An automatic production line for brake disc machining

Abstract

The application relates to the technical field of automobile part machining, and particularly discloses an automatic production line for brake disc machining, which comprises a portal frame, a drilling mechanism, a workpiece adjusting mechanism, a three-axis moving platform, a hole wall polishing mechanism, a hole outer polishing mechanism and a controller. The drilling mechanism is arranged at the top of the front side of the portal frame. The hole wall polishing mechanism is arranged below the moving end of the three-axis moving platform on the left side. The hole outer polishing mechanism is arranged below the moving end of the three-axis moving platform on the right side. The automatic production line for brake disc machining realizes integrated machining of the drilling, inner wall polishing and outer wall polishing processes, has the non-stop self-adaptive hole diameter adjusting capacity, can change the polishing operation radius in real time under the continuous operation state of the equipment, is suitable for the inner wall polishing treatment of holes with various specifications and diameters, can flexibly change the polishing operation inclination and the machining direction, and can complete multi-angle fine polishing by matching the complex curved surface of the hole outer edge.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, specifically to an automated production line for brake disc processing. Background Technology

[0002] Automotive brake discs are mostly made of gray cast iron. After being cast, they first enter the CNC drilling process. The heat dissipation holes and mounting holes of the brake disc are precisely drilled according to the design points to ensure that the hole diameter, hole spacing and perpendicularity meet the assembly standards. After removing the burrs from the hole positions, multiple grinding operations are carried out. The inner and outer round end faces of the brake disc, the braking friction working surface, the edge corners of the disc surface and the drilled hole openings are finely ground and polished in sequence. This corrects the flatness and smoothness deviations caused by casting and machining, eliminates surface tool marks, burrs and sharp edges, so that the friction surface reaches the specified smoothness and dimensional accuracy. At the same time, it improves the appearance quality of the disc surface and the stability and smoothness of subsequent braking use, laying a qualified foundation for subsequent dynamic balancing tests, surface anti-corrosion treatment and vehicle assembly. Currently, in the drilling and grinding process of automotive brake discs, the processing equipment is single-function and adopts a separate processing mode. The drilling and grinding processes are completed on different processing equipment. The workpiece needs to be disassembled and transported multiple times. The processing process is cumbersome and has a low degree of automation integration. Conventional grinding methods cannot simultaneously achieve fine processing of the inner and outer walls of the drilled hole. The grinding adaptability is poor, and it is difficult to achieve adaptive grinding for different hole diameters. The proportion of manual adjustment is high, and the adjustment process often requires machine stoppage, which severely limits the continuity of work. In addition, the traditional grinding structure has low freedom of posture adjustment and a single grinding angle. It cannot meet the complex curved surface of the brake disc hole to complete multi-angle polishing operations. After processing, burrs, sharp edges and cutting marks are easily left on the hole opening, resulting in poor surface consistency of the finished product. Summary of the Invention

[0003] The purpose of this invention is to provide an automated production line for brake disc processing, so as to at least solve the problems mentioned in the background art above.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automated production line for brake disc processing, comprising: Gantry frame; The drilling mechanism is located on the top front side of the gantry frame; The workpiece adjustment mechanism is located on the inner side of the gantry frame; The three-axis moving platform has two components, which are respectively installed on the left and right sides of the front of the gantry frame. The hole wall grinding mechanism is located below the moving end of the three-axis moving platform on the left. The external grinding mechanism is located below the moving end of the three-axis moving platform on the right side; The controller is fixedly mounted on the top left front of the gantry frame via a bracket, and the three-axis moving platform and the controller are electrically connected.

[0005] Preferably, the workpiece adjustment mechanism includes: a driving component, which is disposed on the inner side below the gantry frame, and a workpiece fixing component is disposed above the driving component.

