CN113427384A

CN113427384A - A accurate burnishing device for auto-parts

Info

Publication number: CN113427384A
Application number: CN202110986352.9A
Authority: CN
Inventors: 刘泽育
Original assignee: Haimen Xietong Precision Machinery Manufacturing Co ltd
Current assignee: Haimen Xietong Precision Machinery Manufacturing Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2021-09-24
Anticipated expiration: 2041-08-26
Also published as: CN113427384B

Abstract

The invention discloses a precision polishing device for automobile parts, wherein a gap between a first fixing ring and a second fixing ring is a limiting annular groove, the upper end of the second fixing ring is connected with an adjusting structure, the outer parts of the limiting polishing structure and the adjusting structure are provided with outer cylinders, the outer cylinders are connected with a top cylinder, and the lower end of each outer cylinder is provided with a lifting operation platform; the invention discloses a precise polishing device for automobile parts, which belongs to the field of polishing devices.

Description

A accurate burnishing device for auto-parts

Technical Field

The invention relates to the field of polishing devices, in particular to a precise polishing device for automobile parts.

Background

The automobile polishing is that in the automobile cosmetic process, the automobile is polished for one time when waxing, glazing or coating, fine defects of paint film surfaces such as coarse grains, sand paper marks, flow marks, white reflection, orange peel and the like can appear on the surface of the automobile after spraying, and in order to make up for the defects, the automobile polishing is usually carried out after spraying to improve the mirror surface effect of the paint film and achieve the requirements of brightness, smoothness and gorgeous;

in the automobile shell polishing process, because the automobile shell is in the arc-shaped arrangement, the existing polishing adopts manual work to polish the automobile shell, the efficiency is low, and when equipment is adopted to polish the automobile shell, the polishing disc cannot be effectively adjusted along with the arc surface of the automobile shell, so that the polishing effect is poor.

Disclosure of Invention

Technical problem to be solved

The invention mainly aims to provide a precise polishing device for automobile parts, which solves the problem that a polishing disc cannot be effectively adjusted along with the arc surface of an automobile shell.

(II) technical scheme

In order to solve the technical problems, the invention provides a precision polishing device for automobile parts, which comprises a limiting type polishing structure, a top barrel and a top cover, wherein the top cover is arranged at an opening at the upper end of the top barrel, an I-shaped guide rail is arranged at the lower end of the top cover, the limiting type polishing structure comprises a driving motor and a polishing disc, a sliding block at the lower end of the guide rail is connected with the driving motor, the lower end of the driving motor is connected with the polishing disc, the limiting type polishing structure further comprises a first fixing ring, a first connecting ring, a first T-shaped key, a second fixing ring, a second connecting ring, a second T-shaped key, a limiting strip, a first spring, a second spring, a first waist hole, a second waist hole, a connecting rod and a limiting disc, the lower end of the driving motor is connected with the connecting rod, two limiting discs are sleeved on the rod body of the connecting rod, and the limiting strip is arranged between the two limiting discs, a second waist hole is arranged in the middle of the end face of the limiting strip, the connecting rod penetrates through the second waist hole to be movably connected with the polishing disc, a first waist hole is arranged at the edge of the end face of the limiting strip, a first spring is arranged at the edge of the upper end of the limiting strip, a second spring is arranged at the edge of the lower end of the limiting strip, a first fixing ring is arranged below the limiting strip, a first connecting ring is arranged at the upper end of the first fixing ring, a first T-shaped key is arranged at the position of an annular groove formed in the end face of the first connecting ring, the first T-shaped key is connected with the second spring, a second fixing ring is arranged above the limiting strip, a second connecting ring is arranged at the lower end of the second fixing ring, a second T-shaped key is arranged at the position of the annular groove formed in the lower end of the second connecting ring, the second T-shaped key is connected with the first spring, and a limiting annular groove is formed in the gap between the first fixing ring and the second fixing ring, the upper end of the second fixing ring is connected with an adjusting structure, the outer parts of the limiting type polishing structure and the adjusting structure are provided with outer cylinders, the outer cylinders are connected with the top cylinder, the lower end of the outer cylinders is provided with a lifting type operating platform, the polishing disc is connected with the connecting rod through a rotating shaft, the adjusting structure comprises a first mounting ring, a second mounting ring, a movable head, a wire guide hole, a first electric push rod and a limiting head, the second mounting ring is arranged above the first mounting ring, a gap is formed between the second mounting ring and the first mounting ring, the movable head is arranged between the second mounting ring and the first mounting ring, the end face of the movable head is provided with the wire guide hole, the lower end of the movable head is connected with a first electric push rod, the lower end of the first electric push rod is connected with the limiting head, the first mounting ring is fixedly connected with a second fixing ring, and the first mounting ring and the second mounting ring are movably arranged with the movable head, and the movable head is smooth with first collar and second collar contact end, movable head and first electric putter bolt fastening, and first electric putter afterbody wire inserts into the wire guide, first electric putter and spacing head bolt fastening, and spacing head inserts into first waist hole, spacing head and spacing swing joint, spacing strip holding down distance of regulation that first electric putter can be accurate realizes that spacing strip one is high one and one is low to be set up, connecting rod and polishing dish swing joint, and spacing strip one is high one and one extrudees the polishing dish upper end when low, and the polishing dish inclines, and the polishing dish contacts with automobile shell.

