Double-head gantry type numerical control milling machine for hub machining

Abstract

This utility model belongs to the field of metal processing technology, specifically a gantry-type double-head CNC milling machine for wheel hub processing. A milling machine base plate is installed below the machine frame. Two sets of longitudinal slide rails are symmetrically installed on the surface of the milling machine base plate. Longitudinal sliders are mounted on the surface of the longitudinal slide rails. A motor fixing plate is mounted on one side of the milling machine base plate. A first motor is mounted on one side of the motor fixing plate. A lead screw is installed at the end of the first motor. A motor bearing seat is installed at the connection between the first motor and the lead screw. By adding a control system for multi-axis movement of the automotive wheel hub to the bottom of the worktable, multiple sets of micro motors installed below control the lead screw to rotate, driving the upper worktable to adjust its position. This, in conjunction with the upper milling cutter, allows for the processing of the automotive wheel hub, effectively improving processing efficiency, enhancing the accuracy of the device, improving product quality, and extending the lifespan of the device.

Description

Technical Field

[0001] This utility model belongs to the field of metal processing technology, specifically a gantry-type double-head CNC milling machine for wheel hub processing. Background Technology

[0002] As a key component of the vehicle's driving system, the car wheel hub not only bears the function of supporting the weight of the entire vehicle, but its shape design and manufacturing precision also directly affect the vehicle's driving performance and aesthetics. Modern wheel hubs mostly use lightweight materials such as aluminum alloys, and their dynamic balance performance and structural strength are ensured through precision machining.

[0003] In existing technologies, the production of automotive wheel hubs typically involves wheel hub milling, which requires precision machining using a CNC system. CNC milling machines are commonly used, and their applications are quite widespread. A typical CNC milling machine uses two milling spindles in conjunction with an automatic fixture to clamp and position the wheel hub. The machining path is controlled by the CNC system. It usually consists of a bed, crossbeam, spindle, lead screw drive system, counterweight traction device, tapping system, and worktable. A servo motor drives the spindle to operate, enabling synchronous machining of the wheel hub. The tapping system further assists in milling different surfaces of the wheel hub, thus completing the wheel hub machining process.

[0004] In current technology, CNC milling machines on the market typically operate using a power supply mounted on the bottom side, driving the spindle via a servo motor to synchronously process the wheel hub. A tapping system then assists in milling different surfaces of the wheel hub, completing the machining process. However, during wheel hub machining, the equipment requires frequent adjustments to the wheel hub's position over extended periods to coordinate with the tapping drill bit above. This results in wasted production capacity, slow production speed, and extremely high requirements for the spindle system's positioning accuracy, posing a risk of machining errors. Therefore, to address these issues, a gantry-type double-head CNC milling machine for wheel hub machining is proposed. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and address the problems of existing equipment, this utility model proposes a gantry-type double-head CNC milling machine for wheel hub processing.

[0006] The technical solution adopted by this utility model to solve its technical problem is a gantry-type double-head CNC milling machine for wheel hub processing, including a frame, a milling machine base plate installed below the frame, two sets of longitudinal slide rails symmetrically installed on the surface of the milling machine base plate, longitudinal sliders mounted on the surface of the longitudinal slide rails, a motor fixing plate mounted on one side of the milling machine base plate, a No. 1 motor mounted on one side of the motor fixing plate, a lead screw mounted at the end of the No. 1 motor, a motor bearing seat mounted at the connection between the No. 1 motor and the lead screw, a nut fixing block mounted in the middle of the lead screw, a bearing seat mounted at the other end of the nut fixing block, a middle layer plate mounted on the surface of the longitudinal slider, a transverse slider mounted on the surface of the middle layer plate, and a transverse slide rail mounted on the surface of the transverse slider. By adding a set of control systems for assisting multi-axis movement of automotive wheel hubs to the bottom of the worktable, the processing efficiency can be effectively improved.