[0006] Preferably, the workpiece fixing component includes: a base, roller slide rails, a vertical frame, a transverse slide rail frame, a chain assembly, a fourth motor, a first path groove, a first slider, and a guide groove frame; the base is disposed on top of the driving component; there are two roller slide rails, which are respectively fixedly installed on the front and rear sides of the upper surface of the base by brackets, and the roller slide rails are U-shaped with an open top, and the left and right ends of the inner side of the roller slide rails are arc-shaped; the vertical frame is fixedly installed on the top of the base and is located on the outer front side of the front roller slide rail; the transverse slide rail frame is installed on the rear upper side of the vertical frame by brackets in the left and right direction; the chain assembly is rotatably mounted on the vertical frame in the left and right direction by a rotating shaft. The vertical frame is located on the rear side of its outer surface and on the front side of the horizontal slide rail frame. A fourth motor is mounted on the upper right side of the front surface of the vertical frame via a bracket. The rotating end of the fourth motor is fixedly connected to the right sprocket shaft of the chain assembly. The fourth motor and the controller are electrically connected. A first path groove is formed on the front surface of the horizontal slide rail frame, communicating with the inner cavity of the horizontal slide rail frame in the left-right direction. A first slider is inserted into the inner cavity of the horizontal slide rail frame. The front side of the first slider passes through the inner cavity of the first path groove and is connected to one side of the chain of the chain assembly. The rear end of the first slider extends out of the outer surface of the horizontal slide rail frame. A guide groove frame is mounted on the rear side of the outer surface of the first slider in the up-down direction.

[0007] Preferably, the workpiece fixing components further include: a mounting base plate, rollers, a mounting bracket, a connecting pin, a rotating platform, and an electric chuck; the mounting base plate is disposed above the outer surface of the front and rear roller slide rails; the number of rollers is two sets, with two rollers in each set, and the two sets of rollers are respectively rotatably mounted on the front and rear sides and left and right ends of the outer surface of the mounting base plate via a rotating shaft, and the two sets of rollers are respectively engaged with the inner sides of the front and rear roller slide rails; the mounting bracket is fixedly mounted on the front middle of the outer surface of the mounting base plate; the connecting pin is fixedly mounted on the top of the front surface of the mounting bracket, and the front side of the connecting pin is inserted into the inner cavity of the guide groove frame; the rotating platform is fixedly mounted on the top middle of the top of the outer surface of the mounting base plate, and the rotating platform is electrically connected to the controller; the electric chuck is fixedly mounted on the top of the rotating end of the rotating platform, and the electric chuck is electrically connected to the controller.

[0008] Preferably, the workpiece fixing component further includes: a fixed base, a rotating rod, a first electric telescopic rod, a support base, and a second electric telescopic rod; the fixed base is fixedly installed in the middle of the upper surface of the base; there are two rotating rods, one end of each rotating rod is rotatably installed below the left and right ends of the fixed base via a rotating shaft; there are two first electric telescopic rods, each rotatably installed above the left and right ends of the fixed base via a rotating shaft, and the first electric telescopic rods are electrically connected to the controller; there are two support bases, each rotatably installed outside the other end of the left and right rotating rods via a rotating shaft; there are two second electric telescopic rods, each rotatably installed below the left and right rotating rods via a rotating shaft seat, the telescopic ends of the two second electric telescopic rods are rotatably connected to the inner sides of the two support bases via a rotating shaft, and the second electric telescopic rods are electrically connected to the controller.

[0009] Preferably, the hole wall grinding mechanism includes: a mounting frame, a third electric telescopic rod, a third limiting component, and a mounting top plate; the mounting frame is fixedly installed at the bottom of the moving end of the left-side three-axis moving platform along the left-right direction; the third electric telescopic rod is fixedly installed on the left side of the outer surface of the mounting frame along the left-right direction, the telescopic end of the third electric telescopic rod extends into the inner side of the mounting frame, and the third electric telescopic rod is electrically connected to the controller; there are two third limiting components, which are respectively fixedly installed on the front and rear sides of the bottom of the outer surface of the third electric telescopic rod along the left-right direction; the mounting top plate is fixedly installed below the limiting ends of the front and rear third limiting components, and the top of the mounting top plate is connected to the telescopic end of the third electric telescopic rod.

