CN113059413B - Automobile wheel hub makes surface treatment processing machinery - Google Patents

Abstract

The invention provides a surface treatment and processing machine for manufacturing an automobile wheel hub, which comprises a worktable, a clamping and rotating mechanism and a surface grinding mechanism. The invention can solve the following problems in the surface treatment process of automobile wheel manufacturing: a. After the automobile wheel is cast and formed, its surface will have many burrs, which are not smooth and flat, so that it cannot be used directly, and the surface needs to be polished , The traditional grinding method is artificial grinding wheel grinding, which requires manual pressing and fixing, which is time-consuming and labor-intensive, resulting in low grinding efficiency and high work intensity; b. At present, the existing grinding device grinds the inner and outer side walls of the hub in steps, which is not easy to achieve. The inner and outer walls of the wheel hub can be ground at the same time. Since the wheel hub needs to be fixed before grinding, the wheel hub needs to be fixed twice for step-by-step grinding, and the work intensity is high.

Description

An automobile wheel hub manufacturing surface treatment processing machine

technical field

The invention relates to the technical field of automobile wheel hub manufacturing, in particular to a surface treatment processing machine for automobile wheel hub manufacturing.

Background technique

The wheel hub is the rotating part of the wheel core connected by the inner profile of the tire through the column, that is, the metal part that supports the center of the tire and is mounted on the shaft, also known as the wheel rim, steel ring, wheel, tire bell. , There are many different kinds of materials. There are three manufacturing methods for aluminum alloy wheels: gravity casting, forging, and low-pressure precision casting. The gravity casting method uses gravity to pour the aluminum alloy solution into the mold, and after forming, it is processed and polished by a lathe to complete the production.

At present, the following problems exist in the surface treatment process of automobile wheel manufacturing: a. After the automobile wheel is poured and formed, its surface will have many burrs, which are not smooth and flat, so that it cannot be used directly, and the surface needs to be polished. Traditional The most common grinding method is artificial grinding wheel grinding, which requires manual pressing and fixing, which is time-consuming and labor-intensive, resulting in low grinding efficiency and high work intensity; b. The current existing grinding device grinds the inner and outer side walls of the hub in steps, which fails to achieve At the same time, the inner and outer walls of the wheel hub are ground. Because the wheel hub needs to be fixed before grinding, and the step-by-step grinding needs to fix the wheel hub twice, the work intensity is high.

SUMMARY OF THE INVENTION

(1) Technical problems to be solved

The invention provides an automobile wheel hub manufacturing surface treatment processing machine, which can solve the following problems in the process of automobile wheel hub manufacturing surface treatment processing: a. After the automobile wheel hub is poured and formed, its surface will have many burrs, which are not smooth and flat , so that it cannot be used directly, and the surface needs to be ground. The traditional grinding method is manual grinding, which requires manual pressing and fixing, which is time-consuming and labor-intensive, resulting in low grinding efficiency and high work intensity; b. At present, the existing grinding device is used for grinding. When grinding the inner and outer walls of the hub in steps, it is impossible to grind the inner and outer walls of the hub at the same time. Because the hub needs to be fixed before grinding, and the step-by-step grinding needs to fix the hub twice, and the work intensity is high.

(2) Technical solutions

In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a surface treatment processing machine for the manufacture of automobile wheel hubs, comprising a workbench, a clamping and rotating mechanism and a surface grinding mechanism, and a clamping and rotating mechanism is provided at the upper middle part of the worktable, A surface grinding mechanism is provided above and in the outer direction of the clamping and rotating mechanism, and the surface grinding mechanism is fixedly installed on the workbench; wherein:

The clamping and rotating mechanism includes a rotating disk, a rotating groove, a rotating ring, a clamping branch chain, a clamping groove, a restricting groove, a clamping block, a driving rod, a driving groove, a restricting block, a rotating shaft and a rotating motor. The middle part of the worktable is installed with a vertical rotating shaft through a bearing, the upper end of the rotating shaft is fixedly installed with a rotating plate, and the lower end of the rotating shaft is connected with the output end of the rotating motor through a coupling, and the rotating motor is installed through the motor base On the lower end surface of the worktable, an annular rotating groove is opened inside the rotating plate, a rotating ring is installed in the rotating groove through a bearing, and an arc-shaped driving groove is evenly opened on the end surface of the rotating ring along the circumferential direction of its center. The upper end surface of the rotating disk is provided with a clamping groove along the center circumference thereof, the clamping groove is communicated with the rotating groove, a clamping block is slidably arranged in the clamping groove, and the lower end of the clamping block is fixedly connected with a clamping block. A driving rod, the driving rod is located in the driving groove, the rotating disk is provided with a restricting groove that communicates with the rotating groove, the restricting groove is located at the lower end of the rotating groove, and corresponds to the clamping groove one-to-one, the driving The lower end of the rod is fixedly connected with a limiting block, the limiting block is slidably arranged in the limiting groove, and a clamping branch chain is arranged on the outer side wall of the rotating ring.

The surface grinding mechanism includes an L-shaped plate, an external grinding branch chain, an internal grinding block, a connecting block, a support rod, a sliding block, a fixed rod, a fixed block, a double-shaft screw, a grinding motor and a lifting cylinder. An L-shaped plate is fixedly installed on the rear side of the upper end face, a lifting cylinder is fixedly installed on the top of the L-shaped plate, a fixing block is fixedly connected to the lower end of the lifting cylinder, and fixing rods are symmetrically installed on both sides of the lower end of the fixing block. The lower end of the fixing rod is also fixedly installed on the fixing block, and sliding blocks are symmetrically distributed up and down between the two fixing blocks. Both ends of the sliding block are slidably sleeved on the fixing rod. A biaxial screw is vertically arranged at the place, the lower end of the biaxial screw is mounted on the fixed block through a bearing, the upper end of the biaxial screw is connected with the output end of the grinding motor through a coupling, and the grinding motor is installed on the motor seat through the motor base. On the fixed block, the two sliding blocks are sleeved on the double-axis screw by means of thread matching, support rods are installed on the outer walls of both ends of the sliding block to rotate up and down, and connecting blocks are symmetrically arranged on both sides of the sliding block. , the other end of the support rod at both ends of the upper sliding block is rotated and installed on the upper end of the connecting block, the other end of the supporting rod at both ends of the lower sliding block is rotated and installed at the lower end of the connecting block, and the end face of the connecting block away from the sliding block is fixedly installed with an inner A grinding block, the upper end of the inner grinding block is an arc structure, and an external grinding branch chain is arranged on the worktable along the outer direction of the rotating disk.

Preferably, the clamping branch chain includes an annular groove, an annular rack, a clamping gear, a connecting shaft, a groove and an inner hexagon head, an annular groove is formed on the outer side wall of the rotating ring, and an annular groove is arranged in the annular groove. Ring-shaped rack, a clamping gear is arranged in the annular groove, the clamping gear is externally engaged with the rack, and the clamping gear is fixedly sleeved on a connecting shaft, and the connecting shaft is mounted on the rotating disk through a bearing Among them, a groove is formed on the outer side wall of the rotating disk, and an inner hexagon head is arranged in the groove, and the inner hexagon head is fixedly connected with the other end of the connecting shaft.

Preferably, the external grinding branch chain includes an external grinding block, an L-shaped rod, a moving block, a moving groove, a ring and a drive assembly, and a moving groove is evenly opened on the upper end surface of the worktable along the outer direction of the rotating disk. , a moving block is slidably arranged in the moving groove, an annular installation groove is opened inside the worktable, the installation groove is communicated with the moving groove, and a circular ring is rotatably installed in the moving groove, and the circular ring is mounted on the circular ring. The end surface is provided with a plane thread groove, the lower end surface of the moving block is provided with a thread that is threadedly matched with the plane thread groove, the inner side of the ring is matched with the driving component, the upper end of the moving block is fixedly connected with an L-shaped rod, the An outer grinding block is fixedly installed on the top of the L-shaped rod toward the rotating disk, and the upper and lower ends of the side of the outer grinding block facing the hub are set as arc surfaces matching with the end of the outer wall of the hub.

Preferably, the drive assembly includes a drive gear, a drive shaft and a drive motor, an annular rack is provided on the inner side wall of the ring, the ring is meshed with the drive gear through the rack, and the drive gear is fixed The drive shaft is sleeved on the drive shaft, the drive shaft is installed in the worktable through a bearing, the lower end of the drive shaft is connected with the output end of the drive motor through a coupling, and the drive motor is installed on the lower end face of the worktable through a motor seat.

