A hub round hole chamfering device

Abstract

The present application relates to a chamfering device for hub round holes, which comprises a frame, a mounting seat, a plurality of chamfering mechanisms, a support mechanism and a lifting mechanism. The support mechanism includes a support table, a plurality of cushion blocks arranged on the support table and a plurality of lateral limiting components. The cushion blocks are used to support the bottom of the hub. The lateral limiting components include corner cylinders arranged on the support table and swing arms arranged at the output ends of the corner cylinders. The swing arms are used to abut against the outer ring surface of the hub to complete the restriction of the hub in the radial direction. A plurality of linear drive components are used to drive the support table to move in the vertical direction. The present application has controllable feed stability, good feed smoothness, high chamfering treatment quality, and greatly improves the chamfering processing accuracy, and the chamfering accuracy error is reduced to ±0.5 mm.

Description

Technical Field

[0001] The present application relates to the technical field of machining, and in particular to a chamfering device for circular holes of a wheel hub. Background Art

[0002] At present, many wheel hub parts are provided with a lot of circular holes on the circumference, such as threaded connection holes for connecting tire bolts, through holes for reducing the weight of the wheel hub or enhancing the heat dissipation performance of the wheel hub, etc. These holes often have certain requirements for position accuracy. After these holes are processed through two machining processes of drilling and boring, a lot of burrs are often left. The existence of burrs not only causes certain difficulties in the assembly between parts, affects the assembly quality of bolt connections, but also is easy to cause harm to the operator. Therefore, chamfering processing is generally required for the burrs in the circular holes to ensure the stability of the wheel hub during operation and the aesthetics of the wheel hub.

[0003] With the gradual popularization of intelligent manufacturing unmanned workshops, many existing manufacturers use multi-axis robots to process the chamfers of wheel hubs, and then replace manual loading and unloading of wheel hubs, reducing labor costs and labor intensity. During the processing, the multi-axis robot is responsible for grasping and hovering the wheel hub at the designated processing position, and the chamfering cutter head rotates to chamfer the circular holes of the wheel hub in the hovering state. After the chamfering process is completed, the multi-axis robot transfers the wheel hub away.

[0004] However, with such a processing method, the machining accuracy of the chamfering is poor. Summary of the Invention

[0005] In order to solve the problem that existing manufacturers use multi-axis robots to be responsible for grasping and hovering the wheel hub at the designated processing position, and the chamfering cutter head rotates to chamfer the circular holes of the wheel hub in the hovering state, with poor chamfering machining accuracy, the present application provides a chamfering device for circular holes of a wheel hub.

[0006] In a first aspect, a chamfering device for circular holes of a wheel hub provided by the present application adopts the following technical solution:

[0007] A chamfering device for circular holes of a wheel hub includes:

[0008] A frame;

[0009] A mounting seat arranged on the frame;

[0010] A plurality of chamfering mechanisms arranged on the mounting seat for chamfering the circular holes of the wheel hub;

[0011] Support mechanism, the support mechanism includes a support table, a number of cushion blocks arranged on the support table, and a number of lateral limiting components. The support table is arranged above the frame. The number of cushion blocks are arranged around the mounting seat. The number of lateral limiting components are arranged in a circular array relative to the central axis of the mounting seat. The cushion blocks are used to support the bottom of the wheel hub. The lateral limiting component includes a corner cylinder arranged on the support table and a swing arm arranged at the output end of the corner cylinder. The swing arm is used to abut against the outer ring surface of the wheel hub to complete the restriction of the radial direction of the wheel hub;

[0012] Lifting mechanism, including a power component, a transmission component, and a number of linear drive components. The transmission component is connected between the power component and the number of linear drive components. The number of linear drive components are used to drive the support table to move along the vertical direction.

[0013] By adopting the above technical solution, many existing manufacturers use multi-axis robots to process the chamfer of the wheel hub. During the processing, the multi-axis robot is responsible for grasping the wheel hub and, with the help of the positioning mechanism, hovering the wheel hub at the designated processing position for chamfering processing, thereby completing the automatic loading operation of the wheel hub. The chamfer tool head rotates to chamfer the round hole of the wheel hub in the hovering state. During the chamfering process, the multi-axis robot needs to drive the wheel hub to move downward by a distance equal to the vertical height of the chamfer to achieve feed. Therefore, during the movement, the multi-axis robot will output a vertical downward extrusion force. After the chamfering process is completed, the multi-axis robot transfers the wheel hub away, replacing manual labor to complete the automatic loading and unloading of the wheel hub, reducing labor costs and labor intensity. However, the multi-axis robot holds the wheel hub and hovers it on the chamfering processing equipment for processing, and realizes feed through the output stroke of the multi-axis robot. The arm length of the multi-axis robot is 2 - 3 meters, and the activity range is at least about 2 meters. The controllability of the feed force is poor, and the feed accuracy is low. Moreover, during the processing, a certain vertical upward extrusion force will be generated between the chamfer tool and the wheel hub. This upward extrusion force interacts with the vertical downward extrusion force output by the multi-axis robot, and the wheel hub will generate slight up and down vibrations in the vertical direction. At the same time, it will also cause the cantilever of the multi-axis robot to generate high-frequency slight shaking. And because the arm length of the multi-axis robot is relatively long, the anti-vibration performance decreases, further exacerbating the amplitude of the high-frequency slight shaking, resulting in poor processing accuracy. The chamfering accuracy of the processing will have an error of 2 - 8 mm; and because the multi-axis robot is in a state of high-frequency slight shaking for a long time, the maintenance cycle is shortened, the maintenance cost increases. At the same time, the mechanical arm wears out rapidly in such a working environment, and the service life drops sharply. The cost of such multi-axis robots generally ranges from 400,000 to 890,000 yuan, and the cost of damage or replacement is relatively high.

