阅读说明：本技术 一种汽车轮毂局部矫正修复优化方法 (Automobile hub local correction repair optimization method ) 是由 郭东东 姚孝明 于 2019-09-18 设计创作，主要内容包括：本发明涉及一种汽车轮毂局部矫正修复优化方法,主要包括以下步骤：轮毂打磨,划痕填充,热焊填补,喷漆与抛光,上述轮毂打磨过程中使用到的打磨设备包括底板、直线滑轨、固定机构与打磨机构,底板中部安装有直线滑轨,直线滑轨上端布置有固定机构,固定机构安装在底板上,固定机构左右两侧对称布置有打磨机构,打磨机构安装在直线滑轨上,固定机构包括支撑板、固定环、固定螺栓与固定架,打磨机构包括滑动架、打磨电机、打磨盘、内撑筒、调节支链与打磨支链。本发明通过固定机构预先对轮毂进行固定锁紧后,由打磨机构对轮毂侧壁进行自动化打磨,打磨机构除转动外,还可相对轮毂进行往复直线运动,降低了打磨死角的出现几率。(The invention relates to an automobile hub local correction repair optimization method, which mainly comprises the following steps: wheel hub polishes, the mar is filled, the hot welding is filled, spray paint and polishing, the equipment of polishing that above-mentioned wheel hub polished in-process used includes the bottom plate, linear slide rail, fixed establishment and grinding machanism, the bottom plate mid-mounting has linear slide rail, fixed establishment has been arranged to linear slide rail upper end, fixed establishment installs on the bottom plate, grinding machanism has been arranged to the fixed establishment left and right sides symmetry, grinding machanism installs on linear slide rail, fixed establishment includes the backup pad, solid fixed ring, fixing bolt and mount, grinding machanism includes the carriage, grinding motor, the polishing dish, an internal stay section of thick bamboo, adjust the branch chain and. According to the invention, after the hub is fixed and locked in advance by the fixing mechanism, the side wall of the hub is automatically polished by the polishing mechanism, and the polishing mechanism can perform reciprocating linear motion relative to the hub besides rotating, so that the probability of polishing dead corners is reduced.)

1. A local correction repair optimization method for an automobile hub is characterized by comprising the following steps: the method mainly comprises the following steps:

s1, polishing the wheel hub, fixing the wheel hub to be repaired by using polishing equipment, and then removing stubborn stains on the surface of the wheel hub by using the polishing equipment;

s2 filling scratches, namely filling scratches with smaller surface area of the hub by using alloy atomic ash mixed with a curing agent;

s3, hot welding and filling, namely, welding and filling scratches with large surface area of the hub and gaps at the edge of the hub by using an aluminum welding machine, and grinding uneven positions of the welded part by using an angle grinder after filling;

s4, spraying paint, namely, spraying paint on the surface of the hub by using a spray gun, and curing the paint by using a baking lamp, wherein the baking time is 20-30 minutes;

s5, polishing, namely, polishing the painted hub twice to ensure the smooth and bright surface of the hub;

the polishing equipment used in the hub polishing process comprises a bottom plate (1), a linear slide rail (2), a fixing mechanism (3) and a polishing mechanism (4), wherein the linear slide rail (2) is installed in the middle of the bottom plate (1), the fixing mechanism (3) is arranged at the upper end of the linear slide rail (2), the fixing mechanism (3) is installed on the bottom plate (1), the polishing mechanisms (4) are symmetrically arranged on the left side and the right side of the fixing mechanism (3), and the polishing mechanisms (4) are installed on the linear slide rail (2);

the fixing mechanism (3) comprises a supporting plate (31), a fixing ring (32), a fixing bolt (33) and a fixing frame (34), the supporting plate (31) is installed on the bottom plate (1), the fixing ring (32) is installed at the upper end of the supporting plate (31), threaded holes are evenly formed in the outer wall of the fixing ring (32) along the circumferential direction of the fixing ring, the threaded holes are provided with the fixing bolt (33) through threads, and the fixing frame (34) is installed at the bottom end of the fixing bolt (33);

