Swing arm type coping device

Abstract

The utility model discloses a swing arm type coping device which comprises a mounting base, a driving air cylinder, a swing frame, an adjusting mechanism, a coping mechanism and a control box, the mounting base comprises a bottom plate and an inclined frame, the swing frame comprises a stand column, a lug plate is arranged on one side of the stand column, the end of a telescopic rod of the driving air cylinder is rotationally connected with the lug plate, and the adjusting mechanism comprises a transversely-arranged supporting column. One side of the supporting column is connected with the stand column through a first connecting assembly, the other side of the supporting column is connected with a push-pull block through a second connecting assembly, an L-shaped plate is arranged above the push-pull block, a push-pull air cylinder is arranged at the top end of the L-shaped plate, and a telescopic rod of the push-pull air cylinder penetrates through the L-shaped plate to be fixed to the top end of the push-pull block; an involute cylindrical helical gear is arranged at the output end of the rotating motor, the involute cylindrical helical gear is in transmission fit with the transmission assembly, and the transmission assembly is in running fit with the coping assembly; the electrode cap grinding device can be used for grinding an electrode cap on a welding gun at a fixed welding station.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding equipment technical field, especially a swing arm type grinding device. BACKGROUND

[0002] At present, under the compulsion of market competition and production capacity process, the transformation of enterprises in the field of processing production and manufacturing is increasingly urgent, and a large number of production enterprises have carried out a lot of innovation to realize successful transformation, welding is a common processing technology of mechanical processing production enterprises, after welding, the welding part often needs to be ground, the quality of grinding level is directly related to the welding quality and the assembly quality of the later assembly, and the efficiency of grinding, which is related to the cost of production, for fixed welding station, workers usually hold grinding tools to grind the electrode cap on the welding gun, this manual grinding method is low in efficiency, since the welding gun and the grinding station are difficult to split, it does not meet the trend of increasingly professional processing in the production line, therefore, we propose a swing arm type grinding device. SUMMARY

[0003] The utility model solves the problem that the fixed welding station is low in efficiency of manual grinding by workers.

[0004] To solve the above technical problems, the utility model provides technical scheme as follows: A swing arm type dressing device, it includes mounting seat, drive cylinder, swing frame, adjusting mechanism, dressing mechanism and control box, the mounting seat includes the bottom plate and the inclined frame who are connected with each other, the top of the inclined frame is provided with two bearing seats one symmetrically, the middle part of the bottom plate is provided with two bearing seats two symmetrically, the outer wall of drive cylinder is provided with fixed frame, the both sides of fixed frame are provided with first rotating shaft fixed in bearing seat one respectively, the swing frame includes stand, the both sides of stand are provided with two sector plates symmetrically, the side of stand towards drive cylinder is provided with lug plate, the telescopic rod end of drive cylinder is rotatably connected with lug plate, the bottom end of stand is provided with rotating column, the both sides of rotating column are provided with second rotating shaft rotatably connected with bearing seat two, the adjusting mechanism includes cross -supporting column, the one side of supporting column is connected with stand through first connecting component, the other side of supporting column is connected with push -and -pull block through second connecting component, the top of push -and -pull block is provided with L shaped plate, the top end of L shaped plate is provided with push -and -pull cylinder, the telescopic rod of push -and -pull cylinder passes through L shaped plate and is fixed with the top end of push -and -pull block, the dressing mechanism includes the mounting block fixed in one side of L shaped plate, the both sides of mounting block are provided with through -hole, the through -hole is provided with mounting shaft sliding respectively, the top end and bottom end of two mounting shafts are provided with upper casing and lower casing respectively, the motor protection casing is arranged between the upper casing and the lower casing, the motor protection casing is provided with rotating motor, the middle part of upper casing is provided with rotating hole, the output of rotating motor is provided with involute cylindrical helical gear, the involute cylindrical helical gear passes through rotating hole and is transmission matched with transmission assembly, the outside of upper casing is provided with first dressing hole, the top end of upper casing is provided with top shell, the position corresponding with first dressing hole of top shell is provided with second dressing hole, the first dressing hole and second dressing hole are provided with dressing assembly, transmission assembly is rotatably connected with dressing assembly, the control box is fixed in one side of inclined frame, the inside of control box is provided with PLC controller, drive cylinder, push -and -pull cylinder and rotating motor are electrically connected with PLC controller respectively.