[0014] During the actual use of this application, a multi-axis robot grabs the wheel hub and places the wheel hub on several pads, thereby replacing manual labor to complete the automatic loading operation of the wheel hub. The corner cylinder works to drive the swing arm to swing, and the outer end of the swing arm abuts against the outer side surface of the wheel hub, thereby completing the positioning of the wheel hub and the restriction in the radial direction. Several chamfering mechanisms work to chamfer the round holes of the wheel hub. At the same time, the lifting mechanism works, and the power component drives several linear drive components to work through the transmission component, driving the support table to gradually descend along the vertical direction. The wheel hub gradually descends under the action of its own gravity following the support table, realizing that several chamfering mechanisms gradually perform passive feed and chamfering cutting. After the chamfering is completed, the lifting mechanism drives the support table to rise back to the initial position, and several chamfering mechanisms are separated from the wheel hub. The corner cylinder works to drive the swing arm to swing in the reverse direction to release the restriction on the radial direction of the wheel hub. The multi-axis robot grabs the wheel hub and transfers it away, replacing manual labor to complete the unloading work of the wheel hub, reducing labor costs and labor intensity. Moreover, this application cooperates with the multi-axis robot. During the chamfering process, there is no need for the multi-axis robot to hover and support the wheel hub, and there is no need for the multi-axis robot to output force to complete the feed of several chamfering mechanisms. The multi-axis robot will not be affected by the force of the chamfering tool, so it will not generate high-frequency vibration. Compared with the prior art, the wear amount of the multi-axis robot is greatly reduced, the service life of the multi-axis robot is greatly extended, and the maintenance and production costs are greatly reduced.

[0015] This application supports the bottom of the wheel hub through several pads, and at the same time restricts the radial direction of the wheel hub through several side limiting components in the same support table, thereby completing the support and radial positioning of the wheel hub. By using several linear drive components to drive the support table to gradually descend a distance equal to the vertical height of the chamfer, the wheel hub gradually descends under the action of its own gravity following the support table, thereby realizing the purpose of gradually passive feeding of several chamfering mechanisms. The feeding force is always equal to the self-weight of the wheel hub. Compared with the external force input for feeding, the feeding stability of this application is controllable, the feeding smoothness is good, the cutting thickness of the chamfering tool is stable and uniform, the chamfering quality is high, and the chamfering cutting depth of this application is controlled by the power component, the transmission component and several linear drive components. Compared with a multi-axis robot with a longer arm length, the precision is extremely high, greatly improving the chamfering processing precision, and the chamfering precision error is reduced to ±0.5 mm.

[0016] Preferably, several pads are arranged in a circular array relative to the central axis of the mounting seat, and the upper surfaces of several pads are in the same horizontal plane.

[0017] By adopting the above technical solution, it can be ensured that after the wheel hub is placed on several pads, the lower end surface of the wheel hub is in the same horizontal plane, thereby ensuring that the orifice of each hole of the wheel hub is in the same plane, ensuring the processing consistency of the chamfer, and at the same time, ensuring that the displacement direction of the wheel hub descending under the action of its own weight is always in the axial direction, that is, the displacement direction is parallel to the central axis of each through hole, improving the chamfering precision.

[0018] Preferably, the side limiting assembly further includes a support base, the corner cylinder is disposed on the support base, the support table is provided with a plurality of first adjustment slots corresponding to the support base one by one, the support base can move along the first adjustment slot to approach or move away from the center of the mounting base, both sides of the first adjustment slot are provided with a plurality of first adjustment holes, the first adjustment holes on both sides are alternately arranged along the length direction of the first adjustment slot, both sides of the support base are respectively provided with first connection slots corresponding to the first adjustment holes, and a first locking bolt for locking the support base is connected between the first connection slot and the first adjustment hole.