[0010] Preferably, the hole wall grinding mechanism further includes: a groove seat, a rotary drum, a fifth motor, a ring gear set, a telescopic sleeve pair, a miniature electric telescopic rod, and the groove seat; the groove seat is fixedly installed on the lower surface of the mounting top plate; the rotary drum is rotatably installed inside the groove seat via bearings, and both sides of the rotary drum extend to the outside of the groove seat; the fifth motor is installed on the upper left side of the outer surface of the groove seat via a bracket, and the fifth motor is electrically connected to the controller; one side of the ring gear set is interference-fitted with the left side of the outer surface of the rotary drum, and the other side of the ring gear set... One side of the gear shaft is fixedly connected to the rotating end of the fifth motor; the telescopic sleeve is installed on the bottom left side of the outer surface of the slot seat via a bracket, and the right side of the telescopic sleeve extends into the inner cavity of the rotating disc; the miniature electric telescopic rod is fixedly installed on the left side of the outer surface of the telescopic sleeve, the telescopic end of the miniature electric telescopic rod passes through the telescopic sleeve and is fixedly connected to the telescopic end of the telescopic sleeve, and the miniature electric telescopic rod is electrically connected to the controller; the slot disc is installed on the right side of the telescopic end of the telescopic sleeve, and a limit groove is formed along the circumferential direction on the outer surface sidewall of the slot disc.

[0011] Preferably, the hole wall grinding mechanism further includes: a housing, a second path groove, a second slider, a rack, a mounting pin, a slide bar sleeve pair, a connecting piece, a spiral groove rod, a mounting hole, an inner spiral groove cylinder, a gear, a sixth motor, and an inner wall grinding rod; the housing is fixedly installed on the lower right side of the outer surface of the rotary disc in the front-back direction; the second path groove is formed on the front right side of the outer surface of the housing in the front-back direction, communicating with the inner cavity of the housing; the second slider is inserted into the inner cavity of the housing; the rack is screwed to the lower left side of the outer surface of the second slider in the front-back direction; the mounting pin is fixedly installed on the front right side of the outer surface of the second slider, and the right end of the mounting pin passes through the inner cavity of the second path groove; the number of slide bar sleeve pairs is two, and the fixed ends of the two slide bar sleeve pairs are respectively installed on the front and rear sides of the lower right side of the inner cavity of the rotary disc in the left-right direction; connecting The connecting piece is fixedly installed on the outside of the sliding limit ends of the two sliding rod sleeve pairs along the front-back direction. The top of the connecting piece is inserted into the limit groove cavity of the groove plate. The spiral groove rod is fixedly installed on the middle of the bottom right side of the outer surface of the connecting piece along the left-right direction. The mounting hole is opened at the middle of the bottom right side of the outer surface of the rotating disc, communicating with the inner cavity of the rotating disc. The inner spiral groove cylinder is rotatably installed in the inner cavity of the mounting hole through the bearing. The right side of the inner spiral groove cylinder extends to the bottom of the outer shell. The inner cavity of the inner spiral groove cylinder meshes with the outside of the spiral groove rod. The gear is interference-fitted on the outer right side of the inner spiral groove cylinder. The gear meshes with the rack. The sixth motor is fixedly installed on the right end of the mounting pin through the bracket. The sixth motor and the controller are electrically connected. The inner wall grinding rod is fixedly installed on the right side of the rotating end of the sixth motor along the left-right direction.