Preferably, the first T-shaped key and the second T-shaped key have the same structure, a T-shaped ring groove formed in the first connecting ring and the first fixing ring is matched with the first T-shaped key, the contact end of the first T-shaped key with the first connecting ring and the first fixing ring is smooth, the first T-shaped key is fixedly connected with the second spring, the second T-shaped key is fixedly connected with the first spring, and the connecting rod is matched with the second waist hole;

preferably, the connecting rod is movably connected with the limiting disc, a gap is formed between the end face of the limiting disc and the limiting strip, and two ends of the limiting strip rotate along the limiting annular groove;

preferably, the outer cylinder comprises a first cylinder body, a first supporting ring, a wire guide groove, a second supporting ring, a third supporting ring and a transparent cover, the first supporting ring is arranged at the upper end of the first cylinder body, the wire guide groove is formed between the first cylinder body and the first supporting ring, the second supporting ring is arranged at the lower end of the first cylinder body, the third supporting ring is arranged below the second supporting ring, the transparent cover is arranged at a cavity between the second supporting ring and the third supporting ring, the second supporting ring and the third supporting ring are matched with the transparent cover, the second supporting ring and the first cylinder body are welded and fixed, and the first cylinder body and the first supporting ring are fixed through the supporting blocks;

preferably, the lifting type operating platform comprises a cross-shaped placing frame, a sliding groove, a sliding block, a jacking rod, a second electric push rod and a circular table cover, the cross-shaped placing frame is arranged below the polishing disc, the sliding groove is formed in the end face of the cross-shaped placing frame, the sliding block is arranged in the sliding groove, the upper end of the sliding block is connected with an automobile shell clamp, the lower end of the cross-shaped placing frame is connected with the jacking rod, the lower end of the jacking rod is connected with the second electric push rod, and the rod body of the jacking rod is sleeved with the circular table cover;

preferably, the disc at the upper end of the jacking rod is fixedly connected with the cross-shaped placing frame, the jacking rod is in threaded connection with the circular truncated cone cover, and the sliding block slides along the sliding groove.

