CN217291884U - Automatic polishing machine for excircle - Google Patents

Abstract

The utility model provides an automatic burnishing machine of excircle belongs to burnishing equipment technical field, include: the polishing device comprises a base frame, a polishing device and a polishing device, wherein the base frame comprises a base arranged along the horizontal direction, a jacking track arranged on the base along the length direction of the base, and a polishing track arranged on the base and parallel to the jacking track; the power head mechanism is arranged on the base, is positioned at one end of the jacking track, and is used for horizontally clamping the middle cylinder and driving the middle cylinder to rotate by taking the central axis of the middle cylinder as a center; the jacking mechanism is arranged on the jacking track in a sliding manner and is matched with the power head mechanism to clamp the middle cylinder; and the polishing mechanism is arranged on the polishing track in a sliding manner and is used for polishing the outer side wall of the rotating middle cylinder. The utility model discloses set up unit head mechanism and the tight mechanism in top, join in marriage and press from both sides tight well jar to the jar is rotatory in the drive, sets up polishing mechanism, and the well jar lateral wall in the pairing rotation carries out polishing treatment when slideing along well jar length direction, and the cooperation is closely, and the polishing is even, and polishing effect is good, efficient.

Description

Automatic polishing machine for excircle

Technical Field

The utility model relates to a polishing equipment technical field, concretely relates to automatic burnishing machine of excircle.

Background

The common processing method for polishing the excircle of the existing hydraulic cylinder middle cylinder and other parts comprises two methods: the traditional method directly adopts manual polishing by using abrasive cloth; or, the existing polishing equipment adopts a motor to drive an abrasive belt or a polishing wheel to polish the outer circles of parts such as a hydraulic cylinder middle cylinder and the like. The manual gauze polishing efficiency is low; the polishing equipment has poor fixing effect on cylindrical parts such as a cylinder in a hydraulic cylinder and the like, is not closely matched with an abrasive belt or a polishing wheel, has poor matching effect and uneven polishing, and the polishing effect needs to be improved. Accordingly, there is a need to provide an automatic cylindrical polishing machine to solve the above existing problems.

Disclosure of Invention

In view of this, the utility model provides an automatic burnishing machine of excircle to solve the problem that exists among the background art.

In order to solve the technical problem, the utility model provides an automatic burnishing machine of excircle, include:

the polishing device comprises a base frame, a polishing device and a polishing device, wherein the base frame comprises a base arranged along the horizontal direction, a jacking track arranged on the base along the length direction of the base, and a polishing track arranged on the base and parallel to the jacking track;

the power head mechanism is arranged on the base and is positioned at one end of the jacking track, and the power head mechanism is used for horizontally clamping the middle cylinder and driving the middle cylinder to rotate by taking the central axis of the middle cylinder as the center;

the jacking mechanism is arranged on the jacking track in a sliding mode and matched with the power head mechanism to clamp the middle cylinder;

and the polishing mechanism is arranged on the polishing track in a sliding manner and is used for polishing the outer side wall of the middle cylinder in rotation.

Furthermore, the power head mechanism comprises a fixing frame arranged on the base, a clamping assembly rotatably arranged on the fixing frame, and a clamping rotary driving assembly arranged on the base and used for driving the clamping assembly to rotate.

Furthermore, the clamping assembly comprises a clamping rotating shaft which is arranged along the horizontal direction and is rotationally connected with the fixed frame, and a three-jaw chuck which is fixedly connected with one end of the clamping rotating shaft, which is close to the jacking mechanism;

the clamping rotary driving assembly is in transmission connection with the clamping rotating shaft and is used for driving the clamping rotating shaft to rotate by taking the central axis of the clamping rotating shaft as a center.

Furthermore, the clamping rotary driving assembly comprises a clamping rotary driving motor arranged on the base, a clamping rotary driving belt wheel fixedly arranged on an output shaft of the clamping rotary driving motor, a clamping rotary driven belt wheel fixedly arranged on the clamping rotary shaft, and a clamping rotary V-belt arranged on the clamping rotary driving belt wheel and the clamping rotary driven belt wheel in a transmission sleeve manner.