grinding machanism (4) are including carriage (41), grinding motor (42), the mill (43), an interior section of thick bamboo (44), adjust branch chain (45) and grinding branch chain (46), carriage (41) lower extreme is installed on linear slide rail (2) through sliding fit, install grinding motor (42) through the motor cabinet on carriage (41) upper end lateral wall, grinding motor (42) output shaft is connected with mill (43) outer wall, install an interior section of thick bamboo (44) of propping on mill (43) inner wall, it has adjusted branch chain (45) to arrange in an interior section of thick bamboo (44), grinding branch chain (46) are installed to interior section of thick bamboo (44) left and right sides symmetry.

2. The method for optimizing the local correction and repair of the automobile hub according to claim 1, characterized in that: the fixing frame (34) comprises a telescopic plate (341), clamping plates (342) and clamping rods (343), the upper end of the telescopic plate (341) is connected with the lower end of a fixing bolt (33) through a bearing, the lower end of the telescopic plate (341) is of an arc surface structure, the telescopic plate (341) is of a left-right telescopic structure, the clamping plates (342) are symmetrically installed at the left end and the right end of the telescopic plate (341) through hinges, clamping holes are evenly formed in the side wall of the clamping plates (342) along the circumferential direction of the fixing ring (32), and the clamping rods (343) are inserted between the fixing holes which are oppositely arranged left and right.

3. The method for optimizing the local correction and repair of the automobile hub according to claim 1, characterized in that: the inner supporting cylinder (44) comprises a cylinder body (441), inner supporting bolts (442) and inner supporting plates (443), the outer side of the cylinder body (441) is installed on the side wall of the polishing disc (43), inner supporting plates (443) are symmetrically arranged on the upper side and the lower side of the cylinder body (441), the inner supporting plates (443) are connected with the side wall of the cylinder body (441) through the inner supporting bolts (442), adjusting grooves are formed in the side wall of the cylinder body (441), and rolling steel shafts are uniformly arranged on the outer wall of the inner supporting plates (443) through pin shafts.

4. The method for optimizing the local correction and repair of the automobile hub according to claim 1, characterized in that: the adjusting branched chain (45) comprises an adjusting gear (451), an adjusting motor (452), an adjusting frame (453) and an adjusting rack (454), the outer side of the adjusting gear (451) is installed on the side wall of the polishing disc (43) through a bearing, the inner side of the adjusting gear (451) is connected with an output shaft of the adjusting motor (452), the adjusting motor (452) is installed on the polishing disc (43) through a motor base, the adjusting frame (453) is arranged on the outer side of the adjusting gear (451), the adjusting frame (453) is installed in an adjusting groove in a sliding fit mode, the adjusting rack (454) is symmetrically clamped on the upper side and the lower side of the adjusting frame (453), and the lower end of the adjusting rack (454) on the upper side of the adjusting frame (453) is meshed with the upper end.

5. The method for optimizing the local correction and repair of the automobile hub according to claim 1, characterized in that: grinding branch chain (46) include deflector (461), sliding block (462), installation piece (463), abrasive paper (464) and electric telescopic handle (465), deflector (461) are installed on barrel (441) lateral wall, the guide way has been seted up on deflector (461), sliding block (462) are installed through sliding fit mode in the guide way, the sliding block (462) outside is connected with adjustment frame (453) lateral wall, sliding block (462) inboard is connected with electric telescopic handle (465) one end, installation piece (463) are installed to electric telescopic handle (465) other end, abrasive paper (464) have been bonded to installation piece (463) inboard.

