Aluminum alloy wheel hub edge rounding device and method

Abstract

The application relates to an aluminum alloy wheel hub edge rounding device and method, and belongs to the technical field of wheel hub rounding. The device comprises a wheel hub horizontal rotation driving device, a wheel hub swing driving device, a wheel hub horizontal movement driving device, an ultrasonic impact rounding device and an impact head vertical movement driving device. The wheel hub swing driving device is connected with the wheel hub horizontal rotation driving device, the wheel hub horizontal movement driving device is connected with the wheel hub swing driving device, the ultrasonic impact rounding device is arranged above the wheel hub horizontal rotation driving device, the impact head vertical movement driving device is connected with the ultrasonic impact rounding device, the ultrasonic impact rounding device comprises an ultrasonic impact support, an ultrasonic impact rounding mechanism, an impact head horizontal rotation driving mechanism and an impact head vertical rotation driving mechanism, and the ultrasonic impact rounding mechanism comprises an ultrasonic transducer, an ultrasonic amplitude transformer and a continuous variable-diameter impact head. The application can eliminate the machining defects of the wheel hub edge, reduce stress concentration and form high-amplitude residual stress.

Description

Technical Field

[0001] This invention belongs to the field of wheel hub rounding technology, specifically relating to a device and method for rounding the edges of aluminum alloy wheel hubs. Background Technology

[0002] A wheel hub, also called a rim, is a cylindrical component mounted centrally on an axle that supports the tire. Common automotive wheel hubs include steel and aluminum alloy hubs. Aluminum alloy hubs are widely used in passenger vehicles due to their lightweight nature and diverse, aesthetically pleasing designs. However, aluminum alloy hubs are prone to burrs and microscopic defects during machining, especially on three-dimensional curved surfaces where noticeable machining marks can occur, leading to significant stress concentration. To improve the fatigue performance of wheel hubs, appropriate processing methods are needed for the edges of aluminum alloy hubs. Currently, most methods involve chamfering and polishing to remove some burrs. However, these processes can still leave scratches, discontinuous cutting, or localized cuts or edges during machining, which can also cause stress concentration, induce fatigue cracks, and reduce the fatigue performance of the wheel hub. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an aluminum alloy wheel hub edge rounding device and method to solve or improve the defects existing in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a device for rounding the edges of an aluminum alloy wheel hub, comprising:

[0005] A wheel hub horizontal rotation drive device is used to drive the wheel hub to rotate horizontally;

[0006] A hub swing drive device is used to drive the hub to swing up and down; the output end of the hub swing drive device is fixedly connected to the fixed end of the hub horizontal rotation drive device.

[0007] A wheel hub horizontal movement drive device is used to drive the wheel hub to move horizontally; the output end of the wheel hub horizontal movement drive device is fixedly connected to the fixed end of the wheel hub swing drive device;

[0008] An ultrasonic impact rounding device is used to perform ultrasonic impact processing on the edges of a wheel hub; the ultrasonic impact rounding device is located above the horizontal rotation drive device of the wheel hub.

[0009] A vertical movement drive device for impact head is used to drive the ultrasonic impact rounding device to move vertically; the output end of the vertical movement drive device for impact head is fixedly connected to the fixed end of the ultrasonic impact rounding device.

[0010] The ultrasonic impact rounding device includes:

[0011] An ultrasonic impact support, which is fixedly connected to the output end of the vertical movement drive device of the impact head;

[0012] An ultrasonic impact rounding mechanism is installed on an ultrasonic impact support. The ultrasonic impact rounding mechanism includes an ultrasonic transducer, an ultrasonic amplitude transformer, and a continuously variable diameter impact head. The ultrasonic transducer is electrically connected to an ultrasonic generator. The lower end of the ultrasonic transducer is fixedly connected to the upper end of the ultrasonic amplitude transformer, and the lower end of the ultrasonic amplitude transformer is vertically rotatably connected to the continuously variable diameter impact head.

[0013] The impact head horizontal rotation drive mechanism is used to drive the continuously variable diameter impact head to rotate horizontally to adjust to the required orientation;

[0014] The vertical rotation drive mechanism for the impact head is used to drive the continuously variable diameter impact head to rotate vertically to adjust to the required fillet radius.

[0015] Preferably, the ultrasonic impact rounding mechanism is horizontally rotatably mounted on the ultrasonic impact support, and the impact head horizontal rotation drive mechanism is fixedly mounted on the ultrasonic impact support. The impact head horizontal rotation drive mechanism can drive the ultrasonic impact rounding mechanism to rotate horizontally.

[0016] Preferably, the ultrasonic transducer or ultrasonic amplitude transformer is horizontally rotatably mounted on the ultrasonic impact support, and the horizontal rotation drive mechanism of the impact head includes:

[0017] The fourth motor is fixedly mounted on the ultrasonic impact support;

[0018] The drive gear is coaxially fixedly mounted on the output end of the fourth motor;

[0019] The driven gear is coaxially fixed on the ultrasonic transducer or ultrasonic amplitude transformer and meshes with the driving gear.