Furthermore, the tight mechanism in top sets up the tight balladeur train in top on the tight track in top, sets up the tight subassembly in top on the tight balladeur train in top along the horizontal direction including sliding, be equipped with the fastening adjusting part that is used for making the two fixed connection between the tight balladeur train in top and the base.

Further, the tight subassembly in top includes and sets up the fixed cylinder on the tight balladeur train in top along the horizontal direction, it sets up the traveller to slide in the fixed cylinder, the traveller slides along the length direction of fixed cylinder, the one end that the traveller is close to the unit head mechanism is rotated and is set up the tight conical head in top, the screw hole is seted up along the length direction of traveller to the other end of traveller, screw hole internal thread suit screw rod, the screw rod rotates with the inside wall of fixed cylinder to be connected, the fixed cover of one end that the fixed cylinder was kept away from to the screw rod establishes the carousel, be equipped with between fixed cylinder and the traveller and be used for making the fixed regulating member of the two fixed connection.

Further, the polishing mechanism comprises a polishing sliding frame arranged on the polishing track in a sliding manner, a polishing wheel assembly rotatably arranged on the polishing sliding frame and used for polishing the outer side wall of the centering cylinder, a polishing rotary driving assembly arranged on the polishing sliding frame and used for driving the polishing wheel assembly to rotate, and a polishing sliding driving assembly arranged between the polishing sliding frame and the base and used for driving the polishing sliding frame to slide on the polishing track.

Furthermore, the polishing wheel assembly comprises a polishing rotating shaft which is arranged along the horizontal direction and is rotationally connected with the polishing sliding frame, and a polishing wheel body which is fixedly sleeved at one end of the polishing rotating shaft;

the polishing rotary driving component is in transmission connection with the polishing rotating shaft and is used for driving the polishing rotating shaft to rotate by taking the central axis of the polishing rotating shaft as a center.

Furthermore, the polishing sliding driving assembly comprises a rack arranged on the base along the length direction of the polishing track, a polishing sliding driving motor arranged on the polishing sliding frame, and a gear fixedly sleeved on an output shaft of the polishing sliding driving motor and meshed with the rack.

Furthermore, the polishing machine also comprises a dust removing mechanism, wherein the dust removing mechanism comprises a dust remover, a dust hood connected with the polishing mechanism and a dust removing pipe arranged between the dust remover and the dust hood.

The above technical scheme of the utility model at least including following beneficial effect:

1. the utility model has simple structure, convenient use, a power head mechanism and a jacking mechanism, a middle cylinder clamped tightly by resultant force and driven to rotate by taking the central axis as the center, a polishing mechanism, which slides along the length direction of the middle cylinder and simultaneously carries out uniform polishing treatment on the outer side wall of the middle cylinder in rotation, close matching, uniform polishing, good polishing effect and high efficiency;

2. one end of the middle cylinder is clamped by the three-jaw chuck, the other end of the middle cylinder is tightly propped by the propping conical head, and the clamping rotary driving motor works to drive the three-jaw chuck to drive the middle cylinder to rotate together;

3. the polishing sliding driving motor works to drive the gear to rotate, the gear is meshed with the rack to drive the polishing sliding frame to slide on the polishing track, so that the polishing wheel assembly can polish the middle cylinder along the circumferential direction of the middle cylinder due to the self-rotation of the middle cylinder and can polish the middle cylinder along the length direction of the middle cylinder due to the sliding of the polishing sliding frame on the polishing track, the full coverage of a polishing range is ensured, and the situation of local omission is avoided.

Drawings

Fig. 1 is a schematic structural view of an automatic outer circle polishing machine according to an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is an enlarged schematic view of portion A of FIG. 1;

FIG. 4 is an enlarged schematic view of portion B of FIG. 1;

fig. 5 is a schematic structural view of an automatic outer circle polishing machine according to another embodiment of the present invention.

