Hub turning and drilling combined machine tool, hub machining method and hub machining system

Abstract

The invention discloses a hub turning and drilling composite machine tool and a machining method and system. The machine tool comprises a machine tool body, a workpiece spindle mechanism and a right machining device. The right machining device is provided with a right tool turret mechanism, the rotating axis of a right cutter head of the right tool turret mechanism is perpendicular to the axis of the workpiece spindle, and a valve hole machining assembly is integrally installed on the cutter head and comprises a transposition support, a valve hole front face drill and a valve hole indenting drill. The right cutter head is rotated to adapt to valve hole machining angles of different hubs, and a valve hole indenting drill is adopted to conduct drilling type indenting machining from the inner sides of the hubs. According to the machining method, the second-order machining and the third-order machining of the hub are combined, turning of an outer spoke, a dead head and an outer rim and drilling of a bolt hole and a valve hole are sequentially completed on one machine tool, the problems that in traditional machining, tools need to be customized due to variable angles, and the stability of indenting machining is poor are solved, and the machining method has the advantages of being high in machining flexibility, good in precision, high in efficiency and low in cost.

Description

Technical Field

[0001] This invention relates to the field of wheel hub processing equipment technology, specifically to a wheel hub turning and drilling composite machine tool, a wheel hub processing method, and a wheel hub processing system. Background Technology

[0002] Traditional wheel hub machining typically involves multiple processes performed on different machine tools. For example, the first process involves machining the outer rim (partially), inner rim, inner spokes, flange face, and center hole; the second process involves machining the outer rim (partially), outer spokes, and riser; and the third process involves machining bolt holes and valve holes. Traditional machining units are arranged in a triangular layout, which occupies a large area, results in long transfer times between processes, low equipment utilization, and makes it difficult to further improve the machining cycle time.

[0003] In wheel hub machining, the valve bore machining involves two processes: drilling on the front and slotting on the back. Traditional machining methods have the following problems:

[0004] Different wheel hub models have different valve bore axes and wheel hub center axes. To accommodate different angles, it is usually necessary to customize a power tool holder or special angle head with a specific angle for each wheel hub, which is costly and complicated to change tools.

[0005] The traditional method for machining the grooves (chamfering or countersinking) on ​​the back of valve bores is "reverse scraping," where the tool scrapes from the inside of the hub to the outside. This method results in uneven cutting, vibration, and affects surface quality. Furthermore, it often requires custom-made non-standard reverse scraping tools, making it less versatile.

[0006] Therefore, there is an urgent need for a processing solution that can adapt to different valve hole angles, and that provides a smoother and more cost-effective denting process. Summary of the Invention

[0007] The present invention aims to solve the above problems and provides a wheel hub turning and drilling composite machine tool, wheel hub processing method and wheel hub processing system, which can adapt to different valve hole angles by rotation and perform denting processing by reverse drilling process, thereby reducing tool cost and improving processing stability.

[0008] The technical solution of the present invention:

[0009] This invention provides a wheel hub turning and drilling composite machine tool, comprising: a machine bed; a workpiece spindle mechanism disposed on the machine bed for driving the wheel hub to be processed to rotate; and a right machining device disposed on the machine bed and located on one side of the workpiece spindle mechanism for machining the wheel hub to be processed; the right machining device includes a right drive mechanism and a right turret mechanism; the right turret mechanism includes a right cutter head, the rotation axis of the right cutter head being perpendicular to the axis of the workpiece spindle mechanism, and the rotation axis of the right cutter head being arranged in the front-rear direction; and a valve hole is installed on the right cutter head. The machining assembly includes a rotary table, a valve bore front drill, and a valve bore recess drill. The rotary table is mounted on the right cutter head, and the valve bore front drill and the valve bore recess drill are respectively mounted on the rotary table. The right cutter head is rotatable to align the axes of the valve bore front drill and the valve bore recess drill with the valve bore axis of the wheel hub to be machined. The valve bore front drill is configured to machine the front of the valve bore on the wheel hub to be machined, and the valve bore recess drill is configured to machine the recess on the back of the valve bore on the wheel hub to be machined.

[0010] According to one embodiment of the present invention, a left machining device is further included, which is disposed on the bed and located side by side with the right machining device on one side of the workpiece spindle mechanism; the left machining device includes a left drive mechanism and a left turret mechanism; the left turret mechanism includes a left tool disc, on which a threaded hole machining assembly, an outer spoke turning tool, a riser roughing tool and a riser finishing tool are mounted.