(III) advantageous effects

The technical scheme of the invention has the following advantages:

the invention provides a precision polishing device for automobile parts, a limiting strip, a spring, a T-shaped key and a connecting ring are mutually matched, the end head of the limiting strip can rotate along a limiting ring groove, a waist hole formed in the limiting strip is matched with a connecting rod and a limiting disc, the limiting connection between the limiting strip and the connecting rod can be realized, the connecting rod can move along a second waist hole, a first waist hole formed in the limiting strip is matched with a first electric push rod and a limiting head of an adjusting structure, the first electric push rod is movably connected with the limiting strip through the limiting head, the first electric push rod can accurately adjust the pressing distance of the limiting strip, the high-low setting of the limiting strip is realized, and the limiting setting of the connecting rod can be realized through the arrangement of two limiting discs of a connecting rod body, because the connecting rod is movably connected with the polishing disc, the upper ends of the polishing discs are extruded when the limiting strip is high-low, so as to realize the inclination of the polishing discs, realize polishing dish and automobile casing and contact, can adjust according to the automobile casing cambered surface, spout and the slider that over-and-under type operation panel was seted up make things convenient for automobile casing to install, and then make things convenient for the polishing of polishing dish, the cross rack gap department piece or the outflow of flowing water can be realized to the round platform cover, promote out bits speed to a certain extent, urceolus and regulation structure, spacing type polishing structure and over-and-under type operation panel are mutually supported, the polishing situation is conveniently observed to the translucent cover, the barrel can be realized the connection of solid fixed ring and support ring, the wire casing stretches out with making things convenient for first electric putter wire.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the overall structure of the present invention;

FIG. 3 is an exploded view of the outer barrel of the present invention;

FIG. 4 is an exploded view of the limiting type polishing structure and the adjustment structure of the present invention;

FIG. 5 is an exploded view of a stop type polishing structure according to the present invention;

FIG. 6 is a schematic view of a spacing bar and connecting rod of the present invention;

FIG. 7 is an exploded view of the adjustment mechanism of the present invention;

fig. 8 is an exploded view of the lift-type console of the present invention.

In the figure: 1. an outer cylinder; 101. a first cylinder; 102. a first support ring; 103. a wire guide groove; 104. a second support ring; 105. a third support ring; 106. a transparent cover; 2. a limiting type polishing structure; 201. a first retaining ring; 202. a first connecting ring; 203. a first T-shaped key; 204. a second retaining ring; 205. a second connection ring; 206. a second T-shaped bond; 207. a drive motor; 208. a polishing disk; 209. a limiting strip; 210. a first spring; 211. a second spring; 212. a first waist hole; 213. a second waist hole; 214. a connecting rod; 215. a limiting disc; 3. an adjustment structure; 301. a first mounting ring; 302. a second mounting ring; 303. a movable head; 304. a wire guide hole; 305. a first electric push rod; 306. a limiting head; 4. a lifting operation platform; 401. a cross-shaped placing rack; 402. a chute; 403. a slider; 404. a jacking rod; 405. a second electric push rod; 406. a circular truncated cone cover; 5. a top cylinder; 6. and a top cover.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 8, a precision polishing apparatus for automobile parts includes a limiting type polishing structure 2, a top barrel 5 and a top cover 6, wherein the top cover 6 is arranged at an opening at the upper end of the top barrel 5, an i-shaped guide rail is mounted at the lower end of the top cover 6, the limiting type polishing structure 2 includes a driving motor 207 and a polishing disc 208, a sliding block at the lower end of the guide rail is connected with the driving motor 207, and the lower end of the driving motor 207 is connected with the polishing disc 208;