[0005] As a preferred scheme of the swing arm type dressing device, the outer wall of the two sector plates is respectively provided with a limiting block, the inclined frame is provided with a first support frame at the position corresponding to the extrusion of the limiting block, the first support frame is provided with an oil buffer one, the bottom plate is provided with a second support frame at the position corresponding to the extrusion of the limiting block, and the second support frame is provided with an oil buffer two.

[0006] As a preferred scheme of the swing arm type grinding device, the first connecting assembly comprises two first clamping blocks and two second clamping blocks clamped on the two sides of the outer wall of the stand column, the first clamping block and the second clamping block are connected through bolts, the two first clamping blocks are fixed on one side of the first fixed plate, and the other side of the first fixed plate is fixedly connected with the supporting column.

[0007] As a preferred scheme of the swing arm type grinding device, the second connecting assembly comprises two third clamping blocks and two fourth clamping blocks clamped on the two sides of the outer wall of the supporting column, the two third clamping blocks and the two fourth clamping blocks are connected through bolts, the two third clamping blocks are fixed on one side of the second fixed plate, and the other side of the second fixed plate is fixed on the side wall of the push-pull block.

[0008] As a preferred scheme of the swing arm type grinding device, the two sides of the push-pull block are respectively provided with limiting holes, and the bottom ends of the two sides of the plate are respectively provided with limiting columns which are slidably inserted into the limiting holes.

[0009] As a preferred scheme of the swing arm type grinding device, a first spring is sleeved on the outer wall of the mounting shaft between the upper shell and the mounting block, and a second spring is sleeved on the outer wall of the mounting shaft between the lower shell and the mounting block.

[0010] As a preferred scheme of the swing arm type grinding device, the transmission assembly comprises a rotating rod rotatably arranged between the upper shell and the top shell, the outer wall of the rotating rod is provided with a first gear and a helical gear, and the involute cylindrical helical gear is engaged with the helical gear.

[0011] As a preferred scheme of the swing arm type grinding device, the grinding assembly comprises a first mounting ring and a second mounting ring arranged on the outer periphery of the first grinding hole and the second grinding hole, a cylindrical tool seat is arranged in the first mounting ring and the second mounting ring, a second gear engaged with the first gear is arranged on the middle part of the outer wall of the cylindrical tool seat, and a first bearing and a second bearing fixedly arranged on the inner walls of the first mounting ring and the second mounting ring are arranged on the outer wall of the cylindrical tool seat above and below the second gear.

[0012] As a preferred scheme of the swing arm type grinding device, the two sides of the top end and the bottom end of the cylindrical tool seat are respectively provided with grooves in communication with each other, the middle parts of the top end and the bottom end of the cylindrical tool seat are recessed to form fan-shaped supporting tables, the side edges of the fan-shaped supporting tables are recessed to form clamping grooves, and a tool is fixed in the clamping groove.

[0013] The utility model discloses beneficial effect is: the utility model discloses a PLC controller control drive cylinder to the swing frame is pushed and pulled operation, the column in the swing frame is pulled to the set position after by the electrode cap of fixed welding position welding torch of grinding mechanism carries out grinding, accelerates the grinding efficiency, also saves manpower. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment description, obviously, the drawing in the following description only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings. Wherein:

[0015] Figure 1 It is a kind of swing arm type grinding device's intuitive diagram.

[0016] Figure 2 It is a kind of swing arm type grinding device in adjusting mechanism's structure schematic view.

[0017] Figure 3 It is a kind of swing arm type grinding device in the internal structure diagram of upper shell.

[0018] Figure 4 It is a kind of swing arm type grinding device in the internal structure diagram of grinding mechanism after removing top shell.

[0019] Figure 5 It is a kind of swing arm type grinding device in the internal structure diagram of top shell.

[0020] Figure 6 It is a kind of swing arm type grinding device in the cooperation diagram of transmission assembly and grinding assembly.

[0021] Figure 7 It is a kind of swing arm type grinding device in the plan view of cylindrical tool holder. DETAILED DESCRIPTION

[0022] The utility model will be specifically introduced in the following in connection with drawing and embodiment.

