing assembly of the polishing mechanism grinds and polishes the end face of the tube mouth and the inner and outer edges of the tube mouth of the tubular component, and the clamping mechanism drives the tubular component to rotate under the drive of the rotating mechanism, thereby cooperating with the polishing mechanism to complete the circumferential polishing of the tube mouth of the tubular component; After the polishing of the tube mouth of the tubular component is completed, the present invention can complete the polishing of the inner and outer tube walls of the tubular component through the cooperation of the regulating mechanism and the lifting cylinder; In the present invention, the first polishing pad is fixed under the conical outer cover. Since a gap is left between the outer shell and the inner shell to form a flow channel for air flow, when the first polishing assembly and the second polishing assembly polish the tubular component, the waste chips generated can be sucked into the duct through the flow channel and finally absorbed by the vacuum cleaner, thereby protecting the surrounding environment during polishing processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a tubular component polishing device proposed by the present invention; Figure 2This is a schematic diagram of the side structure of a tubular component polishing device proposed by the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of a tubular component polishing device proposed by the present invention from another perspective; Figure 4 This is a schematic diagram of the structure of the control mechanism proposed by the present invention; Figure 5 This is a schematic diagram of the polishing mechanism structure proposed by the present invention; Figure 6 A schematic diagram of a half-section three-dimensional structure of the polishing mechanism proposed by the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the polishing mechanism proposed by the present invention; In the figure: 1. base; 2. clamping mechanism; 21. pedestal; 22. mechanical clamping claw; 23. spur gear ring; 3. rotating mechanism; 31. first motor; 32. reduction box; 33. spur gear; 4. fixing frame; 5. regulating mechanism; 51. slide plate; 52. clamping block; 53. support; 54. first cylinder; 55. second cylinder; 6. vacuum cleaner; 7. polishing mechanism; 71. shell; 711. outer shell; 712. inner shell; 713. fixing block; 72. first polishing assembly; 721. outer cover; 722. bevel gear disc; 723. first polishing pad; 73. driving assembly; 731. second motor; 732. first bevel gear; 733. second bevel gear; 74. second polishing assembly; 741. shaft; 742. third bevel gear; 743. turntable; 744. second polishing pad; 8. lifting cylinder; 9. rail frame. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 , Figure 2 and Figure 3 The present invention provides a technical solution: a tubular component polishing device, comprising a base 1 and a rail frame 9 fixed on the base 1, the base 1 is provided with a clamping mechanism 2 for fixing the tubular component, and a rotating mechanism 3 for driving the clamping mechanism 2 to drive the tubular component to rotate, a fixed frame 4 is suspended above the clamping mechanism 2, a polishing mechanism 7 and a dust collector 6 for absorbing waste chips generated during the processing of the polishing mechanism 7 through a guide tube are provided at the bottom of the fixed frame 4, and a regulating mechanism 5 for adjusting the polishing position and polishing angle of the polishing mechanism 7 and a lifting cylinder 8 for adjusting the polishing height of the polishing mechanism 7 are provided on the rail frame 9.

[0020] See also Figure 4 The regulating mechanism 5 includes a slide plate 51, a block 52 slidably connected to the rail frame 9 is fixed on the back of the slide plate 51, a lifting cylinder 8 is fixed to the rail frame 9, the outer end of the piston rod of the lifting cylinder 8 is fixedly connected to the slide plate 51, and two upper and lower distributed supports 53 are fixed on the slide plate 51. The first cylinder 54 is hinged on the support 53 located at a high position, and the second cylinder 55 is welded and fixed on the support 53 located at a low position. The outer ends of the piston rods of the first cylinder 54 and the second cylinder 55 are both hinged to the fixed frame 4. The first cylinder 54 and the second cylinder 55 have the same model and specifications and are connected to the same gas source, so as to maintain coordinated and uniform work.

[0021] See also Figure 5 , Figure 6 and Figure 7 The polishing mechanism 7 includes a shell 71 with an inner and outer double-layer structure, a driving assembly 73 arranged on one side of the shell 71, a first polishing assembly 72 for polishing the inner and outer walls of the tubular component under the drive of the driving assembly 73, and a second polishing assembly 74 for polishing the end of the tubular component under the synchronous drive of the driving assembly 73.

[0022] Furthermore, the shell 71 includes an outer shell 711, which is fixed to the lower end of the conduit connected to the vacuum cleaner 6. An inner shell 712 is fixed in the outer shell 711 through a plurality of annularly distributed fixing blocks 713. A gap is left between the outer shell 711 and the inner shell 712 to form a flow channel for air circulation. When the first polishing assembly 72 and the second polishing assembly 74 polish the tubular parts, the waste chips generated can be sucked into the conduit through the flow channel and then absorbed by the vacuum cleaner 6.