6. The method for optimizing the local correction and repair of the automobile hub according to claim 5, characterized in that: the installation piece (463) is including installation cell body (463a), rubber sleeve (463b), extrusion piece (463c) and carriage release lever (463d), and installation cell body (463a) one end is connected with sliding block (462) lateral wall, and rubber sleeve (463b) is installed to the installation cell body (463a) other end, installs extrusion piece (463c) in installation cell body (463a), is provided with carriage release lever (463d) between extrusion piece (463c) and rubber sleeve (463 b).

7. The method for optimizing the local correction and repair of the automobile hub according to claim 6, characterized in that: the extrusion block (463c) is divided into a fixed end and an extrusion end, the fixed end is installed on the inner wall of the installation groove body (463a), the inner side of the fixed end is connected with the extrusion end through a spring, and the inner side wall of the extrusion end is of an irregular arc surface structure.

8. The method for optimizing the local correction and repair of the automobile hub according to claim 4, characterized in that: the adjusting rack (454) is of a segmented splicing type structure.

Technical Field

The invention relates to the technical field of automobile part maintenance, in particular to an automobile hub local correction repair optimization method.

Background

The hub is a cylindrical metal part with the inner contour of the tire supporting the tire and the center of the metal part is arranged on the shaft, and the hub is various according to the diameter, the width, the forming mode and the material. During the running process of a vehicle, the hub is easy to scratch due to collision or misoperation, and cracks, gaps and even deformation occur. Under the condition that the abrasion of the wheel hub is slight, the cost for replacing a new wheel hub is too high, and compared with the prior art, the wheel hub has obvious repairing effect and reasonable price, so that the wheel hub is the first choice of most car owners.

At present, when the hub is repaired, firstly, the hub is ground to completely clean the surface of the hub, and the following problems exist in the grinding process:

(1) the polishing is divided into sand paper polishing and sand blasting polishing, the manual method is needed to finish the polishing by adopting the method, the working efficiency is low, a large amount of dust is generated during polishing, the dust is easily sucked into the lung by mistake, and the harm to the body of a worker is inevitably caused if the dust is absorbed in the lung;

(2) because the polishing is carried out in a manual mode, the polishing cleanness of the surface of the hub is difficult to ensure under the inherent instability effect of manual operation during operation, the repairing precision of fine damages such as scratches and grazes in the subsequent repairing process can be influenced, and the phenomenon of uneven spraying on the surface of the hub after paint spraying can be caused.

In order to solve the problems, the invention provides an automobile hub local correction repair optimization method.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: a local correction repair optimization method for an automobile hub mainly comprises the following steps:

s1, polishing the wheel hub, fixing the wheel hub to be repaired by using polishing equipment, and then removing stubborn stains on the surface of the wheel hub by using the polishing equipment;

s2 filling scratches, namely filling scratches with smaller surface area of the hub by using alloy atomic ash mixed with a curing agent;

s3, hot welding and filling, namely, welding and filling scratches with large surface area of the hub and gaps at the edge of the hub by using an aluminum welding machine, and grinding uneven positions of the welded part by using an angle grinder after filling;

s4, spraying paint, namely, spraying paint on the surface of the hub by using a spray gun, and curing the paint by using a baking lamp, wherein the baking time is 20-30 minutes;

s5, polishing, namely, polishing the painted hub twice to ensure the smooth and bright surface of the hub;

the polishing equipment used in the hub polishing process comprises a bottom plate, a linear slide rail, a fixing mechanism and a polishing mechanism, wherein the linear slide rail is arranged in the middle of the bottom plate, the fixing mechanism is arranged at the upper end of the linear slide rail, the fixing mechanism is arranged on the bottom plate, the polishing mechanisms are symmetrically arranged on the left side and the right side of the fixing mechanism, and the polishing mechanisms are arranged on the linear slide rail;

the fixing mechanism comprises a supporting plate, a fixing ring, a fixing bolt and a fixing frame, the supporting plate is installed on the bottom plate, the fixing ring is installed at the upper end of the supporting plate, threaded holes are evenly formed in the outer wall of the fixing ring along the circumferential direction of the fixing ring, the fixing bolt is installed in each threaded hole through a thread, and the fixing frame is installed at the bottom end of the fixing bolt; after the wheel hub is placed in the middle of the fixing ring, the fixing bolt can be screwed down until the fixing frame is tightly attached to the side wall of the wheel hub, so that the purpose of fixing and locking the wheel hub is achieved, and the stable operation of subsequent polishing is guaranteed.