[0020] Preferably, the vertical rotation drive mechanism of the impact head is fixedly mounted on the ultrasonic impact rounding mechanism, and the vertical rotation drive mechanism of the impact head includes:

[0021] Fifth motor;

[0022] The speed reducer has its input end fixedly connected to the output end of the fifth motor, and its output end fixedly connected to the rotating shaft of the continuously variable diameter impact head.

[0023] Preferably, the continuously variable diameter impact head includes a rotating body, with a rotating shaft at the center of both ends of the rotating body, and a rounded corner groove with a continuously varying radius is formed along the middle of the outer periphery of the rotating body.

[0024] Preferably, the hub horizontal rotation drive device includes:

[0025] The spindle box is fixedly mounted on the output end of the hub swing drive device;

[0026] The chuck is fixedly mounted on the output end of the spindle box and is used to hold the hub.

[0027] Preferably, the vertical movement drive device for the impact head includes:

[0028] The first motor is fixedly mounted on the frame;

[0029] A vertical lead screw is rotatably mounted on the frame at both ends; one end of the vertical lead screw is connected to the output end of the first motor for transmission.

[0030] A vertical ball nut assembly that mates with a vertical lead screw;

[0031] A vertical slide plate is fixedly connected to a vertical ball bearing nut assembly; the ultrasonic impact rounding device is fixedly installed on the vertical slide plate;

[0032] A vertical guide mechanism, located between the frame and the vertical slide, is used to guide the vertical slide to move smoothly vertically.

[0033] Preferably, the hub horizontal movement drive device includes:

[0034] A hub longitudinal translation drive mechanism is used to drive the hub to move longitudinally; the hub longitudinal translation drive mechanism includes:

[0035] Second motor;

[0036] A longitudinal lead screw, one end of which is connected to the output end of the second motor for transmission;

[0037] A longitudinal ball nut assembly that mates with a longitudinal lead screw;

[0038] Longitudinal slide plate, which is fixedly connected to longitudinal ball nut assembly;

[0039] The longitudinal guide mechanism is used to guide the longitudinal slide to move smoothly in the longitudinal direction;

[0040] A wheel hub lateral translation drive mechanism is used to drive the wheel hub to move laterally; the wheel hub lateral translation drive mechanism includes:

[0041] Third motor;

[0042] A horizontal lead screw, one end of which is connected to the output end of the third motor for transmission;

[0043] A transverse ball nut assembly that mates with a transverse lead screw;

[0044] A transverse slide plate, which is fixedly connected to a transverse ball nut assembly;

[0045] The lateral guide mechanism is used to guide the smooth lateral movement of the lateral slide.

[0046] The longitudinal or transverse slide plate is used as the output end of the hub horizontal movement drive device.

[0047] Preferably, the hub oscillation drive device includes:

[0048] A swing support is fixedly installed at the output end of the wheel hub horizontal movement drive device;

[0049] The swing component is rotatably mounted on a swing support;

[0050] The sixth motor is fixedly mounted on the swing support; the output end of the sixth motor is connected to the swing shaft of the swing component.

[0051] The present invention also provides a method for rounding the edges of aluminum alloy wheel hubs, using the aforementioned aluminum alloy wheel hub edge rounding device, comprising the following steps:

[0052] S1. Fix the hub to be rounded on the output end of the hub horizontal rotation drive device; adjust the horizontal position of the hub by the hub horizontal movement drive device, and adjust the height position of the ultrasonic impact rounding device by the impact head vertical movement drive device, so that the ultrasonic impact rounding device is aligned with the starting position of the rounding of the hub's edge, and complete the tool setting.

[0053] S2. Drive the wheel hub to rotate horizontally via a wheel hub horizontal rotation drive device;

[0054] S3. The vertical rotation drive mechanism drives the continuously variable diameter impact head to rotate vertically to adjust to the required fillet radius, and the ultrasonic impact filleting mechanism performs ultrasonic impact processing on the edge of the wheel hub.

[0055] S4. The continuously variable diameter impact head is driven to rotate horizontally by the horizontal rotation drive mechanism to adjust to the required position. The wheel hub is driven to swing up and down by the wheel hub swing drive device, and finally the rounding treatment of the wheel hub edge is completed.

[0056] Compared with the prior art, the present invention has the following beneficial effects: The present invention is ingeniously composed of a hub horizontal rotation drive device, a hub swing drive device, a hub horizontal movement drive device, an impact head vertical movement drive device, an impact head horizontal rotation drive mechanism, and an impact head vertical rotation drive mechanism to form a multi-axis aluminum alloy hub edge rounding device. It can continuously adjust the rounded radius and orientation of the continuously variable diameter impact head and the swing amplitude of the hub during ultrasonic impact processing. It has strong adaptability and can process continuously changing rounded curved surfaces. It can be regarded as a special tool of CNC machine tool, and ultrasonic impact rounding processing can be performed directly according to preset parameters, which is convenient and fast. This invention uses a high-frequency impact from a continuously variable diameter impact head to create a continuous transition surface on the wheel hub edge. Under the combined action of static load and ultrasonic impact load, the high-frequency impact on the wheel hub edge causes local plastic deformation, effectively eliminating micro-defects such as machining tool marks on the wheel hub edge, improving the surface quality of the formed surface, reducing stress concentration and forming high-amplitude residual stress, significantly improving the fatigue performance of the wheel hub and related areas. It combines the advantages of chipless processing, which includes local plastic forming, performance improvement and surface beautification, and is clean and efficient. Attached Figure Description

[0057] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on the drawings described below without creative effort.