[0019] By adopting the above technical solution, the side limiting assembly can move along the radial direction of the wheel hub, so as to be applicable to processing wheel hubs of different models, thereby enhancing the processing applicability of the present application, making the machine multi-functional, reducing production costs, and saving equipment placement space.

[0020] Preferably, a plurality of linear drive assemblies are arranged in an array and the plurality of linear drive assemblies are arranged around the mounting base, the linear drive assemblies are arranged on the top of the frame and the output ends of the linear drive assemblies are connected to the support table.

[0021] By adopting the above technical solution, the arrangement of a plurality of linear drive assemblies in an array can ensure that the tabletop of the support table is always in a horizontal state during the rising or falling process, so as to ensure that during the falling process of the wheel hub under the action of its own gravity, its displacement direction always remains in the vertical direction, improving the stability and accuracy of the chamfering process.

[0022] Preferably, the linear drive assembly includes a base, a worm gear, a screw rod and an axial limiting seat, the worm gear is rotatably arranged on the base and the worm gear cannot move along its axial direction, the screw rod is inserted through the worm gear and is screwed with the worm gear, the upper end of the screw rod is rotatably arranged on the axial limiting seat, the axial limiting seat is connected to the support table, the transmission assembly is in transmission connection with the worm gear, and the base is arranged on the frame.

[0023] Preferably, the transmission assembly includes a first transmission shaft, a plurality of second transmission shafts, a driven wheel, a plurality of worm gears and a plurality of steering transmission components. The driven wheel is fixed to the first transmission shaft, and the power component is in transmission connection with the driven wheel. The steering transmission component includes a connection seat and two meshing bevel gears. The connection seat is arranged on the frame, and the two bevel gears are rotatably arranged in the connection seat. The ends of the first transmission shaft and the second transmission shafts are respectively rotatably inserted into the connection seat and connected to one of the bevel gears. A worm gear is connected between two adjacent second transmission shafts. The worm gear is rotatably inserted through the base and meshes with the worm wheel for transmission. The power component includes a lifting motor and a driving wheel arranged at the output end of the lifting motor. The lifting motor is arranged on the frame, and the driving wheel meshes with the driven wheel.

[0024] By adopting the above technical solution, the lifting or lowering of the support platform is driven by the lifting motor, the driving wheel, the driven wheel, the first transmission shaft, the second transmission shafts, the bevel gears, the worm wheel, the worm gear and the screw rod. The transmission hysteresis is extremely small, and the driving accuracy is high. When the chamfering process is completed, due to the extremely small transmission hysteresis, when the chamfering process is completed, the lifting motor immediately switches from the forward rotation to the reverse rotation state, and the lifting mechanism can quickly drive the support platform and the hub to rise, so as to separate the chamfering tool and the hub in time and quickly, ensuring the chamfering processing accuracy.

[0025] Preferably, it further includes an adjusting mechanism. The adjusting mechanism includes a plurality of second adjusting grooves, a plurality of adjusting seats and a replaceable positioning disk. The second adjusting grooves are opened on the mounting seat and arranged along the radial direction of the mounting seat. The adjusting seats are movably arranged in the corresponding second adjusting grooves. A plurality of second adjusting holes are arranged on both sides of the second adjusting grooves. The second adjusting holes on both sides are alternately arranged along the length direction of the second adjusting grooves. Second connecting grooves corresponding to the second adjusting holes are respectively opened on both sides of the adjusting seats. A second locking bolt for locking the adjusting seats is connected between the second connecting grooves and the second adjusting holes. The replaceable positioning disk is detachably arranged at the center of the mounting seat. The end face of the adjusting seat close to the replaceable positioning disk abuts against the peripheral surface of the replaceable positioning disk. Each adjusting seat is provided with a set of chamfering mechanisms.

[0026] By adopting the above technical solution, the arrangement of the adjusting mechanism and the positioning disk enables the present application to be applicable to the processing of more models of hubs, achieving multiple functions with one machine, saving factory space, reducing production costs, and positioning the chamfering tool by the end face of the adjusting seat close to the replaceable positioning disk abutting against the peripheral surface of the replaceable positioning disk, with high positioning accuracy.

[0027] Preferably, a positioning assembly is provided at the center of the mounting seat, and the positioning assembly includes a positioning shaft, a guide cone and a buffer compression spring. The central axis of the positioning shaft, the central axis of the guide cone, the central axis of the replaceable positioning disk, and the central axis of the mounting seat are all on the same straight line. The lower end of the positioning shaft is detachably connected to the mounting seat, and the lower section of the positioning shaft is provided with a shoulder. The guide cone is movably sleeved on the upper section of the positioning shaft. The buffer compression spring is sleeved outside the positioning shaft and clamped between the shoulder and the guide cone. The top end of the positioning shaft is also connected to a limit member for preventing the guide cone from detaching from the positioning shaft.