Preferably, both sides of the moving block are provided with dovetail grooves, and both sides of the moving block are provided with dovetail blocks matched with the dovetail grooves.

Preferably, an annular block is fixedly installed on the lower end surface of the rotary disk, and the annular block has a T-shaped structure, and an annular T-shaped groove is formed on the upper end surface of the worktable, and the annular block is slidably matched with the T-shaped groove.

(3) Beneficial effects

1. The present invention provides a kind of automobile wheel hub manufacturing surface treatment processing machine, which can solve the following problems existing in the automobile wheel hub manufacturing surface treatment process: a. After the automobile wheel hub is poured and formed, its surface will have many burrs, which are not It is smooth and flat, so it cannot be used directly, and the surface needs to be ground. The traditional grinding method is manual grinding, which requires manual pressing and fixing, which is time-consuming and laborious, resulting in low grinding efficiency and high work intensity; b. The current existing grinding When the device is grinding, the inner and outer walls of the hub are polished in steps, and the inner and outer walls of the hub cannot be polished at the same time. Because the hub needs to be fixed before grinding, and the step-by-step grinding requires two times to fix the hub, which is of great work intensity.

2. The clamping and rotating mechanism designed by the present invention controls the inner clamping of the clamping block to the hub by clamping the branch chain, and uses the arc-shaped driving groove opened on the rotating ring to realize the control of the driving rod, so that the driving rod drives the clamping. The block moves to achieve the inner support and fixation of the hub, and then the rotating shaft is driven by the rotating motor to drive the rotating disk to rotate, so that the hub fixed on the rotating disk rotates, so that the surface grinding mechanism can grind the inner and outer walls of the hub, among which the rotating disk The lower end rotates in the T-slot on the worktable through the ring block to ensure the smooth rotation of the rotating disc and prevent jitter.

3. The surface grinding mechanism designed by the present invention uses the principle of the connecting rod and the characteristics of the double-shaft screw. Under the driving of the grinding motor, the double-shaft screw rotates, which makes the sliding move up and down, and then drives the connecting block to move toward the inner wall of the hub until the inner The grinding block is attached to the inner wall of the hub, and at the same time, the ring is rotated by the driving motor under the gear meshing transmission. , and then make the outer grinding block fit with the outer wall of the wheel hub, and then under the action of the clamping and rotating mechanism, the wheel hub is rotated, thereby realizing the grinding of the inner and outer walls of the wheel hub by the outer grinding block and the inner grinding block.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the three-dimensional structure diagram of the present invention;

Fig. 2 is the front sectional view of the present invention;

Fig. 3 is the partial enlarged view of the A part of accompanying drawing 2 of the specification of the present invention;

Fig. 4 is the partial enlarged view of B of accompanying drawing 3 of the specification of the present invention;

5 is a cross-sectional view of the matching of the moving block and the moving groove in the specification of the present invention;

Figure 6 is a three-dimensional view of the rotating ring in the specification of the present invention;

FIG. 7 is a work object of the present invention.

Detailed ways

Embodiments of the present invention will be described below with reference to the accompanying drawings. During this process, in order to ensure the clarity and convenience of the description, we may exaggerate the width of the lines or the size of the components in the illustrations.

In addition, the following terms are defined based on the functions in the present invention, and may be different depending on the user, the operator's intention, or convention. Therefore, these terms are defined based on the entire content of this specification.

As shown in Figures 1 to 7, a surface treatment and processing machine for the manufacture of automobile wheel hubs includes a worktable 1, a clamping and rotating mechanism 2 and a surface grinding mechanism 3. The upper and middle part of the worktable 1 is provided with a clamping and rotating mechanism. 2. A surface grinding mechanism 3 is provided above and in the outer direction of the clamping and rotating mechanism 2, and the surface grinding mechanism 3 is fixedly installed on the workbench 1; wherein:

The clamping and rotating mechanism 2 includes a rotating plate 21, a rotating groove 22, a rotating ring 23, a clamping branch 24, a clamping groove 25, a restricting groove 26, a clamping block 27, a driving rod 28, a driving groove 29, a limit The block 210, the rotating shaft 211 and the rotating motor 212, a vertical rotating shaft 211 is installed in the middle of the worktable 1 through a bearing, a rotating disk 21 is fixedly installed on the upper end of the rotating shaft 211, and the lower end of the rotating shaft 211 is connected The shaft is connected to the output end of the rotating motor 212. The rotating motor 212 is installed on the lower end face of the worktable 1 through a motor seat. An annular rotating groove 22 is opened inside the rotating plate 21, and the rotating groove 22 rotates through a bearing. A rotating ring 23 is installed, the end surface of the rotating ring 23 is evenly provided with an arc-shaped driving groove 29 along the circumferential direction of the center, and the upper end surface of the rotating disk 21 is provided with a clamping groove 25 The groove 25 is communicated with the rotating groove 22, a clamping block 27 is slidably arranged in the clamping groove 25, and a driving rod 28 is fixedly connected to the lower end of the clamping block 27, and the driving rod 28 is located in the driving groove 29, so The rotating disc 21 is provided with a restricting groove 26 that communicates with the rotating groove 22. The restricting groove 26 is located at the lower end of the rotating groove 22 and corresponds to the clamping grooves 25. The lower end of the driving rod 28 is fixedly connected to limit the position. The limiting block 210 is slidably arranged in the limiting groove 26 , and a clamping branch 24 is provided on the outer side wall of the rotating ring 23 .

The clamping branch 24 includes an annular groove 241, an annular rack 242, a clamping gear 243, a connecting shaft 244, a groove 245 and an inner hexagon head 246. The outer side wall of the rotating ring 23 is provided with an annular groove 241, so An annular rack 242 is arranged in the annular groove 241, a clamping gear 243 is arranged in the annular groove 241, the clamping gear 243 is externally engaged with the rack, and the clamping gear 243 is fixedly sleeved on the connecting shaft. 244, the connecting shaft 244 is installed in the rotating disk 21 through a bearing, a groove 245 is opened on the outer side wall of the rotating disk 21, and a hexagonal head 246 is arranged in the groove 245, and the hexagonal head 246 It is fixedly connected with the other end of the connecting shaft 244 .

An annular block 21a is fixedly installed on the lower end surface of the rotary disk 21, and the annular block 21a has a T-shaped structure. The upper end surface of the worktable 1 is provided with an annular T-shaped groove, and the annular block 21a slides with the T-shaped groove. Cooperate.

In the specific work, the first step is to place the hub to be processed on the rotary disk 21, and then manually rotate the hexagonal head 246 with the help of an Allen wrench, so that the Allen head 246 drives the connecting shaft 244 to rotate, thereby making the clamping gear 243 rotate. , and the clamping gear 243 meshes with the annular rack 242 in the annular groove 241, so that the rotating ring 23 starts to rotate, and the rotating ring 23 passes through the arc-shaped driving groove 29 on it, so that the driving groove 29 drives the driving rod 28 to move , because the driving rod 28 is fixedly connected to the clamping block 27 and the limiting block 210 up and down respectively, so that the limiting block 210 slides smoothly in the limiting groove 26, and the clamping block 27 slides smoothly in the clamping groove 25, thereby The clamping block 27 is in close contact with the inner side wall of the wheel roller to realize the inner support and limit of the wheel hub;

In the second step, after the adjustment of the surface grinding mechanism 3 is completed, the rotating motor 212 is started, and the rotating motor 212 drives the rotating shaft 211 to rotate, so that the rotating shaft 211 drives the rotating disk 21 to rotate, so that the clamping block 27 on the rotating disk 21 drives the hub. Rotate, so as to realize the surface grinding mechanism 3 to grind the inner and outer walls of the hub, wherein the lower end of the rotary disc 21 is fixedly installed with a ring block 21a of a T-shaped structure, and rotates in the T-shaped groove on the worktable 1, so that the rotary disc 21 is stable Rotate to avoid jitter, which affects the grinding of the surface of the hub by the surface grinding mechanism 3.