[0058] Figure 1 This is a schematic diagram of the overall structure of the aluminum alloy wheel hub edge rounding device according to an embodiment of the present invention.

[0059] Figure 2 This is a partial structural schematic diagram of the aluminum alloy wheel hub edge rounding device according to an embodiment of the present invention.

[0060] Figure 3 This is a schematic diagram of the hub horizontal rotation drive device in an embodiment of the present invention.

[0061] Figure 4 This is a schematic diagram of the hub swing drive device in an embodiment of the present invention.

[0062] Figure 5 This is a schematic diagram of the wheel hub horizontal movement drive device in an embodiment of the present invention.

[0063] Figure 6 This is a schematic diagram of the hub longitudinal translation drive mechanism in an embodiment of the present invention.

[0064] Figure 7 This is a schematic diagram of the hub lateral translation drive mechanism in an embodiment of the present invention.

[0065] Figure 8 This is a schematic diagram of the ultrasonic impact rounding device in an embodiment of the present invention.

[0066] Figure 9 This is a schematic diagram of the structure of the continuously variable diameter impact head in an embodiment of the present invention. Figure 1 .

[0067] Figure 10 This is a schematic diagram of the structure of the continuously variable diameter impact head in an embodiment of the present invention. Figure 2 .

[0068] Figure 11 This is a schematic diagram of the vertical movement drive device for the impact head in an embodiment of the present invention.

[0069] Marked in the image:

[0070] 1. Frame; 2. Controller; 3. Hub;

[0071] 100. Hub horizontal rotation drive; 110. Spindle box; 120. Chuck;

[0072] 200. Hub swing drive device; 210. Swing support; 220. Swing component; 221. Active swing arm; 222. Driven swing arm; 230. Sixth motor;

[0073] 300. Horizontal movement drive device for wheel hub; 310. Longitudinal translation drive mechanism for wheel hub; 311. Second motor; 312. Longitudinal lead screw; 313. Longitudinal ball nut assembly; 314. Longitudinal slide plate; 315. Longitudinal guide mechanism; 3151. Longitudinal guide rail; 3152. Longitudinal slider; 320. Lateral translation drive mechanism for wheel hub; 321. Third motor; 322. Lateral lead screw; 323. Lateral ball nut assembly; 324. Lateral slide plate; 325. Lateral guide mechanism; 3251. Lateral guide rail; 3252. Lateral slider;

[0074] 400. Ultrasonic impact rounding device; 410. Ultrasonic impact support; 420. Ultrasonic impact rounding mechanism; 421. Ultrasonic transducer; 422. Ultrasonic amplitude transformer; 423. Continuously variable diameter impact head; 4231. Rotating body; 4232. Rotating shaft; 4233. Rounded corner groove; 424. Ultrasonic generator; 430. Horizontal rotation drive mechanism for impact head; 431. Fourth motor; 432. Driving gear; 433. Driven gear; 440. Vertical rotation drive mechanism for impact head; 441. Fifth motor; 442. Reducer;

[0075] 500. Vertical movement drive device for impact head; 510. First motor; 520. Vertical lead screw; 530. Vertical ball nut assembly; 540. Vertical slide plate; 550. Vertical guide mechanism; 551. Vertical guide rail; 552. Vertical slider. Detailed Implementation

[0076] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention. To make the above features and advantages of this invention more apparent and understandable, specific embodiments are provided below with reference to the accompanying drawings for detailed description.

[0077] like Figures 1 to 11 As shown, an embodiment of the present invention provides a device for rounding the edges of an aluminum alloy wheel hub, comprising:

[0078] A hub horizontal rotation drive device 100 is used to drive the hub 3 to rotate horizontally.

[0079] A hub swing drive device 200 is used to drive the hub 3 to swing up and down; the output end of the hub swing drive device 200 is fixedly connected to the fixed end of the hub horizontal rotation drive device 100.

[0080] A hub horizontal movement drive device 300 is used to drive the hub 3 to move horizontally; the output end of the hub horizontal movement drive device 300 is fixedly connected to the fixed end of the hub swing drive device 200.

[0081] An ultrasonic impact rounding device 400 is used to perform ultrasonic impact processing on the edges of the wheel hub 3; the ultrasonic impact rounding device 400 is disposed above the wheel hub horizontal rotation drive device 100.

