Drilling and tapping all-in-one machine for aluminum alloy hub machining

Abstract

The invention relates to the field of hub machining, in particular to a drilling and tapping all-in-one machine for aluminum alloy hub machining. The drilling and tapping all-in-one machine comprises a machine tool base, a clamping unit arranged on the machine tool base and a machining unit arranged on the clamping unit. The thin wall of the hub is axially supported or clamped by matching with a pressing head, so that the stability of the clamped part is enhanced, the deformation of the thin wall is inhibited through reverse jacking and supporting, the bulge height of the drilling part of the drill bit is reduced, and the drill bit and the screw tap are driven by the movable plate to linearly move up and down; through one-time complete movement stroke of'bottom-top-bottom ', drilling and tapping operation of a machining position on a hub is achieved, the takt of a single piece is shortened, the loss of a screw tap is reduced, and the service life of the screw tap is prolonged.

Description

Technical Field

[0001] This invention relates to the field of wheel hub processing, and in particular to a drilling and tapping integrated machine for processing aluminum alloy wheel hubs. Background Technology

[0002] In the manufacturing process of electric scooter wheel hubs, drilling and tapping operations are usually required according to manufacturing and assembly requirements to facilitate the addition of accessories. Aluminum alloy has become the mainstream material for manufacturing scooter wheel hubs due to its light weight and high strength. However, the side wall thickness of scooter wheel hubs is usually only 2.5-3.0 mm, which is a typical thin-walled part. When existing drilling and tapping equipment drills, the drill bit will generate axial thrust on the wheel hub wall, and the material around the hole will be pushed outward, resulting in a "bulge" or local outward bulge on the exit side. This leads to problems such as excessive thread perpendicularity after tapping and easy loosening of bolts later. In addition, existing solutions have added servo slides and floating fixtures to the machine tool, but the serial method of drilling first and then tapping is still used, which has a long processing cycle and cannot completely eliminate thin-wall deformation. Summary of the Invention

[0003] In view of the problems existing in the above or prior art, when drilling, the drill bit will generate axial thrust on the hub wall, and the material around the hole will be pushed outward, resulting in a "bulge" or local outward bulge on the exit side, which leads to problems such as excessive deviation of thread perpendicularity after tapping and easy loosening of bolts in the later stage, the present invention is proposed.

[0004] Therefore, the purpose of this invention is to provide a drilling and tapping integrated machine for machining aluminum alloy wheel hubs.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a machine tool base, a clamping unit mounted on the machine tool base, and a machining unit mounted on the clamping unit; the clamping unit includes a support assembly mounted on the machine tool base, a support plate mounted on the support assembly, and a clamping assembly mounted on the support plate; the machining unit includes a first support plate mounted on the machine tool base, a fixing rod mounted on the first support plate, a second support plate mounted on the fixing rod, and a machining assembly mounted on the second support plate; the clamping assembly, in conjunction with the support plate and the support assembly, positions and clamps the wheel hub, causing the wheel hub to rotate; the machining assembly provides reverse support around the area to be drilled on the wheel hub; and, in conjunction with the rapid linear motion of the machining assembly, drilling and tapping operations are performed on the target location.

[0006] As a preferred embodiment of the drilling and tapping integrated machine for aluminum alloy wheel hub processing of the present invention, the support assembly includes a servo motor mounted on the machine tool base, a lead screw mounted on the machine tool base for cooperating with the servo motor, a support slide rod mounted on the machine tool base, and a connecting block mounted on the lead screw and the support slide rod; the lead screw and the connecting block are connected by threads, and the support slide rod and the connecting block are slidably connected; a support plate is fixedly mounted on the connecting block.

[0007] As a preferred embodiment of the drilling and tapping integrated machine for aluminum alloy wheel hub processing of the present invention, the clamping assembly includes a lifting seat disposed on a support plate, a central rod disposed on the lifting seat, a centering block one disposed at the bottom of the central rod, a centering block two disposed on the central rod, a lead screw two disposed on the central rod, and a connecting sleeve disposed on the centering block two for cooperating with the lead screw two.