In the figure:

1. a chassis; 11. a base, 12 and a jacking track; 13. polishing the rail;

2. a power head mechanism;

21. a fixed mount;

22. a clamping assembly; 221. a three-jaw chuck; 222. clamping the rotating shaft;

23. a clamping rotation drive assembly; 231. a clamping rotation driving motor; 232. clamping a rotary driving belt pulley; 233. clamping the rotating V-belt; 234. clamping and rotating the driven pulley;

3. a jacking mechanism;

31. tightly pushing the sliding frame; 311. tightly pushing the sliding seat; 312. tightly pushing the sliding block; 313. tightly propping the mounting seat;

32. jacking the assembly; 321. a fixed cylinder; 322. a traveler; 323. a screw; 324. a turntable; 325. tightly pushing the conical head;

4. a polishing mechanism;

41. a polishing carriage; 411. polishing the mounting seat; 412. polishing the sliding seat; 413. polishing the slide block;

42. a polishing wheel assembly; 421. a polishing wheel body; 422. polishing the rotating shaft;

43. polishing the sliding drive assembly; 431. polishing the sliding drive motor; 432. a gear; 433. a rack;

44. polishing the rotary drive assembly; 441. polishing the rotary drive motor; 442. polishing the rotating driving pulley; 443. polishing the rotating V-belt; 444. polishing the rotary driven pulley;

5. a dust removal mechanism; 51. a dust cage; 52. a dust removal pipe; 53. a dust remover.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying fig. 1-5 of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.

An automatic cylindrical polishing machine comprising:

the polishing device comprises a base frame 1, wherein the base frame 1 comprises a base 11 arranged along the horizontal direction, a jacking rail 12 arranged on the base 11 along the length direction of the base 11, and a polishing rail 13 arranged on the base 11 and parallel to the jacking rail 12;

the power head mechanism 2 is arranged on the base 11 and located at one end of the abutting track 12, and the power head mechanism 2 is used for horizontally clamping the middle cylinder and driving the middle cylinder to rotate around the central axis of the middle cylinder;

the jacking mechanism 3 is arranged on the jacking track 12 in a sliding mode, and the jacking mechanism 3 is matched with the power head mechanism 2 to clamp the middle cylinder;

and the polishing mechanism 4 is arranged on the polishing track 13 in a sliding manner, and the polishing mechanism 4 is used for polishing the outer side wall of the middle cylinder in rotation.

Specifically, as shown in fig. 1-2, an automatic cylindrical polishing machine includes: the polishing machine comprises a chassis 1, wherein the chassis 1 comprises a base 11 arranged along the horizontal direction, a jacking rail 12 arranged at the top of the base 11 along the length direction of the base 11, and a polishing rail 13 arranged at the top of the base 11 and parallel to the jacking rail 12, and the polishing rail 13 is positioned at the front side of the jacking rail 12; the power head mechanism 2 is arranged at the left end of the top of the base 11, the power head mechanism 2 is positioned on the left side of the abutting track 12, and the power head mechanism 2 is used for horizontally clamping the middle cylinder and driving the middle cylinder to rotate by taking the central axis of the middle cylinder as the center; the jacking mechanism 3 is slidably arranged on the jacking track 12, the jacking mechanism 3 is matched with the power head mechanism 2 to clamp the middle cylinder, and the jacking mechanism 3 cannot block the middle cylinder from rotating; and the polishing mechanism 4 is arranged on the polishing track 13 in a sliding mode, and the polishing mechanism 4 is used for polishing the outer side wall of the rotating middle cylinder.

The utility model discloses simple structure, convenient to use, unit head mechanism 2 and the tight mechanism 3 tight middle cylinder of clamp that closes in top to the cylinder uses its axis to rotate as the center in the drive, and polishing mechanism 4 carries out even polishing treatment along the lateral wall of the middle cylinder in the length direction of middle cylinder in the gliding while in the pairing rotation, and the cooperation is closely, and the polishing is even, and polishing effect is good, efficient.