[0023] Specifically, the first polishing assembly 72 includes an outer cover 721 rotatably connected to the bottom of the housing 711 . The outer cover 721 is conical, and a bevel gear disk 722 is fixed to the outer top. A first polishing pad 723 is fixed to the bottom of the outer cover 721 .

[0024] Further, the driving assembly 73 includes a second motor 731, which is fixed outside the outer shell 711. The output shaft of the second motor 731 transversely penetrates the outer shell 711 and the inner shell 712 and is rotatably connected to the outer shell 711 and the inner shell 712. The output shaft of the second motor 731 is located outside the outer shell 711 and is fixed with a first bevel gear 732. The first bevel gear 732 is meshed with the bevel gear disk 722. The output shaft of the second motor 731 is located inside the inner shell 712 and is fixed with a second bevel gear 733. When the second motor 731 is working, the outer cover 721 is driven to rotate through the meshing of the first bevel gear 732 on the output shaft of the second motor 731 and the bevel gear disk 722, so that the inner and outer tube walls of the tubular component can be polished by the first polishing pad 723 at the bottom of the outer cover 721.

[0025] Further, the second polishing assembly 74 includes a shaft rod 741, which vertically penetrates the inner shell 712 and is rotatably connected to the inner shell 712. A third bevel gear 742 is fixed to the position of the shaft rod 741 in the inner shell 712. The third bevel gear 742 is meshed with the second bevel gear 733. A turntable 743 is fixed to the lower end of the shaft rod 741, and a second polishing pad 744 is fixed to the bottom of the turntable 743. When the second motor 731 is working, the second bevel gear 733 on the output shaft of the second motor 731 is meshed with the third bevel gear 742, which drives the shaft rod 741 to rotate, so that the second polishing pad 744 at the bottom of the turntable 743 can polish the pipe mouth of the tubular component.

[0026] It should be noted that the first polishing pad 723 is in a ring shape to facilitate polishing of the inner and outer walls of the tubular component, and the second polishing pad 744 is in a round cake shape to facilitate polishing of the tube mouth of the tubular component. The bottom surface of the second polishing pad 744 is lower than the first polishing pad 723, thereby avoiding wear of the first polishing pad 723 when polishing the tube mouth of the tubular component.

[0027] See also Figure 1 and Figure 3The clamping mechanism 2 includes a base 21, which is rotatably connected to the base 1. A mechanical clamp 22 is arranged on the top of the base 21. The mechanical clamp 22 belongs to a clamping device commonly used for tubular objects in the prior art, which will not be described in detail here. A circle of spur gear ring 23 is arranged on the outer periphery of the bottom of the base 21. The rotating mechanism 3 includes a first motor 31 and a reduction box 32. The first motor 31 and the reduction box 32 are both fixed on the base 1. The output shaft of the first motor 31 is fixedly connected to the input end of the reduction box 32. The output end of the reduction box 32 is fixed with a spur gear 33 meshing with the spur gear ring 23. The first motor 31 works and drives the spur gear 33 to rotate under the reduction transmission of the reduction box 32, and then the meshing of the spur gear 33 and the spur gear ring 23 drives the base 21 to rotate, so that the mechanical clamp 22 clamps the tubular parts and rotates synchronously.

[0028] Based on the above embodiment, the present invention also proposes a method for using a polishing device, comprising the following steps: Step 1: Place the tubular component to be processed on the clamping mechanism 2 and clamp it in place; Step 2: the regulating mechanism 5 adjusts the polishing position of the polishing mechanism 7 to just above the edge of the tubular component according to the diameter of the tubular component; Step 3: the lifting cylinder 8 adjusts the polishing mechanism 7 according to the height of the tubular component so that the polishing surface of the polishing mechanism 7 is at the tube mouth of the tubular component; Step 4: The polishing angle of the polishing mechanism 7 is reciprocatedly adjusted by the regulating mechanism 5, so that the second polishing assembly 74 of the polishing mechanism 7 grinds and polishes the end face of the tube mouth and the inner and outer edges of the tube mouth of the tubular component; Step 5: The clamping mechanism 2 drives the tubular component to rotate under the drive of the rotating mechanism 3, thereby cooperating with the polishing mechanism 7 to complete the circumferential polishing of the tube mouth of the tubular component; Step 6: The projection of the polishing mechanism 7 is adjusted by the regulating mechanism 5 to be outside the tubular component and close to the outer wall of the tubular component, and the first polishing assembly 72 of the polishing mechanism 7 is driven by the lifting cylinder 8 to gradually polish the outer wall of the tubular component from top to bottom; Step 7: The projection of the polishing mechanism 7 is adjusted by the regulating mechanism 5 to be inside the tubular component and close to the inner wall of the tubular component, and the lifting cylinder 8 drives the first polishing assembly 72 of the polishing mechanism 7 to gradually polish the inner wall of the tubular component from top to bottom; Step 8: Turn the upper and lower heads of the tubular component and place them on the clamping mechanism 2 and clamp them in place, and repeat steps 2 to 7.