[0011] According to one embodiment of the present invention, the right cutter head includes a disc body, and an outer rim roughing tool arm and an outer rim finishing tool arm fixedly connected to the outer periphery of the disc body; the valve hole machining assembly is mounted on the disc body; the outer rim roughing tool and the outer rim finishing tool are respectively mounted on the outer rim roughing tool arm and the outer rim finishing tool arm.

[0012] According to one embodiment of the present invention, the right turret mechanism further includes a right indexing drive assembly, which includes an indexing gear mounted on the right cutter head and an indexing motor mounted on the right turret base. The output shaft of the indexing motor meshes with the indexing gear through a gear to drive the right cutter head to rotate.

[0013] According to one embodiment of the present invention, the valve hole machining assembly further includes a drilling drive mechanism, which is mounted on the indexing bracket and is used to drive the valve hole front drill and / or the valve hole recess drill to rotate.

[0014] According to one embodiment of the present invention, the right drive mechanism and / or left drive mechanism includes a drive member and slide combination structure for driving the corresponding turret mechanism to reciprocate in three directions: front-back, left-right and up-down.

[0015] According to one embodiment of the present invention, the screw hole machining assembly includes a drilling motor and a screw hole drill bit that is drivenly connected to its output shaft, wherein the axis of the screw hole drill bit is arranged parallel to the axis of the workpiece spindle mechanism.

[0016] The present invention also provides a wheel hub machining method using the aforementioned wheel hub turning and drilling composite machine tool, comprising the steps of: adjusting the rotation angle of the right cutter head so that the axis of the valve hole front drill on the indexing bracket is aligned with the valve hole axis of the wheel hub to be machined; using the aligned valve hole front drill to machine the front of the valve hole; adjusting the rotation angle of the right cutter head so that the axis of the valve hole recessing drill on the indexing bracket is aligned with the axis of the machined valve hole; using the valve hole recessing drill to perform drilling recessing machining from bottom to top along the axis of the machined valve hole.

[0017] According to one embodiment of the present invention, the wheel hub machining is performed sequentially in two and three stages on the wheel hub turning and drilling composite machine tool, wherein: the second stage machining includes machining the outer spokes and riser using the tool on the left cutter head, and machining the outer rim using the turning tool on the right cutter head; the third stage machining includes machining the bolt hole using the bolt hole machining assembly on the left cutter head, and machining the front side of the valve hole using the valve hole front drill on the right cutter head, and then machining the back side of the valve hole using the valve hole recessing drill.

[0018] The present invention also provides a wheel hub processing system, comprising: a primary machine for performing first-stage wheel hub processing; a wheel hub turning and drilling composite machine tool according to the above embodiment for performing second-stage and third-stage wheel hub processing; and a robot disposed between the primary machine and the wheel hub turning and drilling composite machine tool for transferring the wheel hub to be processed between the two.

[0019] The wheel hub turning and drilling combined machine tool provided by the present invention has the following beneficial effects:

[0020] 1. High versatility and flexible production: By setting a right cutter head with its rotation axis perpendicular to the workpiece spindle and installing valve hole machining components (including front drills and recess drills) that rotate with it, the machine tool can quickly and accurately adjust the angle of the valve hole machining tools by rotating the right cutter head to adapt to the different valve hole axis angles of different wheel models. This eliminates the traditional practice of needing to customize a special angle tool holder or angle head for each wheel model, significantly improving the machine tool's adaptability to different products, reducing changeover costs and time, and is especially suitable for flexible production of multiple varieties and small batches of wheel hubs.

[0021] 2. Improved Processing Stability and Quality: Unlike the traditional "reverse scraping" method, this solution specifically includes a dedicated valve hole denting drill and employs a drilling process from the inside of the hub to the outside (i.e., from bottom to top) for back-side denting. Compared to reverse scraping, the drilling process provides a more stable cutting force, effectively suppressing vibration and chatter during processing. This results in better dented surface quality and dimensional consistency, improving the stability and reliability of product processing.