[0012] Preferably, the external grinding mechanism includes: a connecting frame, a first three-pronged bracket, a second three-pronged bracket, ball joint connectors, a fourth electric telescopic rod, a seventh motor, and an external wall grinding rod; the connecting frame is fixedly installed at the bottom of the moving end of the three-axis moving platform on the right side in the vertical direction, and the connecting frame is L-shaped; the first three-pronged bracket is fixedly installed on the left side of the outer surface of the connecting frame; the second three-pronged bracket is located on the left side of the outer surface of the first three-pronged bracket; the number of ball joint connectors is six sets, and the number of ball joint connectors in each set is two. The six sets of ball joint connectors are respectively installed on the inner side of the outer surface of the first three-pronged bracket and the second three-pronged bracket, and are positioned... Located on both sides of the outer top of the first and second three-pronged supports; the number of fourth electric telescopic rods is six, and the two ends of the six fourth electric telescopic rods are respectively inclined and rotatably connected to the outside of the rotating ends of the ball joint connectors on the left and right sides through a rotating shaft. Adjacent four electric telescopic rods are arranged in a figure-eight shape. The fourth electric telescopic rods are electrically connected to the controller; the seventh motor is fixedly installed on the middle right side of the outer surface of the second three-pronged support. The rotating end of the seventh motor passes through the second three-pronged support. The seventh motor is electrically connected to the controller; the outer wall grinding rod is fixedly installed on the left side of the rotating end of the seventh motor along the left-right direction.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. The fourth motor drives the chain assembly's internal chain, which in turn drives the first slider to perform horizontal reciprocating linear motion. The inner wall of the guide slot continuously pushes against the connecting pin, causing the connecting pin to slide relative to the inner cavity of the guide slot. With the cooperation of the mounting frame, the linear reciprocating motion of the first slider is converted into a fixed-axis swing motion of the mounting base plate around its hinge point. Relying on the stroke characteristics of the chain's cyclical movement within the chain assembly, the mounting base plate is driven to sequentially complete alternating left and right-side rotations. When the mounting base plate reaches its extreme rotation angle, the left and right sides... The first electric telescopic rod at the corresponding position extends or shortens to drive the rotating rod at the corresponding position to rotate upward or downward around the outer axis of the fixed seat to a specified tilt angle. The second electric telescopic rods at the corresponding positions on the left and right sides extend or shorten to drive the support seat at the corresponding position to rotate upward or downward around the outer axis of the rotating rod to a specified tilt angle. This causes the support seats at the corresponding positions on the left and right sides to fit against the mounting base plate, thereby achieving support for the corresponding mounting base plate and enabling the workpiece inside the electric chuck to face the inner station of the hole wall grinding mechanism or the hole external grinding mechanism.

[0014] 2. The sixth motor drives the inner wall grinding rod to rotate at high speed, thus achieving the grinding and polishing operation of the inner wall of the workpiece hole. The fifth motor drives the gear in the ring gear set to rotate, which in turn drives the rotating drum to rotate inside the slot seat. This causes the rotating drum to drive the outer shell, which in turn drives the second slider and mounting pin on its inner side to rotate. This, in turn, drives the sixth motor to drive the inner wall grinding rod to move circumferentially. The controller controls the extension and retraction stroke of the miniature electric telescopic rod according to the inner diameter of the hole, so that the extension and retraction end of the telescopic sleeve pair drives the slot plate to generate a directional axial linear displacement. The slot plate drives the connecting piece that is inserted into the limiting groove on its inner wall to move synchronously in a directional axial linear displacement. Under the limiting action of the sliding sleeve pair, the connecting piece drives the spiral groove rod to achieve synchronous axial feed motion. Due to the meshing of the inner spiral groove and the spiral groove rod, the linear displacement of the spiral groove rod is converted into the fixed-axis rotational motion of the gear driven by the inner spiral groove, and the meshing of the gear and rack... The transmission is transmitted to the second slider, which in turn drives the second slider to slide along the inner cavity of the outer shell. The second slider drives the mounting pin to make precise radial sliding within the built-in slide of the second path groove. This causes the mounting pin to drive the sixth motor to change the eccentricity of the inner wall grinding rod relative to the rotation center. In a working state without stopping the machine, the circumferential working radius of the inner wall grinding rod is changed in real time, so that the inner wall grinding rod keeps in circumferential contact with the inner wall of the drilled hole for grinding. The controller allocates and outputs the extension stroke and action sequence of the six fourth electric telescopic rods in real time according to the preset angle and direction required by the outer wall grinding rod. The six fourth electric telescopic rods are transformed into a compound posture motion of the second trident on the left side by multi-angle adaptive swing of the ball joint connecting parts on the left and right sides, so as to change the tilt angle and direction of the seventh motor and the outer wall grinding rod. This causes the seventh motor to drive the outer wall grinding rod to rotate at high speed, so as to polish the outer edge of the drilled hole of the workpiece.