[0029] The working principle of the present invention is as follows: When polishing the mouth of a tubular component, the first cylinder 54 and the second cylinder 55 work synchronously, and the expansion and contraction amounts of the first cylinder 54 and the second cylinder 55 are kept consistent, so that the polishing surface of the polishing mechanism 7 is horizontal and moves to the top of the edge of the tubular component, and then the lifting cylinder 8 works to make the second polishing pad 744 fit with the end face of the tubular component, the second cylinder 55 stops working and keeps the expansion and contraction amount unchanged, the first cylinder 54 starts to reciprocate and expand and contract, and the extension and contraction amounts are the same, so as to continuously adjust the polishing surface of the second polishing assembly 74, and the second polishing pad 744 grinds and polishes the end face of the mouth of the tubular component and the inner and outer edges of the mouth of the tubular component; When polishing the outer wall of the tubular component, the polishing surface of the second polishing assembly 74 is first adjusted to a horizontal level by the first cylinder 54, and then the first cylinder 54 and the second cylinder 55 are synchronously contracted, so that the projection of the polishing mechanism 7 is outside the tubular component and close to the outer wall of the tubular component, and the lifting cylinder 8 drives the first polishing assembly 72 of the polishing mechanism 7 to gradually polish the outer wall of the tubular component from top to bottom. During the polishing process, the second cylinder 55 stops working and keeps the extension amount unchanged, and the first cylinder 54 is first contracted and then extended, and the contraction and extension amounts are the same, and the polishing of the outer wall of the tubular component is completed in this reciprocating manner; When polishing the inner wall of the tubular component, the polishing surface of the second polishing assembly 74 is first adjusted to a horizontal level by the first cylinder 54, and then the first cylinder 54 and the second cylinder 55 are extended synchronously, so that the projection of the polishing mechanism 7 is inside the tubular component and close to the inner wall of the tubular component, and the lifting cylinder 8 drives the first polishing assembly 72 of the polishing mechanism 7 to gradually polish the inner wall of the tubular component from top to bottom. During the polishing process, the second cylinder 55 stops working and keeps the extension amount unchanged, and the first cylinder 54 first extends and then contracts, and the extension and contraction amounts are the same, and the polishing work of the outer wall of the tubular component is completed in this reciprocating manner.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tubular component polishing device, comprising a base (1) and a rail frame (9) fixed to the base (1), wherein the base (1) is provided with a clamping mechanism (2) for fixing the tubular component, and a rotating mechanism (3) for driving the clamping mechanism (2) to drive the tubular component to rotate, characterized in that: A fixed frame (4) is suspended above the clamping mechanism (2); a polishing mechanism (7) and a vacuum cleaner (6) for absorbing waste chips generated during the processing of the polishing mechanism (7) through a conduit are arranged at the bottom of the fixed frame (4); a regulating mechanism (5) for adjusting the polishing position and polishing angle of the polishing mechanism (7) and a lifting cylinder (8) for adjusting the polishing height of the polishing mechanism (7) are arranged on the rail frame (9); The polishing mechanism (7) comprises a shell (71) having an inner and outer double-layer structure, a driving assembly (73) arranged on one side of the shell (71), a first polishing assembly (72) for polishing the inner wall and the outer wall of the tubular component under the drive of the driving assembly (73), and a second polishing assembly (74) for polishing the end portion of the tubular component under the synchronous drive of the driving assembly (73).

2. A tubular component polishing device according to claim 1, characterized in that: The regulating mechanism (5) comprises a slide plate (51), a block (52) slidably connected to a rail frame (9) is fixed on the back of the slide plate (51), the lifting cylinder (8) is fixed to the rail frame (9), the outer end of the piston rod of the lifting cylinder (8) is fixedly connected to the slide plate (51), two supports (53) distributed up and down are fixed on the slide plate (51), a first cylinder (54) is hingedly connected to the support (53) located at the upper position, and a second cylinder (55) is welded and fixed to the support (53) located at the lower position, and the outer ends of the piston rods of the first cylinder (54) and the second cylinder (55) are both hingedly connected to the fixed frame (4).