[0022] 3. Simplified Structure and Cost Optimization: The tools required for machining the front and back sides of the valve bore (drilling on the front and slotting on the back) are integrated into a rotatable indexing bracket and linked to the right tool turret, achieving multi-functional integration. This structure reduces reliance on independent, non-standard back-scraping tools or complex angle adjustment mechanisms, simplifies the machine tool's tool configuration and motion control logic, helps reduce the procurement, inventory, and management costs of special-purpose tools, and makes the overall equipment structure more compact.

[0023] 4. Machining Accuracy Guarantee: The front drilling and back reaming of the valve bore are mounted on the same indexing bracket and positioned angularly based on the same rotational reference (right cutter head). This ensures a high degree of coaxiality and angular consistency in the front drilling and back reaming of the same valve bore, reducing alignment errors caused by tool changes or the use of different tool holders, thereby guaranteeing the overall shape and positional accuracy of the valve bore machining.

[0024] 5. Process Integration and Efficiency Improvement: This right-hand machining unit integrates the turning function of the outer rim and the drilling (including squaring) function of the valve hole into the same station. Switching between different processes can be achieved by rotating the right cutter head. This design reduces the time for workpiece transfer between machine tools or waiting between stations, supports the continuous completion of multiple processes on one machine, helps to shorten the overall machining cycle time, and improves equipment utilization and production efficiency.

[0025] In summary, this technical solution comprehensively solves the problems of difficult angle adaptation, poor denting quality, and high special-purpose costs in traditional wheel hub valve hole machining through innovative cutter head and tool layout. While improving machining flexibility, stability, precision and efficiency, it also achieves structural optimization and cost reduction.

[0026] The preferred embodiments of the present invention and their beneficial effects will be further described in detail with reference to specific implementation methods. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but should not be construed as limiting the invention. In the drawings:

[0028] Figure 1 This is a perspective view of the wheel hub turning and drilling composite machine tool of the present invention;

[0029] Figure 2 This is a front view of the wheel hub turning and drilling composite machine tool of the present invention;

[0030] Figure 3 This is a right view of the wheel hub turning and drilling composite machine tool of the present invention;

[0031] Figure 4 This is a perspective view of the left turret mechanism of the wheel hub turning and drilling composite machine tool of the present invention;

[0032] Figure 5 This is a structural diagram of the right turret mechanism and valve hole machining assembly of the wheel hub turning and drilling composite machine tool of the present invention;

[0033] Figure 6 This is an internal structural diagram of the right turret mechanism of the wheel hub drilling composite machine tool of the present invention;

[0034] Figure 7 This is a front view of the valve hole machining assembly of the wheel hub machining combined machine tool of the present invention;

[0035] Figure 8 This is a partially enlarged view of the first operating state of the wheel hub turning and drilling composite machine tool of the present invention;

[0036] Figure 9 This is a partially enlarged view of the second usage state of the wheel hub turning and drilling composite machine tool of the present invention;

[0037] Figure 10 This is a schematic diagram of the wheel hub processing system of the present invention.

[0038] The diagram shows: 1. Bed; 2. Workpiece spindle mechanism; 3. Left machining unit; 4. Right machining unit; 31. Left drive mechanism; 32. Left turret mechanism; 33. Screw hole machining assembly; 34. Outer wheel spoke turning tool; 35. Riser roughing tool; 36. Riser finish turning tool; 321. Left turret holder; 322. Left indexing drive assembly; 323. Left tool head; 41. Right drive mechanism; 42. Right turret mechanism; 43. Valve hole machining assembly; 44. Outer wheel rim roughing tool; 45. Outer wheel rim finish turning tool; 421. Right turret holder; 422. Right indexing drive assembly; 423. Right tool head; 431. Valve hole front drill; 432. Valve hole recess drill; 433. Drilling drive mechanism. 34. Disc body 4231, roughing tool arm 4232, finishing tool arm 4233, indexing gear 4221, indexing motor 4222, drilling motor 331, screw drill bit 332, first left-right drive 311, first left-right slide 312, first front-back drive 313, first front-back slide 314, first up-down drive 315, second left-right drive 411, second left-right slide 412, second front-back drive 413, second front-back slide 414, second up-down drive 415, first main machine 10, wheel hub turning and drilling composite machine tool 20, robot 30, wheel hub to be processed 100. Detailed Implementation

[0039] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0040] Please see Figures 1 to 3 The present invention provides a wheel hub turning and drilling composite machine tool, including a bed 1, a workpiece spindle mechanism 2, a left machining device 3 and a right machining device 4.