[0028] By adopting the above technical solution, the positioning assembly can pre-position the wheel hub axially when placing the wheel hub, thereby improving the efficiency of placing the wheel hub. At the same time, the guide cone and the buffer spring can effectively alleviate the impact during the placement of the wheel hub, thereby avoiding damage to the equipment due to excessive impact.

[0029] Preferably, the chamfering mechanism includes a chamfering motor, a chamfering tool, and a connecting piece for connecting the output end of the chamfering motor and the handle of the chamfering tool, a bearing is arranged in the adjustment seat, the chamfering motor is arranged at the lower end of the adjustment seat and the output shaft of the chamfering motor is passed through the inner ring of the bearing.

[0030] Preferably, a rotation speed sensor for detecting the rotation speed of each chamfering tool is disposed on the outer side thereof, the rotation speed sensor is electrically connected to a controller, and the controller is electrically connected to an alarm for issuing an abnormal rotation speed alarm.

[0031] By adopting the above technical solution, the controller can adjust the rotation speed of each cutter head according to different processing requirements, and can sense at any time whether there is any abnormality in the rotation of the chamfering cutter head. If there is an abnormality, a message can be sent to the controller, and the alarm can be sounded to stop processing in time to investigate the cause of the abnormality and correct it in time to reduce the scrap rate.

[0032] In summary, this application includes the following beneficial technical effects:

[0033] In this application, the bottom of the wheel hub is supported by several cushion blocks, and at the same time, the radial direction of the wheel hub is restricted by several side limiting components in the same support platform, so as to complete the support and radial positioning of the wheel hub. By using several linear drive components to drive the support platform to gradually descend by a distance equal to the vertical height of the chamfer, the wheel hub gradually follows the support platform to descend under the action of its own gravity, and then the purpose of gradually driving the several chamfer mechanisms to feed passively is realized. The feed force is always equal to the self-weight of the wheel hub, and the feed is completed relative to the external force input. The feed stability of this application is controllable, the feed smoothness is good, the cutting thickness of the chamfer tool is stable and uniform, the chamfering quality is high, and the chamfer cutting depth of this application is controlled by the power component, the transmission component and several linear drive components. Compared with the multi-axis robot with a longer arm length, the accuracy is extremely high, greatly improving the chamfering processing accuracy, and the chamfering accuracy error is reduced to ±0.5 mm. Brief Description of the Drawings

[0034] Figure 1 is a perspective view of this application.

[0035] Figure 2 is this application Figure 1 is a partial enlarged view of area A in this application.

[0036] Figure 3 is a partial structural decomposition diagram of this application.

[0037] Figure 4 is a perspective view of the chamfer mechanism of this application

[0038] Figure 5 is a structural diagram of the top surface of the mounting seat of this application.

[0039] Figure 6 is a schematic diagram of the usage state after this application puts the wheel hub.

[0040] Description of the Reference Numerals:

[0041] 1. Frame;

[0042] 2. Mounting seat;

[0043] 3. Chamfer mechanism; 31. Chamfer motor; 32. Chamfer tool; 33. Connecting piece;

[0044] 4. Support mechanism; 41. Support platform; 42. First adjustment groove; 43. First adjustment hole; 44. First connection groove; 45. Cushion block; 46. Side limiting component; 461. Corner cylinder; 462. Swing arm; 463. Support seat;

[0045] 5. Lifting mechanism; 51. Power component; 511. Lifting motor; 512. Driving wheel; 52. Transmission component; 521. First transmission shaft; 522. Second transmission shaft; 523. Driven wheel; 524. Worm; 53. Steering transmission component; 531. Connecting seat; 532. Bevel gear; 54. Linear drive component; 541. Base; 542. Worm gear; 543. Screw; 544. Axial limit seat;

[0046] 6. Adjusting mechanism; 61. Second adjusting groove; 62. Adjusting seat; 63. Replaceable positioning disc; 64. Second adjusting hole; 65. Second connecting groove; 66. Second locking bolt;

[0047] 7. Positioning component; 71. Positioning shaft; 711. Axle shoulder; 72. Guide cone; 73. Buffer compression spring; 74. Limiting part;

[0048] 81. Rotation speed sensor; 82. Controller;

[0049] 9. Wheel hub. Specific implementation mode

[0050] The following will further elaborate on this application in conjunction with the attached Figures 1-6 description.

[0051] The embodiment of this application discloses a wheel hub round hole chamfering device.