3. The tubular component polishing device according to claim 1, characterized in that: The housing (71) comprises an outer shell (711), the outer shell (711) being fixed to the lower end of a conduit connected to the vacuum cleaner (6), an inner shell (712) being fixed inside the outer shell (711) via a plurality of annularly distributed fixing blocks (713), and a gap being left between the outer shell (711) and the inner shell (712) to form a flow channel for airflow.

4. A tubular component polishing device according to claim 3, characterized in that: The first polishing assembly (72) comprises an outer cover (721), the outer cover (721) being rotatably connected to the bottom of the outer shell (711), the outer cover (721) being conical, and a conical toothed disc (722) being fixed on the outer side of the top, and a first polishing pad (723) being fixed on the bottom of the outer cover (721).

5. The tubular component polishing device according to claim 4, characterized in that: The driving assembly (73) comprises a second motor (731), the second motor (731) being fixed outside the outer shell (711), the output shaft of the second motor (731) penetrating the outer shell (711) and the inner shell (712) in a transverse direction and being rotationally connected to the outer shell (711) and the inner shell (712), a first bevel gear (732) being fixed to a portion of the output shaft of the second motor (731) located outside the outer shell (711), the first bevel gear (732) being meshed with the bevel gear disc (722), and a second bevel gear (733) being fixed to a portion of the output shaft of the second motor (731) located inside the inner shell (712).

6. A tubular component polishing device according to claim 5, characterized in that: The second polishing assembly (74) comprises a shaft (741), wherein the shaft (741) vertically penetrates the inner shell (712) and is rotatably connected to the inner shell (712); a third bevel gear (742) is fixed to a portion of the shaft (741) located inside the inner shell (712); the third bevel gear (742) is meshed with the second bevel gear (733); a turntable (743) is fixed to the lower end of the shaft (741), and a second polishing pad (744) is fixed to the bottom of the turntable (743).

7. The tubular component polishing device according to claim 6, characterized in that: The first polishing pad (723) is in the shape of a circular ring, the second polishing pad (744) is in the shape of a circular cake, and the bottom surface of the second polishing pad (744) is lower than the first polishing pad (723).

8. The tubular component polishing device according to claim 1, characterized in that: The clamping mechanism (2) comprises a base (21), the base (21) is rotatably connected to the base (1), a mechanical clamping claw (22) is arranged on the top of the base (21), and a circle of spur gear rings (23) is arranged on the periphery of the bottom of the base (21).

9. The tubular component polishing device according to claim 8, characterized in that: The rotating mechanism (3) comprises a first motor (31) and a reduction box (32); the first motor (31) and the reduction box (32) are both fixed on the base (1); an output shaft of the first motor (31) is fixedly connected to an input end of the reduction box (32); and a spur gear (33) meshing with a spur gear ring (23) is fixed to the output end of the reduction box (32).

10. A method for using a polishing device, according to the tubular component polishing device of claim 1, characterized in that: The following steps are involved: Step 1: placing the tubular component to be processed on the clamping mechanism (2) and clamping it in place; Step 2: the regulating mechanism (5) adjusts the polishing position of the polishing mechanism (7) to just above the edge of the tubular component according to the diameter of the tubular component; Step 3: The lifting cylinder (8) adjusts the polishing mechanism (7) according to the height of the tubular component so that the polishing surface of the polishing mechanism (7) is located at the mouth of the tubular component; Step 4, reciprocatingly adjusting the polishing angle of the polishing mechanism (7) by means of the regulating mechanism (5), so that the second polishing assembly (74) of the polishing mechanism (7) grinds and polishes the end face of the tube mouth and the inner and outer edges of the tube mouth of the tubular component; Step 5: the clamping mechanism (2) drives the tubular component to rotate under the drive of the rotating mechanism (3), thereby cooperating with the polishing mechanism (7) to complete the circumferential polishing of the tube mouth of the tubular component; Step six, adjusting the projection of the polishing mechanism (7) by the regulating mechanism (5) so that it is outside the tubular component and close to the outer wall of the tubular component, and driving the first polishing assembly (72) of the polishing mechanism (7) by the lifting cylinder (8) to gradually polish the outer wall of the tubular component from top to bottom; Step seven, adjusting the projection of the polishing mechanism (7) by the regulating mechanism (5) so that it is inside the tubular component and close to the inner wall of the tubular component, and driving the first polishing assembly (72) of the polishing mechanism (7) by the lifting cylinder (8) to gradually polish the inner wall of the tubular component from top to bottom; Step 8: After the upper and lower heads of the tubular component are turned over, they are seated on the clamping mechanism (2) and clamped and fixed, and the process from step 2 to step 7 is repeated.

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