[0082] The vertical movement drive device 500 for impact head is used to drive the ultrasonic impact rounding device 400 to move vertically; the output end of the vertical movement drive device 500 for impact head is fixedly connected to the fixed end of the ultrasonic impact rounding device 400.

[0083] The ultrasonic impact rounding device 400 includes:

[0084] An ultrasonic impact support 410 is fixedly connected to the output end of the vertical movement drive device 500 of the impact head.

[0085] An ultrasonic impact rounding mechanism 420 is mounted on an ultrasonic impact support 410. The ultrasonic impact rounding mechanism 420 includes an ultrasonic transducer 421, an ultrasonic amplitude transformer 422, and a continuously variable diameter impact head 423. The ultrasonic transducer 421 is electrically connected to an ultrasonic generator 424. The lower end of the ultrasonic transducer 421 is fixedly connected to the upper end of the ultrasonic amplitude transformer 422. The lower end of the ultrasonic amplitude transformer 422 is vertically rotatably connected to the continuously variable diameter impact head 423.

[0086] The horizontal rotation drive mechanism 430 for driving the continuously variable diameter impact head 423 to rotate horizontally to adjust to the desired orientation;

[0087] The vertical rotation drive mechanism 440 for the impact head is used to drive the continuously variable diameter impact head 423 to rotate vertically to adjust to the required fillet radius.

[0088] In this embodiment, the ultrasonic impact rounding mechanism 420 is horizontally rotatably mounted on the ultrasonic impact support 410, specifically, the ultrasonic amplitude transformer 422 can be horizontally rotatably mounted on the ultrasonic impact support 410. Of course, in other embodiments, the ultrasonic transducer 421 can also be horizontally rotatably mounted on the ultrasonic impact support 410.

[0089] In this embodiment, the horizontal rotation drive mechanism 430 of the impact head is fixedly mounted on the ultrasonic impact support 410, and the horizontal rotation drive mechanism 430 of the impact head can drive the ultrasonic impact rounding mechanism 420 to rotate horizontally. Specifically, the horizontal rotation drive mechanism 430 of the impact head is a motor gear drive mechanism, which may include:

[0090] The fourth motor 431 is fixedly mounted on the ultrasonic impact support 410;

[0091] The drive gear 432 is coaxially fixedly mounted on the output end of the fourth motor 431;

[0092] Driven gear 433 is coaxially fixedly mounted (e.g., by welding or bolting) on ​​ultrasonic transducer 421 or ultrasonic amplitude transformer 422 and meshes with drive gear 432;

[0093] The fourth motor 431 is preferably, but not limited to, a servo motor. During operation, the fourth motor 431 drives the driving gear 432, which in turn drives the driven gear 433. The driven gear 433 then drives the ultrasonic transducer 421 or the ultrasonic amplitude transformer 422 in the ultrasonic impact rounding mechanism 420 to rotate in the horizontal plane, thereby adjusting the continuously variable diameter impact head 423 to the desired directional position. Of course, the horizontal rotation drive mechanism 430 for the impact head is not limited to a motor gear set drive mechanism; in other embodiments, the horizontal rotation drive mechanism 430 can also be a motor worm gear drive mechanism, a motor rack and pinion drive mechanism, etc.

[0094] In this embodiment, the vertical rotation drive mechanism 440 of the impact head is fixedly mounted on the ultrasonic impact rounding mechanism 420. Specifically, the vertical rotation drive mechanism 440 of the impact head may include:

[0095] Fifth motor 441;

[0096] The reducer 442 has its input end fixedly connected to the output end of the fifth motor 441, and its output end fixedly connected to the rotating shaft of the continuously variable diameter impact head 423.

[0097] The fifth motor 441 is preferably, but not limited to, a servo motor, and the reducer 442 is preferably, but not limited to, a gear reducer, a worm gear reducer, or a planetary reducer. During operation, the fifth motor 441 drives the reducer 442, which in turn drives the continuously variable diameter impact head 423 to rotate in a vertical plane, thereby adjusting the continuously variable diameter impact head 423 to the desired fillet diameter.

[0098] In this embodiment, the continuously variable diameter impact head 423 includes a rotating body 4231 (such as a cylindrical rotating body 4231). Rotating shafts 4232 are located at the centers of both ends of the rotating body 4231. The rotating body 4231 rotates and engages with two shaft holes at the lower end of the ultrasonic amplitude transformer 422 via the rotating shafts 4232 at both ends. A continuously variable radius rounded corner groove 4233 is formed along the circumferential direction on the outer periphery of the rotating body 4231. During operation, the rounded corner groove 4233 can be rotated to face downwards according to the required rounded corner radius of the hub 3 edge.

[0099] In this embodiment, the hub horizontal rotation drive device 100 includes:

[0100] The spindle box 110 is fixedly mounted on the output end of the hub swing drive device 200;

[0101] The chuck 120 is fixedly installed on the output end of the spindle box 110 and is used to hold the hub 3.

[0102] The chuck 120 is preferably, but not limited to, a six-jaw chuck. During operation, the hub 3 is fixed by the chuck 120, and the chuck 120 is driven to rotate in the horizontal plane by the spindle box 110, thereby realizing the horizontal rotation of the hub 3.