According to an embodiment of the present invention, as shown in fig. 1-2, the power head mechanism 2 includes a fixing frame 21 installed on the base 11, a clamping assembly 22 rotatably installed on the fixing frame 21, and a clamping rotation driving assembly 23 installed on the base 11 and used for driving the clamping assembly 22 to rotate. The clamping assembly 22 comprises a clamping rotating shaft 222 which is arranged along the horizontal direction and is rotatably connected with the fixed frame 21 through a bearing seat and a bearing, and a three-jaw chuck 221 which is fixedly connected with the right end of the clamping rotating shaft 222. The three-jaw chuck 221 is a prior art, and those skilled in the art can select a type thereof according to actual needs, which is not further described herein. The clamping rotation driving assembly 23 is in transmission connection with the clamping rotation shaft 222, and the clamping rotation driving assembly 23 is used for driving the clamping rotation shaft 222 to rotate around the central axis thereof. The holding rotation driving assembly 23 includes a holding rotation driving motor 231 mounted on the base 11, a holding rotation driving pulley 232 fixedly fitted on an output shaft of the holding rotation driving motor 231, a holding rotation driven pulley 234 fixedly fitted on the holding rotation shaft 222, and a holding rotation V-belt 233 drivingly fitted over the holding rotation driving pulley 232 and the holding rotation driven pulley 234.

The three-jaw chuck 221 can stably clamp and fix one end of the centering cylinder, the clamping rotation driving motor 231 works to drive the clamping rotating shaft 222 to rotate through the clamping rotation triangular belt 233, so that the three-jaw chuck 221 is driven to rotate, the middle cylinder is driven to rotate by taking the central axis of the middle cylinder as the center, the clamping is firm, and the driving is stable and reliable.

According to another embodiment of the present invention, as shown in fig. 4, the tightening mechanism 3 includes a tightening carriage 31 slidably mounted on the tightening rail 12, a tightening assembly 32 horizontally mounted on the tightening carriage 31, and a fastening adjustment assembly for fixedly connecting the tightening carriage 31 and the base 11. The jacking sliding frame 31 comprises a jacking sliding block 312 which is slidably mounted on the jacking track 12, a jacking sliding seat 311 which is welded at the top of the jacking sliding block 312, and a jacking mounting seat 313 which is mounted at the top of the jacking sliding seat 311, wherein a fastening adjusting component is mounted between the jacking sliding block 312 and the jacking sliding track, and the fastening adjusting component can be a bolt-nut component which is mounted between the jacking sliding block 312 and the jacking sliding track in a penetrating manner. The tight subassembly 32 in top of tight mount pad 313 is installed in top includes and installs the fixed section of thick bamboo 321 at the top of tight mount pad 313 in top along the horizontal direction, sliding sleeve dress traveller 322 in the fixed section of thick bamboo 321, the spout has been seted up along the length of traveller 322 on the lateral wall of traveller 322, be connected with the slide bar that inserts in the spout on the fixed section of thick bamboo 321, the slide bar can freely slide at the spout, make traveller 322 slide along the length direction of fixed section of thick bamboo 321 in only fixed section of thick bamboo 321, and can not rotate. The left end of the sliding column 322 is rotatably sleeved with a tightening conical head 325 through a bearing, and the tip of the tightening conical head 325 points to the left side. The right end of the sliding column 322 is provided with a threaded hole along the length direction of the sliding column 322, a screw 323 is sleeved in the threaded hole, the right end of the outer side wall of the screw 323 is smooth and is rotatably connected with the right end of the inner side wall of the fixed cylinder 321 through a bearing, the right end of the screw 323 is connected with the turntable 324 through bolt installation, a fixed adjusting member for fixedly connecting the fixed cylinder 321 and the sliding column 322 is installed between the fixed cylinder 321 and the sliding column 322, and the fixed adjusting member can be a bolt which is arranged between the fixed cylinder 321 and the sliding column 322 in a penetrating mode.