[0023] Reference Figures 1-7The embodiment is a swing arm type grinding device, which comprises a mounting seat 100, a driving cylinder 200, a swing frame 300, an adjusting mechanism 400, a grinding mechanism 500 and a control box 600. The mounting seat 100 comprises a bottom plate 101 and an inclined frame 102 connected with each other. Two bearing seats I 103 are symmetrically arranged on the top of the inclined frame 102. Two bearing seats II 104 are symmetrically arranged in the middle of the bottom plate 101. The outer wall of the driving cylinder 200 is provided with a fixed frame 201. First rotating shafts 202 are fixedly arranged on the two sides of the fixed frame 201 and arranged in the bearing seats I 103. The swing frame 300 comprises a stand column 301. Two fan-shaped plates 302 are symmetrically arranged on the two sides of the stand column 301. An ear plate 303 is arranged on the side of the stand column 301 facing the driving cylinder 200. The telescopic rod end of the driving cylinder 200 is rotationally connected with the ear plate 303. A rotating column 304 is arranged at the bottom end of the stand column 301. Second rotating shafts 304a are rotationally connected with the bearing seats II 104 and arranged on the two sides of the rotating column 304. The adjusting mechanism 400 comprises a horizontally arranged supporting column 401. The supporting column 401 is connected with the stand column 301 through a first connecting assembly 402 on one side. The supporting column 401 is connected with a push-pull block 404 through a second connecting assembly 403 on the other side. An L-shaped plate 405 is arranged above the push-pull block 404. A push-pull cylinder 406 is arranged at the top end of the L-shaped plate 405. The telescopic rod of the push-pull cylinder 406 penetrates through the L-shaped plate 405 and is fixed at the top end of the push-pull block 404. The grinding mechanism 500 comprises a mounting block 501 fixed on one side of the L-shaped plate 405. Through holes are formed in the two sides of the mounting block 501. Mounting shafts 502 are slidingly arranged in the through holes. Upper housings 503 and lower housings 504 are arranged at the top end and the bottom end of the two mounting shafts 502. A motor protection shell 505 is arranged between the upper housing 503 and the lower housing 504. A rotating motor 505a is arranged in the motor protection shell 505. A rotating hole 503a is formed in the middle of the upper housing 503. A involute cylindrical helical gear 505b is arranged at the output end of the rotating motor 505a. The involute cylindrical helical gear 505b penetrates through the rotating hole 503a and is in transmission cooperation with a transmission assembly 506. A first grinding hole 503b is formed in the outer side of the upper housing 503. A top housing 507 is arranged at the top end of the upper housing 503. A second grinding hole 507a is formed in the top housing 507 and corresponds to the first grinding hole 503b. A grinding assembly 508 is arranged between the first grinding hole 503b and the second grinding hole 507a. The transmission assembly 506 is in transmission cooperation with the grinding assembly 508. The control box 600 is fixed on one side of the inclined frame 102. A PLC controller is arranged in the control box 600. The driving cylinder 200, the push-pull cylinder 406 and the rotating motor 505a are electrically connected with the PLC controller.

[0024] The telescopic rod of the driving cylinder 200 is retracted by the PLC controller, the telescopic rod of the driving cylinder 200 pulls the column 301 to rotate through the lug plate 303, until the column 301 rotates to a set angle to reach a set position, the telescopic rod of the push-pull cylinder 406 is retracted by the PLC controller, so that the L-shaped plate 405 is lowered by the push-pull cylinder 406, the electrode cap below the welding gun is inserted into the first grinding hole 503b and cooperates with the grinding assembly 508, and the electrode cap above the welding gun is also inserted into the second grinding hole 507a and is ground by the grinding assembly 508, at this time, the rotating motor 505a is controlled to rotate by the PLC controller, the rotating motor 505a drives the transmission assembly 506 through the involute cylindrical helical gear 505b, and then drives the grinding assembly 508 to rotate to grind the electrode cap, after the work is completed, the electrode cap above the welding gun is first separated, then the telescopic rod of the push-pull cylinder 406 is extended by the PLC controller, the L-shaped plate 405 is raised by the push-pull cylinder 406, and then the entire grinding mechanism 500 is raised, so that the electrode cap in the welding gun below is pulled out of the first grinding hole 503b and separated from the grinding assembly 508, the telescopic rod of the driving cylinder 200 is extended by the PLC controller, and the column 301 is rotated to the original position by the lug plate 303 to wait for the next grinding work.