[0007] Preferably, a fixing plate is installed above the transverse slide rail, a second motor is mounted on one side of the fixing plate, and a worktable is mounted on the surface of the fixing plate to work with the milling cutter above to process automobile wheel hubs, thereby enhancing the accuracy of the device.

[0008] Preferably, the surface of the frame is equipped with a vertical slide rail, the surface of the vertical slide rail is equipped with a vertical slider, multiple sets of support columns are installed on the inner side of the frame, and corner braces are installed at the connection of the frame. The spindle is driven by a servo motor to rotate, thereby realizing synchronous processing of the wheel hub.

[0009] Preferably, a fixed base is mounted on the top of the frame, a sprocket is mounted on the outer side of the fixed base, a lifting motor is mounted in the middle of the fixed base, and a counterweight traction chain is mounted on the surface of the sprocket. With the help of a tapping system, the quality of the product is improved and the service life of the device is extended.

[0010] Preferably, a counterweight is installed on the back of the frame, a spindle housing is installed on the surface of the vertical slider, a top motor is installed above the spindle housing, and a motor gear is installed at the output end of the top motor.

[0011] Preferably, a tie rod is installed through the front end of the spindle housing, an upper shaft seat is fitted at the connection between the tie rod and the spindle housing, a ball bearing is installed inside the upper shaft seat, a spindle gear is installed in the middle of the tie rod, a spindle is fitted at the end of the tie rod, and a lower shaft seat is fitted at the bottom of the spindle. Through the cooperation of a tapping system, the milling of different machining surfaces of the wheel hub is completed, thereby completing the wheel hub machining.

[0012] The advantages of this utility model are:

[0013] This utility model provides a gantry-type double-head CNC milling machine for wheel hub processing. To address the issue that during the production of automotive wheel hubs, the machine requires frequent adjustments to the wheel hub's position during prolonged processing to coordinate with the tapping drill bit above, resulting in wasted production capacity, slow production speed, and extremely high positioning accuracy requirements for the spindle system, posing a risk of processing errors, this invention adds a multi-axis movement control system to the bottom of the worktable to assist in the machining of the automotive wheel hub. Multiple micro-motors installed below control the lead screw to rotate, driving the upper worktable to adjust its position, thus coordinating with the upper milling cutter for wheel hub machining. This effectively improves processing efficiency, enhances the accuracy of the device, improves product quality, and extends the device's lifespan. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 An isometric side view of the entire structure;

[0016] Figure 2 This is an isometric side view of the bottom structure;

[0017] Figure 3 This is an isometric side view of the transmission structure;

[0018] Figure 4 An isometric side view of the top structure;

[0019] Figure 5 An isometric side view of the internal structure;

[0020] In the diagram: 1. Worktable; 2. Spindle box; 3. Top motor; 4. Counterweight traction chain; 5. Frame; 6. Motor No. 1; 7. Longitudinal slider; 8. Fixing plate; 9. Milling machine base plate; 10. Motor No. 2; 11. Longitudinal slide rail; 12. Motor fixing plate; 13. Motor bearing seat; 14. Transverse slide rail; 15. Transverse slider; 16. Middle shelf; 17. Lower shaft seat; 20. Upper shaft seat; 21. Vertical slider; 22. Vertical slide rail; 23. Support column; 24. Angle brace plate; 25. Motor gear; 26. Ball bearing; 27. Spindle; 28. Spindle gear; 29. ​​Tie rod; 30. Lifting motor; 31. Sprocket; 32. Fixing seat; 33. Counterweight block; 34. Nut fixing block; 35. Lead screw; 36. Bearing seat. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] Please see Figure 1-5 As shown, a gantry-type double-head CNC milling machine for wheel hub processing includes a frame 5. A milling machine base plate 9 is installed below the frame 5. Two sets of longitudinal slide rails 11 are symmetrically installed on the surface of the milling machine base plate 9. Longitudinal sliders 7 are mounted on the surface of the longitudinal slide rails 11. A motor fixing plate 12 is mounted on one side of the milling machine base plate 9. A first motor 6 is mounted on one side of the motor fixing plate 12. A lead screw 35 is installed at the end of the first motor 6. A motor bearing seat 13 is installed at the connection between the first motor 6 and the lead screw 35. A nut fixing block 34 is installed in the middle of the lead screw 35. A bearing seat 36 is mounted at the other end of the nut fixing block 34. A middle shelf 16 is mounted on the surface of the longitudinal slider 7. A transverse slider 15 is mounted on the surface of the middle shelf 16. A transverse slide rail 14 is mounted on the surface of the transverse slider 15. A fixing plate 8 is installed above the transverse slide rail 14. A second motor 10 is mounted on one side of the fixing plate 8. A worktable 1 is mounted on the surface of the fixing plate 8.