After the three-jaw chuck 221 clamps the left end of the middle cylinder, the jacking sliding seat 311 is pushed to enable the jacking sliding block 312 to slide on the jacking track 12 from right to left, after the jacking conical head 325 jacks the right end center hole of the middle cylinder, the jacking sliding block 312 is fixed with the jacking track 12, the jacking sliding block 312 is prevented from easily sliding on the jacking track 12, the rotary table 324 is manually rotated, the driving screw 323 rotates around the central axis of the driving screw, the driving sliding column 322 slides to left in the fixed cylinder 321, and the jacking conical head 325 jacks the right end center hole of the middle cylinder, so that the purpose of firmly fixing the middle cylinder and preventing the middle cylinder from freely rotating is achieved. The jacking operation is convenient and fast, and the jacking effect is good.

In an embodiment of the present invention, as shown in fig. 3, the polishing mechanism 4 includes a polishing carriage 41 slidably mounted on the polishing rail 13, a polishing wheel assembly 42 rotatably mounted on the polishing carriage 41 and used for polishing the outer sidewall of the centering cylinder, a polishing rotary driving assembly 44 mounted on the polishing carriage 41 and used for driving the polishing wheel assembly 42 to rotate, and a polishing sliding driving assembly 43 mounted between the polishing carriage 41 and the base 11 and used for driving the polishing carriage 41 to slide on the polishing rail 13. The polishing carriage 41 includes a polishing slider 413 slidably fitted over the polishing rail 13, a polishing slide 412 welded on top of the polishing slider 413, and a polishing mount 411 mounted on top of the polishing slide 412. The polishing wheel assembly 42 includes a polishing shaft 422 disposed in a horizontal direction and rotatably connected to the polishing mounting seat 411 through a bearing seat and a bearing, and a polishing wheel body 421 fixedly fitted to a left end of the polishing shaft 422. The polishing rotary driving assembly 44 is in transmission connection with the polishing rotating shaft 422, and the polishing rotary driving assembly 44 is used for driving the polishing rotating shaft 422 to rotate around the central axis thereof. The polishing rotary drive assembly 44 includes a polishing rotary drive motor 441 mounted on the polishing mount 411, a polishing rotary driving pulley 442 fixedly fitted on an output shaft of the polishing rotary drive motor 441, a polishing rotary driven pulley 444 fixedly fitted on the polishing rotary shaft 422, and a polishing rotary v-belt 443 drivingly fitted over the polishing rotary driving pulley 442 and the polishing rotary driven pulley 444. The polishing rotary driving motor 441 works to drive the polishing rotating shaft 422 to rotate, so as to drive the polishing wheel body 421 to rotate, and the driving is stable and reliable. The polishing slide driving assembly 43 includes a rack 433 mounted on the base 11 along the length direction of the polishing rail 13, a polishing slide driving motor 431 mounted on the polishing slide 412, and a gear 432 fixedly mounted on an output shaft of the polishing slide driving motor 431 and engaged with the rack 433. The polishing sliding driving motor 431 works to drive the gear 432 to rotate, and the gear 432 is meshed with the rack 433, so that the polishing slide block 413 slides on the polishing track 13, and the driving is stable and reliable. The polishing rotary driving motor 441 works to drive the polishing rotating shaft 422 to rotate, so that the polishing wheel body 421 is driven to rotate, and the driving is stable and reliable.

When the three-jaw chuck 221 clamps the left end of the middle cylinder, the tightening conical head 325 tightens the right end of the middle cylinder, and the clamping rotary driving motor 231 works to drive the horizontally arranged middle cylinder to rotate around the central axis thereof, the polishing rotary driving motor 441 works, the polishing wheel body 421 rotates to polish the outer side wall of the rotating middle cylinder along the circumferential direction of the middle cylinder, the polishing sliding driving motor 431 works to drive the polishing sliding block 413 to slide on the polishing rail 13 to drive the polishing wheel body 421 to move along the length direction of the middle cylinder, and the outer side wall of the middle cylinder is polished along the length direction of the middle cylinder. The polishing range is ensured to be fully covered, and the condition of local omission does not occur on the outer side wall of the middle cylinder.

