A wheel hub machining apparatus

Abstract

The application discloses a kind of wheel hub processing equipment, belong to automobile wheel hub processing technical field, including base, multiple fixture seats and the numerical control milling cutter being set on base;Each fixture seat is separately provided with positioning part. Positioning part includes slidingly connected on fixture seat longitudinal shift disc, slidingly connected on longitudinal shift disc guide plate and rotationally connected on fixture seat screw rod;Fixture seat rotation can drive guide plate sliding. When wheel hub is located in the upper end of fixture seat, screw rod rotation drives longitudinal shift disc sliding, so that wheel hub hole position is filled. When wheel hub is located in the lower end of fixture seat, screw rod rotation drives longitudinal shift disc rotation and in turn makes wheel hub rotate. The present application can mill wheel hub end face, and automatically position and fix the wheel hub placed;It can fill each hole position on wheel hub when milling, prevent debris from entering into hole;It can remove debris and milling fluid attached and clamped on wheel hub after milling.

Description

Technical Field

[0001] This invention belongs to the field of automotive wheel hub processing technology, and more specifically, relates to a wheel hub processing equipment. Background Technology

[0002] Chinese patent document CN106395328B discloses an automatic wheel hub tilting and debris removal device. The feeding roller is driven by a motor. Two guide rods or rails, parallel to and spaced apart from the feeding roller, are positioned between left and right supports below the central feeding roller. Two sliding blocks are slidably mounted on the guide rods or rails, each with a clamping part at both ends. The clamping parts extend upwards from the gap between the two feeding rollers. The sliding blocks are driven by a cylinder to move axially along the guide rods or rails. A debris box is mounted on the frame below the feeding roller, containing a compressed air nozzle that blows off impurities from the wheel hub. The advantages are: some debris falls from the wheel hub onto the debris box under its own weight; the compressed air from the nozzle acts on the wheel hub, blowing off the debris adhering to it, thus automatically cleaning the wheel hub of debris, leaving no debris residue. The device has a simple structure and high debris removal efficiency. Chinese patent document CN217750626U discloses a waste chip removal device for wheel hub processing, including a working frame. A fixed base is located at the top of the working frame, and a parallel cylinder is located at the top of the fixed base. The two output ends of the parallel cylinder are respectively equipped with a first clamping assembly and a second clamping assembly for clamping and flipping the wheel hub workpiece. An air blowing assembly is located above the parallel cylinder between the first and second clamping assemblies. This invention features high efficiency and thorough chip removal. Because modern wheel hubs often have complex structures such as grooves and patterns on their outer surface, milling chips get stuck in the grooves during milling and cannot be easily blown out. At the same time, the chips also get stuck in the holes (screw holes and center hole) of the wheel hub, which also increases the difficulty of chip removal. Therefore, the above solution can no longer meet the actual use requirements. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a wheel hub processing equipment that can fill the holes during milling to prevent the entry of chips, and can spin-dry the wheel hub after milling to separate the chips and milling fluid.

[0004] The present invention provides a wheel hub processing device, comprising a base, a plurality of horizontally arranged jig seats with rotating shafts rotatably connected to the base for clamping wheel hubs, and a CNC milling cutter disposed on the base for milling the end face of the wheel hub; each of the jig seats is provided with a positioning part.

[0005] The positioning part includes a longitudinally sliding disk that can fill various holes on the hub, a guide plate that is radially slidingly connected to the longitudinally sliding disk and can be slidably connected to the clamping seat, and a lead screw that is rotatably connected to the clamping seat and can be drivenly connected to the longitudinally sliding disk; the rotation of the clamping seat can drive the guide plate to slide.

[0006] When the hub is located at the upper end of the fixture seat, the guide plate is slidably connected to the fixture seat, and the screw rotates to drive the longitudinal transfer plate to slide, so that the hub hole is filled and milling debris is prevented from getting stuck in the hole.

[0007] When the hub is located at the lower end of the fixture seat, the guide plate does not contact the fixture seat. The rotation of the lead screw drives the longitudinal transfer plate to rotate, thereby causing the hub to rotate and causing the attached debris and milling fluid to be thrown off.

[0008] As a further improvement of the present invention, each of the clamp seats is provided with a locking part; the locking part includes a rotating ring rotatably connected to the clamp seat, a plurality of pressure plates for clamping the wheel hub with one end rotatably connected to the rotating ring, and a plurality of lifting blocks slidably connected to the clamp seat and capable of driving the corresponding pressure plates to rotate respectively; the sliding of the longitudinal transfer plate can drive the lifting blocks to slide synchronously.

[0009] When the longitudinal transfer plate is at its extreme position far from the wheel hub, the pressure plate cannot contact the wheel hub; when the longitudinal transfer plate is at its extreme position close to the wheel hub, the hole in the wheel hub is filled, and the pressure plate presses the wheel hub.

[0010] As a further improvement of the present invention, the pressure plate is formed with an eccentric groove; the locking part further includes a plurality of pull rods that are longitudinally slidably connected to the rotating ring and are respectively used to drive the corresponding eccentric groove to rotate, a pressure ring that is longitudinally slidably connected to the clamp seat and rotatably connected to the lower end of the pull rod, and a plurality of levers that are rotatably connected to the clamp seat and are drivenly connected to the pressure ring; the lifting block slides to drive the lever to rotate; an unlocking spring is provided between the pull rod and the rotating ring for causing the pull rod to slide upward and thereby causing the pressure plate to rotate to a position where it does not contact the hub.