the limiting type polishing structure 2 further comprises a first fixing ring 201, a first connecting ring 202, a first T-shaped key 203, a second fixing ring 204, a second connecting ring 205, a second T-shaped key 206, a limiting strip 209, a first spring 210, a second spring 211, a first waist hole 212, a second waist hole 213, a connecting rod 214 and a limiting disc 215, the lower end of the driving motor 207 is connected with the connecting rod 214, the rod body of the connecting rod 214 is sleeved with the two limiting discs 215, the limiting strip 209 is arranged between the two limiting discs 215, the middle part of the end surface of the limiting strip 209 is provided with the second waist hole 213, the connecting rod 214 penetrates through the second waist hole 213 to be movably connected with the polishing disc 208, the end surface edge of the limiting strip 209 is provided with the first waist hole 212, the upper end edge of the limiting strip 209 is provided with the first spring 210, the lower end edge of the limiting strip 209 is provided with the second spring 211, the first fixing ring 201 is arranged below the limiting strip 209, and the upper end of the first fixing ring 201 is provided with the first connecting ring 202, the annular groove is formed in the end face of the first connecting ring 202, a first T-shaped key 203 is arranged, the first T-shaped key 203 is connected with a second spring 211, a second fixing ring 204 is arranged above the limiting strip 209, a second connecting ring 205 is arranged at the lower end of the second fixing ring 204, a second T-shaped key 206 is arranged at the annular groove formed in the lower end of the second connecting ring 205, the second T-shaped key 206 is connected with a first spring 210, a gap between the first fixing ring 201 and the second fixing ring 204 is a limiting annular groove, an adjusting structure 3 is connected to the upper end of the second fixing ring 204, outer barrels 1 are arranged outside the limiting polishing structure 2 and the adjusting structure 3, the outer barrels 1 are connected with a top barrel 5, a lifting operating table 4 is arranged at the lower end of the outer barrel 1, and a polishing disc 208 and a connecting rod 214 are connected through a rotating.

In a further preferable scheme of the invention, the first T-shaped key 203 and the second T-shaped key 206 have the same structure, the T-shaped ring grooves formed on the first connecting ring 202 and the first fixing ring 201 are matched with the first T-shaped key 203, the contact end of the first T-shaped key 203 with the first connecting ring 202 and the first fixing ring 201 is smooth, the first T-shaped key 203 is fixedly connected with the second spring 211, the second T-shaped key 206 is fixedly connected with the first spring 210, the connecting rod 214 is matched with the second waist hole 213, the connecting rod 214 is movably connected with the limiting disc 215, the end surface of the limiting disc 215 has a gap with the limiting strip 209, the two ends of the limiting strip 209 rotate along the limiting ring grooves,

the adjusting structure 3 comprises a first mounting ring 301, a second mounting ring 302, a movable head 303, a wire guide hole 304, a first electric push rod 305 and a limiting head 306, wherein the second mounting ring 302 is arranged above the first mounting ring 301, a gap is formed between the second mounting ring 302 and the first mounting ring 301, the movable head 303 is arranged between the second mounting ring 302 and the first mounting ring 301, the wire guide hole 304 is formed in the end surface of the movable head 303, the lower end of the movable head 303 is connected with the first electric push rod 305, the lower end of the first electric push rod 305 is connected with the limiting head 306, the first mounting ring 301 is fixedly connected with the second fixing ring 204, the first mounting ring 301 and the second mounting ring 302 are movably arranged with the movable head 303, the contact end of the movable head 303 with the first mounting ring 301 and the second mounting ring 302 is smooth, the movable head 303 is fixed with the first electric push rod 305 by bolts, and a lead at the tail of the first electric push rod 305 is inserted into the wire guide hole 304, the first electric push rod 305 is fixed with a limiting head 306 through a bolt, the limiting head 306 is inserted into the first waist hole 212, the limiting head 306 is movably connected with a limiting strip 209, the limiting strip 209, a spring, a T-shaped key and a connecting ring are mutually matched, the end of the limiting strip 209 can rotate along a limiting annular groove, the waist hole formed in the limiting strip 209 is matched with the connecting rod 214 and the limiting disc 215, the limiting connection between the limiting strip 209 and the connecting rod 214 can be realized, the connecting rod 214 can move along a second waist hole 213, the first waist hole 212 formed in the limiting strip 209 is matched with the first electric push rod 305 and the limiting head 306 of the adjusting structure 3, the first electric push rod 305 is movably connected with the limiting strip 209 through the limiting head 306, the first electric push rod 305 can accurately adjust the pressing distance of the limiting strip 209, the high-low setting of the limiting strip 209 is realized, and then through the setting of the two limiting discs 215 on the connecting rod 214, the limiting disc 215 can move to the upper end of the polishing disc 208, the limit strip 209 is contacted with the upper end of the polishing disc 208, the limit arrangement of the connecting rod 214 can be realized, the connecting rod 214 is movably connected with the polishing disc 208, the limit strip 209 presses the upper end of the polishing disc 208 when the limiting strip 209 is higher or lower, the polishing disc 208 is further inclined, the polishing disc 208 is contacted with the automobile shell, the adjustment can be carried out according to the arc surface of the automobile shell,