The surface grinding mechanism 3 includes an L-shaped plate 31, an external grinding branch 32, an internal grinding block 33, a connecting block 34, a support rod 35, a sliding block 36, a fixed rod 37, a fixed block 38, a biaxial screw 39, a grinding The motor 310 and the lifting cylinder 311, the L-shaped plate 31 is fixedly installed at the rear side of the upper end face of the worktable 1, the lifting cylinder 311 is fixedly installed on the top of the L-shaped plate 31, and the lower end of the lifting cylinder 311 is fixedly connected with a fixed Block 38, a fixed rod 37 is installed symmetrically on both sides of the lower end of the fixed block 38, the lower end of the fixed rod 37 is also fixedly installed on the fixed block 38, and a sliding block 36 is symmetrically distributed up and down between the two fixed blocks 38, Both ends of the sliding block 36 are slidably sleeved on the fixing rod 37 , a biaxial screw 39 is vertically arranged in the middle between the two fixing blocks 38 , and the lower end of the biaxial screw 39 is mounted on the fixing block through a bearing. 38, the upper end of the double-shaft screw 39 is connected to the output end of the grinding motor 310 through a coupling, the grinding motor 310 is mounted on the fixed block 38 through a motor seat, and the two sliding blocks 36 are sleeved through a threaded fit. On the biaxial screw 39, support rods 35 are installed on the outer walls of both ends of the sliding block 36 to rotate up and down, and connecting blocks 34 are symmetrically arranged on both sides of the sliding block 36. The other end of the rod 35 is rotatably mounted on the upper end of the connecting block 34, the other end of the support rod 35 at both ends of the sliding block 36 below is rotatably mounted on the lower end of the connecting block 34, and the end face of the connecting block 34 away from the sliding block 36 is fixedly installed with an inner grinding block 33. The upper end of the inner grinding block 33 has an arc-shaped structure, and an external grinding branch chain 32 is provided on the worktable 1 along the outer direction of the rotating disk 21 .

The external grinding branch chain 32 includes an external grinding block 321, an L-shaped rod 322, a moving block 323, a moving groove 324, a ring 325 and a drive assembly 326. A moving groove 324 is evenly opened in the direction of the moving groove, and a moving block 323 is slidably arranged in the moving groove 324. An annular installation groove is opened inside the worktable 1, and the installation groove is communicated with the moving groove 324. The moving groove 324 A circular ring 325 is rotatably installed inside, the upper end surface of the circular ring 325 is provided with a plane thread groove, the lower end surface of the moving block 323 is provided with a thread that is threaded with the plane thread groove, and the inner side of the circular ring 325 is connected with the drive assembly 326 In cooperation, an L-shaped rod 322 is fixedly connected to the upper end of the moving block 323 , and an outer grinding block 321 is fixedly installed on the L-shaped rod 322 toward the top of the rotating disk 21 , and the outer grinding block 321 faces the upper and lower ends of one side of the hub. All are set as arc surfaces matching with the end of the outer wall of the hub.

The drive assembly 326 includes a drive gear 3261, a drive shaft 3262 and a drive motor 3263. An annular rack is formed on the inner side wall of the ring 325. The ring 325 is meshed with the drive gear 3261 through the rack, so The drive gear 3261 is fixedly sleeved on the drive shaft 3262, the drive shaft 3262 is installed in the table 1 through a bearing, and the lower end of the drive shaft 3262 is connected to the output end of the drive motor 3263 through a coupling, and the drive motor The 3263 is installed on the lower end face of the workbench 1 through the motor base.

Dovetail grooves 3231 are formed on both sides of the moving block 323 , and dovetail blocks 3232 matched with the dovetail grooves 3231 are formed on both sides of the moving groove 324 .

In the specific work, the first step is to start the driving motor 3263 after the wheel hub is clamped and fixed by the clamping and rotating mechanism 2, and the driving motor 3263 drives the driving shaft 3262 to rotate through the output end, thereby making the fixed sleeve on the driving shaft 3262. The driving gear 3261 rotates, the driving gear 3261 meshes with the rack on the inner side wall of the ring 325, so that the ring 325 rotates, and the ring 325 is matched with the thread of the moving block 323 through the plane thread groove on the ring 325, so that the moving block 323 Sliding in the moving groove 324 , wherein the moving ends are slidably matched with the dovetail blocks 3232 on both sides of the moving groove 324 through the dovetail groove 323 , so that the moving block 323 can move more smoothly, and at the same time, the thread matching between the moving block 323 and the ring 325 is ensured. The process is smooth, and then the moving block 323 drives the outer grinding block 321 to fit with the outer wall of the hub through the L-shaped rod 322;