[0011] As a further improvement of the present invention, the middle part of the lever is rotatably connected to the clamp seat; the pressure ring is formed with a plurality of horizontally arranged grooves that are slidably connected to one end of the lever; the lower end of the lifting block is formed with an opening groove for driving the other end of the lever to rotate.

[0012] As a further improvement of the present invention, the upper end of the base is rotatably connected to a vertically arranged central column with a rotating shaft; each of the clamp seats is evenly arranged on the outer periphery of the central column and rotatably connected to the central column; one end of the clamp seat facing the central column is formed with a rotating column rotatably connected to the central column; the outer wall of the rotating column is formed with two symmetrically arranged recesses; the base is provided with a stop ring that can abut against the inner wall of the recess; the upper end of the stop ring is formed with a groove that cannot contact the recess.

[0013] When the notch and the groove are aligned, the clamp seat can rotate around the rotating column; when the notch and the groove are not aligned, the stop ring restricts the rotation of the clamp seat.

[0014] As a further improvement of the present invention, the outer wall of the rotating column is formed with a coaxially arranged flip gear; the base is provided with multiple segments of flip racks arranged in the circumferential direction that can be connected to the flip gear for transmission; when the flip gear passes the flip rack, the flip gear rotates half a turn.

[0015] When the notch and the groove are aligned, the flip rack and the flip gear are connected in a driving connection; when the notch and the groove are not aligned, the flip rack and the flip gear are not in contact.

[0016] As a further improvement of the present invention, a plurality of pistons are slidably connected longitudinally to the upper end of the longitudinal transfer disk and are arranged at equal intervals along the circumferential direction; a piston spring is provided between the piston and the longitudinal transfer disk for sliding the piston towards the hub; and a friction wheel capable of driving the hub to rotate is provided on the base.

[0017] As a further improvement of the present invention, the positioning part further includes a plurality of counterweights slidably connected to the longitudinal transfer plate and respectively drivingly connected to the corresponding guide plate; the guide plate is formed with an inclined transmission groove on the side near the counterweight; the counterweight is formed with a transmission column slidably connected to the transmission groove; the counterweight slides under the action of gravity.

[0018] As a further improvement of the present invention, a collection cylinder for collecting milling fluid and chips is provided on the base below each of the fixture seats.

[0019] As a further improvement of the present invention, the positioning part further includes a positioning motor fixedly connected to the fixture seat and driven by the lead screw; a motor gear is fixedly connected to the output shaft of the positioning motor; and a lead screw gear is fixedly connected to the lower end of the lead screw and driven by the motor gear.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: After the cast aluminum wheel hub is demolded and rough machined, the outer end face of the wheel hub often has decorative patterns, so burrs and other phenomena will appear. It is necessary to perform fine machining, that is, CNC milling of the end face, to make the outer end face surface smooth and beautiful. However, the milled aluminum chips will enter the screw hole or center hole at this time, which is not easy to remove, increasing the amount of manual labor.

[0021] The operator places the wheel hub, with its outer end facing upwards, at the center of the upper end of the rightmost clamp seat. Then, the main switch is turned on. The controller activates the shifting motor, causing the central rotating column to rotate to the left, which in turn causes each clamp seat to rotate in the opposite direction around the central rotating column. Simultaneously, the controller synchronously activates the positioning motor, causing its gears to rotate forward. This forward rotation of the motor gears drives the lead screw gear, which in turn causes the lead screw to rotate forward. With the counterweight at its lower limit position, the guide plate is positioned within the guide groove, preventing the longitudinal transfer plate from rotating circumferentially. The forward rotation of the lead screw causes the longitudinal transfer plate to slide upwards.

[0022] The upward sliding of the longitudinal plate abuts against the upper end of the lifting block, causing the lifting block to slide upward, which in turn causes the opening groove to slide upward. The sliding of the opening groove causes the lever to rotate, and the rotation of the lever causes the dial groove to slide downward, which in turn causes the pressure ring to slide downward. The downward sliding of the pressure ring causes the inner groove to slide downward, which in turn causes the pull rod to slide downward. The downward sliding of the pull rod causes the eccentrically set groove to move downward, which in turn causes the pressure plate to rotate downward, releasing the compression and storage of the unlocking spring. The sliding of the longitudinal plate simultaneously causes the plunger and positioning pin to slide upward.

[0023] After a certain time T1, the longitudinal transfer plate moves upward to its upper limit position, and the controller stops the positioning motor. At this time, the positioning pin moves upward and enters the center hole of the hub, filling the center hole. The plunger moves upward until it abuts against the lower end of the hub, and the plunger spring is compressed and stores force. At the same time, the pressure ring moves downward to its lower limit position, and the pressure plate rotates downward to press against the lower end of the hub, fixing the hub and the rotating ring relative to each other.

[0024] Next, the central column continues to rotate, driving the hub to rotate. The rotating hub comes into contact with the friction wheel, causing relative movement and further rotation of the hub. This rotation drives the screw hole to rotate, aligning it with the plunger. Under the spring force of the plunger spring, the plunger slides upwards to its upper limit position, filling the screw hole. The hub can no longer rotate, remaining fixed relative to the fixture. The hub then slides relative to the friction wheel. After a certain time T2, the controller stops the shifting motor, and the central column rotates one-third of a revolution, moving the hub to its limit position near the CNC milling cutter. Simultaneously, the new empty fixture moves back to its rightmost position, allowing the operator to place the hub onto the new fixture following the same steps.