[0025] In the embodiment, the outer walls of the two fan-shaped plates 302 are respectively provided with limiting blocks 302a, the first support frame 105 is arranged at a position corresponding to the position of the limiting block 302a pressed by the inclined frame 102, the oil pressure buffer one 105a is arranged on the first support frame 105, the second support frame 106 is arranged at a position corresponding to the position of the limiting block 302a pressed by the bottom plate 101, and the oil pressure buffer two 106a is arranged on the second support frame 106.

[0026] In the initial position, the limiting blocks 302a on the two fan-shaped plates 302 on both sides of the column 301 abut against the oil pressure buffer two 106a on the second support frame 106, when the column 301 is swung by the driving cylinder 200, the oil pressure buffer one 105a on the first support frame 105 can prevent the swing angle from being too large and rigidly colliding with the inclined frame 102.

[0027] In the embodiment, the first connecting assembly 402 includes two first clamping blocks 402a and two second clamping blocks 402b clamped on the outer walls of the column 301 on both sides, the first clamping block 402a and the second clamping block 402b are connected by bolts, the two first clamping blocks 402a are fixed on one side of the first fixed plate 402a, and the other side of the first fixed plate 402a is fixedly connected with the support column 401.

[0028] In the embodiment, the second connecting assembly 403 comprises two third clamping blocks 403a and two fourth clamping blocks 403b clamped on the outer wall of the support column 401, the two third clamping blocks 403a and the two fourth clamping blocks 403b are connected by bolts, the two third clamping blocks 403a are fixed on one side of the second fixed plate 403c, and the other side of the second fixed plate 403c is fixed on the side wall of the push-pull block 404.

[0029] In the embodiment, the push-pull block 404 is provided with a limiting hole 404a on each side, and the L-shaped plate 405 is provided with a limiting column 405a slidingly inserted into the limiting hole 404a on each side of the bottom end.

[0030] The limiting holes 404a on the two sides of the push-pull block 404 can prevent the L-shaped plate 405 from rotating, so that the electrode cap on the welding gun cannot be accurately inserted into the first grinding hole 503b or the second grinding hole 507a of the grinding mechanism 500.

[0031] In the embodiment, the outer wall of the mounting shaft 502 between the upper shell 503 and the mounting block 501 is sleeved with a first spring 502a, and the outer wall of the mounting shaft 502 between the lower shell 504 and the mounting block 501 is sleeved with a second spring 502b.

[0032] When the electrode cap on the welding gun is inserted into the first grinding hole 503b or the second grinding hole 507a, the first spring 502a and the second spring 502b can play a role of shock absorption, avoiding rigid collision and loss.

[0033] In the embodiment, the transmission assembly 506 comprises a rotating rod 506a rotatably arranged between the upper shell 503 and the top shell 507, the rotating rod 506a is provided with a first gear 506b and a bevel gear 506c on the outer wall, and the involute cylindrical bevel gear 505b is engaged with the bevel gear 506c.

[0034] Since the involute cylindrical bevel gear 505b is engaged with the bevel gear 506c, the involute cylindrical bevel gear 505b can drive the bevel gear 506c to rotate, thereby driving the first gear 506b to rotate.

[0035] In the embodiment, the grinding assembly 508 comprises a first mounting ring 508a and a second mounting ring 508b arranged on the outer periphery of the first grinding hole 503b and the second grinding hole 507a, a cylindrical tool holder 508c is arranged in the first mounting ring 508a and the second mounting ring 508b, a second gear 508d engaged with the first gear 506b is arranged on the outer wall of the cylindrical tool holder 508c, and a first bearing 508e and a second bearing 508f are arranged on the outer wall of the cylindrical tool holder 508c above and below the second gear 508d, and the first bearing 508e and the second bearing 508f are fixed on the inner wall of the first mounting ring 508a and the second mounting ring 508b.

[0036] When the first gear 506b rotates, the second gear 508d rotates, and the cylindrical tool holder 508c further rotates.

[0037] In this embodiment, the top and bottom of the cylindrical tool holder 508c are provided with notches 508c-1 that are in communication with each other, and the middle of the top and bottom of the cylindrical tool holder 508c is provided with a fan-shaped support table 508c-2 that is recessed on both sides, and the side of the fan-shaped support table 508c-2 is provided with a clamping groove 508c-3 that is recessed, and a tool 508c-4 is fixed in the clamping groove 508c-3.