[0008] As a preferred embodiment of the drilling and tapping integrated machine for processing aluminum alloy wheel hubs of the present invention, the centering block one is generally in the shape of a frustum that is narrow at the top and wide at the bottom; the centering block two is movably disposed on the central rod, and the centering block two is similar in shape to the centering block one, with the narrower end passing through the wheel hub first.

[0009] In a preferred embodiment of the drilling and tapping machine for aluminum alloy wheel hub processing of the present invention, a motor is provided in the lifting seat to drive the central rod to rotate.

[0010] As a preferred embodiment of the drilling and tapping integrated machine for processing aluminum alloy wheel hubs of the present invention, the processing component includes a fixed plate on the support plate 2, a movable plate slidably disposed on the fixed plate, a hydraulic cylinder disposed on the fixed plate, the output end of the hydraulic cylinder being fixedly connected to the movable plate, a connecting member disposed on the hydraulic cylinder, a drill bit and a tap disposed on the connecting member, and a stabilizing member disposed on the fixed plate.

[0011] In a preferred embodiment of the drilling and tapping machine for aluminum alloy wheel hub processing of the present invention, the sliding path of the movable plate on the fixed plate is consistent with the driving direction of the hydraulic cylinder.

[0012] As a preferred embodiment of the drilling and tapping integrated machine for aluminum alloy wheel hub processing of the present invention, the connecting parts include: a mounting block disposed on the movable plate, a lead screw three disposed on the movable plate, a support slide rod three disposed on the movable plate, a threaded sleeve disposed on the mounting block and connected to the lead screw three by threads, an external gear ring disposed on the threaded sleeve, and a worm gear disposed on the mounting block and cooperating with the threaded sleeve.

[0013] As a preferred embodiment of the drilling and tapping integrated machine for aluminum alloy wheel hub processing of the present invention, the mounting block is slidably connected to the support slide rod three, and the mounting block is provided with two sets on the lead screw three. The two sets of mounting blocks are respectively provided with drill bits and taps, and the movement paths of the drill bits and taps are kept on the same straight line.

[0014] As a preferred embodiment of the drilling and tapping integrated machine for aluminum alloy wheel hub processing of the present invention, the stabilizing component includes a second servo motor mounted on a fixed plate, a bidirectional lead screw mounted on the drive end of the second servo motor, a second support slide rod mounted on the fixed plate, and a connecting plate slidably mounted on the fixed plate and the movable plate. The connecting plate is slidably connected to the second support slide rod, and the connecting plate is threadedly connected to the bidirectional lead screw. A set of two ends of the bidirectional lead screw are respectively provided, and a pressure head is provided on the connecting plate.

[0015] The beneficial effects of the integrated drilling and tapping machine for aluminum alloy wheel hub processing of the present invention are as follows: The present invention achieves centering and clamping of wheel hubs of different models through centering block one and centering block two, and then uses a pressure head to provide axial support or clamping for the thin wall of the wheel hub, thereby enhancing the stability of the clamping part. The reverse top support suppresses the deformation of the thin wall and reduces the bulge height of the drilling part of the drill bit. Then, the movable plate drives the drill bit and tap to move up and down in a linear motion. Through one complete "down-up-down" movement, drilling and tapping operations on the processing position on the wheel hub are realized, shortening the cycle time of a single piece, reducing tap wear, and increasing tap life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a drilling and tapping machine for machining aluminum alloy wheels.

[0018] Figure 2 This is a side view of a drilling and tapping machine for machining aluminum alloy wheels.

[0019] Figure 3 A schematic diagram of the support components for a drilling and tapping machine used for machining aluminum alloy wheels.

[0020] Figure 4 A schematic diagram of the clamping assembly of a drilling and tapping machine for machining aluminum alloy wheels.