[0025] Next, the controller directs the CNC milling cutter to mill the outer end face of the hub. During the milling process, milling fluid is sprayed onto the hub to cool the cutter and flush away some of the chips, which flow into the chip removal hole below and then into the collection cylinder. During this process, the center hole and screw hole are filled with locating pins and plugs respectively, preventing the milled aluminum chips from entering the holes and thus avoiding chip jamming. This eliminates the need for manual intervention and greatly improves processing efficiency.

[0026] After a certain time T3, the milling of the wheel hub end face is completed, and the controller controls the CNC milling cutter to return to its original position. At this time, there are still milling debris remaining on the wheel hub end face, especially the debris in the grooves of the pattern. The debris is stuck in the grooves and cannot be washed away by the milling fluid. At the same time, there will also be debris mixed with the milling fluid and adsorbed on the wheel hub, which need to be removed.

[0027] The controller then controls the central column to rotate one-third of a turn in the opposite direction. During this process, the fixture seat near the CNC milling cutter rotates synchronously, driving the rotating column and the tilting gear to rotate. The rotation of the rotating column causes the notch to move synchronously, thus aligning the notch with the groove, allowing the fixture seat to rotate. At this time, the tilting gear rotates to connect with the tilting rack drive. The central column continues to rotate, driving the tilting gear to rotate relative to the tilting rack, thus causing the fixture seat to rotate. When the tilting gear and tilting rack drive ends, the fixture seat rotates half a turn, moving the hub below the fixture seat. Some debris and milling fluid on the upper surface of the hub can fall downwards into the collection cylinder under gravity. The central column continues to rotate, the notch is no longer aligned with the groove, and the bottom of the notch abuts against the upper end of the stop ring, restricting the rotation of the rotating column, i.e., restricting the rotation of the fixture seat.

[0028] At this point, the counterweight is positioned below and will slide downwards under gravity, causing the transmission column to slide downwards. This downward movement of the transmission column causes the inclined transmission groove to slide, allowing the guide plate to slide until it no longer contacts the guide groove, enabling the longitudinal transfer plate to rotate relative to it. Simultaneously, the adjacent fixture moves to a position close to the CNC milling cutter for milling. During this process, the controller synchronously controls the positioning motor to rotate the lead screw in the forward direction. This forward rotation of the lead screw drives the longitudinal transfer plate to rotate in the forward direction, thus rotating the hub. Debris adhering to the bottom of the hub will detach from the groove under the combined action of centrifugal force and gravity. Milling fluid will also be dried out under centrifugal force, facilitating further machining of the hub. To improve chip removal efficiency, the positioning motor rotates at a non-uniform speed, switching between high and low speeds, and between forward and reverse rotations, to prevent debris from remaining stuck in the groove under centrifugal force.

[0029] After a certain time (T3), the subsequent milling of the wheel hub end face is completed, and the debris on the wheel hub end face is also cleaned up. The controller then controls the CNC milling cutter to return to its original position and simultaneously controls the positioning motor to stop working. Subsequently, the controller controls the central column to rotate in the opposite direction by one-third of a turn. The central column drives the inverted fixture seat to rotate, causing the flipping gear on the fixture seat to rotate and connect with the next flipping rack drive, thereby causing the inverted fixture seat to flip again by half a turn. Under the action of gravity, the counterweight slides downward, causing the guide plate to slide outward until it abuts against the fixture seat, which then moves to its original position on the far right.

[0030] Subsequently, while controlling the CNC milling cutter to perform milling, the controller simultaneously controls the positioning motor to cause the lead screw to rotate in the opposite direction. This reverse rotation of the lead screw drives the longitudinal transfer plate to rotate in the opposite direction, causing the guide plate to rotate until it is aligned with the guide groove. The guide plate slides into the guide groove, preventing the longitudinal transfer plate from rotating circumferentially. The reverse rotation of the lead screw causes the longitudinal transfer plate to slide downwards. The longitudinal transfer plate no longer abuts against the upper lifting block, and the pull rod slides upwards to its original position under the force of the unlocking spring, causing the pressure ring to slide upwards to its upper limit position. The pressure plate rotates until it no longer contacts the hub, allowing the hub to be easily removed. After a certain time T1, the longitudinal transfer plate moves to its lower limit position, and the controller stops the positioning motor. After removing the milled hub, the hub to be milled is placed back on the upper end of the fixture, awaiting the next processing cycle.

[0031] This invention features a fixture base that rotates around a central column, allowing for switching between processing stations. Loading and unloading, end-face milling, and debris removal are performed simultaneously at each station, shortening processing time, improving processing efficiency, and consequently increasing production efficiency. The fixture base's rotation around the central column also rotates the hub half a turn, causing the milled debris and milling fluid used for rinsing to flip downwards and fall off under gravity, facilitating further processing of the hub without manual intervention and reducing workload.

[0032] This invention features a counterweight that slides downwards under gravity. When the guide plate is within the guide groove, the longitudinal transfer plate cannot rotate circumferentially. The rotation of the lead screw drives the longitudinal transfer plate to slide longitudinally, allowing the plunger and positioning pin to enter the corresponding screw holes and center holes, preventing debris from getting stuck and reducing manual intervention. When the fixture seat rotates half a turn and the guide plate is no longer in contact with the guide groove, the rotation of the lead screw drives the longitudinal transfer plate to rotate circumferentially, causing the debris and milling fluid adhering to the hub to be thrown off under centrifugal force, facilitating further processing of the hub. Only one power mechanism is required, without adding new power mechanisms or operating steps, making it simple and convenient to use.