[0103] In this embodiment, the vertical movement drive device 500 of the impact head includes:

[0104] The first motor 510 is fixedly mounted on the frame 1;

[0105] A vertical lead screw 520 is rotatably mounted on the frame 1 at both ends; one end of the vertical lead screw 520 is connected to the output end of the first motor 510 for transmission.

[0106] Vertical ball nut assembly 530, which cooperates with vertical lead screw 520;

[0107] A vertical slide plate 540 is fixedly connected to a vertical ball nut assembly 530; the ultrasonic impact rounding device 400 is fixedly installed on the vertical slide plate 540.

[0108] A vertical guide mechanism 550 is disposed between the frame 1 and the vertical slide 540 to guide the vertical slide 540 to move smoothly vertically.

[0109] The first motor 510 is preferably, but not limited to, a servo motor. The vertical guide mechanism 550 includes a vertical guide rail 551 and a vertical slider 552. The vertical guide rail 551 can be fixedly mounted on the frame 1, and the vertical slider 552 can be fixedly mounted on the vertical slide plate 540. The vertical slider 552 slides vertically with the vertical guide rail 551. The vertical guide rail 551 can be arranged in two symmetrically distributed about the vertical lead screw 520, and each vertical guide rail 551 can be configured with two vertical sliders 552. During operation, the first motor 510 drives the vertical lead screw 520 to rotate, which in turn drives the vertical ball nut assembly 530 to move vertically. The vertical ball nut assembly 530 drives the vertical slide plate 540 to move vertically synchronously, which in turn guides the vertical slide plate 540 to move vertically. Finally, the vertical slide plate 540 drives the ultrasonic impact rounding device 400 to move vertically synchronously.

[0110] In this embodiment, the wheel hub horizontal movement drive device 300 includes:

[0111] A hub longitudinal translation drive mechanism 310 is used to drive the hub 3 to move longitudinally; the hub longitudinal translation drive mechanism 310 includes:

[0112] Second motor 311;

[0113] The longitudinal lead screw 312 has one end connected to the output end of the second motor 311 for transmission.

[0114] Longitudinal ball nut assembly 313, which cooperates with longitudinal lead screw 312;

[0115] Longitudinal slide plate 314, which is fixedly connected to longitudinal ball nut assembly 313;

[0116] The longitudinal guide mechanism 315 is used to guide the longitudinal slide 314 to move smoothly in the longitudinal direction.

[0117] The second motor 311 is preferably, but not limited to, a servo motor. The longitudinal guide mechanism 315 includes a longitudinal guide rail 3151 and a longitudinal slider 3152. The longitudinal slider 3152 slides horizontally with the longitudinal guide rail 3151. The longitudinal guide rail 3151 can be arranged in two symmetrically distributed about the longitudinal lead screw 312, and each longitudinal guide rail 3151 can be configured with two longitudinal sliders 3152. During operation, the second motor 311 drives the longitudinal lead screw 312 to rotate, which in turn drives the longitudinal ball nut assembly 313 to move horizontally. The longitudinal ball nut assembly 313 then drives the longitudinal slide plate 314 to move horizontally in sync, and the longitudinal guide mechanism 315 guides the longitudinal slide plate 314 to move horizontally in sync.

[0118] A hub lateral translation drive mechanism 320 is used to drive the hub 3 to move laterally; the hub lateral translation drive mechanism 320 includes:

[0119] Third motor 321;

[0120] The transverse lead screw 322 has one end connected to the output end of the third motor 321 for transmission.

[0121] A transverse ball nut assembly 323, which cooperates with a transverse lead screw 322;

[0122] A transverse slide plate 324 is fixedly connected to a transverse ball nut assembly 323;

[0123] The transverse guide mechanism 325 is used to guide the transverse slide 324 to move smoothly laterally.

[0124] The third motor 321 is preferably, but not limited to, a servo motor. The lateral guide mechanism 325 includes a lateral guide rail 3251 and a lateral slider 3252. The lateral slider 3252 slides horizontally with the lateral guide rail 3251. The lateral guide rail 3251 can be arranged in two symmetrically distributed about the lateral lead screw 322, and each lateral guide rail 3251 can be configured with two lateral sliders 3252. During operation, the third motor 321 drives the lateral lead screw 322 to rotate, which in turn drives the lateral ball nut assembly 323 to move horizontally. The lateral ball nut assembly 323 then drives the lateral slide plate 324 to move horizontally synchronously. The lateral guide mechanism 325 guides the lateral slide plate 324 to move horizontally.

[0125] The longitudinal slide plate 314 or the transverse slide plate 324 is used as the output end of the wheel hub horizontal movement drive device 300. Specifically, when the longitudinal slide plate 314 is used as the output end of the wheel hub horizontal movement drive device 300, the fixed end of the wheel hub longitudinal translation drive mechanism 310 is fixedly installed on the output end of the wheel hub transverse translation drive mechanism 320. When the transverse slide plate 324 is used as the output end of the wheel hub horizontal movement drive device 300, the fixed end of the wheel hub transverse translation drive mechanism 320 is fixedly installed on the output end of the wheel hub longitudinal translation drive mechanism 310.