[0038] The electrode caps at the top and bottom of the cylindrical tool holder 508c can be inserted into the fan-shaped support table 508c-2, and the electrode caps are ground by the tool 508c-4.

[0039] Working principle: in the initial position, the limiting block 302a on the fan-shaped plate 302 on both sides of the stand 301 abuts against the oil buffer 106a on the second support frame 106, the PLC controller controls the contraction of the extension rod of the drive cylinder 200, the extension rod of the drive cylinder 200 pulls the stand 301 through the lug plate 303 to rotate, until it rotates to the set angle and reaches the set position, the PLC controller controls the contraction of the extension rod of the push-pull cylinder 406, so the push-pull cylinder 406 drives the L-shaped plate 405 to descend, the L-shaped plate 405 drives the grinding mechanism 500 to descend, the electrode caps below the welding gun are inserted into the first grinding hole 503b and the fan-shaped support table 508c-2 of the cylindrical tool holder 508c, and at the same time, the electrode caps above the welding gun are also inserted into the second grinding hole 507a and the fan-shaped support table 508c-2 of the cylindrical tool holder 508c, when the electrode caps above the welding gun are inserted into the first grinding hole 503b or the second grinding hole 507a, the first spring 502a and the second spring 502b can play a role in shock absorption, avoiding rigid collision and causing loss, at this time, the PLC controller controls the rotation of the motor 505a, the involute cylindrical helical gear 505b at the output end of the motor 505a can drive the helical gear 506c to rotate, and further drive the first gear 506b to rotate, when the first gear 506b rotates, the second gear 508d rotates, and the cylindrical tool holder 508c further rotates, and the tool 508c-4 grinds the electrode caps, after the work is completed, the electrode caps above the welding gun are first separated, then the PLC controller controls the extension of the extension rod of the push-pull cylinder 406, the push-pull cylinder 406 drives the L-shaped plate 405 to rise, and further drives the entire grinding mechanism 500 to rise, so that the electrode caps in the welding gun below are pulled out of the first grinding hole 503b and separated from the grinding assembly 508, the PLC controller controls the extension of the extension rod of the drive cylinder 200, and the stand 301 is pushed to rotate to the original position through the lug plate 303, waiting for the next grinding work.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A swing arm type dressing device characterized by: The utility model provides a kind of grinding machine, including mounting seat (100), drive cylinder (200), swing frame (300), adjusting mechanism (400), grinding mechanism (500) and control box (600), the mounting seat (100) includes mutually connected bottom plate (101) and inclined frame (102), the inclined frame (102) top is provided with two bearing seats one (103) symmetrically, the bottom plate (101) middle part is provided with two bearing seats two (104) symmetrically, the outer wall of drive cylinder (200) is provided with fixed frame (201), the both sides of fixed frame (201) are provided with first rotating shaft (202) fixed in bearing seat one (103) respectively, the swing frame (300) includes stand (301), the both sides of stand (301) are provided with two sector plates (302) symmetrically, the side of stand (301) towards drive cylinder (200) is provided with lug plate (303), the telescopic rod end of drive cylinder (200) is rotatably connected with lug plate (303), the bottom end of stand (301) is provided with rotating column (304), the both sides of rotating column (304) are provided with second rotating shaft (304a) rotatably connected with bearing seat two (104), the adjusting mechanism (400) includes transverse support column (401), the side of support column (401) is connected with stand (301) by first connecting assembly (402), the other side of support column (401) is connected with push-pull block (404) by second connecting assembly (403), L-shaped plate (405) is provided above push-pull block (404), L-shaped plate (405) top is provided with push-pull cylinder (406), the telescopic rod of push-pull cylinder (406) passes through L-shaped plate (405) and is fixed with push-pull block (404) top end, the grinding mechanism (500) includes mounting block (501) fixed on the side of L-shaped plate (405), the both sides of mounting block (501) are provided with through hole, mounting shaft (502) is slidably arranged in through hole respectively, the top end and bottom end of two mounting shafts (502) are provided with upper shell (503) and lower shell (504) respectively, motor protection shell (505) is arranged between upper shell (503) and lower shell (504), rotating motor (505a) is arranged in motor protection shell (505), rotating hole (503a) is formed in the middle of upper shell (503), the output end of rotating motor (505a) is provided with involute cylindrical helical gear (505b), the involute cylindrical helical gear (505b) passes through rotating hole (503a) and is drivingly connected with transmission assembly (506), first grinding hole (503b) is formed in the outside of upper shell (503), top shell (507) is arranged on the top end of upper shell (503), second grinding hole (507a) is formed in the position corresponding to first grinding hole (503b) of top shell (507), grinding assembly (508) is arranged between first grinding hole (503b) and second grinding hole (507a).The transmission assembly (506) is rotationally matched with the grinding assembly (508), the control box (600) is fixed on one side of the tilting frame (102), the control box (600) is internally provided with a PLC controller, and the driving cylinder (200), the push-pull cylinder (406) and the rotating motor (505a) are respectively electrically connected with the PLC controller.