the lifting operation platform 4 comprises a cross-shaped placing frame 401, a sliding groove 402, a sliding block 403, a lifting rod 404, a second electric push rod 405 and a circular truncated cone cover 406, the cross-shaped placing frame 401 is arranged below the polishing disc 208, the sliding groove 402 is formed in the end face of the cross-shaped placing frame 401, the sliding block 403 is arranged in the sliding groove 402, an automobile shell clamp is connected to the upper end of the sliding block 403, the lifting rod 404 is connected to the lower end of the cross-shaped placing frame 401, the second electric push rod 405 is connected to the lower end of the lifting rod 404, the circular truncated cone cover 406 is sleeved on the rod body of the lifting rod 404, the circular disc at the upper end of the lifting rod 404 is fixedly connected with the cross-shaped placing frame 401, the lifting rod 404 is in threaded connection with the circular truncated cone cover 406, the sliding block 403 slides along the sliding groove 402, the sliding groove 402 and the sliding block 403 which are formed in the lifting operation platform 4 facilitate the installation of an automobile shell, further facilitate the polishing of the polishing disc 208, the outflow of chippings or running water at the gaps of the cross-shaped placing frame 401 can be realized by the circular truncated cone cover 406, the chip rate is improved to a certain extent;

in a further preferred embodiment of the present invention, the outer cylinder 1 includes a first cylinder 101, a first supporting ring 102, a wire guide groove 103, a second supporting ring 104, a third supporting ring 105 and a transparent cover 106, the first supporting ring 102 is disposed at the upper end of the first cylinder 101, the wire guide groove 103 is disposed between the first cylinder 101 and the first supporting ring 102, the second supporting ring 104 is disposed at the lower end of the first cylinder 101, the third supporting ring 105 is disposed below the second supporting ring 104, the transparent cover 106 is disposed in a cavity between the second supporting ring 104 and the third supporting ring 105, the second supporting ring 104 and the third supporting ring 105 are adapted to the transparent cover 106, the second supporting ring 104 is welded and fixed to the first cylinder 101, the first cylinder 101 and the first supporting ring 102 are fixed by a supporting block, the adjusting structure 3 includes a first mounting ring 301, a second mounting ring 302, a movable head 303, a wire guide hole 304, a first electric push rod 305 and a position-limiting head 306, a second mounting ring 302 is arranged above the first mounting ring 301, a gap is arranged between the second mounting ring 302 and the first mounting ring 301, a movable head 303 is arranged between the second mounting ring 302 and the first mounting ring 301, a wire guide hole 304 is arranged on the end surface of the movable head 303, a first electric push rod 305 is connected with the lower end of the movable head 303, a limiting head 306 is connected with the lower end of the first electric push rod 305, the first mounting ring 301 is fixedly connected with the second fixing ring 204, the first mounting ring 301, the second mounting ring 302 and the movable head 303 are movably arranged, the contact ends of the movable head 303 and the first mounting ring 301 and the second mounting ring 302 are smooth, the movable head 303 and the first electric push rod 305 are fixed by bolts, a wire at the tail part of the first electric push rod 305 is inserted into the wire guide hole 304, the first electric push rod 305 and the limiting head 306 are fixed by bolts, the limiting head 306 is inserted into the first waist hole 212, and the limiting head 306 is movably connected with the limiting strip 209, the lifting operation platform 4 comprises a cross-shaped placing frame 401, a sliding groove 402, a sliding block 403, a lifting rod 404, a second electric push rod 405 and a circular table cover 406, a cross-shaped placing frame 401 is arranged below the polishing disc 208, the sliding groove 402 is arranged on the end surface of the cross-shaped placing frame 401, the sliding block 403 is arranged in the groove of the sliding groove 402, the upper end of the sliding block 403 is connected with an automobile shell clamp, the lower end of the cross-shaped placing frame 401 is connected with the lifting rod 404, the lower end of the lifting rod 404 is connected with the second electric push rod 405, the rod body of the lifting rod 404 is sleeved with the circular table cover 406, the circular disc at the upper end of the lifting rod 404 is fixedly connected with the cross-shaped placing frame 401, the lifting rod 404 is in threaded connection with the circular table cover 406, the sliding block 403 slides along the sliding groove 402, the outer cylinder 1 is mutually matched with the adjusting structure 3, the limiting polishing structure 2 and the lifting operation platform 4, the transparent cover 106 is convenient for observing polishing situation, and the connection of a fixing ring and a support ring can be realized on the cylinder body, the wire guide groove 103 facilitates the wire-guiding extension of the first electric push rod 305.