[0052] Refer to Figures 1-6 , a wheel hub round hole chamfering device, comprising:

[0053] Frame 1;

[0054] Mounting seat 2, arranged on the frame 1;

[0055] A plurality of chamfering mechanisms 3, arranged on the mounting seat 2, used for chamfering the round holes of the wheel hub 9;

[0056] Refer to Figures 1-3, a support mechanism 4, the support mechanism 4 includes a support platform 41, a plurality of cushion blocks 45 arranged on the support platform 41, and a plurality of side limiting components 46. The support platform 41 is arranged above the frame 1. The plurality of cushion blocks 45 are arranged around the mounting base 2. The plurality of side limiting components 46 are arranged in a circular array relative to the central axis of the mounting base 2. The cushion blocks 45 are used to support the bottom of the hub 9. The side limiting component 46 includes a corner cylinder 461 arranged on the support platform 41 and a swing arm 462 arranged at the output end of the corner cylinder 461. The swing arm 462 is used to abut against the outer surface of the hub 9 to complete the restriction of the radial direction of the hub 9. Furthermore, the bottom of the hub 9 is supported. At the same time, the corner cylinder 461 works to drive the swing arm 462 to swing. The outer end of the swing arm 462 abuts against the outer side surface of the hub 9 to complete the positioning and radial direction restriction of the hub 9, thereby completing the support and radial positioning of the hub 9;

[0057] Refer to Figure 3 , a lifting mechanism 5, including a power component 51, a transmission component 52, and a plurality of linear drive components 54. The transmission component 52 is connected between the power component 51 and the plurality of linear drive components 54. The plurality of linear drive components 54 are used to drive the support platform 41 to move along the vertical direction; the plurality of linear drive components 54 drive the support platform 41 to gradually descend by a distance equal to the vertical height of the chamfer. Thus, the hub 9 gradually follows the support platform 41 to descend under the action of its own gravity, thereby realizing the purpose of gradually and passively feeding the plurality of chamfering mechanisms 3. The feeding force is always equal to the self-weight of the hub 9. Compared with the external force input for feeding, the feeding stability of the present application is controllable, the feeding smoothness is good, the cutting thickness of the chamfering tool 32 is stable and uniform, the chamfering treatment quality is high, and the chamfering cutting depth of the present application is controlled by the power component 51, the transmission component 52, and the plurality of linear drive components 54. Compared with a multi-axis robot with a longer arm length, the precision is extremely high, greatly improving the chamfering processing precision, and the chamfering precision error is reduced to ±0.5 mm.

[0058] Refer to Figure 1 , the plurality of cushion blocks 45 are arranged in a circular array relative to the central axis of the mounting base 2. The upper surfaces of the plurality of cushion blocks 45 are in the same horizontal plane. Furthermore, it can be ensured that after the hub 9 is placed on the plurality of cushion blocks 45, the lower end surface of the hub 9 is in the same horizontal plane, thereby ensuring that the orifice openings of the hub 9 are in the same plane, ensuring the processing consistency of the chamfer, and at the same time, ensuring that the displacement direction of the hub 9 descending under the action of its own weight is always in the axial direction, that is, the displacement direction is parallel to the central axis of each through hole, improving the chamfering precision.

[0059] Refer to Figure 2, the side limiting component 46 further includes a support base 463, the corner cylinder 461 is arranged on the support base 463, the support table 41 is provided with a plurality of first adjustment slots 42 corresponding to the support base 463 one by one, the support base 463 can move along the first adjustment slot 42 to approach or move away from the center of the mounting base 2, both sides of the first adjustment slot 42 are provided with a plurality of first adjustment holes 43, the first adjustment holes 43 on both sides are arranged at intervals along the length direction of the first adjustment slot 42, both sides of the support base 463 are respectively provided with first connection slots 44 corresponding to the first adjustment holes 43, and a first locking bolt for locking the support base 463 is connected between the first connection slot 44 and the first adjustment hole 43. The side limiting component 46 can move along the radial direction of the wheel hub 9. Furthermore, it is applicable to process wheel hubs 9 of different models, so as to enhance the processing applicability of the present application, make one machine multi-functional, reduce production costs, and save equipment placement space.

[0060] Refer to Figure 1 and Figure 3 , a plurality of linear drive components 54 are arranged in an array and a plurality of linear drive components 54 are arranged around the mounting base 2. The linear drive components 54 are arranged on the top of the frame 1 and the output ends of the linear drive components 54 are connected to the support table 41. Furthermore, it can be ensured that the tabletop of the support table 41 is always in a horizontal state during the rising or falling process, and further ensure that during the falling process of the wheel hub 9 under the action of its own gravity, its displacement direction always remains in the vertical direction, improving the stability and accuracy of the chamfering process; the linear drive component 54 includes a base 541, a worm gear 542, a screw rod 543 and an axial limiting seat 544. The worm gear 542 is rotatably arranged on the base 541 and the worm gear 542 cannot move along its axial direction. The screw rod 543 passes through the worm gear 542 and is screwed with the worm gear 542. The upper end of the screw rod 543 is rotatably arranged on the axial limiting seat 544. The axial limiting seat 544 is connected to the support table 41. The transmission component 52 is in transmission connection with the worm gear 542. The base 541 is arranged on the frame 1.