[0126] In this embodiment, the transverse slide plate 324 is used as the output end of the hub horizontal movement drive device 300. The second motor 311 is fixedly mounted on the frame 1. The two ends of the longitudinal lead screw 312 are rotatably mounted on the frame 1. The longitudinal guide rail 3151 is fixedly mounted on the frame 1. The longitudinal slider 3152 is fixedly mounted on the transverse slide plate 324. The third motor 321 is fixedly mounted on the longitudinal slide plate 314. The two ends of the transverse lead screw 322 are rotatably mounted on the transverse slide plate 324 (e.g., the bottom side). The transverse ball nut assembly 323 is fixedly mounted on the longitudinal slide plate 314 (e.g., the top side). The transverse guide rail 3251 is fixedly mounted on the transverse slide plate 324 (e.g., the bottom side). The transverse slider 3252 is fixedly mounted on the longitudinal slide plate 314 (e.g., the top side).

[0127] In this embodiment, the hub swing drive device 200 includes:

[0128] The swing support 210 is fixedly installed at the output end of the hub horizontal movement drive device 300;

[0129] The swing element 220 is rotatably mounted on the swing support 210;

[0130] The sixth motor 230 is fixedly mounted on the swing support 210; the output end of the sixth motor 230 is connected to the swing shaft of the swing member 220.

[0131] The sixth motor 230 is preferably, but not limited to, a servo motor. The sixth motor 230 can drive the rotating shaft of the swing member 220 to reciprocate via a reduction mechanism 240 (such as a gear reduction mechanism or a worm gear reduction mechanism). The swing member 220 may include an active swing arm 221 and a driven swing arm 222. The active swing arm 221 is rotatably mounted on the inner side of one end of the swing support 210 via its rotating shaft, and the driven swing arm 222 is rotatably mounted on the inner side of the other end of the swing support 210 via its rotating shaft. The spindle box 110 is fixedly mounted between the active swing arm 221 and the driven swing arm 222. During operation, the sixth motor 230 drives the swing shaft of the swing member 220 (specifically the active swing arm 221) to reciprocate, causing the spindle box 110 of the wheel hub horizontal movement drive device 300 to swing up and down, thereby causing the wheel hub 3 to swing up and down.

[0132] In this embodiment, the hub horizontal rotation drive device 100 (specifically the spindle box 110), the hub swing drive device 200 (specifically the sixth motor 230), the hub horizontal movement drive device 300 (specifically the second motor 311 and the third motor 321), the ultrasonic impact rounding device 400 (specifically the ultrasonic generator 424, the fourth motor 431, and the fifth motor 441), and the impact head vertical movement drive device 500 (specifically the first motor 510) are all electrically connected to the controller 2. The controller 2 is preferably, but not limited to, a PLC controller, and the specific model is not limited, such as a Siemens S7 series PLC.

[0133] This embodiment cleverly comprises a multi-axis aluminum alloy wheel hub edge rounding device, consisting of a wheel hub horizontal rotation drive device 100, a wheel hub swing drive device 200, a wheel hub longitudinal translation drive mechanism 310, a wheel hub lateral translation drive mechanism 320, an impact head vertical movement drive device 500, an impact head horizontal rotation drive mechanism 430, and an impact head vertical rotation drive mechanism 440. This device can continuously adjust the radius and orientation of the rounded corners of the continuously variable diameter impact head 423 and the swing amplitude of the wheel hub 3 during ultrasonic impact processing. It is highly adaptable and can process continuously changing rounded curved surfaces.

[0134] This embodiment utilizes an ultrasonic impact rounding device 400 with a continuously variable diameter impact head 423. Through localized plastic deformation, it transforms edges and narrow surfaces generated during machining into rounded corners or curved surfaces, eliminating microscopic defects such as cutting marks. It possesses a certain forming capability, improving appearance quality and generating high-amplitude residual compressive stress, thus preventing fatigue cracks induced by stress concentration and improving the fatigue performance of the hub 3 and related areas. The angle of the continuously variable diameter impact head 423 can be adjusted in real-time according to the edge machining requirements of the hub 3 to obtain the desired cross-sectional profile (radius or other curves). During machining, selecting the appropriate cross-section for ultrasonic impact treatment according to design requirements can yield continuously changing curved surfaces. This aluminum alloy hub edge rounding device can be used as a dedicated dressing tool on CNC machine tools, directly shaping the edges after machining the hub 3, eliminating the need for workpiece positioning and tool setting. This aluminum alloy hub edge rounding device can also be used for edge shaping of other components, improving appearance and fatigue performance, and can also be used for machining other complex parts. Furthermore, the improved surface quality and the formation of residual stress can effectively improve the corrosion resistance of the parts.