The standard parts used by the invention can be purchased from the market, the special-shaped parts can be customized according to the description and the description of the attached drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a precision polishing device for auto-parts, is including spacing type polishing structure (2), top cylinder (5) and top cap (6), the upper end opening part of top cylinder (5) is provided with top cap (6), and the guide rail of I shape is installed to the lower extreme of top cap (6), spacing type polishing structure (2) are including driving motor (207) and polishing dish (208), and guide rail lower extreme sliding block is connected with driving motor (207), the lower extreme of driving motor (207) is connected with polishing dish (208), its characterized in that: the limiting type polishing structure (2) further comprises a first fixing ring (201), a first connecting ring (202), a first T-shaped key (203), a second fixing ring (204), a second connecting ring (205), a second T-shaped key (206), a limiting strip (209), a first spring (210), a second spring (211), a first waist hole (212), a second waist hole (213), a connecting rod (214) and a limiting disc (215), the lower end of the driving motor (207) is connected with the connecting rod (214), a rod body of the connecting rod (214) is sleeved with the two limiting discs (215), the limiting strip (209) is arranged between the two limiting discs (215), the second waist hole (213) is formed in the middle of the end face of the limiting strip (209), the connecting rod (214) penetrates through the second waist hole (213) to be movably connected with the polishing disc (208), the first waist hole (212) is formed in the edge of the end face of the limiting strip (209), and the upper end edge of the limit strip (209) is provided with a first spring (210), the lower end edge of the limit strip (209) is provided with a second spring (211), the lower part of the limit strip (209) is provided with a first fixing ring (201), the upper end of the first fixing ring (201) is provided with a first connecting ring (202), the end face of the first connecting ring (202) is provided with a first T-shaped key (203) at the position where the ring groove is formed, the first T-shaped key (203) is connected with the second spring (211), the upper part of the limit strip (209) is provided with a second fixing ring (204), the lower end of the second fixing ring (204) is provided with a second connecting ring (205), the lower end of the second connecting ring (205) is provided with a second T-shaped key (206), the second T-shaped key (206) is connected with the first spring (210), the gap between the first fixing ring (201) and the second fixing ring (204) is a limit ring groove, the upper end of the second fixing ring (204) is connected with an adjusting structure (3), the outer portions of the limiting type polishing structure (2) and the adjusting structure (3) are provided with an outer barrel (1), the outer barrel (1) is connected with a top barrel (5), the lower end of the outer barrel (1) is provided with a lifting type operating platform (4), the polishing disk (208) is connected with the connecting rod (214) through a rotating shaft, the adjusting structure (3) comprises a first mounting ring (301), a second mounting ring (302), a movable head (303), a wire guide hole (304), a first electric push rod (305) and a limiting head (306), the second mounting ring (302) is arranged above the first mounting ring (301), a gap is formed between the second mounting ring (302) and the first mounting ring (301), the movable head (303) is arranged between the second mounting ring (302) and the first mounting ring (301), a wire guide hole (304) is formed in the end face of the movable head (303), the lower end of the movable head (303) is connected with a first electric push rod (305), the lower end of the first electric push rod (305) is connected with a limiting head (306), a first mounting ring (301) is fixedly connected with a second fixing ring (204), the first mounting ring (301) and the second mounting ring (302) are movably arranged with the movable head (303), the contact end of the movable head (303) with the first mounting ring (301) and the second mounting ring (302) is smooth, the movable head (303) is fixed with the first electric push rod (305) through a bolt, a wire at the tail part of the first electric push rod (305) is inserted into the wire guide hole (304), the first electric push rod (305) is fixed with the limiting head (306) through a bolt, the limiting head (306) is inserted into the first waist hole (212), and the limiting head (306) is movably connected with a limiting strip (209), first electric putter (305) can be accurate adjust spacing strip distance of pushing down, realize that spacing strip (209) one is high one low to set up, connecting rod (214) and polishing dish (208) swing joint, extrusion polishing dish (208) upper end when spacing strip (209) one is high one low, polishing dish (208) slope, polishing dish (208) contact with car shell.