The polishing mechanism comprises a sliding frame, a polishing motor, a polishing disc, an inner supporting cylinder, an adjusting branched chain and a polishing branched chain, wherein the lower end of the sliding frame is installed on a linear slide rail in a sliding fit mode, the polishing motor is installed on the side wall of the upper end of the sliding frame through a motor base, the output shaft of the polishing motor is connected with the outer wall of the polishing disc, the inner supporting cylinder is installed on the inner wall of the polishing disc, the adjusting branched chain is arranged in the inner supporting cylinder, and the polishing branched chains are symmetrically installed on the left side and; fix wheel hub on fixed establishment after, adjust the carriage position for the internal stay section of thick bamboo can stretch into in the bearing hole that wheel hub middle part set up, support wheel hub from the inside at the in-process of polishing, further improve the stability of the in-process of polishing, later alright drive the branch chain of polishing through grinding motor and polish to the lateral wall about wheel hub, the in-process of polishing, the accessible is adjusted the branch chain and is adjusted the position of polishing, guarantees the wholeness of polishing.

Preferably, the fixing frame comprises a telescopic plate, clamping plates and clamping rods, the upper end of the telescopic plate is connected with the lower end of the fixing bolt through a bearing, the lower end of the telescopic plate is of an arc surface structure, the telescopic plate is of a left-right telescopic structure, the clamping plates are symmetrically arranged at the left end and the right end of the telescopic plate through hinges, clamping holes are uniformly formed in the side wall of the clamping plates along the circumferential direction of the fixing ring, and the clamping rods are inserted between the fixing holes which are oppositely arranged on the left side and the right side; the expansion plate is pressed tightly on the wheel hub outer wall, rotates the cardboard to vertical position, according to the actual position of spoke on the wheel hub, inserts the screens downthehole of both sides around the spoke with two screens poles to take place relative slip with the expansion plate for wheel hub.

Preferably, the inner supporting cylinder comprises a cylinder body, inner supporting bolts and inner supporting plates, the outer side of the cylinder body is arranged on the side wall of the polishing disc, the inner supporting plates are symmetrically arranged on the upper side and the lower side of the cylinder body, the inner supporting plates are connected with the side wall of the cylinder body through the inner supporting bolts, the side wall of the cylinder body is provided with adjusting grooves, and the outer wall of each inner supporting plate is uniformly provided with rolling steel shafts through pin shafts; the inner supporting plate is adjusted in position by rotating the inner supporting bolt until the inner supporting plate is tightly attached to the inner wall of the bearing hole in the middle of the hub, so that the purpose of supporting the inside of the hub is achieved.

Preferably, the adjusting branch chain comprises an adjusting gear, an adjusting motor, an adjusting frame and an adjusting rack, the outer side of the adjusting gear is mounted on the side wall of the polishing disc through a bearing, the inner side of the adjusting gear is connected with an output shaft of the adjusting motor, the adjusting motor is mounted on the polishing disc through a motor base, the adjusting frame is arranged on the outer side of the adjusting gear, the adjusting frame is mounted in the adjusting groove in a sliding fit mode, the adjusting racks are symmetrically clamped on the upper side and the lower side of the adjusting frame, and the lower end of the adjusting rack positioned on the upper side of the adjusting frame is meshed; the adjusting gear is driven to rotate through the adjusting motor, under the matching effect of the adjusting gear and the two adjusting racks which are symmetrically arranged up and down, the adjusting frame can perform reciprocating linear motion back and forth in the adjusting groove, and therefore the polishing branched chains are driven to polish different positions of the hub, and polishing comprehensiveness is guaranteed.