[0021] Figure 5 This is a schematic diagram of the processing components of a drilling and tapping machine for machining aluminum alloy wheels.

[0022] Figure 6 A schematic diagram of the stabilizing component of a drilling and tapping machine for machining aluminum alloy wheels.

[0023] Figure 7A schematic diagram of the connecting parts for a drilling and tapping machine used for machining aluminum alloy wheels.

[0024] Figure 8 A cross-sectional structural diagram of the mounting block for a drilling and tapping machine used for machining aluminum alloy wheels.

[0025] In the diagram: 1. Machine tool base; 2. Clamping unit; 21. Support assembly; 211. Servo motor 1; 212. Lead screw 1; 213. Support slide rod 1; 214. Connecting block; 22. Support plate; 23. Clamping assembly; 231. Lifting seat; 232. Center rod; 233. Centering block 1; 234. Centering block 2; 235. Lead screw 2; 236. Connecting sleeve; 3. Machining unit; 31. Support plate 1; 32. Fixing rod; 33. Support plate 2; 34. Machining assembly; 341. Fixed plate; 342. Movable plate; 343. Hydraulic cylinder; 344. Connecting piece; 3441. Mounting block; 3442. Lead screw three; 3443. Support slide rod three; 3444. Threaded sleeve; 3445. External gear ring; 3446. Worm gear; 345. Drill bit; 346. Tap; 347. Stabilizer; 3471. Servo motor two; 3472. Bidirectional lead screw; 3473. Support slide rod two; 3474. Connecting plate; 3475. Press head; 4. Hub. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Example 1, referring to Figure 1 and Figure 2 This is the first embodiment of the present invention. This embodiment provides a drilling and tapping integrated machine for processing aluminum alloy wheel hubs. It includes a machine tool base 1, which serves to support the entire equipment; a clamping unit 2 set on the machine tool base 1, which is used to receive and clamp the processing unit 3 and center and clamp the wheel hub 4 to facilitate drilling and tapping operations; and the processing unit 3 set on the clamping unit 2, which is used to further stabilize the position to be processed on the wheel hub 4 and perform drilling and tapping operations. The clamping unit 2 includes a support assembly 21 set on the machine tool base 1 for receiving and releasing the hub 4 to facilitate loading and unloading of the hub 4; a support plate 22 set on the support assembly 21 for supporting and connecting; and a clamping assembly 23 set on the support plate 22 for centering and clamping the hub 4 placed on the support plate 22 to maintain the stability of the hub 4 during processing. The processing unit 3 includes a support plate 31 set on the machine tool base 1 for supporting, a fixing rod 32 set on the support plate 31 for connecting, a support plate 33 set on the fixing rod 32 for supporting, and a processing component 34 set on the support plate 33 for drilling and tapping the hub 4. The wheel hub 4 is positioned and clamped by the clamping assembly 23 in conjunction with the support plate 22 and the support assembly 21, which drives the wheel hub 4 to rotate. The machining assembly 34 forms a reverse support around the position to be drilled on the wheel hub 4. With the rapid linear motion of the machining assembly 34, drilling and tapping operations are performed on the target position.

[0028] In summary, firstly, the support plate 22 is pushed outward by the support component 21, fully exposing the support plate 22. At this time, the wheel hub 4 is placed on the support plate 22 by the clamping component 23, and then the clamping component 23 centers and clamps the wheel hub 4 to keep it in a stable neutral state. At this time, the support component 21 moves the support plate 22 closer to the processing component 34. When the support plate 22 moves to a suitable position, the processing component 34 provides counter-support on both sides of a position to be processed on the wheel hub 4 to reduce the degree of deformation during drilling. At this time, the processing component 34 moves up and down, completing the drilling and tapping operation at the target position in one movement. After one movement is completed, the processing component 34 releases the counter-support on the wheel hub 4. At this time, the clamping component 23 controls the wheel hub 4 to rotate a certain angle so that the next position to be processed is in the processing direction of the processing component 34. The above working process of the processing component 34 is repeated to achieve continuous drilling and tapping operation on the wheel hub 4.