2. A swing arm type dressing tool according to claim 1, characterized in that: The outer wall of two of the sector plates (302) is respectively provided with a limiting block (302a), the position corresponding to the extrusion of the limiting block (302a) of the inclined frame (102) is provided with a first support frame (105), the first support frame (105) is provided with an oil buffer (105a), the position corresponding to the extrusion of the limiting block (302a) of the bottom plate (101) is provided with a second support frame (106), and the second support frame (106) is provided with an oil buffer (106a).

3. A swing arm type dressing tool according to claim 1, characterized in that: The first connecting assembly (402) comprises two first clamping blocks (402a) and two second clamping blocks (402b) clamped on the outer wall of the stand column (301), the first clamping block (402a) and the second clamping block (402b) are connected by bolts, the two first clamping blocks (402a) are fixed on one side of a first fixed plate (402c), and the other side of the first fixed plate (402c) is fixedly connected with the support column (401).

4. A swing arm type dressing tool according to claim 1, characterized in that: The second connecting assembly (403) comprises two third clamping blocks (403a) and two fourth clamping blocks (403b) clamped on the outer wall of the support column (401), the two third clamping blocks (403a) and the two fourth clamping blocks (403b) are connected by bolts, the two third clamping blocks (403a) are fixed on one side of a second fixed plate (403c), and the other side of the second fixed plate (403c) is fixed to the side wall of the push-pull block (404).

5. A swing arm type dressing tool according to claim 1, characterized in that: The push-pull block (404) is provided with a limiting hole (404a) on the two sides, and the L-shaped plate (405) is provided with a limiting column (405a) slidably inserted into the limiting hole (404a) on the two sides of the bottom end.

6. A swing arm type dressing tool according to claim 1, characterized in that: A first spring (502a) is sleeved on the outer wall of the mounting shaft (502) between the upper shell (503) and the mounting block (501), and a second spring (502b) is sleeved on the outer wall of the mounting shaft (502) between the lower shell (504) and the mounting block (501).

7. A swing arm type dressing tool according to claim 1, wherein: The transmission assembly (506) comprises a rotating rod (506a) rotatably arranged between the upper shell (503) and the top shell (507), the rotating rod (506a) is provided with a first gear (506b) and a helical gear (506c) on the outer wall, and the involute cylindrical helical gear (505b) is engaged with the helical gear (506c).

8. A swing arm type dressing tool according to claim 7, characterized in that: The grinding assembly (508) comprises a first mounting ring (508a) and a second mounting ring (508b) arranged on the outer periphery of the first grinding hole (503b) and the second grinding hole (507a), the first mounting ring (508a) and the second mounting ring (508b) are provided with a cylindrical tool holder (508c) in the inner wall, the outer wall of the cylindrical tool holder (508c) is provided with a second gear (508d) engaged with the first gear (506b) in the middle, and the outer wall of the cylindrical tool holder (508c) above and below the second gear (508d) is respectively provided with a first bearing (508e) and a second bearing (508f) fixed in the inner wall of the first mounting ring (508a) and the second mounting ring (508b).

9. A swing arm type dressing tool as claimed in claim 8, characterized in that: The top and bottom of the cylindrical tool seat (508c) are provided with notches (508c-1) on both sides, which are in communication with each other, the middle of the top and bottom of the cylindrical tool seat (508c) is concave to form a fan-shaped support table (508c-2), the side of the fan-shaped support table (508c-2) is concave to form a clamping groove (508c-3), and a tool (508c-4) is fixed in the clamping groove (508c-3).

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