[0033] This invention features a longitudinal traverse plate. When the traverse plate is at its lower limit position, the positioning pin is located below the fixture seat, facilitating the replacement of the hub above the fixture seat without having to lift the hub very high, thus reducing manual labor intensity. When the traverse plate is at its upper limit position, the plug and positioning pin enter the corresponding screw holes and center holes, preventing debris from getting stuck in the holes. At the same time, the traverse plate slides upward, causing the pressure plate to rotate and press the hub, fixing the hub relative to the fixture seat and preventing hub displacement during milling, thus ensuring machining accuracy without adding new motion mechanisms or operating steps.

[0034] This invention can mill the end face of the wheel hub and automatically position and fix the placed wheel hub, reducing the intensity of manual labor; during milling, this invention can fill the holes on the wheel hub to prevent debris from entering the holes, reducing manual intervention and improving processing efficiency; this invention can remove debris and milling fluid adhering to and stuck on the wheel hub after milling, facilitating the next processing of the wheel hub and improving processing efficiency. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is an exploded structural diagram of the present invention; Figure 4 This is a schematic diagram of the structure of the base of the present invention. Figure 5 This is a cross-sectional view of the fixture base of the present invention; Figure 6 This is an exploded structural diagram of the positioning part of the present invention; Figure 7 This is an exploded structural diagram of the locking part of the present invention; Figure 8 This is a structural diagram showing the working state of the present invention.

[0036] Explanation of the numbers in the diagram: 10. Base; 101. Stop ring; 102. Tilting rack; 103. Groove; 104. Collecting cylinder; 11. Friction wheel; 12. Positioning motor; 13. Central column; 20. CNC milling cutter; 30. Fixture base; 301. Rotating column; 302. Notch; 303. Tilting gear; 304. Guide groove; 305. Chip removal hole; 4. Positioning part; 41. Longitudinal transfer plate; 42. Plug; 43. Plug spring; 44. Positioning 45. Column; 46. Positioning spring; 47. Guide plate; 48. Transmission slant groove; 49. Counterweight block; 40. Transmission column; 41. Lead screw; 42. Lead screw gear; 43. Positioning motor; 44. Motor gear; 55. Locking part; 56. Rotating ring; 57. Pressure plate; 58. Eccentric groove; 59. Pull rod; 50. Unlocking spring; 51. Pressure ring; 52. Gutter; 53. Inner groove; 54. Lever; 55. Lifting block; 56. Opening groove. Detailed Implementation

[0037] Specific Implementation Example 1: Please refer to Figure 1-8 A wheel hub processing device includes a base 10, a plurality of horizontally arranged jig seats 30 rotatably connected to the base 10 and capable of clamping wheel hubs, and a CNC milling cutter 20 disposed on the base 10 for milling the end face of the wheel hub; each of the jig seats 30 is provided with a positioning part 4.

[0038] A central hole for positioning is formed in the center of the hub; multiple screw holes for installation are formed around the central hole and are evenly arranged in the circumferential direction. When milling the end face of the hub, milling debris may get stuck in the holes and is not easy to remove, which increases the workload.

[0039] The positioning part 4 includes a longitudinally sliding disk 41 that can fill various holes on the hub and is slidably connected to the clamping seat 30; a plurality of guide plates 46 that are slidably connected to the longitudinally sliding disk 41 and can be slidably connected to the clamping seat 30 and are evenly arranged in the circumferential direction; and a lead screw 48 that is rotatably connected to the clamping seat 30 and can be drivenly connected to the longitudinally sliding disk 41. The clamping seat 30 can rotate to drive the guide plates 46 to slide. The clamping seat 30 is formed with a plurality of longitudinally arranged guide grooves 304 that can be slidably connected to the corresponding guide plates 46 respectively. The longitudinally sliding disk 41 is formed with a threaded hole that passes through the longitudinally sliding disk 41 and is drivenly connected to the lead screw 48.

[0040] When the hub is located at the upper end of the fixture seat 30, the guide plate 46 is slidably connected to the fixture seat 30, the longitudinal transfer plate 41 cannot rotate circumferentially, and the lead screw 48 rotates to drive the longitudinal transfer plate 41 to slide, so that the hub hole is filled and milling debris is prevented from getting stuck in the hole.

[0041] When the hub is located at the lower end of the clamp seat 30, the guide plate 46 does not contact the clamp seat 30. The lead screw 48 rotates, driving the longitudinal transfer plate 41 to rotate, which in turn causes the hub to rotate, causing the attached debris and milling fluid to be thrown off under the action of gravity and centrifugal force.

[0042] Each of the clamp seats 30 is provided with a locking part 5; the locking part 5 includes a rotating ring 51 rotatably connected to the rotating shaft on the clamp seat 30 and arranged longitudinally, a plurality of pressure plates 52 for clamping the wheel hub with one end rotatably connected to the rotating ring 51, and a plurality of lifting blocks 57 slidably connected to the clamp seat 30 and capable of driving the corresponding pressure plate 52 to rotate; the longitudinal transfer plate 41 can slide to drive the lifting blocks 57 to slide synchronously.

[0043] When the longitudinal transfer plate 41 is at its extreme position far from the wheel hub, the pressure plate 52 cannot contact the wheel hub, making it easy to replace the wheel hub on the clamp seat 30; when the longitudinal transfer plate 41 is at its extreme position close to the wheel hub, the hole in the wheel hub is filled, and the pressure plate 52 presses the wheel hub.