[0029] Example 2, refer to Figures 1-4 This is the second embodiment of the present invention. Unlike the previous embodiment, it provides a specific structure for the clamping unit 2 in the drilling and tapping integrated machine for aluminum alloy wheel hub processing. Compared to embodiment 1, the support assembly 21 further includes a servo motor 211 mounted on the machine tool base 1 to provide power; a lead screw 212 mounted on the machine tool base 1 to cooperate with the servo motor 211 for rotation in conjunction with the drive of the servo motor 211; a support slide rod 213 mounted on the machine tool base 1 for sliding support; and a connecting block 214 mounted on the lead screw 212 and the support slide rod 213 for connection and support. The lead screw 212 is connected to the connecting block 214 by a thread, and the support slide rod 213 is slidably connected to the connecting block 214. The lead screw 212 rotates in conjunction with the servo motor 211, which drives the connecting block 214 to move back and forth on the support slide rod 213. The support plate 22 is fixedly mounted on the connecting block 214 and is used to move back and forth in conjunction with the connecting block 214. This facilitates the loading and unloading of the wheel hub 4.

[0030] The clamping assembly 23 includes a lifting seat 231 mounted on the support plate 22 for support, and a lifting structure on the lifting seat 231 for small-range lifting movements. The lifting structure is existing technology and will not be described in detail here. A central rod 232 mounted on the lifting seat 231 is used for positioning and support. A first centering block 233 is mounted at the bottom of the central rod 232. A second centering block 234 is mounted on the central rod 232. The first centering block 233 works with the second centering block 234 to neutrally clamp the wheel hub and keep the wheel hub 4 horizontal. A second lead screw 235 is mounted on the central rod 232. A connecting sleeve 236 is mounted on the second centering block 234 to work with the second lead screw 235. The second lead screw 235 works with the connecting sleeve 236 to move the second centering block 234 up and down on the central rod 232, and works with the first centering block 233 to horizontally clamp or release the wheel hub 4 on the central rod 232.

[0031] Among them, the centering block 233 is shaped like a frustum with a narrow top and a wide bottom. This design allows the centering block 233 to be adapted to different models of wheel hubs. Centering block 234 is movably mounted on center rod 232. Centering block 234 is similar in shape to centering block 1 233. The cross-sectional diameter of one end of centering block 234 and centering block 1 233 is smaller than the mounting hole diameter of the wheel hub, while the cross-sectional diameter of the other end is larger than the mounting hole diameter of the wheel hub. The narrower end passes through the wheel hub 4 first. With this arrangement, when centering block 234 and centering block 1 233 are clamped, the wheel hub remains coaxial with center rod 232 through the contact between the side walls of centering block 234 and centering block 1 233 and the inner wall of the mounting hole of the wheel hub. This allows centering block 234 to cooperate with centering block 1 233 to achieve horizontal clamping of wheel hubs of different models.

[0032] The lifting seat 231 is equipped with a motor to drive the center rod 232 to rotate, which is used to cooperate with the centering block 1 233 and centering block 234 to drive the hub 4 to rotate, and cooperate with the processing component 34 to achieve continuous processing.

[0033] The rest of the structure is the same as in Example 1.