[0041] The bed 1 is located at the bottom of the machine tool as a support base.

[0042] The workpiece spindle mechanism 2 is mounted on the bed 1 and is used to drive the rotating of the wheel hub 100 to be processed, which is positioned thereon.

[0043] The left machining device 3 and the right machining device 4 are arranged side by side on the bed 1 and located on one side of the workpiece spindle mechanism 2, so as to process the wheel hub 100 to be processed on the workpiece spindle mechanism 2 respectively.

[0044] The left machining device 3 includes a left drive mechanism 31, a left turret mechanism 32, a screw hole machining assembly 33, an outer spoke turning tool 34, a riser roughing tool 35, and a riser finishing tool 36.

[0045] The left drive mechanism 31 is mounted on the left side of the bed 1. The left turret mechanism 32 is driven by the left drive mechanism 31. The left drive mechanism 31 is used to drive the left turret mechanism 32 to reciprocate in the forward and backward, left and right, and up and down directions.

[0046] Please see Figure 4 The left turret mechanism 32 includes a left turret base 321, a left rotation drive assembly 322, and a left cutter head 323. The left turret base 321 is driveably connected to the left drive mechanism 31. The left rotation drive assembly 322 is mounted on the left turret base 321. The left cutter head 323 is rotatably connected to the bottom of the left turret base 321 and drively connected to the left rotation drive assembly 322. The rotation axis of the left cutter head 323 is parallel to and spaced apart from the axis of the workpiece spindle mechanism 2.

[0047] The screw hole machining assembly 33, the outer spoke turning tool 34, the riser roughing tool 35, and the riser finishing tool 36 are installed at intervals at the bottom of the left cutter head 323.

[0048] The right machining device 4 includes a right drive mechanism 41, a right turret mechanism 42, a valve hole machining assembly 43, an outer rim roughing tool 44, and an outer rim finishing tool 45.

[0049] The right drive mechanism 41 is mounted on the right side of the bed 1. The right turret mechanism 42 is driven by the right drive mechanism 41. The right drive mechanism 41 is used to drive the right turret mechanism 42 to reciprocate in the forward and backward, left and right, and up and down directions.

[0050] Please see Figures 5 to 7 The right turret mechanism 42 includes a right turret base 421, a right indexing drive assembly 422, and a right tool disc 423. The right turret base 421 is driveably connected to the right drive mechanism 41. The right indexing drive assembly 422 is mounted on the right turret base 421. The right tool disc 423 is rotatably connected to the front of the right turret base 421 and drively connected to the right indexing drive assembly 422. The rotation axis of the right tool disc 423 is perpendicular to and spaced apart from the axis of the workpiece spindle mechanism 2, and is arranged in the front-to-back direction.

[0051] The valve bore machining assembly 43, the outer rim roughing tool 44, and the outer rim finishing tool 45 are installed at intervals on the front side of the right cutter head 423.

[0052] Please refer to the following: Figure 7 The valve bore machining assembly 43 includes an indexing bracket 431, a valve bore face drill 432, a valve bore recess drill 433, and a drilling drive mechanism 434. The indexing bracket 431 is mounted on the front side of the right cutter head 423. The valve bore face drill 432 and the valve bore recess drill 433 are rotatably mounted at both ends of the indexing bracket 431. The drilling drive mechanism 434 is mounted on the indexing bracket 431 and is used to drive the valve bore face drill 432 and the valve bore recess drill 433 to rotate. The drilling drive mechanism 434 can be driven by a combination of a motor and a gear transmission mechanism.

[0053] Please refer to the following: Figure 8 and Figure 9 According to the design angle of the valve hole of the wheel hub 100 to be processed, the right rotation drive assembly 422 drives the right cutter head 423 to rotate, so that the axes of the valve hole front drill 432 and the valve hole recess drill 433 installed on it are aligned with the valve hole axis one after the other.

[0054] Use a 432 drill bit to complete the front machining of the valve bore after alignment;

[0055] Using the aligned valve bore squaring drill 433, perform drilling-style squaring along the axis of the machined valve bore from bottom to top.