[0023] In current technology, CNC milling machines on the market typically operate using a top-mounted motor 3 that drives the spindle 27 to perform synchronous machining of the wheel hub. This is achieved through a tapping system, which then mills different surfaces of the wheel hub. However, during wheel hub machining, the machine requires frequent adjustments to the wheel hub's position over extended periods to coordinate with the tapping drill bit above. This results in wasted production capacity, slow production speed, and extremely high positioning accuracy requirements for the spindle system, posing a risk of machining errors. Therefore, to address these issues, a gantry-type double-head CNC milling machine for wheel hub machining is proposed. In the production of automotive wheel hubs, the wheel hub is fixed to the surface of the worktable 1, and the operation is performed by a bottom-mounted motor 6. Two sets of longitudinal slide rails 11 on the surface work together, while the middle shelf 16 moves via a lower longitudinal slider 7, thus adjusting the longitudinal position of the automotive wheel hub.

[0024] Furthermore, the surface of the frame 5 is equipped with a vertical slide rail 22, and a vertical slider 21 is mounted on the surface of the vertical slide rail 22. Multiple sets of support columns 23 are mounted on the inner side of the frame 5. Angle braces 24 are mounted at the connection points of the frame 5. A fixed base 32 is mounted on the top of the frame 5. A sprocket 31 is mounted on the outer side of the fixed base 32. A lifting motor 30 is mounted in the middle of the fixed base 32. A counterweight traction chain 4 is mounted on the surface of the sprocket 31. A counterweight block 33 is mounted on the back of the frame 5. The vertical slide rail 21... A spindle housing 2 is mounted on the surface of block 21. A top motor 3 is mounted on the top of the spindle housing 2. A motor gear 25 is mounted on the output end of the top motor 3. A pull rod 29 is mounted through the front end of the spindle housing 2. An upper shaft seat 20 is fitted at the connection between the pull rod 29 and the spindle housing 2. A ball bearing 26 is installed inside the upper shaft seat 20. A spindle gear 28 is mounted in the middle of the pull rod 29. A spindle 27 is fitted at the end of the pull rod 29. A lower shaft seat 17 is fitted at the bottom of the spindle 27.

[0025] During operation, the machining of the car wheel hub is carried out by the No. 2 motor 10 at the bottom and the lead screw 35 installed at the end. The horizontal slide rails 14 and the horizontal sliders 15 installed on both sides cooperate to adjust the lateral position of the car wheel hub. When the car wheel hub is milled, the top motor 3 drives the motor gear 25 to rotate, which in turn drives the spindle gear 28 to rotate synchronously, thereby driving the spindle 27 to rotate together to complete the tapping transmission of the device. The lifting motor 30 installed in the middle of the fixed base 32 can be used to adjust the vertical height of the tapping system, thereby completing the overall wheel hub machining.