[0135] This embodiment also provides a method for rounding the edges of an aluminum alloy wheel hub, using the aforementioned aluminum alloy wheel hub edge rounding device, including the following steps:

[0136] S1. Fix the hub 3 to be rounded on the output end of the hub horizontal rotation drive device 100; adjust the horizontal position of the hub 3 by the hub horizontal movement drive device 300, and adjust the height position of the ultrasonic impact rounding device 400 by the impact head vertical movement drive device 500, so that the ultrasonic impact rounding device 400 is aligned with the starting position of the rounding of the edge of the hub 3, and the tool setting is completed.

[0137] S2. Drive the wheel hub 3 to rotate horizontally via the wheel hub horizontal rotation drive device 100;

[0138] S3. The vertical rotation drive mechanism 440 drives the continuous variable diameter impact head 423 to rotate vertically to adjust to the required fillet radius, and the ultrasonic impact filleting mechanism 420 performs ultrasonic impact processing on the edge of the hub 3.

[0139] S4. The impact head 423 is driven to rotate horizontally by the impact head horizontal rotation drive mechanism 430 to adjust to the required position. The wheel hub 3 is driven to swing up and down by the wheel hub swing drive device 200, and finally the rounding treatment of the edge of the wheel hub 3 is completed.

[0140] In this embodiment, in step S1, the hub 3 to be rounded is fixedly mounted on the chuck 120. The controller 2 controls the first motor 510 to work, causing the continuous variable diameter impact head 423 to descend to a suitable height position. The controller 2 also controls the second motor 311 and the third motor 321 to work, causing the hub 3 to move horizontally to a suitable position, thereby aligning the continuous variable diameter impact head 423 with the starting position of the rounding of the hub 3, thus completing the tool setting. In step S2, the controller 2 controls the spindle box 110 to work, causing the hub 3 to rotate horizontally according to the set program. In step S3, the controller 2 controls the fifth motor 441 to work, causing the variable diameter impact head to rotate vertically to adjust to the required rounded radius. The controller 2 also controls the ultrasonic generator 424 to work, causing the continuous variable diameter impact head 423 to perform ultrasonic impact processing on the edges of the hub 3. The vibration frequency of the continuous variable diameter impact head 423 is preferably, but not limited to, 20-40 kHz, such as 25 kHz, 30 kHz, 35 kHz, etc. In step S4, during the ultrasonic impact processing, the controller 2 controls the fourth motor 431 to work, so that the variable diameter impact head rotates horizontally to adjust to the required position. The controller 2 controls the sixth motor 230 to work, so that the hub 3 swings up and down, and finally completes the rounding of the edges of the hub 3.

[0141] This embodiment uses the high-frequency impact of the continuously variable diameter impact head 423 to form a continuous transition surface on the edge of the hub 3. Under the combined action of static load and ultrasonic impact load, the high-frequency impact on the edge of the hub 3 causes local plastic deformation, effectively eliminating micro-defects such as machining tool marks on the edge of the hub 3, improving the surface quality of the formed surface, reducing stress concentration and forming high-amplitude residual stress, significantly improving the fatigue performance of the hub 3 and related areas. It has the advantages of chipless processing that combines local plastic forming, performance improvement and surface beautification, and is clean and efficient.

[0142] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0143] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "multiple" means two or more, unless otherwise explicitly specified.

[0144] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0145] In this invention, all contents not disclosed in detail are existing technologies and will not be described in detail here.

[0146] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for rounding the edges of an aluminum alloy wheel hub, characterized in that, include: A wheel hub horizontal rotation drive device is used to drive the wheel hub to rotate horizontally; A hub swing drive device is used to drive the hub to swing up and down. The output end of the hub swing drive device is fixedly connected to the fixed end of the hub horizontal rotation drive device; A wheel hub horizontal movement drive device is used to drive the wheel hub to move horizontally; the output end of the wheel hub horizontal movement drive device is fixedly connected to the fixed end of the wheel hub swing drive device; An ultrasonic impact rounding device is used to perform ultrasonic impact processing on the edges of a wheel hub; the ultrasonic impact rounding device is located above the horizontal rotation drive device of the wheel hub. A vertical movement drive device for impact head is used to drive the ultrasonic impact rounding device to move vertically; the output end of the vertical movement drive device for impact head is fixedly connected to the fixed end of the ultrasonic impact rounding device. The ultrasonic impact rounding device includes: An ultrasonic impact support, which is fixedly connected to the output end of the vertical movement drive device of the impact head; An ultrasonic impact rounding mechanism is installed on an ultrasonic impact support. The ultrasonic impact rounding mechanism includes an ultrasonic transducer, an ultrasonic amplitude transformer, and a continuously variable diameter impact head. The ultrasonic transducer is electrically connected to an ultrasonic generator. The lower end of the ultrasonic transducer is fixedly connected to the upper end of the ultrasonic amplitude transformer, and the lower end of the ultrasonic amplitude transformer is vertically rotatably connected to the continuously variable diameter impact head. The impact head horizontal rotation drive mechanism is used to drive the continuously variable diameter impact head to rotate horizontally to adjust to the required orientation; The vertical rotation drive mechanism for the impact head is used to drive the continuously variable diameter impact head to rotate vertically to adjust to the required fillet radius; The ultrasonic impact rounding mechanism is horizontally rotatably mounted on the ultrasonic impact support, and the impact head horizontal rotation drive mechanism is fixedly mounted on the ultrasonic impact support. The impact head horizontal rotation drive mechanism can drive the ultrasonic impact rounding mechanism to rotate horizontally. The ultrasonic transducer or ultrasonic amplitude transformer is horizontally rotatably mounted on the ultrasonic impact support, and the horizontal rotation drive mechanism for the impact head includes: The fourth motor is fixedly mounted on the ultrasonic impact support; The drive gear is coaxially fixedly mounted on the output end of the fourth motor; The driven gear is coaxially fixed on the ultrasonic transducer or ultrasonic amplitude transformer and meshes with the driving gear; The vertical rotation drive mechanism of the impact head is fixedly mounted on the ultrasonic impact rounding mechanism. The vertical rotation drive mechanism of the impact head includes: Fifth motor; The speed reducer has its input end fixedly connected to the output end of the fifth motor, and its output end fixedly connected to the rotating shaft of the continuously variable diameter impact head. The continuously variable diameter impact head includes a rotating body, with rotating shafts at the center of both ends of the rotating body, and a rounded corner groove with a continuously varying radius is formed along the middle of the outer periphery of the rotating body.