[0034] In summary, when drilling is required on the wheel hub 4, the servo motor 211 is first started, driving the lead screw 212 to rotate. The connecting block 214, in conjunction with the rotation of the lead screw 212, moves the support plate 22 outward, fully exposing the space around the centering block 233. Then, the connecting sleeve 236 is rotated, and the lead screw 235 causes the centering block 234 to move away from the center rod 232. The wheel hub 4 is then placed on the lifting seat 231 via the center rod 232, bringing the centering block 233 into contact with itself. Next, the centering block 234 is fitted onto the center rod 232. The connecting sleeve 236 and the lead screw 235 then cause the centering block 234 to move downward, with its bottom first entering the wheel hub. In step 4, the outer wall of centering block 234 is fully in contact with the hub 4. At this time, the outer wall of centering block 1 233 is fully in contact with the hub 4 under the pressure of centering block 234. At this time, the center rod 232 is in the center position of the hub 4. At this time, the hub 4 maintains a horizontal and stable state under the action of centering block 1 233 and centering block 234. At this time, servo motor 1 211 starts again, driving screw 1 212 to reverse, and driving hub 4 to move through support plate 22. At this time, the height of hub 4 can be adjusted by lifting seat 231 to keep hub 4 in a state that is convenient for processing. At this time, processing component 34 starts to perform reverse support and drilling operations on the position to be processed on hub 4. In conjunction with the motor, the hub 4 is rotated through center rod 232 to perform continuous drilling and tapping processing.

[0035] Example 3, referring to Figures 1-8 This is the second embodiment of the present invention. Unlike the previous embodiment, it provides a specific structure for the processing unit 3 in the drilling and tapping integrated machine for aluminum alloy wheel hub processing. Compared to embodiment 2, the processing component 34 further includes a fixed plate 341 on the support plate 33, serving a fixing and connecting function; a movable plate 342 slidably disposed on the fixed plate 341, serving a connecting function; a hydraulic cylinder 343 disposed on the fixed plate 341, used to provide power to drive the movable plate 342 to move up and down; the output end of the hydraulic cylinder 343 is fixedly connected to the movable plate 342; a connecting member 344 disposed on the hydraulic cylinder 343; a drill bit 345 and a tap 346 disposed on the connecting member 344; the connecting member 344 is used to install and connect the drill bit 345 and the tap 346, cooperating with the up and down movement of the movable plate 342 to perform drilling and tapping processing on the wheel hub 4; and a stabilizing member 347 disposed on the fixed plate 341, used to provide counter-support for the position to be processed on the wheel hub 4, reducing the degree of deformation of the processing position during processing.

[0036] The sliding path of the movable plate 342 on the fixed plate 341 is consistent with the driving direction of the hydraulic cylinder 343. With this setting, the movable plate 342 slides back and forth on the fixed plate 341 under the drive of the hydraulic cylinder 343.

[0037] The connector 344 includes a mounting block 3441 mounted on the movable plate 342 for connection; a lead screw 3442 mounted on the movable plate 342 for support; a support slide bar 3443 mounted on the movable plate 342 for limiting sliding; a threaded sleeve 3444 rotatably mounted on the mounting block 3441 and threadedly connected to the lead screw 3442 for rotation, driving the mounting block 3441 to move back and forth on the lead screw 3442; an external gear ring 3445 mounted on the threaded sleeve 3444; and a worm gear 3446 mounted on the mounting block 3441 and engaging with the threaded sleeve 3444. The worm gear 3446 rotates to drive the external gear ring 3445, thereby driving the threaded sleeve 3444 to rotate.

[0038] The mounting block 3441 is slidably connected to the support slide bar 3443. The mounting block 3441 is provided with two sets on the lead screw 3442. The two sets of mounting blocks 3441 are respectively provided with drill bit 345 and tap 346. The moving paths of drill bit 345 and tap 346 are kept on the same straight line. With this setting, the drill bit 345 and tap 346 can move in a "down-up-down" stroke on the connecting piece 344 in conjunction with the movable plate 342, so that drilling and tapping operations can be performed on a position to be processed on the wheel hub 4, thus speeding up the drilling and tapping cycle.