[0044] The pressure plate 52 has an eccentric groove 521 formed on it; the locking part 5 also includes a plurality of pull rods 53 that are longitudinally slidably connected to the rotating ring 51 and are used to drive the corresponding eccentric groove 521 to rotate, a pressure ring 55 that is longitudinally slidably connected to the clamp seat 30 and rotatably connected to the lower end of the pull rod 53, and a plurality of levers 56 that are rotatably connected to the clamp seat 30 and are pulsatorically connected to the pressure ring 55; the lifting block 57 slides to drive the levers 56 to rotate; an unlocking spring 54 is provided between the pull rod 53 and the rotating ring 51 to make the pull rod 53 slide upward and thus make the pressure plate 52 rotate to a position where it does not contact the wheel hub.

[0045] The end of the pull rod 53 near the pressure plate 52 is formed with a horizontally arranged crossbar that is slidably connected to the eccentric groove 521.

[0046] The lever 56 is rotatably connected to the clamp seat 30 at its middle part; the pressure ring 55 is formed with a plurality of horizontally arranged grooves 551 that are slidably connected to one end of the lever 56; the lower end of the lifting block 57 is formed with an opening groove 571 for driving the other end of the lever 56 to rotate; the inner wall of the pressure ring 55 is formed with an inner groove 552 that is coaxially arranged and rotatably connected to the lower end of the pull rod 53.

[0047] The upper end of the base 10 is rotatably connected to a vertically arranged central column 13 with a rotating shaft; a shifting motor 12, which is drivenly connected to the central column 13, is fixedly connected to the base 10; each of the clamp seats 30 is evenly arranged on the outer periphery of the central column 13 and is rotatably connected to the central column 13; a rotating column 301, which is rotatably connected to the central column 13, is formed at one end of the clamp seat 30 facing the central column 13; two symmetrically arranged recesses 302 are formed on the outer wall of the rotating column 301; a stop ring 101 is provided on the base 10, which can abut against the inner wall of the recess 302; a groove 103, which cannot contact the recess 302, is formed on the upper end of the stop ring 101.

[0048] When the notch 302 is aligned with the groove 103, the clamp seat 30 can rotate around the rotating column 301; when the notch 302 is not aligned with the groove 103, the stop ring 101 restricts the rotation of the clamp seat 30.

[0049] The outer wall of the rotating column 301 is formed with a coaxially arranged flip gear 303; the base 10 is provided with multiple flip racks 102 arranged along the circumferential direction that can be connected to the flip gear 303 for transmission; when the flip gear 303 passes the flip rack 102, the flip gear 303 rotates half a turn.

[0050] When the notch 303 and the groove 103 are aligned, the flip rack 102 and the flip gear 303 are connected in a driving connection; when the notch 302 and the groove 103 are not aligned, the flip rack 102 and the flip gear 303 do not contact each other.

[0051] The upper end of the longitudinal transfer disk 41 is longitudinally slidably connected to a plurality of plugs 42 that are equally spaced along the circumferential direction; a plug spring 43 is provided between the plugs 42 and the longitudinal transfer disk 41 for sliding the plugs 42 toward the hub; a friction wheel 11 capable of driving the hub to rotate is provided on the base 10.

[0052] A positioning pin 44 is formed at the center of the upper end of the longitudinal transfer plate 41, which can be inserted into the center hole; a positioning spring 45 is provided between the positioning pin 44 and the longitudinal transfer plate 41 to allow the positioning pin 44 to slide toward the wheel hub.

[0053] The positioning part 4 also includes a plurality of counterweights 47 slidably connected to the longitudinal transfer plate 41 and respectively connected to the corresponding guide plate 46; the guide plate 46 has an inclined transmission groove 461 formed on the side near the counterweight 47; the counterweight 47 has a transmission column 471 slidably connected to the transmission groove 461; the counterweight 47 slides under the action of gravity.

[0054] The base 10 is provided with a collection cylinder 104 for collecting milling fluid and chips located below each of the fixture seats 30; the upper end of the fixture seat 30 is formed with a plurality of chip removal holes 305 penetrating the fixture seat 30.

[0055] The positioning part 3 also includes a positioning motor 49 fixedly connected to the clamp seat 30 and driven by the lead screw 48; a motor gear 491 is fixedly connected to the output shaft of the positioning motor 49; and a lead screw gear 481 driven by the motor gear 491 is fixedly connected to the lower end of the lead screw 48.

[0056] A controller is provided on the base 10; the CNC milling cutter 20, the shifting motor 12, and the positioning motor 49 are electrically connected to the controller.

[0057] After the cast aluminum wheel hub is demolded and rough machined, the outer end face of the wheel hub often has decorative patterns, so burrs and other phenomena will appear. It needs to be precision machined, that is, CNC milling the end face to make the outer end face smooth and beautiful. However, the aluminum chips milled out will enter the screw holes or center holes and are not easy to remove, increasing the amount of manual labor.

[0058] The operator places the wheel hub with its outer end facing upwards at the center of the upper end of the rightmost clamp seat 30. Then, the main switch is turned on, and the controller activates the shifting motor 12, causing the central rotating column 13 to rotate to the left. This causes each clamp seat 30 to rotate in the opposite direction around the central rotating column 13. Simultaneously, the controller synchronously activates the positioning motor 49, causing the motor gear 491 to rotate forward. The forward rotation of the motor gear 491 drives the lead screw gear 481 to rotate, which in turn causes the lead screw 48 to rotate forward. The counterweight 47 is positioned at its lower limit, placing the guide plate 46 within the guide groove 304. The longitudinal transfer plate 41 cannot rotate circumferentially, and the forward rotation of the lead screw 48 causes the longitudinal transfer plate 41 to slide upwards.