[0056] The present invention relates to a wheel hub machining combined machining center that performs second and third stage machining sequentially. The wheel hub machining method includes:

[0057] Second-stage machining: The outer spoke turning tool 34 on the left cutter head 323 machines the outer spokes of the wheel hub 100 to be machined; the riser roughing tool 35 and riser finishing tool 36 on the left cutter head 323 machine the riser in turn; at the same time, the outer rim roughing tool 44 and outer rim finishing tool 45 on the right cutter head 423 machine part of the outer rim in turn (the part of the outer rim remaining after the first-stage machining).

[0058] Three-stage machining: The screw hole machining component 33 on the left cutter head 323 machines the bolt hole on the left side, while the valve hole front drill 432 on the right cutter head 423 machines the valve hole on the front side; then the valve hole recessing drill 433 is rotated and switched to machine the valve hole recess in the opposite direction, while the screw hole machining component 33 on the left cutter head 323 machines the bolt hole on the right side.

[0059] In this embodiment, the right cutter head 423 includes a disc body 4231 rotatably connected to the right turret base 421, and a roughing tool arm 4232 and a finishing tool arm 4233 fixedly connected to the outer periphery of the disc body 4231. A valve bore machining assembly 43 is mounted on the disc body 4231. An outer rim roughing tool 44 and an outer rim finishing tool 45 are respectively mounted on the roughing tool arm 4232 and the finishing tool arm 4233.

[0060] The right-hand cutterhead structure provided by this invention integrates turning and drilling functional components in a specific layout onto the same rotating unit, achieving the following beneficial effects:

[0061] I. Achieve multi-functional integration and structural integration to improve system rigidity and reliability.

[0062] By mounting the valve bore machining assembly 43 onto the disc body 4231, and fixing the outer rim roughing tool 44 and finish tool 45 onto the roughing tool arm 4232 and finish tool arm 4233 respectively, this invention integrates valve bore drilling and outer rim turning functions onto the same rotating cutter head. This integrated structure avoids the need for separate turrets or additional power tool holders for different processes, reduces the number of moving parts and connection interfaces, thereby enhancing the rigidity, stability, and dynamic response accuracy of the overall structure, which is beneficial for ensuring consistency during long-term machining.

[0063] II. Supports collaborative processing and synchronous angle adjustment, significantly shortening processing cycle time.

[0064] Since the valve bore machining assembly 43, the roughing tool arm 4232, and the finishing tool arm 4233 are all fixed on the same disc body 4231, when the right cutter disc 423 rotates to the corresponding valve bore machining angle according to the wheel hub model, the orientation of the turning tool is also determined simultaneously. This design allows the turret to perform the outer rim turning and valve bore drilling processes sequentially or according to a program in a single positioning, eliminating the need for turret reset, tool resetting, or tool holder replacement between processes. This greatly reduces auxiliary time and improves machining continuity and overall production efficiency.

[0065] III. Optimize spatial layout and enhance machine tool compactness

[0066] The layout of the roughing tool arm 4232 and the finishing tool arm 4233, which extend fixedly along the outer periphery of the disc body 4231, makes full use of the radial space at the center of the disc's rotation. This allows the turning tools to be naturally separated from the valve hole machining assembly 43 located in the center of the disc, without interference. This design achieves a high-density arrangement of multiple tools within a limited space, supports the development of the overall machine tool structure towards a more compact and integrated direction, helps reduce the equipment's footprint, and makes high-density production line layouts possible.

[0067] IV. Ensure the relative positional accuracy between tools to improve machining consistency.

[0068] All machining tools use the rotation axis of the disc body 4231 as a common positioning reference, and their relative positions remain highly stable after the cutter head rotates. This not only reduces the risk of cumulative errors caused by multiple tool changes or the use of multiple independent tool holders, but also ensures the relative positional accuracy between features such as valve holes and outer rims. It is particularly suitable for wheel products with strict geometric tolerances, improving process capability and product yield.

[0069] V. Reduce tooling and fixture costs and improve production flexibility

[0070] This integrated structure reduces reliance on dedicated composite angle tool holders, non-standard turning tool holders, and independent powered turrets. Most tools can be standard models, significantly reducing tool procurement, inventory, and management costs. Furthermore, during product changeovers, only the tool head angle needs adjustment and a few tools need to be replaced, simplifying the setup process, shortening changeover time, and enhancing the production line's adaptability to multi-variety, small-batch wheel hub production.