[0026] Working principle: In current technology, CNC milling machines on the market typically operate using a top-mounted motor 3, which drives the spindle 27 to operate, thus achieving synchronous machining of the wheel hub. This is achieved through a tapping system, which in turn mills different surfaces of the wheel hub, completing the wheel hub machining process. However, during wheel hub machining, the machine requires frequent adjustments to the wheel hub's position over extended periods to coordinate with the tapping drill bit above. This results in wasted production capacity, slow production speed, and extremely high requirements for the spindle system's positioning accuracy, posing a certain risk of machining errors. Therefore, to address these issues, a gantry-type double-head CNC milling machine for wheel hub machining is proposed. In the production of automotive wheel hubs, the wheel hub is fixed to the surface of the worktable 1, and a No. 1 motor mounted at the bottom... 6. The operation is carried out by cooperating with the two sets of longitudinal slide rails 11 on the surface. The middle shelf 16 moves through the longitudinal slider 7 below to complete the longitudinal position adjustment of the car wheel hub. During the processing of the car wheel hub, the No. 2 motor 10 at the bottom operates, the lead screw 35 installed at the end operates, and the transverse slide rails 14 installed on both sides cooperate with the transverse slider 15 to complete the transverse position adjustment of the car wheel hub. When the car wheel hub is milled, the operation of the top motor 3 drives the motor gear 25 to rotate, which in turn drives the main shaft gear 28 to rotate synchronously, thereby driving the main shaft 27 to rotate together to complete the tapping transmission of the device. The lifting motor 30 installed in the middle of the fixed seat 32 operates to perform vertical adjustment of the tapping system, thereby completing the overall wheel hub processing.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A double-head gantry type numerical control milling machine for machining wheel hubs, characterized in that: The machine includes a frame (5), a milling machine base plate (9) is installed below the frame (5), two sets of longitudinal slide rails (11) are symmetrically installed on the surface of the milling machine base plate (9), longitudinal sliders (7) are mounted on the surface of the longitudinal slide rails (11), a motor fixing plate (12) is mounted on one side of the milling machine base plate (9), a first motor (6) is mounted on one side of the surface of the motor fixing plate (12), a lead screw (35) is installed at the end of the first motor (6), a motor bearing seat (13) is mounted at the connection between the first motor (6) and the lead screw (35), a nut fixing block (34) is installed in the middle of the lead screw (35), a bearing seat (36) is mounted at the other end of the nut fixing block (34), a middle layer plate (16) is mounted on the surface of the longitudinal slider (7), a transverse slider (15) is mounted on the surface of the middle layer plate (16), and a transverse slide rail (14) is mounted on the surface of the transverse slider (15).

2. The double-head gantry numerical control milling machine for machining wheel hub according to claim 1, characterized in that: A fixing plate (8) is installed above the transverse slide rail (14), a second motor (10) is mounted on one side of the fixing plate (8), and a worktable (1) is mounted on the surface of the fixing plate (8).

3. The double-head gantry type CNC milling machine for machining wheel hub according to claim 1, characterized in that: The surface of the frame (5) is fitted with a vertical slide rail (22), the surface of the vertical slide rail (22) is fitted with a vertical slider (21), multiple sets of support columns (23) are installed on the inner side of the frame (5), and corner braces (24) are installed at the connection of the frame (5).

4. The double-head gantry type CNC milling machine for machining wheel hub according to claim 1, characterized in that: The top of the frame (5) is equipped with a fixed seat (32), a sprocket (31) is installed on the outside of the fixed seat (32), a lifting motor (30) is installed in the middle of the fixed seat (32), and a counterweight traction chain (4) is installed on the surface of the sprocket (31).

5. The double-head gantry type CNC milling machine for machining wheel hub according to claim 1, characterized in that: A counterweight (33) is installed on the back of the frame (5), a spindle housing (2) is installed on the surface of the vertical slider (21), a top motor (3) is installed on the top of the spindle housing (2), and a motor gear (25) is installed at the output end of the top motor (3).

6. The double-head gantry numerical control milling machine for machining wheel hub according to claim 5, characterized in that: A pull rod (29) is installed through the front end of the spindle housing (2). An upper shaft seat (20) is assembled at the connection between the pull rod (29) and the spindle housing (2). A ball bearing (26) is installed inside the upper shaft seat (20). A spindle gear (28) is installed in the middle of the pull rod (29). A spindle (27) is assembled at the end of the pull rod (29). A lower shaft seat (17) is assembled at the bottom of the spindle (27).

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