In the second step, the lifting cylinder 311 is activated, and the lifting cylinder 311 drives the fixed block 38 to move down, thereby moving the inner grinding block 33 into the wheel hub, and then starts the grinding motor 310, which drives the double-shaft screw 39 to rotate through the output end, and the double-axis screw 39 is driven by the output end. The shaft screw 39 drives the two sliding blocks 36 to slide up and down, so that the support rods 35 at both ends of the sliding block 36 rotate, so that the support rod 35 drives the inner grinding block 33 to move toward the inner side wall of the hub until it fits with the inner side wall, wherein the inner grinding The upper end of the block 33 is provided with an arc surface structure, which can grind the arc surface of the hub, and at the same time limit the upper and lower positions of the hub to prevent the hub from sliding up and down when it rotates.

The steps of the present invention at work:

The first step: place the hub to be processed on the rotating disk 21, and then clamp and fix the hub through the clamping and rotating mechanism 2;

The second step: then start the surface grinding mechanism 3, so that the inner grinding block 33 and the outer grinding block 321 are attached to the inner and outer side walls of the hub, and then the rotating disk 21 is driven by the clamping and rotating mechanism 2 to drive the hub to rotate;

Step 3: After the grinding is completed, reset the clamping and rotating mechanism 2 and the surface grinding mechanism 3, and then take out the hub.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (3)

1. The utility model provides an automobile wheel hub makes surface treatment processing machinery, includes workstation (1), centre gripping slewing mechanism (2) and surface grinding machanism (3), its characterized in that: a clamping rotating mechanism (2) is arranged in the middle of the upper portion of the workbench (1), surface polishing mechanisms (3) are arranged above and outside the clamping rotating mechanism (2), and the surface polishing mechanisms (3) are fixedly arranged on the workbench (1); wherein:

the clamping and rotating mechanism (2) comprises a rotating disc (21), a rotating groove (22), a rotating ring (23), a clamping branch chain (24), a clamping groove (25), a limiting groove (26), a clamping block (27), a driving rod (28), a driving groove (29), a limiting block (210), a rotating shaft (211) and a rotating motor (212), wherein the middle part of the workbench (1) is provided with the vertical rotating shaft (211) through a bearing, the upper end of the rotating shaft (211) is fixedly provided with the rotating disc (21), the lower end of the rotating shaft (211) is connected with the output end of the rotating motor (212) through a coupler, the rotating motor (212) is arranged on the lower end surface of the workbench (1) through a motor base, the rotating disc (21) is internally provided with the annular rotating groove (22), the rotating ring (23) is rotatably arranged in the rotating groove (22) through the bearing, the end surface of the rotating ring (23) is uniformly provided with the arc-shaped driving groove (29) along the circumferential direction thereof, the upper end face of the rotating disc (21) is provided with a clamping groove (25) along the central circumferential direction, the clamping groove (25) is communicated with the rotating groove (22), a clamping block (27) is arranged in the clamping groove (25) in a sliding manner, the lower end of the clamping block (27) is fixedly connected with a driving rod (28), the driving rod (28) is positioned in a driving groove (29), a limiting groove (26) communicated with the rotating groove (22) is formed in the rotating disc (21), the limiting groove (26) is positioned at the lower end of the rotating groove (22) and corresponds to the clamping groove (25) one by one, the lower end of the driving rod (28) is fixedly connected with a limiting block, the limiting block (210) is arranged in the limiting groove (26) in a sliding manner, and the outer side wall of the rotating ring (23) is provided with a clamping branch chain (24);

the clamping branched chain (24) comprises an annular groove (241), an annular rack (242), a clamping gear (243), a connecting shaft (244), a groove (245) and a hexagon socket head (246), wherein the annular groove (241) is formed in the outer side wall of the rotating ring (23), the annular rack (242) is arranged in the annular groove (241), the clamping gear (243) is connected with the rack in an external meshing manner, the clamping gear (243) is fixedly sleeved on the connecting shaft (244), the connecting shaft (244) is installed in the rotating disc (21) through a bearing, the groove (245) is formed in the outer side wall of the rotating disc (21), the hexagon socket head (246) is arranged in the groove (245), and the hexagon socket head (246) is fixedly connected with the other end of the connecting shaft (244);