[0071] In summary, this invention, through its innovative right-hand cutter head structure, ingeniously integrates angle adjustment, turning, and drilling functions into one unit, achieving remarkable synergistic effects in terms of simplified structure, space saving, improved efficiency, guaranteed accuracy, and reduced costs.

[0072] In this embodiment, please refer to Figures 5 to 7 The right indexing drive assembly 422 includes an indexing gear 4221 and an indexing motor 4222. The indexing gear 4221 is mounted on the right tool head 423 and located on one side of the right turret base 421. The indexing motor 4222 is mounted on the right turret base 421, and the output shaft of the indexing motor 4222 is meshed with the indexing gear 4221 via a gear. The indexing motor 4222 drives the indexing gear 4221 to rotate, thereby causing the right tool head 423 to rotate relative to the right turret base 421.

[0073] The right-hand drive assembly structure provided by this invention achieves the following beneficial effects through the use of direct gear transmission and a compact layout:

[0074] 1. High transmission precision and rapid response ensure accurate angle positioning.

[0075] The output shaft gear of the indexing motor 4222 directly meshes with the indexing gear 4221 mounted on the right cutter head 423, forming a rigid gear transmission pair. This transmission method has high transmission rigidity and extremely low backlash, which can effectively avoid elastic deformation and backlash errors in the transmission chain, thereby achieving high-precision and high-repeatability positioning of the right cutter head 423 angle, ensuring the accuracy of the valve hole machining angle, and meeting the high-precision machining requirements of the wheel hub.

[0076] II. Compact structure and reasonable layout, saving internal space of the dot turret.

[0077] The indexing gear 4221 is mounted on the right cutter head 423 and placed on one side of the right turret base 421. Simultaneously, the indexing motor 4222 is integrated and mounted on the right turret base 421, resulting in a compact overall layout and clear axis alignment of the drive assembly. This design avoids the use of complex timing belts, couplings, or long-distance transmission mechanisms, significantly reducing the space occupied by transmission components and facilitating the simplification and overall miniaturization of the turret's internal structure.

[0078] III. High rigidity and good load-bearing capacity, suitable for continuous high-load processing.

[0079] Gear drives offer high torque transmission capacity and overload resistance, enabling them to withstand impact loads that may occur during machining. The indexing motor 4222 directly drives the indexing gear 4221 via gears, resulting in a short transmission chain and high rigidity. This ensures the stability of the cutter head during rotational positioning and continuous machining, effectively suppressing vibration and improving the reliability and lifespan of the system under long-term, high-load operation.

[0080] IV. Easy maintenance, high reliability, and reduced operating costs

[0081] Gear drives are a mature and reliable form of mechanical transmission, characterized by low wear, long service life, and the elimination of the need for periodic tension adjustments or replacements required by belt drives. This component features a simple structure, easy assembly and disassembly, and minimal daily maintenance, reducing equipment maintenance costs and downtime, and improving equipment availability and overall efficiency.

[0082] V. Supports high dynamic response, improving processing cycle time

[0083] Direct gear drives have high transmission efficiency and dynamic response characteristics, which can support the tool disc to switch angular displacement quickly and accurately during the machining process, shorten the waiting time between processes, and are especially suitable for the frequent angle adjustment requirements in the production of multi-variety, small-batch wheel hubs, which is conducive to improving the overall machining efficiency.

[0084] In this embodiment, please refer to Figure 4 The screw hole machining assembly 33 includes a drilling motor 331 and a screw hole drill bit 332. The drilling motor 331 is mounted on the bottom of the left cutter head 323. The output shaft of the drilling motor 331 is connected to the screw hole drill bit 332 via a synchronous belt mechanism. The axis of the screw hole drill bit 332 is parallel to the axis of the workpiece spindle mechanism 2.

[0085] In this embodiment, please refer to Figures 1 to 3 The left drive mechanism 31 includes a first left-right drive member 311, a first left-right slide 312, a first front-back drive member 313, a first front-back slide 314, and a first up-down drive member 315. The first left-right drive member 311 and the first left-right slide 312 are mounted on the bed 1, and the first left-right drive member 311 is driveably connected to the first left-right slide 312. The first left-right drive member 311 drives the first left-right slide 312 to slide horizontally in the left-right direction. The first front-back drive member 313 and the first front-back slide 314 are mounted on the first left-right slide 312, and the first front-back drive member 313 is driveably connected to the first front-back slide 314. The first front-back drive member 313 drives the first front-back slide 314 to slide in the front-back direction. The first up-down drive member 315 and the left turret mechanism 32 are mounted on the first front-back slide 314. The first up-down drive member 315 is driveably connected to the left turret mechanism 32. The first vertical drive component 315 is used to drive the left turret mechanism 32 to move vertically.