Preferably, the polishing branched chain comprises a guide plate, a sliding block, an installation block, abrasive paper and an electric telescopic rod, wherein the guide plate is installed on the side wall of the barrel body, a guide groove is formed in the guide plate, the sliding block is installed in the guide groove in a sliding fit mode, the outer side of the sliding block is connected with the side wall of the adjusting frame, the inner side of the sliding block is connected with one end of the electric telescopic rod, the installation block is installed at the other end of the electric telescopic rod, and the abrasive paper is bonded on the; after the position of the mounting block is properly adjusted through the electric telescopic rod, the sliding block can synchronously move along with the adjusting frame under the guiding action of the guide groove, and the purpose of comprehensively polishing the left side wall and the right side wall of the hub is achieved in the front-back movement process.

Preferably, the mounting block comprises a mounting groove body, a rubber sleeve, an extrusion block and a moving rod, one end of the mounting groove body is connected with the side wall of the sliding block, the other end of the mounting groove body is provided with the rubber sleeve, the extrusion block is mounted in the mounting groove body, and the moving rod is arranged between the extrusion block and the rubber sleeve; the branched chain of polishing rotates and reciprocal linear motion in-process, and the carriage release lever can carry out irregular motion between rubber sleeve and extrusion piece to produce the extrusion to the rubber sleeve, make the rubber sleeve produce deformation, can increase abrasive paper and the contact compactness of wheel hub lateral wall behind the rubber sleeve evagination, thereby improve intensity of polishing.

Preferably, the extrusion piece divide into stiff end and extrusion end, and the stiff end is installed on installation cell body inner wall, and the stiff end inboard is connected with the extrusion end through the spring, and the extrusion end inside wall is anomalous arc surface structure.

Preferably, the adjusting rack is of a segmented splicing structure, so that the movement distance of the adjusting frame can be adjusted according to the actual size of the hub.

The invention has the beneficial effects that:

1. according to the method for optimizing the local correction and repair of the automobile hub, the side wall of the hub is automatically polished by the polishing mechanism after the hub is fixed and locked by the fixing mechanism in advance, and the polishing mechanism can perform reciprocating linear motion relative to the hub besides rotating in the polishing process, so that the probability of polishing dead corners is reduced, and the polishing comprehensiveness is guaranteed;

2. according to the fixing mechanism designed by the invention, after the hub is placed in the middle of the fixing ring during operation, the fixing bolt can be screwed until the fixing frame is tightly attached to the side wall of the hub, so that the purpose of fixing and locking the hub is achieved, and the stable operation of subsequent polishing work is ensured;

3. according to the grinding mechanism designed by the invention, under the matching action of the adjusting gear and the two adjusting racks which are symmetrically arranged up and down, the adjusting frame can perform reciprocating linear motion back and forth in the adjusting groove, so that the grinding branched chain is driven to grind different positions of the hub, and the grinding comprehensiveness is ensured.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a diagram of the working steps of the present invention;

FIG. 2 is a schematic view of the construction of the sanding apparatus of the present invention;

FIG. 3 is a schematic view of a portion of the structure between the holding mechanism and the grinding mechanism of the present invention;

FIG. 4 is a schematic diagram of the structure of a grinding chain of the present invention;

fig. 5 is an enlarged view of the invention from the N-direction of fig. 3.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1 to 5, a method for optimizing local correction and repair of an automobile hub mainly includes the following steps:

s1, polishing the wheel hub, fixing the wheel hub to be repaired by using polishing equipment, and then removing stubborn stains on the surface of the wheel hub by using the polishing equipment;

s2 filling scratches, namely filling scratches with smaller surface area of the hub by using alloy atomic ash mixed with a curing agent;