[0059] The upward sliding of the longitudinal transfer plate 41 abuts against the upper end of the lifting block 57, causing the lifting block 57 to slide upward, which in turn causes the opening groove 571 to slide upward. The sliding of the opening groove 571 causes the lever 56 to rotate, and the rotation of the lever 56 causes the dial groove 551 to slide downward, which in turn causes the pressure ring 55 to slide downward. The downward sliding of the pressure ring 55 causes the inner groove 552 to slide downward, and the sliding of the inner groove 552 causes the pull rod 53 to slide downward. The downward sliding of the pull rod 53 causes the eccentrically set eccentric groove 521 to move downward, which in turn causes the pressure plate 52 to rotate downward, compressing and storing the unlocking spring 54. The sliding of the longitudinal transfer plate 41 simultaneously causes the plug 42 and the positioning pin 44 to slide upward.

[0060] After a certain time T1, the longitudinal transfer plate 41 moves upward to its upper limit position, and the controller controls the positioning motor 49 to stop working. At this time, the positioning pin 44 moves upward and enters the center hole of the hub, filling the center hole. The plug pin 42 moves upward until it abuts against the lower end of the hub, and the plug pin spring 43 is compressed and stores force. At the same time, the pressure ring 55 moves downward to its lower limit position, and the pressure plate 52 rotates downward to press against the lower end of the hub, fixing the hub and the rotating ring 51 relative to each other.

[0061] Next, the central column 13 continues to rotate, driving the hub to rotate. The rotating hub will abut against and move relative to the friction wheel 11, causing the hub to rotate. The hub rotation drives the screw hole to rotate, causing the screw hole to align with the plug 42. Under the elastic force of the plug spring 43, the plug 42 slides upward to its upper limit position, filling the screw hole. The hub cannot rotate, and the hub is fixed relative to the fixture seat 30. The hub then slides relative to the friction wheel 11. After a certain time T2, the controller controls the shifting motor 12 to stop working, and the central column 13 rotates one-third of a turn, causing the hub to move to its limit position close to the CNC milling cutter 20. At the same time, the new empty fixture seat 30 moves back to the rightmost position, and the operator can place the hub on the new fixture seat 30 again following the above steps.

[0062] Next, the controller controls the CNC milling cutter 20 to mill the outer end face of the hub. During the milling process, milling fluid is sprayed onto the hub to cool the cutter and flush away some of the chips, which flow into the chip removal hole 305 below and then into the collection cylinder 104. During this process, the center hole and screw hole are filled by the positioning pin 44 and the plug pin 42 respectively, preventing the milled aluminum chips from entering the holes. This prevents aluminum chips from getting stuck in the holes, eliminating the need for manual intervention and greatly improving processing efficiency.

[0063] After a certain time T3, the milling of the wheel hub end face is completed. The controller controls the CNC milling cutter 20 to return to its original position. At this time, there are still milling debris remaining on the wheel hub end face, especially the debris in the grooves of the pattern. The debris is stuck in the grooves and cannot be washed away by the milling fluid. At the same time, there will also be debris mixed with the milling fluid and adsorbed on the wheel hub, which need to be removed.

[0064] The controller then controls the central column 13 to rotate in the opposite direction by one-third of a turn. During this process, the fixture seat 30 near the CNC milling cutter 20 rotates synchronously, driving the rotating column 301 and the reversing gear 303 to rotate. The rotation of the rotating column 301 drives the notch 302 to move synchronously, thus causing the notch 302 to rotate until it is directly opposite the groove 103, allowing the fixture seat 30 to rotate. At this time, the reversing gear 303 rotates to engage with the reversing rack 102. The central column 13 continues to rotate, driving the reversing gear 303 to rotate relative to the reversing rack 102, thus causing the fixture seat 30 to rotate. After the reversing gear 303 and the reversing rack 102 have finished their transmission, the fixture seat 30 rotates half a turn, causing the hub to move below the fixture seat 30. Some of the chips and milling fluid on the upper surface of the hub can fall downwards into the collection cylinder 104 under the action of gravity. As the central column 13 continues to rotate, the notch 302 is no longer directly opposite the groove 103. The bottom end of the notch 302 abuts against the upper end of the stop ring 101, thus restricting the rotation of the rotating column 301, which in turn restricts the rotation of the clamp seat 30.

[0065] At this point, the counterweight 47 is positioned below and will slide downwards under gravity, thereby causing the transmission column 471 to slide downwards. The downward sliding of the transmission column 471 causes the inclined transmission groove 461 to slide, which in turn causes the guide plate 46 to slide until it no longer contacts the guide groove 304, allowing the longitudinal transfer plate 41 to rotate relative to it. Simultaneously, the adjacent fixture seat 30 moves to a position close to the CNC milling cutter 20 for milling. During this process, the controller synchronously controls the positioning motor 49 to work, causing the lead screw 48 to rotate in the forward direction. The forward rotation of the lead screw 48 causes the longitudinal transfer plate 41 to rotate in the forward direction, which in turn causes the hub to rotate. The debris attached to the bottom of the hub will detach from the groove under the combined action of centrifugal force and gravity, and the milling fluid will also be dried under the action of centrifugal force, facilitating the next step of machining the hub. To improve the chip removal effect, the positioning motor 49 rotates at a non-uniform speed, that is, it switches between high-speed rotation and low-speed rotation, and between forward rotation and reverse rotation, to prevent the debris from continuously getting stuck in the groove under the action of centrifugal force.