[0061] Refer to Figure 3, the transmission assembly 52 includes a first transmission shaft 521, a plurality of second transmission shafts 522, a driven wheel 523, a plurality of worm gears 524, and a plurality of steering transmission components 53. The driven wheel 523 is fixed to the first transmission shaft 521, and the power component is in transmission connection with the driven wheel 523. The steering transmission component 53 includes a connection seat 531 and two meshing bevel gears 532. The connection seat 531 is arranged on the frame 1, and the two bevel gears 532 are rotatably arranged in the connection seat 531. The ends of the first transmission shaft 521 and the second transmission shafts 522 are respectively rotatably inserted into the connection seat 531 and connected to one of the bevel gears 532. A worm gear 524 is connected between two adjacent second transmission shafts 522. The worm gear 524 is rotatably inserted through the base 541 and meshes with the worm wheel 542 for transmission; the power component 51 includes a lifting motor 511 and a driving wheel 512 arranged at the output end of the lifting motor 511. The lifting motor 511 is arranged on the frame 1, and the driving wheel 512 meshes with the driven wheel 523; Refer to Figure 3 , furthermore, through the lifting motor 511, the driving wheel 512, the driven wheel 523, the first transmission shaft 521, the second transmission shafts 522, the bevel gears 532, the worm wheel 542, the worm gear 524, and the screw rod 543, the lifting or lowering of the support platform 41 is driven, the transmission hysteresis is extremely small, and the driving accuracy is high. When the chamfering process is completed. Due to the extremely small transmission hysteresis, when the chamfering process is completed, the lifting motor 511 immediately switches from the forward rotation to the reverse rotation state, and the lifting mechanism 5 can quickly drive the support platform 41 and the hub 9 to rise, thereby timely and quickly completing the separation of the chamfering tool 32 and the hub 9, ensuring the chamfering processing accuracy.

[0062] Refer to Figure 2 and Figure 4, further comprising an adjusting mechanism 6, the adjusting mechanism includes a plurality of second adjusting grooves 61, a plurality of adjusting seats 62 and a replaceable positioning disk 63, the second adjusting grooves 61 are formed in the mounting seat 2 and arranged along the radial direction of the mounting seat 2, the adjusting seats 62 are movably arranged in the corresponding second adjusting grooves 61, a plurality of second adjusting holes 64 are arranged on both sides of the second adjusting grooves 61, the second adjusting holes 64 on both sides are alternately arranged along the length direction of the second adjusting grooves 61, second connecting grooves 65 corresponding to the second adjusting holes 64 are respectively formed on both sides of the adjusting seats 62, and a second locking bolt 66 for locking the adjusting seats 62 is connected between the second connecting grooves 65 and the second adjusting holes 64, the replaceable positioning disk 63 is detachably arranged at the center of the mounting seat 2, the end surface of the adjusting seat 62 close to the replaceable positioning disk 63 abuts against the peripheral surface of the replaceable positioning disk 63, and each adjusting seat 62 is provided with a set of chamfering mechanisms 3; furthermore, the present application is applicable to the processing of more models of wheels 9, with multiple functions in one machine, saving factory space, reducing production costs, and positioning the chamfering cutter 32 by the end surface of the adjusting seat 62 close to the replaceable positioning disk 63 abutting against the peripheral surface of the replaceable positioning disk 63, with high positioning accuracy.

[0063] Refer to Figure 2 , a positioning component 7 is arranged at the center of the mounting seat 2, the positioning component 7 includes a positioning shaft 71, a guiding cone 72 and a buffer compression spring 73, the central axes of the positioning shaft 71, the guiding cone 72, the replaceable positioning disk 63 and the mounting seat 2 are all on the same straight line, the lower end of the positioning shaft 71 is detachably connected to the mounting seat 2, a shoulder 711 is arranged on the lower section of the positioning shaft 71, the guiding cone 72 is movably sleeved on the upper section of the positioning shaft 71, the buffer compression spring 73 is sleeved outside the positioning shaft 71 and clamped between the shoulder 711 and the guiding cone 72, and a limiting member 74 for preventing the guiding cone 72 from separating from the positioning shaft 71 is further connected to the top end of the positioning shaft 71; when the wheel 9 is placed, the positioning component 7 can perform axial guiding pre-positioning on the wheel 9, improving the placing efficiency of the wheel 9. At the same time, the guiding cone 72 and the buffer compression spring 73 can effectively relieve the impact during the placing process of the wheel 9, avoiding damage to the equipment due to excessive impact.