[0015] In summary, this invention integrates drilling, inner wall grinding, and outer wall grinding into a single process, reducing the number of workpiece disassembly and transfer operations, shortening the processing flow, and possessing the ability to adaptively adjust the hole diameter without stopping the machine. It can change the grinding radius in real time while the equipment is running continuously, adapting to the inner wall polishing of various hole diameters, eliminating the processing interruption problem caused by the downtime adjustment of traditional equipment. At the same time, it has the ability to adjust the spatial posture of multiple degrees of freedom, which can flexibly change the grinding angle and processing orientation, conforming to the complex curved surface of the outer edge of the drilled hole to complete multi-angle fine grinding, effectively removing burrs, sharp edges, and processing marks at the hole opening, and improving the surface finish of the workpiece. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Exploded view of the drilling mechanism; Figure 3 for Figure 1 Exploded view of the workpiece adjustment mechanism; Figure 4 for Figure 3 Exploded view of the workpiece fixing components; Figure 5 for Figure 4 Enlarged view of point A; Figure 6 for Figure 1 Exploded view of the workpiece fixing components; Figure 7 for Figure 6 Enlarged view of point B; Figure 8 for Figure 1 Exploded view of the external grinding mechanism.

[0017] In the diagram: 1. Gantry frame; 2. Drilling mechanism; 21. First limit assembly; 22. First lead screw assembly; 23. First motor; 24. Drilling equipment; 3. Workpiece adjustment mechanism; 31. Base frame; 32. Second limit assembly; 33. Second lead screw assembly; 34. Second motor; 35. Tank housing; 36. Third limit assembly; 37. Third motor; 38. Third lead screw assembly; 39. Mounting base; 4. Workpiece fixing component; 41. Base. 42. Roller slide rail; 43. Vertical frame; 44. Horizontal slide rail frame; 45. Chain assembly; 46. Fourth motor; 47. First path groove; 48. First slider; 49. Guide groove frame; 410. Mounting base plate; 411. Roller; 412. Mounting bracket; 413. Connecting pin; 414. Rotating platform; 415. Electric chuck; 416. Fixed seat; 417. Rotating rod; 418. First electric telescopic rod; 419. Support seat; 420. The... 5. Three-axis moving platform; 6. Hole wall grinding mechanism; 61. Mounting frame; 62. Third electric telescopic rod; 63. Third limit assembly; 64. Mounting top plate; 65. Slot seat; 66. Rotary drum; 67. Fifth motor; 68. Ring gear set; 69. Telescopic sleeve pair; 610. Miniature electric telescopic rod; 611. Slot disc; 612. Outer shell; 613. Second path slot; 614. Second slider; 615. Rack; 6 16. Mounting pin; 617. Slide rod sleeve pair; 618. Connecting piece; 619. Spiral thread rod; 620. Mounting hole; 621. Inner spiral thread groove cylinder; 622. Gear; 623. Sixth motor; 624. Inner wall grinding rod; 7. Outer hole grinding mechanism; 71. Connecting frame; 72. First three-pronged bracket; 73. Second three-pronged bracket; 74. Ball joint connector; 75. Fourth electric telescopic rod; 76. Seventh motor; 77. Outer wall grinding rod; 8. Controller. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-8 This invention provides a technical solution: an automated production line for brake disc processing, comprising: a gantry frame 1, a drilling mechanism 2, a workpiece adjustment mechanism 3, a three-axis moving platform 5, a hole wall grinding mechanism 6, a hole external grinding mechanism 7, and a controller 8; the drilling mechanism 2 is located on the top front side of the gantry frame 1; the workpiece adjustment mechanism 3 is located on the inner side of the gantry frame 1; there are two three-axis moving platforms 5, which are respectively installed on the left and right ends of the front outer side of the gantry frame 1. The three-axis moving platforms 5 are industrial-grade precision linear module platforms, using a high-precision ball screw and linear guide transmission structure. The three-axis moving platforms are respectively set with X-axis lateral displacement, Y-axis longitudinal displacement, and Z-axis vertical displacement. The module drive is electrically... The machine adopts a closed-loop servo motor. The left three-axis moving platform 5 provides multi-dimensional spatial displacement adjustment for the hole wall grinding mechanism 6, and the right three-axis moving platform 5 provides the attitude movement reference for the hole external grinding mechanism 7. The hole wall grinding mechanism 6 is located below the moving end of the left three-axis moving platform 5; the hole external grinding mechanism 7 is located below the moving end of the right three-axis moving platform 5. The controller 8 is fixedly installed on the top left front of the gantry frame 1 by a bracket. The three-axis moving platform 5 and the controller 8 are electrically connected. The bracket of the controller 8 adopts a bent L-shaped anti-vibration bracket. The controller 8 is an industrial-grade PLC programmable logic controller, equipped with an industrial touch screen display, and has functions such as program storage, logic operation, pulse output, signal acquisition, and multi-device collaborative control.