[0086] The first left-right drive member 311, the first front-back drive member 313, and the first up-down drive member 315 can be electric lead screw drive devices.

[0087] In this embodiment, the right drive mechanism 41 includes a second left-right drive member 411, a second left-right slide 412, a second front-back drive member 413, a second front-back slide 414, and a second up-down drive member 415. The second left-right drive member 411 and the second left-right slide 412 are mounted on the bed 1, and the second left-right drive member 411 is driveably connected to the second left-right slide 412. The second left-right drive member 411 drives the second left-right slide 412 to slide horizontally in the left-right direction. The second front-back drive member 413 and the second front-back slide 414 are mounted on the second left-right slide 412, and the second front-back drive member 413 is driveably connected to the second front-back slide 414. The second front-back drive member 413 drives the second front-back slide 414 to slide in the front-back direction. The second up-down drive member 415 and the left turret mechanism 32 are mounted on the second front-back slide 414. The second up-down drive member 415 is driveably connected to the right turret mechanism 42. The second vertical drive component 415 is used to drive the right turret mechanism 42 to move vertically.

[0088] The second left-right drive member 411, the second front-back drive member 413, and the second up-down drive member 415 can be electric lead screw drive devices.

[0089] Please see Figure 10 The present invention also provides a wheel hub processing system, including a primary machine 10, a wheel hub turning and drilling composite machine tool 20 as described above, and a robot 30, wherein the primary machine 10 and the wheel hub turning and drilling composite machine tool 20 are arranged opposite to each other on both sides of the robot 30.

[0090] In the wheel hub machining system of this invention, the first-stage machine tool is used to machine the outer rim (partial area), inner rim, inner spokes, flange surface, and center hole of the wheel hub 100 to be machined. The wheel hub turning and drilling composite machine tool of this invention is used to machine the outer rim (partial area), outer spokes, riser (riser stop + riser groove), bolt holes, and valve holes of the wheel hub 100 to be machined, and to carve grooves at the ends of the valve holes. In this way, the new second-stage machining time is only slightly increased or equal to that of the traditional second-stage machining, but the auxiliary time such as robot operation is reduced, thereby improving the machining efficiency of the system.

[0091] Traditional wheel hub processing systems have a triangular layout, while the wheel hub processing system using the wheel hub turning and drilling composite machine tool of this invention has a rectangular layout. The new wheel hub processing system has a more compact layout and higher space utilization.

[0092] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying importance; the terms "bottom surface" and "top surface," "inner" and "outer" respectively refer to the geometric direction toward or away from a specific component.

[0093] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0094] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wheel-hub-drill-complex machine tool, characterized by, It comprises: a bed body (1); a workpiece spindle mechanism (2) arranged on the bed body (1) and used for driving a to-be-processed hub (100) to rotate; a right machining device (4) arranged on the bed body (1) and located at one side of the workpiece spindle mechanism (2) and used for machining the to-be-processed hub (100); the right machining device (4) comprises a right driving mechanism (41) and a right tool turret mechanism (42); the right tool turret mechanism (42) comprises a right tool disc (423), the rotation axis of the right tool disc (423) is perpendicular to the axis of the workpiece spindle mechanism (2), and the rotation axis of the right tool disc (423) is arranged along the front-rear direction; a valve hole machining assembly (43) is installed on the right tool disc (423), the valve hole machining assembly (43) comprises a indexing support (431), a valve hole front face drill (432) and a valve hole groove drill (433); the indexing support (431) is installed on the right tool disc (423), and the valve hole front face drill (432) and the valve hole groove drill (433) are respectively installed on the indexing support (431); wherein, the right tool disc (423) can rotate to adjust the axis of the valve hole front face drill (432) and the valve hole groove drill (433) to be aligned with the valve hole axis of the to-be-processed hub (100), the valve hole front face drill (432) is configured to machine the valve hole front face of the to-be-processed hub (100), and the valve hole groove drill (433) is configured to machine the groove of the valve hole back face of the to-be-processed hub (100).