2. The aluminum alloy wheel hub edge rounding device according to claim 1, characterized in that, The hub horizontal rotation drive device includes: The spindle box is fixedly mounted on the output end of the hub swing drive device; The chuck is fixedly mounted on the output end of the spindle box and is used to hold the hub.

3. The aluminum alloy wheel hub edge rounding device according to claim 1, characterized in that, The vertical movement drive device for the impact head includes: The first motor is fixedly mounted on the frame; A vertical lead screw is rotatably mounted on the frame at both ends; one end of the vertical lead screw is connected to the output end of the first motor for transmission. A vertical ball nut assembly that mates with a vertical lead screw; A vertical slide plate is fixedly connected to a vertical ball bearing nut assembly; the ultrasonic impact rounding device is fixedly installed on the vertical slide plate; A vertical guide mechanism, located between the frame and the vertical slide, is used to guide the vertical slide to move smoothly vertically.

4. The aluminum alloy wheel hub edge rounding device according to claim 1, characterized in that, The hub horizontal movement drive device includes: A hub longitudinal translation drive mechanism is used to drive the hub to move longitudinally; the hub longitudinal translation drive mechanism includes: Second motor; A longitudinal lead screw, one end of which is connected to the output end of the second motor for transmission; A longitudinal ball nut assembly that mates with a longitudinal lead screw; Longitudinal slide plate, which is fixedly connected to longitudinal ball nut assembly; The longitudinal guide mechanism is used to guide the longitudinal slide to move smoothly in the longitudinal direction; A wheel hub lateral translation drive mechanism is used to drive the wheel hub to move laterally; the wheel hub lateral translation drive mechanism includes: Third motor; A horizontal lead screw, one end of which is connected to the output end of the third motor for transmission; A transverse ball nut assembly that mates with a transverse lead screw; A transverse slide plate, which is fixedly connected to a transverse ball nut assembly; The lateral guide mechanism is used to guide the smooth lateral movement of the lateral slide. The longitudinal or transverse slide plate is used as the output end of the hub horizontal movement drive device.

5. The aluminum alloy wheel hub edge rounding device according to claim 1, characterized in that, The hub swing drive device includes: A swing support is fixedly installed at the output end of the wheel hub horizontal movement drive device; The swing component is rotatably mounted on the swing support; The sixth motor is fixedly mounted on the swing support; the output end of the sixth motor is connected to the swing shaft of the swing component.

6. A method for rounding the edges of an aluminum alloy wheel hub, using the aluminum alloy wheel hub edge rounding device as described in any one of claims 1 to 5, characterized in that, Includes the following steps: S1. Fix the hub to be rounded on the output end of the hub horizontal rotation drive device; adjust the horizontal position of the hub by the hub horizontal movement drive device, and adjust the height position of the ultrasonic impact rounding device by the impact head vertical movement drive device, so that the ultrasonic impact rounding device is aligned with the starting position of the rounding of the hub's edge, and complete the tool setting. S2. Drive the wheel hub to rotate horizontally via a wheel hub horizontal rotation drive device; S3. The vertical rotation drive mechanism drives the continuously variable diameter impact head to rotate vertically to adjust to the required fillet radius, and the ultrasonic impact filleting mechanism performs ultrasonic impact processing on the edge of the wheel hub. S4. The continuously variable diameter impact head is driven to rotate horizontally by the horizontal rotation drive mechanism to adjust to the required position. The wheel hub is driven to swing up and down by the wheel hub swing drive device, and finally the rounding treatment of the wheel hub edge is completed.

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