[0020] As a preferred option, further, such as Figure 2As shown, the drilling mechanism 2 includes: a first limiting assembly 21, a first lead screw assembly 22, a first motor 23, and a drilling device 24; there are two first limiting assemblies 21, which are fixedly installed on the left and right sides of the top center of the front surface of the gantry frame 1 in the vertical direction. The first limiting assembly 21 adopts a linear square guide rail limiting structure, and each limiting assembly has a built-in single slider as a limiting end, which can form a double-sided vertical constraint on the drilling device 24, limiting the radial shaking and left and right offset generated during the drilling process, and ensuring the straightness of the vertical feed of the drilling device 24; the first lead screw assembly 22... The lead screw of component 22 is rotatably mounted on the outer surface of the gantry frame 1 via a bearing seat in the vertical direction, and is located inside the two first limit components 21 on the left and right. The first lead screw assembly 22 adopts a precision ball screw transmission structure. The upper and lower ends of the lead screw are fixed with high-precision bearing seats. The bearing seats have built-in double-row angular contact ball bearings to reduce the radial runout generated by the high-speed rotation of the lead screw and ensure the coaxiality of the screw rotation. The lead screw nut is equipped with a circulating ball structure to convert the rotational motion of the lead screw into the linear lifting motion of the nut. The first motor 23 is mounted on the top of the outer surface of the gantry frame 1 via a bracket and is located on the first lead screw assembly 22. Above the lead screw, the rotating end of the first motor 23 is fixedly connected to the lead screw shaft of the first lead screw assembly 22. The first motor 23 is electrically connected to the controller 8. The first motor 23 is fixedly mounted on the top of the outer surface of the gantry frame via a customized shock-absorbing bracket. The first motor 23 is a servo stepper motor. The motor output shaft is coaxially fixedly connected to the lead screw shaft of the first lead screw assembly 22 via a rigid coupling. The controller 8 outputs pulse signals to control forward and reverse rotation, speed, and start and stop actions, which can accurately determine the number of rotations and rotation angle of the lead screw of the first lead screw assembly 22. The drilling device 24 is installed on the left and right first limit positions. The front side of the limiting end of component 21 and the rear side of the outer surface of the drilling device 24 are connected to the lead screw nut of the first lead screw assembly 22. The drilling device 24 is electrically connected to the controller 8. The drilling device 24 is an industrial high-speed CNC drilling spindle machine. The spindle is equipped with high-precision bearings. The drilling device has an independent drive motor, a tool clamping chuck and a cooling spray assembly. The chuck can hold different specifications of carbide drill bits to meet the processing requirements of heat dissipation holes and mounting holes of different diameters. The spindle speed, drilling feed speed and drilling processing time of the drilling device 24 are controlled by the controller 8 to meet the drilling processing requirements of cast iron brake discs.