[0066] After a certain time T3, the subsequent milling of the wheel hub end face is completed, and the debris on the wheel hub end face is also cleaned up. The controller then controls the CNC milling cutter 20 to return to its original position and simultaneously controls the positioning motor 49 to stop working. Subsequently, the controller controls the central column 13 to rotate in the opposite direction by one-third of a turn. The central column 13 drives the inverted fixture seat 30 to rotate, causing the flip gear 303 on the fixture seat 30 to rotate and connect with the next flip rack 102, thereby causing the inverted fixture seat 30 to flip again by half a turn. Under the action of gravity, the counterweight 47 slides downward, causing the guide plate 46 to slide outward until it abuts against the fixture seat 30, and the fixture seat 30 moves to its original position on the far right.

[0067] Subsequently, while controlling the CNC milling cutter 20 to perform milling, the controller simultaneously controls the positioning motor 49 to operate, causing the lead screw 48 to rotate in the reverse direction. The reverse rotation of the lead screw 48 drives the longitudinal transfer plate 41 to rotate in the reverse direction, thereby causing the guide plate 46 to rotate to be directly opposite the guide groove 304. The guide plate 46 slides into the guide groove 304, and the longitudinal transfer plate 41 cannot rotate circumferentially. The reverse rotation of the lead screw 48 causes the longitudinal transfer plate 41 to slide downward. The longitudinal transfer plate 41 no longer abuts against the upper lifting block 57, and the pull rod 53 slides upward to its original position under the elastic force of the unlocking spring 54, causing the pressure ring 55 to slide upward to its upper limit position. The pressure plate 52 rotates until it no longer contacts the hub, and the hub can be easily removed. After a certain time T1, the longitudinal transfer plate 41 moves to its lower limit position, and the controller controls the positioning motor 49 to stop working. After removing the milled hub, the hub to be milled is placed back on the upper end of the fixture seat 30, waiting for the next processing cycle.

[0068] The present invention features a fixture base 30 that rotates around a central rotating column 13, enabling switching between processing stations. Loading and unloading, end milling, and chip removal are performed simultaneously at each station, shortening processing time, improving processing efficiency, and thus increasing production efficiency. The fixture base 30 rotates around a rotating column 301, which can rotate the hub half a turn, causing the milled chips and milling fluid used for rinsing on the upper end of the hub to flip downwards and fall off under gravity, facilitating further processing of the hub without manual intervention and reducing manual workload.

[0069] This invention features a counterweight 47 that slides downwards under gravity. When the guide plate 46 is within the guide groove 304, the longitudinal transfer disk 41 cannot rotate circumferentially. The rotation of the lead screw 48 causes the longitudinal transfer disk 41 to slide longitudinally, thereby allowing the plunger 42 and positioning pin 44 to enter the corresponding screw holes and center holes, preventing debris from getting stuck in the holes and reducing manual intervention. When the fixture seat 30 rotates half a turn and the guide plate 46 is no longer in contact with the guide groove 304, the rotation of the lead screw 48 causes the longitudinal transfer disk 41 to rotate circumferentially, thereby causing the debris and milling fluid adhering to the hub to be thrown off under centrifugal force, facilitating further processing of the hub. Only one power mechanism is required, without adding new power mechanisms or operating steps, making it simple and convenient to use.

[0070] This invention features a longitudinal transfer plate 41. When the longitudinal transfer plate 41 is at its lower limit position, the positioning pin 44 is located below the fixture seat 30, facilitating the replacement of the hub above the fixture seat 30 without having to lift the hub very high, thus reducing manual labor intensity. When the longitudinal transfer plate 41 is at its upper limit position, the plug pin 42 and the positioning pin 44 enter the corresponding screw holes and center holes, preventing debris from getting stuck in the holes. At the same time, the longitudinal transfer plate 41 slides upward, causing the pressure plate 52 to rotate and press the hub, fixing the hub relative to the fixture seat 30, preventing the hub from shifting during milling, ensuring machining accuracy, without adding new motion mechanisms or operating steps.

[0071] This invention can mill the end face of the wheel hub and automatically position and fix the placed wheel hub, reducing the intensity of manual labor; during milling, this invention can fill the holes on the wheel hub to prevent debris from entering the holes, reducing manual intervention and improving processing efficiency; this invention can remove debris and milling fluid adhering to and stuck on the wheel hub after milling, facilitating the next processing of the wheel hub and improving processing efficiency.

Claims

1. A wheel hub processing equipment, characterized in that: It includes a base (10), a clamping seat (30) with multiple rotating shafts rotatably connected to the base (10) and horizontally arranged to clamp the hub, and a CNC milling cutter (20) disposed on the base (10) for milling the end face of the hub; each of the clamping seats (30) is provided with a positioning part (4); The positioning part (4) includes a longitudinal sliding disk (41) that is longitudinally slidably connected to the clamp seat (30) and capable of filling each hole on the hub, a guide plate (46) that is radially slidably connected to the longitudinal sliding disk (41) and capable of slidingly connecting with the clamp seat (30), and a lead screw (48) that is rotatably connected to the clamp seat (30) and capable of drivingly connecting with the longitudinal sliding disk (41); the rotation of the clamp seat (30) can drive the guide plate (46) to slide; When the hub is located at the upper end of the fixture seat (30), the guide plate (46) is slidably connected to the fixture seat (30), and the lead screw (48) rotates to drive the longitudinal transfer plate (41) to slide, so that the hub hole is filled and milling chips are prevented from getting stuck in the hole; When the hub is located at the lower end of the fixture seat (30), the guide plate (46) does not contact the fixture seat (30), the lead screw (48) rotates and drives the longitudinal transfer plate (41) to rotate, thereby causing the hub to rotate, so that the attached debris and milling fluid are thrown off.