2. The precision polishing apparatus for automobile parts according to claim 1, characterized in that: the structure of first T type key (203) and second T type key (206) is the same, and T type annular and first T type key (203) adaptation that first connecting ring (202) and first solid fixed ring (201) were seted up, first T type key (203) are smooth with first connecting ring (202) and first solid fixed ring (201) contact end, first T type key (203) and second spring (211) fixed connection, second T type key (206) and first spring (210) fixed connection, connecting rod (214) and second waist hole (213) adaptation.

3. A precision polishing apparatus for automobile parts according to claim 2, characterized in that: the connecting rod (214) is movably connected with the limiting disc (215), a gap is formed between the end face of the limiting disc (215) and the limiting strip (209), and the two ends of the limiting strip (209) rotate along the limiting annular groove.

4. A precision polishing apparatus for automobile parts according to claim 3, characterized in that: the outer cylinder (1) comprises a first cylinder (101), a first support ring (102), a wire guide groove (103), a second support ring (104), a third support ring (105) and a transparent cover (106), the first support ring (102) is arranged at the upper end of the first cylinder (101), and a wire guide groove (103) is arranged between the first cylinder (101) and the first supporting ring (102), the lower end of the first cylinder (101) is provided with a second supporting ring (104), a third support ring (105) is arranged below the second support ring (104), a transparent cover (106) is arranged in a cavity between the second support ring (104) and the third support ring (105), the second support ring (104) and the third support ring (105) being fitted with a transparent cover (106), and the second support ring (104) is welded and fixed with the first cylinder (101), and the first cylinder (101) and the first support ring (102) are fixed through a support block.

5. The precision polishing apparatus for automobile parts according to claim 4, wherein: over-and-under type operation panel (4) are including cross rack (401), spout (402), slider (403), lifting rod (404), second electric putter (405) and round platform cover (406), and the below of polishing dish (208) is provided with cross rack (401), spout (402) have been seted up to the terminal surface of cross rack (401), and the inslot of spout (402) is provided with slider (403), the upper end of slider (403) is connected with car shell anchor clamps, the lower extreme of cross rack (401) is connected with lifting rod (404), and the lower extreme of lifting rod (404) is connected with second electric putter (405), round platform cover (406) have been cup jointed to the pole body of lifting rod (404).

6. The precision polishing apparatus for automobile parts according to claim 5, characterized in that: the disc at the upper end of the jacking rod (404) is fixedly connected with the cross-shaped placing frame (401), the jacking rod (404) is in threaded connection with the circular truncated cone cover (406), and the sliding block (403) slides along the sliding groove (402).