In another embodiment of the present invention, as shown in fig. 5, the polishing wheel further comprises a dust removing mechanism 5, wherein the dust removing mechanism 5 comprises a dust remover 53, a dust collecting cover 51 covering the outside of the polishing wheel body 421, and a dust removing pipe 52 installed between the dust remover 53 and the dust collecting cover 51. The dust remover 53 is the prior art, and those skilled in the art can select a specific brand and model of the dust remover 53 according to actual needs, which are not further described herein. The dust remover 53 can achieve the purpose of collecting and processing the waste materials generated by polishing, avoid the waste materials from splashing and accidentally injuring workers, avoid environmental pollution, and is safer and more environment-friendly.

The utility model discloses a theory of operation: the left end of the centering cylinder is stably clamped and fixed by the three-jaw chuck 221. Then, the jacking sliding seat 311 is pushed, so that the jacking sliding block 312 slides on the jacking track 12 from right to left, after the jacking conical head 325 jacks the right end center hole of the middle cylinder, the jacking sliding block 312 and the jacking track 12 are fixed, the situation that the jacking sliding block 312 slides on the jacking track 12 easily is avoided, the rotary table 324 is rotated manually, the driving screw 323 rotates by taking the central axis thereof as the center, the driving sliding column 322 slides to left in the fixed cylinder 321, so that the jacking conical head 325 jacks the right end center hole of the middle cylinder, the purpose of firmly fixing the middle cylinder is achieved, the jacking operation is convenient and fast, and the jacking effect is good. Then, the clamping rotation driving motor 231 is turned on, and the clamping rotation shaft 222 is driven to rotate by the clamping rotation triangular belt 233, so that the three-jaw chuck 221 is driven to rotate, the middle cylinder is driven to rotate around the central axis thereof, and the driving is stable and reliable, and the rotation is smooth. Then, the polishing slide driving motor 431 is started to drive the polishing slide block 413 to slide leftwards on the polishing track 13, and the polishing slide block stops after sliding to the leftmost end of the middle cylinder. Then, the polishing rotary drive motor 441 is turned on to drive the polishing wheel body 421 to rotate, and the outer side wall of the rotating middle cylinder is polished in the circumferential direction of the middle cylinder. Meanwhile, the polishing slide driving motor 431 is turned on to drive the polishing slider 413 to slide rightward on the polishing rail 13, and the outer side wall of the middle cylinder is subjected to polishing treatment from left to right along the length direction of the middle cylinder. The polishing range is ensured to be fully covered, and the condition of local omission does not occur on the outer side wall of the middle cylinder. When polishing is handled, dust remover 53 can reach the purpose of collecting the processing to the waste material that the polishing produced, avoids the waste material to splash and accidentally injures the staff, avoids the polluted environment, and is safer, environmental protection.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides an automatic burnishing machine of excircle which characterized in that includes:

the polishing device comprises a bottom frame (1), wherein the bottom frame (1) comprises a base (11) arranged along the horizontal direction, a jacking track (12) arranged on the base (11) along the length direction of the base (11), and a polishing track (13) which is arranged on the base (11) and is parallel to the jacking track (12);

the power head mechanism (2) is arranged on the base (11) and is positioned at one end of the jacking track (12), and the power head mechanism (2) is used for horizontally clamping the middle cylinder and driving the middle cylinder to rotate by taking the central axis of the middle cylinder as a center;

the jacking mechanism (3) is arranged on the jacking track (12) in a sliding mode, and the jacking mechanism (3) is matched with the power head mechanism (2) to clamp the middle cylinder;

the polishing mechanism (4) is arranged on the polishing track (13) in a sliding mode, and the polishing mechanism (4) is used for polishing the outer side wall of the middle cylinder in rotation.

2. The automatic outer circle polishing machine according to claim 1, wherein the power head mechanism (2) comprises a fixing frame (21) arranged on the base (11), a clamping assembly (22) rotatably arranged on the fixing frame (21), and a clamping rotary driving assembly (23) arranged on the base (11) and used for driving the clamping assembly (22) to rotate.