2. The wheel hub processing equipment as described in claim 1, characterized in that: Each of the clamp seats (30) is provided with a locking part (5); the locking part (5) includes a rotating ring (51) rotatably connected to the clamp seat (30), a plurality of pressure plates (52) for clamping the wheel hub with one end rotatably connected to the rotating ring (51), and a plurality of lifting blocks (57) slidably connected to the clamp seat (30) and capable of driving the corresponding pressure plates (52) to rotate respectively; the longitudinal transfer plate (41) can slide to drive the lifting blocks (57) to slide synchronously; When the longitudinal transfer plate (41) is at its extreme position far from the hub, the pressure plate (52) cannot contact the hub; when the longitudinal transfer plate (41) is at its extreme position close to the hub, the hub's holes are filled and the pressure plate (52) presses the hub.

3. The wheel hub processing equipment as described in claim 2, characterized in that: The pressure plate (52) is formed with an eccentric groove (521); the locking part (5) also includes a plurality of pull rods (53) that are longitudinally slidably connected to the rotating ring (51) and are used to drive the corresponding eccentric grooves (521) to rotate, a pressure ring (55) that is longitudinally slidably connected to the clamp seat (30) and rotatably connected to the lower end of the pull rod (53), and a plurality of levers (56) that are rotatably connected to the clamp seat (30) and are drively connected to the pressure ring (55); the lifting block (57) slides to drive the levers (56) to rotate; an unlocking spring (54) is provided between the pull rod (53) and the rotating ring (51) for sliding the pull rod (53) upward and thus rotating the pressure plate (52) to a position where it does not contact the hub.

4. The wheel hub processing equipment as described in claim 3, characterized in that: The lever (56) is rotatably connected to the clamp seat (30) in the middle; the pressure ring (55) is formed with a plurality of horizontally arranged slots (551) that are slidably connected to one end of the lever (56); the lower end of the lifting block (57) is formed with an opening slot (571) for driving the other end of the lever (56) to rotate.

5. The wheel hub processing equipment as described in claim 1, characterized in that: The upper end of the base (10) is rotatably connected to a vertically arranged central column (13) with a rotating shaft; each of the clamp seats (30) is evenly arranged on the outer periphery of the central column (13) and rotatably connected to the central column (13); one end of the clamp seat (30) facing the central column (13) is formed with a rotating column (301) rotatably connected to the central column (13); the outer wall of the rotating column (301) is formed with two symmetrically arranged recesses (302); the base (10) is provided with a stop ring (101) that can abut against the inner wall of the recess (302); the upper end of the stop ring (101) is formed with a groove (103) that cannot contact the recess (302); When the notch (302) is aligned with the groove (103), the clamp seat (30) can rotate around the rotating column (301); when the notch (302) is not aligned with the groove (103), the stop ring (101) restricts the rotation of the clamp seat (30).

6. The wheel hub processing equipment as described in claim 5, characterized in that: The outer wall of the rotating column (301) is formed with a coaxially arranged flip gear (303); the base (10) is provided with multiple segments of flip racks (102) arranged along the circumferential direction that can be connected to the flip gear (303) for transmission; when the flip gear (303) passes the flip rack (102), the flip gear (303) rotates half a turn; When the notch (302) and the groove (103) are aligned, the flip rack (102) and the flip gear (303) are connected in a transmission manner; when the notch (302) and the groove (103) are not aligned, the flip rack (102) and the flip gear (303) do not contact each other.

7. The wheel hub processing equipment as described in claim 5, characterized in that: The upper end of the longitudinal sliding disk (41) is longitudinally slidably connected with a plurality of plugs (42) arranged at equal intervals along the circumferential direction; a plug spring (43) is provided between the plug (42) and the longitudinal sliding disk (41) for sliding the plug (42) towards the hub; a friction wheel (11) capable of driving the hub to rotate is provided on the base (10).

8. The wheel hub processing equipment as described in claim 1, characterized in that: The positioning part (4) also includes a plurality of counterweights (47) that are slidably connected to the longitudinal transfer plate (41) and are respectively connected to the corresponding guide plate (46); the guide plate (46) has an inclined transmission groove (461) formed on the side near the counterweight (47); the counterweight (47) has a transmission column (471) that is slidably connected to the transmission groove (461); the counterweight (47) slides under the action of gravity.

9. The wheel hub processing equipment as described in claim 1, characterized in that: The base (10) is provided with a collection cylinder (104) for collecting milling fluid and chips located below each of the fixture seats (30).

10. The wheel hub processing equipment as described in claim 1, characterized in that: The positioning part (4) also includes a positioning motor (49) fixedly connected in the clamp seat (30) and driven by the lead screw (48); a motor gear (491) is fixedly connected on the output shaft of the positioning motor (49); and a lead screw gear (481) is fixedly connected to the lower end of the lead screw (48) and driven by the motor gear (491).

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