[0064] Refer to Figure 4, the chamfering mechanism 3 includes a chamfering motor 31, a chamfering tool 32, and a connecting member 33 for connecting the output end of the chamfering motor 31 and the tool shank of the chamfering tool 32. A bearing is provided in the adjusting seat 62, and the chamfering motor 31 is arranged at the lower end of the adjusting seat 62, and the output shaft of the chamfering motor 31 passes through the inner ring of the bearing; A rotational speed sensor 81 for detecting the rotational speed of each chamfering tool 32 is arranged outside each chamfering tool 32. The rotational speed sensor 81 is electrically connected to a controller 82, and the controller 82 is electrically connected to an alarm for issuing an alarm of abnormal rotational speed. Therefore, the controller 82 can adjust the rotational speed of each tool head according to different processing requirements, and can sense at any time whether there is an abnormality in the rotation of the chamfering tool head. If there is an abnormality, a message can be sent to the controller 82, and the alarm will sound an alarm, stopping the processing in time to check the cause of the abnormality and correcting it in time, reducing the rejection rate.

[0065] The implementation principle of a hub circular hole chamfering device according to an embodiment of the present application is as follows: The multi-axis robot grabs the hub 9 and places the hub 9 on a number of cushion blocks 45, thereby replacing manual labor to complete the automatic feeding operation of the hub 9. The corner cylinder 461 operates to drive the swing arm 462 to swing. The outer end of the swing arm 462 abuts against the outer side surface of the hub 9, thereby completing the positioning and radial direction limitation of the hub 9. A number of chamfering mechanisms 3 operate to chamfer the circular holes of the hub 9. At the same time, the lifting mechanism 5 operates, and the power member 51 drives a number of linear drive components 54 to operate through the transmission component 52, driving the support table 41 to gradually descend along the vertical direction. The hub 9 follows the support table 41 to gradually descend under the action of its own gravity, realizing that a number of chamfering mechanisms 3 are gradually fed passively and chamfering cutting is performed. After the chamfering process is completed, the lifting mechanism 5 drives the support table 41 to rise back to the initial position, and a number of chamfering mechanisms 3 are separated from the hub 9. The corner cylinder 461 operates to drive the swing arm 462 to swing in the reverse direction to release the radial direction limitation on the hub 9. The multi-axis robot grabs the hub 9 and transfers it away, and so on.

[0066] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A wheel hub circular hole chamfering device, characterized in that: include: Rack (1); A mounting seat (2) arranged on the frame (1); A plurality of chamfering mechanisms (3) are arranged on the mounting seat (2) and are used to perform chamfering on the circular hole of the wheel hub (9); A support mechanism (4), the support mechanism (4) comprising a support platform (41), a plurality of cushion blocks (45) arranged on the support platform (41) and a plurality of lateral limit assemblies (46), the support platform (41) being arranged above the frame (1), the plurality of cushion blocks (45) being arranged around the mounting seat (2), the plurality of lateral limit assemblies (46) being arranged in a circular array relative to the central axis of the mounting seat (2), the cushion blocks (45) being used to support the bottom of the wheel hub (9), the lateral limit assemblies (46) comprising a rotation angle cylinder (461) arranged on the support platform (41) and a swing arm (462) arranged at the output end of the rotation angle cylinder (461), the swing arm (462) being used to abut against the outer ring surface of the wheel hub (9) to thereby complete the restriction of the radial direction of the wheel hub (9); A lifting mechanism (5), comprising a power member (51), a transmission assembly (52) and a plurality of linear drive assemblies (54), wherein the transmission assembly (52) is connected between the power member (51) and the plurality of linear drive assemblies (54), and the plurality of linear drive assemblies (54) are used to drive the support platform (41) to move along the vertical direction; The power member (51) drives the plurality of linear drive components (54) to work through the transmission component (52) to drive the support platform (41) to gradually descend along the vertical direction, and the wheel hub (9) gradually descends along with the support platform (41) under the action of its own gravity, so that the plurality of chamfering mechanisms (3) are gradually passively fed and chamfering cutting is performed; A positioning assembly (7) is arranged at the center of the mounting seat (2), and the positioning assembly (7) comprises a positioning shaft (71), a guide cone (72) and a buffer compression spring (73). The central axis of the positioning shaft (71), the central axis of the guide cone (72), the central axis of the replaceable positioning disk (63), and the central axis of the mounting seat (2) are all on the same straight line. The lower end of the positioning shaft (71) is detachably connected to the mounting seat (2). The lower section of the positioning shaft (71) is provided with a shaft shoulder (711). The guide cone (72) is movably sleeved on the upper section of the positioning shaft (71). The buffer compression spring (73) is sleeved outside the positioning shaft (71) and clamped between the shaft shoulder (711) and the guide cone (72). The top end of the positioning shaft (71) is also connected to a stopper (74) for preventing the guide cone (72) from detaching from the positioning shaft (71).

2. The wheel hub circular hole chamfering device according to claim 1, characterized in that: A plurality of cushion blocks (45) are arranged in a circular array relative to the central axis of the mounting seat (2), and the upper surfaces of the plurality of cushion blocks (45) are located in the same horizontal plane.