[0039] The stabilizing component 347 includes a second servo motor 3471 mounted on a fixed plate 341 to provide power; a bidirectional lead screw 3472 mounted on the drive end of the second servo motor 3471 to rotate in coordination with the drive of the second servo motor 3471; a second support slide rod 3473 mounted on the fixed plate 341 to provide sliding limit; a connecting plate 3474 slidably mounted on the fixed plate 341 and the movable plate 342, the connecting plate 3474 being slidably connected to the second support slide rod 3473 and threadedly connected to the bidirectional lead screw 3472; a set of two ends of the bidirectional lead screw 3472 for opening or closing in coordination with the rotation of the bidirectional lead screw 3472; and a pressure head 3475 mounted on the connecting plate 3474 to provide counter-support on both sides of the area to be processed on the hub 4 in coordination with the opening or closing of the connecting plate 3474, thereby suppressing deformation of the thin wall of the hub 4 during drilling by the drill bit 345.

[0040] The rest of the structure is the same as in Example 2.

[0041] In summary, after the lifting seat 231 moves the wheel hub 4 to be processed closer to the processing component 34 to a suitable position, the servo motor 3471 is activated, driving the bidirectional lead screw 3472 to rotate. At this time, the pressing heads 3475 move away from each other under the action of the connecting plate 3474 until the other side of the hole drilled by the drill bit 345 on the thin wall of the wheel hub 4 is supported. Then, the worm gear 3446 is rotated, driving the threaded sleeve 3444 to rotate through the external gear ring 3445. Under the action of the lead screw 3442, the position and height of the drill bit 345 and the tap 346 are adjusted, and the drill bit... Adjust drill bit 345 and tap 346 to the position to be machined near the hub 4. At this time, drill bit 345 and tap 346 are activated, and hydraulic cylinder 343 drives mounting block 3441 to move up and down via movable plate 342. Drill bit 345 and tap 346 follow mounting block 3441. Drill bit 345 approaches the position to be machined on hub 4 and drills a hole. Since mounting block 3441 is slidably connected to support slide rod 3443, when worm gear 3446 engages with external gear ring 3445, mounting block 3441 is positioned on support slide rod 3443. When the position on block 2 is locked, drill bit 345 and tap 346 can work stably on mounting block 3441. At this time, pressure head 3475 provides counter-support to the other side of the position to be machined on hub 4, suppressing the deformation of the machining position when drill bit 345 drills. When drill bit 345 descends into position with mounting block 3441, a hole is drilled in hub 4. At this time, mounting block 3441 drives drill bit 345 to move upward through hydraulic cylinder 343. At this time, tap 346 moves upward to tap the hole. When the output end of tap 346 passes through the upper end of the hole, the hydraulic cylinder 343 drives the movable plate 342 to move down and return to the working posture. At this time, the drill bit 345 and tap 346 are not in contact with the hub 4. At this time, the servo motor 3471 drives the bidirectional lead screw 3472 to reverse and open the support of the hub 4. At this time, the center rod 232 drives the hub 4 to rotate through the clamping of the centering block 233 and the centering block 234 until the next working position rotates to the bottom of the drill bit 345. Repeating the above process can realize continuous drilling and tapping operations.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A drilling and tapping integrated machine for machining aluminum alloy wheel hubs, characterized in that: It includes a machine tool base (1), a clamping unit (2) disposed on the machine tool base (1), and a machining unit (3) disposed on the clamping unit (2); The clamping unit (2) includes a support assembly (21) disposed on the machine tool base (1), a support plate (22) disposed on the support assembly (21), and a clamping assembly (23) disposed on the support plate (22). The processing unit (3) includes a support plate 1 (31) disposed on the machine tool base (1), a fixing rod (32) disposed on the support plate 1 (31), a support plate 2 (33) disposed on the fixing rod (32), and a processing component (34) disposed on the support plate 2 (33). The hub (4) is positioned and clamped by the clamping assembly (23) in conjunction with the support plate (22) and the support assembly (21), causing the hub (4) to rotate. The machining assembly (34) forms a reverse support around the hole to be drilled on the hub (4), and with the rapid linear motion of the machining assembly (34), drilling and tapping operations are performed on the target position.