2. The wheel-hub drill-complex machine tool according to claim 1, characterized in that, It also comprises a left machining device (3) arranged on the bed body (1) and located at one side of the workpiece spindle mechanism (2) and parallel to the right machining device (4); the left machining device (3) comprises a left driving mechanism (31) and a left tool turret mechanism (32); the left tool turret mechanism (32) comprises a left tool disc (323), and a screw hole machining assembly (33), an outer spoke turning tool (34), a sprue rough turning tool (35) and a sprue finishing turning tool (36) are installed on the left tool disc (323).

3. The wheel-hub vehicle-drill hybrid machine of claim 1, wherein, the right tool disc (423) comprises a disc main body (4231), and an outer rim rough turning tool arm (4232) and an outer rim finishing turning tool arm (4233) fixedly connected to the outer periphery of the disc main body (4231); the valve hole machining assembly (43) is installed on the disc main body (4231); an outer rim rough turning tool (44) and an outer rim finishing turning tool (45) are respectively installed on the outer rim rough turning tool arm (4232) and the outer rim finishing turning tool arm (4233).

4. The wheel-hub vehicle-drill-complex machine of claim 1, wherein, the right tool turret mechanism (42) further comprises a right indexing driving assembly (422), the right indexing driving assembly (422) comprises an indexing gear (4221) installed on the right tool disc (423) and an indexing motor (4222) installed on a right tool turret seat (421), the output shaft of the indexing motor (4222) is engaged with the indexing gear (4221) through a gear, and is used for driving the right tool disc (423) to rotate.

5. The wheel-hub vehicle-drill-composite-machine tool according to claim 1, wherein, The valve hole processing assembly (43) further comprises a drilling driving mechanism (434) mounted on the indexing support (431) for driving the valve hole front drilling (432) and / or the valve hole recess drilling (433) to rotate.

6. The wheel-hub vehicle drill-composite machine tool according to claim 2, wherein, The right driving mechanism (41) and / or the left driving mechanism (31) comprises a driving member and a slide table combination structure for driving the corresponding tool turret mechanism to reciprocate in front-back, left-right and up-down directions.

7. The wheel-hub vehicle drill-composite machine tool according to claim 2, wherein, The screw hole processing assembly (33) comprises a drilling motor (331) and a screw hole drill bit (332) drivingly connected with an output shaft of the drilling motor (331), and an axis of the screw hole drill bit (332) is arranged in parallel with an axis of the workpiece spindle mechanism (2).

8. A method of machining a wheel hub based on the wheel hub drill composite machine tool of claim 2, characterized by, The method comprises the steps of: adjusting a rotation angle of the right tool disc (423) so that an axis of the valve hole front drilling (432) on the indexing support (431) is aligned with an axis of a valve hole of a to-be-processed hub (100); processing a valve hole front face using the aligned valve hole front drilling (432); adjusting the rotation angle of the right tool disc (423) so that an axis of the valve hole recess drilling (433) on the indexing support (431) is aligned with an axis of the processed valve hole; processing a valve hole recess from bottom to top along the axis of the processed valve hole using the valve hole recess drilling (433).

9. The method of claim 8, wherein the wheel machining method of the wheel and drill composite machine tool is characterized by, The hub drilling and turning compound machine tool sequentially performs two-order and three-order processing of a hub, wherein: the two-order processing comprises processing outer spokes and sprues using cutters on the left tool disc (323) and processing an outer rim using a turning tool on the right tool disc (423); the three-order processing comprises processing bolt holes using a screw hole processing assembly (33) on the left tool disc (323) and processing a valve hole front face using a valve hole front drilling (432) on the right tool disc (423), and then processing a valve hole recess using a valve hole recess drilling (433) on the right tool disc (423).

10. A wheel hub machining system characterized by, The method comprises the steps of: a first-order main machine (10) for performing first-order processing of a hub; a hub drilling and turning compound machine tool (20) as claimed in any one of claims 1-7 for performing two-order and three-order processing of a hub; a robot (30) arranged between the first-order main machine (10) and the hub drilling and turning compound machine tool (20) for transferring a to-be-processed hub (100) between the first-order main machine (10) and the hub drilling and turning compound machine tool (20).

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