3. The wheel hub circular hole chamfering device according to claim 2, characterized in that: The lateral limiting assembly (46) further comprises a support seat (463), the angular cylinder (461) is arranged on the support seat (463), the support platform (41) is provided with a plurality of first adjustment slots (42) corresponding to the support seat (463), the support seat (463) can move along the first adjustment slots (42) to approach or move away from the center of the mounting seat (2), a plurality of first adjustment holes (43) are arranged on both sides of the first adjustment slot (42), the first adjustment holes (43) on both sides are arranged alternately along the length direction of the first adjustment slot (42), first connecting slots (44) corresponding to the first adjustment holes (43) are respectively arranged on both sides of the support seat (463), and a first locking bolt for locking the support seat (463) is connected between the first connecting slot (44) and the first adjustment hole (43).

4. The wheel hub circular hole chamfering device according to claim 3, characterized in that: A plurality of linear drive components (54) are arranged in an array and are arranged around the mounting seat (2); the linear drive components (54) are arranged on the top of the frame (1) and the output ends of the linear drive components (54) are connected to the support platform (41).

5. The wheel hub circular hole chamfering device according to claim 4, characterized in that: The linear drive assembly (54) comprises a base (541), a worm wheel (542), a screw (543) and an axial limit seat (544); the worm wheel (542) is rotatably arranged on the base (541) and the worm wheel (542) cannot move along its axial direction; the screw (543) is inserted into the worm wheel (542) and is threadedly connected to the worm wheel (542); the upper end of the screw (543) is rotatably arranged on the axial limit seat (544); the axial limit seat (544) is connected to the support platform (41); the transmission assembly (52) is transmission-connected to the worm wheel (542); and the base (541) is arranged on the frame (1).

6. The wheel hub circular hole chamfering device according to claim 5, characterized in that: The transmission assembly (52) comprises a first transmission shaft (521), a plurality of second transmission shafts (522), a driven wheel (523), a plurality of worm gears (524) and a plurality of steering transmission components (53); the driven wheel (523) is fixed to the first transmission shaft (521); the power member (51) is transmission-connected to the driven wheel (523); the steering transmission component (53) comprises a connecting seat (531) and two mutually meshing bevel gears (532); the connecting seat (531) is arranged on the frame (1); the two bevel gears (532) are rotatably arranged in the connecting seat (531); the first transmission shaft (521) The ends of the second transmission shaft (522) and the ends of the second transmission shaft (522) are respectively rotatably extended into the connecting seat (531) and connected to one of the bevel gears (532); a worm (524) is connected between two adjacent second transmission shafts (522); the worm (524) is rotatably arranged in the base (541) and meshes with the worm wheel (542) for transmission; the power member (51) comprises a lifting motor (511) and a driving wheel (512) arranged at the output end of the lifting motor (511); the lifting motor (511) is arranged on the frame (1); and the driving wheel (512) meshes with the driven wheel (523).

7. The wheel hub circular hole chamfering device according to any one of claims 1 to 6, characterized in that: The device also comprises an adjustment mechanism (6), wherein the adjustment mechanism (6) comprises a plurality of second adjustment grooves (61), a plurality of adjustment seats (62) and a replaceable positioning plate (63), wherein the second adjustment grooves (61) are opened in the mounting seat (2) and are arranged along the radial direction of the mounting seat (2), the adjustment seats (62) are movably arranged in the corresponding second adjustment grooves (61), and a plurality of second adjustment holes (64) are arranged on both sides of the second adjustment grooves (61), and the second adjustment holes (64) on both sides are arranged alternately along the length direction of the second adjustment grooves (61), and the adjustment seats (62) are arranged in a radial direction along the length direction of the second adjustment grooves (61). Second connecting grooves (65) corresponding to the second adjusting hole (64) are respectively provided on both sides of the joint seat (62); a second locking bolt (66) for locking the adjusting seat (62) is connected between the second connecting groove (65) and the second adjusting hole (64); the replaceable positioning plate (63) is detachably arranged at the center of the mounting seat (2); the end surface of the adjusting seat (62) close to the replaceable positioning plate (63) abuts against the peripheral surface of the replaceable positioning plate (63); and each adjusting seat (62) is provided with a set of chamfering mechanisms (3).

8. The wheel hub circular hole chamfering device according to claim 7, characterized in that: The chamfering mechanism (3) comprises a chamfering motor (31), a chamfering tool (32), and a connecting piece (33) for connecting the output end of the chamfering motor (31) and the handle of the chamfering tool (32); a bearing is arranged in the adjustment seat (62); the chamfering motor (31) is arranged at the lower end of the adjustment seat (62), and the output shaft of the chamfering motor (31) is passed through the inner ring of the bearing.

9. The wheel hub circular hole chamfering device according to claim 8, characterized in that: A rotation speed sensor (81) for detecting the rotation speed of each chamfering tool (32) is arranged on the outer side thereof; the rotation speed sensor (81) is electrically connected to a controller (82); and the controller (82) is electrically connected to an alarm for issuing an abnormal rotation speed alarm.

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