3. The automatic outer circle polishing machine according to claim 2, wherein the clamping assembly (22) comprises a clamping rotating shaft (222) which is arranged along the horizontal direction and is rotatably connected with the fixed frame (21), and a three-jaw chuck (221) which is fixedly connected with one end of the clamping rotating shaft (222) close to the jacking mechanism (3);

the clamping rotary driving assembly (23) is in transmission connection with the clamping rotating shaft (222), and the clamping rotary driving assembly (23) is used for driving the clamping rotating shaft (222) to rotate around the central axis of the clamping rotating shaft.

4. The automatic external circular polishing machine according to claim 3, wherein the clamping rotary driving assembly (23) comprises a clamping rotary driving motor (231) disposed on the base (11), a clamping rotary driving pulley (232) fixedly sleeved on an output shaft of the clamping rotary driving motor (231), a clamping rotary driven pulley (234) fixedly sleeved on the clamping rotating shaft (222), and a clamping rotary V-belt (233) drivingly sleeved on the clamping rotary driving pulley (232) and the clamping rotary driven pulley (234).

5. The automatic outer circle polishing machine according to claim 1, wherein the tightening mechanism (3) comprises a tightening carriage (31) slidably arranged on the tightening rail (12), and a tightening assembly (32) horizontally arranged on the tightening carriage (31), and a fastening adjusting assembly for fixedly connecting the tightening carriage (31) and the base (11) is arranged between the tightening carriage (31) and the base.

6. The automatic outer circle polishing machine according to claim 5, wherein the tightening assembly (32) comprises a fixed cylinder (321) which is horizontally arranged on the tightening sliding frame (31), a sliding column (322) is slidably arranged in the fixed cylinder (321), the sliding column (322) slides along the length direction of the fixed cylinder (321), one end of the sliding column (322) close to the power head mechanism (2) is rotatably provided with a tightening conical head (325), the other end of the sliding column (322) is provided with a threaded hole along the length direction of the sliding column (322), the threaded hole is internally sleeved with a screw rod (323), the screw rod (323) is rotatably connected with the inner side wall of the fixed cylinder (321), one end of the screw rod (323) far away from the fixed cylinder (321) is fixedly sleeved with a turntable (324), and a fixed adjusting member for fixedly connecting the fixed cylinder (321) and the sliding column (322) is arranged between the fixed cylinder (321) and the sliding column (322).

7. The automatic external circular polishing machine according to claim 1, wherein the polishing mechanism (4) comprises a polishing carriage (41) slidably disposed on the polishing track (13), a polishing wheel assembly (42) rotatably disposed on the polishing carriage (41) for polishing the outer side wall of the centering cylinder, a polishing rotary drive assembly (44) disposed on the polishing carriage (41) for driving the polishing wheel assembly (42) to rotate, and a polishing slide drive assembly (43) disposed between the polishing carriage (41) and the base (11) for driving the polishing carriage (41) to slide on the polishing track (13).

8. The automatic cylindrical polishing machine according to claim 7, wherein the polishing wheel assembly (42) comprises a polishing rotating shaft (422) arranged along the horizontal direction and rotatably connected with the polishing carriage (41), and a polishing wheel body (421) fixedly sleeved on one end of the polishing rotating shaft (422);

the polishing rotary driving assembly (44) is in transmission connection with the polishing rotating shaft (422), and the polishing rotary driving assembly (44) is used for driving the polishing rotating shaft (422) to rotate around the central axis thereof.

9. The automatic outer circle polishing machine according to claim 7, wherein the polishing slide driving assembly (43) comprises a rack (433) provided on the base (11) along a length direction of the polishing rail (13), a polishing slide driving motor (431) provided on the polishing carriage (41), and a gear (432) fixedly sleeved on an output shaft of the polishing slide driving motor (431) and engaged with the rack (433).

10. The automatic external circle polishing machine according to any one of claims 1 to 9, further comprising a dust removing mechanism (5), wherein the dust removing mechanism (5) comprises a dust remover (53), a dust collection cover (51) connected with the polishing mechanism (4), and a dust removing pipe (52) arranged between the dust remover (53) and the dust collection cover (51).

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