the surface polishing mechanism (3) comprises an L-shaped plate (31), an external polishing branched chain (32), an internal polishing block (33), a connecting block (34), a supporting rod (35), a sliding block (36), a fixing rod (37), a fixing block (38), a double-shaft screw (39), a polishing motor (310) and a lifting cylinder (311), wherein the L-shaped plate (31) is fixedly installed at the rear side of the upper end surface of the workbench (1), the lifting cylinder (311) is fixedly installed at the top of the L-shaped plate (31), the fixing block (38) is fixedly connected to the lower end of the lifting cylinder (311), the fixing rods (37) are symmetrically installed at the two sides of the lower end of the fixing block (38), the lower ends of the fixing rods (37) are also fixedly installed on the fixing block (38), the sliding blocks (36) are symmetrically distributed between the two fixing blocks (38) up and down, and the two ends of the sliding block (36) are slidably sleeved on the fixing rod (37), two the middle part department is vertical to be provided with biax screw rod (39) between fixed block (38), biax screw rod (39) lower extreme passes through the bearing and installs on fixed block (38), biax screw rod (39) upper end is connected with grinding motor (310) output through the shaft coupling, grinding motor (310) is installed on fixed block (38) through the motor cabinet, two sliding block (36) are established on biax screw rod (39) through the screw-thread fit mode cover, bracing piece (35) are installed to the rotation from top to bottom on sliding block (36) both ends outer wall, sliding block (36) bilateral direction is gone up the symmetry and is provided with connecting block (34), top the bracing piece (35) other end rotation at sliding block (36) both ends is installed in connecting block (34) upper end, below bracing piece (35) other end rotation at connecting block (34) both ends is installed at connecting block (34) lower extreme, an inner polishing block (33) is fixedly mounted on the end face, far away from the sliding block (36), of the connecting block (34), the upper end of the inner polishing block (33) is of an arc-shaped structure, and an outer polishing branch chain (32) is arranged on the workbench (1) in the direction of the outer side of the rotating disc (21);

the external grinding branch chain (32) comprises an external grinding block (321), an L-shaped rod (322), a moving block (323), a moving groove (324), a circular ring (325) and a driving component (326), the moving groove (324) is uniformly formed in the upper end surface of the workbench (1) along the outer side direction of the rotating disc (21) in the circumferential direction, the moving block (323) is arranged in the moving groove (324) in a sliding mode, an annular mounting groove is formed in the workbench (1) and communicated with the moving groove (324), the circular ring (325) is rotatably mounted in the moving groove (324), a plane thread groove is formed in the upper end surface of the circular ring (325), threads matched with the plane thread groove are formed in the lower end surface of the moving block (323), the inner side of the circular ring (325) is matched with the driving component (326), the L-shaped rod (322) is fixedly connected to the upper end of the moving block (323), the top of the L-shaped rod (322) facing the rotating disc (21) is fixedly provided with an outer grinding block (321), and the upper end and the lower end of one side, facing the hub, of the outer grinding block (321) are both arc-shaped surfaces matched with the end part of the outer wall of the hub;

drive assembly (326) including drive gear (3261), drive shaft (3262) and driving motor (3263), annular rack has been seted up to ring (325) inside wall, ring (325) are connected through rack and drive gear (3261) looks meshing, the fixed cover of drive gear (3261) is established on drive shaft (3262), drive shaft (3262) is installed in workstation (1) through the bearing, drive shaft (3262) lower extreme is connected with driving motor (3263) output through the shaft coupling, driving motor (3263) passes through the motor cabinet and installs terminal surface under workstation (1).

2. The automobile hub manufacturing surface treatment processing machine according to claim 1, characterized in that: dovetail grooves (3231) are formed in two sides of the moving block (323), and dovetail blocks (3232) matched with the dovetail grooves (3231) are arranged on two sides of the moving block (324).

3. The automobile hub manufacturing surface treatment processing machine according to claim 1, characterized in that: the rotary table is characterized in that an annular block (21a) is fixedly mounted on the lower end face of the rotary table (21), the annular block (21a) is of a T-shaped structure, an annular T-shaped groove is formed in the upper end face of the working table (1), and the annular block (21a) is in sliding fit with the T-shaped groove.

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