s3, hot welding and filling, namely, welding and filling scratches with large surface area of the hub and gaps at the edge of the hub by using an aluminum welding machine, and grinding uneven positions of the welded part by using an angle grinder after filling;

s4, spraying paint, namely, spraying paint on the surface of the hub by using a spray gun, and curing the paint by using a baking lamp, wherein the baking time is 20-30 minutes;

s5, polishing, namely, polishing the painted hub twice to ensure the smooth and bright surface of the hub;

the polishing equipment used in the hub polishing process comprises a bottom plate 1, a linear slide rail 2, a fixing mechanism 3 and a polishing mechanism 4, wherein the linear slide rail 2 is installed in the middle of the bottom plate 1, the fixing mechanism 3 is arranged at the upper end of the linear slide rail 2, the fixing mechanism 3 is installed on the bottom plate 1, the polishing mechanisms 4 are symmetrically arranged on the left side and the right side of the fixing mechanism 3, and the polishing mechanisms 4 are installed on the linear slide rail 2;

the fixing mechanism 3 comprises a supporting plate 31, a fixing ring 32, a fixing bolt 33 and a fixing frame 34, the supporting plate 31 is installed on the bottom plate 1, the fixing ring 32 is installed at the upper end of the supporting plate 31, threaded holes are evenly formed in the outer wall of the fixing ring 32 along the circumferential direction of the outer wall, the fixing bolt 33 is installed in the threaded holes through threads, and the fixing frame 34 is installed at the bottom end of the fixing bolt 33; after the hub is placed in the middle of the fixing ring 32, the fixing bolt 33 can be screwed until the fixing frame 34 is tightly attached to the side wall of the hub, so that the purpose of fixing and locking the hub is achieved, and the stable operation of subsequent polishing is ensured.

The fixing frame 34 comprises a telescopic plate 341, clamping plates 342 and clamping rods 343, the upper end of the telescopic plate 341 is connected with the lower end of the fixing bolt 33 through a bearing, the lower end of the telescopic plate 341 is of an arc surface structure, the telescopic plate 341 is of a left-right telescopic structure, the clamping plates 342 are symmetrically installed at the left end and the right end of the telescopic plate 341 through hinges, clamping holes are uniformly formed in the side wall of the clamping plates 342 along the circumferential direction of the fixing ring 32, and the clamping rods 343 are inserted between the fixing holes which are oppositely arranged left and right; after the expansion plate 341 sticiss on the wheel hub outer wall, rotate cardboard 342 to vertical position, according to the actual position of spoke on the wheel hub, insert the screens hole of both sides around the spoke with two screens poles 343 to take place relative slip for wheel hub and expansion plate 341.

The polishing mechanism 4 comprises a sliding frame 41, a polishing motor 42, a polishing disc 43, an inner supporting cylinder 44, an adjusting branched chain 45 and a polishing branched chain 46, the lower end of the sliding frame 41 is installed on the linear sliding rail 2 in a sliding fit mode, the polishing motor 42 is installed on the side wall of the upper end of the sliding frame 41 through a motor base, the output shaft of the polishing motor 42 is connected with the outer wall of the polishing disc 43, the inner supporting cylinder 44 is installed on the inner wall of the polishing disc 43, the adjusting branched chain 45 is arranged in the inner supporting cylinder 44, and the polishing branched chains 46 are symmetrically installed on the left side and the right; fix wheel hub on fixed establishment 3 after, adjust carriage 41 position for interior section of thick bamboo 44 that props can stretch into in the bearing hole that wheel hub middle part set up, support wheel hub from the inside at the in-process of polishing, further improve the stability of the in-process of polishing, later alright drive the branch chain 46 of polishing and polish to the lateral wall about the wheel hub through grinding motor 42, the in-process of polishing, the accessible is adjusted branch chain 45 and is adjusted the position of polishing, guarantees the comprehensive nature of polishing.