2. The drilling and tapping integrated machine for machining aluminum alloy wheel hubs as described in claim 1, characterized in that: The support assembly (21) includes a servo motor (211) mounted on the machine tool base (1), a lead screw (212) mounted on the machine tool base (1) for cooperating with the servo motor (211), a support slide rod (213) mounted on the machine tool base (1), and a connecting block (214) mounted on the lead screw (212) and the support slide rod (213). The lead screw (212) is connected to the connecting block (214) by a thread, and the support slide rod (213) is slidably connected to the connecting block (214); The support plate (22) is fixedly mounted on the connecting block (214).

3. The drilling and tapping integrated machine for machining aluminum alloy wheel hubs as described in claim 2, characterized in that: The clamping assembly (23) includes a lifting seat (231) disposed on the support plate (22), a center rod (232) disposed on the lifting seat (231), a centering block one (233) disposed at the bottom of the center rod (232), a centering block two (234) disposed on the center rod (232), a lead screw two (235) disposed on the center rod (232), and a connecting sleeve (236) disposed on the centering block two (234) for cooperating with the lead screw two (235).

4. The drilling and tapping integrated machine for machining aluminum alloy wheel hubs as described in claim 3, characterized in that: Centering block 1 (233) is shaped like a frustum, narrower at the top and wider at the bottom; Centering block two (234) is movably mounted on the center rod (232). Centering block two (234) has a similar overall shape to centering block one (233), with the narrower end passing through the hub (4) first.

5. The drilling and tapping integrated machine for machining aluminum alloy wheel hubs as described in claim 4, characterized in that: The lifting platform (231) is equipped with a motor to drive the center rod (232) to rotate.

6. The drilling and tapping integrated machine for machining aluminum alloy wheel hubs as described in claim 5, characterized in that: The processing component (34) includes a fixed plate (341) on the support plate (33), a movable plate (342) slidably disposed on the fixed plate (341), a hydraulic cylinder (343) disposed on the fixed plate (341), the output end of the hydraulic cylinder (343) being fixedly connected to the movable plate (342), a connector (344) disposed on the hydraulic cylinder (343), a drill bit (345) and a tap (346) disposed on the connector (344), and a stabilizer (347) disposed on the fixed plate (341).

7. The drilling and tapping integrated machine for machining aluminum alloy wheel hubs as described in claim 6, characterized in that: The sliding path of the movable plate (342) on the fixed plate (341) is consistent with the driving direction of the hydraulic cylinder (343).

8. The drilling and tapping integrated machine for machining aluminum alloy wheel hubs as described in claim 7, characterized in that: The connector (344) includes a mounting block (3441) on the movable plate (342), a lead screw (3442) on the movable plate (342), a support slide rod (3443) on the movable plate (342), a threaded sleeve (3444) on the mounting block (3441) and connected to the lead screw (3442) by threads, an external gear ring (3445) on the threaded sleeve (3444), and a worm gear (3446) on the mounting block (3441) that mates with the threaded sleeve (3444).

9. The drilling and tapping integrated machine for machining aluminum alloy wheel hubs as described in claim 8, characterized in that: The mounting block (3441) is slidably connected to the support slide bar three (3443). The mounting block (3441) is provided with two sets on the lead screw three (3442). The two sets of mounting blocks (3441) are respectively provided with drill bit (345) and tap (346). The moving paths of drill bit (345) and tap (346) are kept on the same straight line.

10. The drilling and tapping integrated machine for machining aluminum alloy wheel hubs as described in claim 9, characterized in that: The stabilizer (347) includes a second servo motor (3471) mounted on a fixed plate (341), a bidirectional lead screw (3472) mounted on the drive end of the second servo motor (3471), a second support slide rod (3473) mounted on the fixed plate (341), and a connecting plate (3474) slidably mounted on the fixed plate (341) and the movable plate (342). The connecting plate (3474) is slidably connected to the second support slide rod (3473), and the connecting plate (3474) is threadedly connected to the bidirectional lead screw (3472). A set of two ends of the bidirectional lead screw (3472) are respectively provided, and a pressing head (3475) is provided on the connecting plate (3474).

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