The inner supporting cylinder 44 comprises a cylinder body 441, an inner supporting bolt 442 and an inner supporting plate 443, the outer side of the cylinder body 441 is installed on the side wall of the polishing disc 43, the inner supporting plates 443 are symmetrically arranged on the upper side and the lower side of the cylinder body 441, the inner supporting plate 443 is connected with the side wall of the cylinder body 441 through the inner supporting bolt 442, the side wall of the cylinder body 441 is provided with adjusting grooves, and the outer wall of the inner supporting plate 443 is uniformly provided with rolling steel shafts through pin shafts; the position of the inner supporting plate 443 is adjusted by rotating the inner supporting bolt 442 until the inner supporting plate 443 is tightly attached to the inner wall of the bearing hole in the middle of the hub, so that the purpose of supporting the inside of the hub is achieved.

The adjusting branched chain 45 comprises an adjusting gear 451, an adjusting motor 452, an adjusting frame 453 and an adjusting rack 454, the outer side of the adjusting gear 451 is mounted on the side wall of the polishing disc 43 through a bearing, the inner side of the adjusting gear 451 is connected with an output shaft of the adjusting motor 452, the adjusting motor 452 is mounted on the polishing disc 43 through a motor base, the adjusting frame 453 is arranged on the outer side of the adjusting gear 451, the adjusting frame 453 is mounted in the adjusting groove in a sliding fit manner, the adjusting racks 454 are symmetrically clamped on the upper side and the lower side of the adjusting frame 453, the lower end of the adjusting rack 454 positioned on the upper side of the adjusting frame 453 is engaged with the upper end of the adjusting gear 451, the adjusting rack 454 is of a segmented splicing type structure, so that the moving distance of the adjusting frame 453 is adjusted according to the actual size of a hub, the adjusting gear 451 is driven to rotate by the adjusting motor 452, so that the adjusting frame 453 can perform a back-and-forth reciprocating linear motion in the adjusting groove, thereby driving the polishing branched chains 46 to polish different positions of the hub, so as to ensure the polishing comprehensiveness.

The polishing branched chain 46 comprises a guide plate 461, a sliding block 462, an installation block 463, abrasive paper 464 and an electric telescopic rod 465, wherein the guide plate 461 is installed on the side wall of the cylinder 441, a guide groove is formed in the guide plate 461, the sliding block 462 is installed in the guide groove in a sliding fit mode, the outer side of the sliding block 462 is connected with the side wall of the adjusting frame 453, the inner side of the sliding block 462 is connected with one end of the electric telescopic rod 465, the installation block 463 is installed at the other end of the electric telescopic rod 465, and the abrasive paper 464 is bonded on the; after the position of the installation block 463 is properly adjusted by the electric telescopic rod 465, the sliding block 462 can synchronously move along with the adjusting frame 453 under the guiding action of the guide groove, and the purpose of comprehensively polishing the left side wall and the right side wall of the hub is achieved in the front-back movement process.

The installation block 463 comprises an installation groove body 463a, a rubber sleeve 463b, an extrusion block 463c and a moving rod 463d, wherein one end of the installation groove body 463a is connected with the side wall of the sliding block 462, the other end of the installation groove body 463a is provided with the rubber sleeve 463b, the extrusion block 463c is installed in the installation groove body 463a, the moving rod 463d is arranged between the extrusion block 463c and the rubber sleeve 463b, the extrusion block 463c is divided into a fixed end and an extrusion end, the fixed end is installed on the inner wall of the installation groove body 463a, the inner side of the fixed end is connected with the extrusion end through a spring, and the inner side wall of; polishing branch chain 46 rotates and reciprocal linear motion in-process, and the carriage release lever 463d can carry out irregular motion between rubber sleeve 463b and extrusion piece 463c to produce the extrusion to rubber sleeve 463b, make rubber sleeve 463b produce deformation, can increase the contact compactness of abrasive paper 464 and wheel hub lateral wall behind the rubber sleeve 463b evagination, thereby improve intensity of polishing.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.