[0021] As a preferred option, further, such as Figure 3As shown, the workpiece adjustment mechanism 3 includes: a driving component, which is located on the lower inner side of the gantry frame 1, and a workpiece fixing component 4 is located above the driving component. The driving component includes: a base frame 31, a second limiting component 32, a second lead screw assembly 33, a second motor 34, a tank housing 35, a third limiting component 36, a third motor 37, a third lead screw assembly 38, and a mounting base 39; the base frame 31 is located on the lower inner side of the gantry frame 1 along the front-rear direction; there are three second limiting components 32, which are respectively positioned along the left and right sides. The second limiting components 32 are fixedly installed on the upper surface of the base frame 31 from front to back in a right-hand direction. The device has three sets of second limiting components 32, which are arranged at equal intervals from front to back and fixed to the upper surface of the base frame 31. The limiting direction is left-right lateral guidance. The second limiting components 32 use industrial precision linear guides. Each guide rail has two sets of high-precision sliding sliders as limiting ends. The sliders have an embedded ball bearing circulation structure, which can form multi-point balanced support constraints on the upper tank shell 35, limiting the vertical jump and forward / backward deviation of the tank shell 35. The second lead screw assembly 33 has a lead screw that is rotatably mounted on the upper surface of the base frame 31 via bearing seats in the left and right directions, and is located inside the two rear and front and rear second limit assemblies 32. The second lead screw assembly 33 adopts a high-precision cold-rolled ball screw, with precision rolling bearing seats at both ends of the screw. The lead screw nut adopts an integrated alloy wear-resistant nut, which can convert rotational motion into linear translational force, providing a precise transmission basis for the left and right lateral displacement of the tank shell 35; the second motor 34 passes through... The bracket is installed on the right side of the outer surface of the gantry frame 1, and is located on the right side outside the lead screw of the second lead screw assembly 33. The rotating end of the second motor 34 is fixedly connected to the lead screw shaft of the second lead screw assembly 33. The second motor 34 is electrically connected to the controller 8. The second motor 34 is assembled on the right side of the outer surface of the gantry frame 1 through a shock-absorbing fixing bracket. The motor output shaft and the lead screw shaft are coaxially fixedly connected by a rigid coupling. The second motor 34 is a three-phase hybrid stepper motor with an integrated high-precision encoder, which has pulse feedback and closed-loop error correction functions.The second motor 34 is controlled by pulse signals output from the controller 8 to control its forward and reverse rotation, start and stop, and rotation speed. It can precisely control the rotation angle and number of rotations of the lead screw in the second lead screw assembly 33. The tank housing 35 is fixedly installed on the top of the limiting ends of the three second limiting assemblies 32 along the front-back direction, and the bottom of the outer surface of the tank housing 35 is connected to the lead screw nut of the second lead screw assembly 33. There are two third limiting assemblies 36, which are fixedly installed on the left and right sides of the upper surface of the tank housing 35 respectively along the front-back direction. The limiting component 36 uses a miniature precision linear guide module. Each guide rail has two sets of high-precision sliding sliders built in as limiting ends, forming a double-sided limiting and guiding constraint on the upper mounting base 39, restricting the mounting base 39 from lateral offset, lateral tilt, and vertical jitter, retaining only the linear movement freedom in the forward and backward directions; the third motor 37 is mounted on the rear side of the outer surface of the tank shell 35 via a bracket. The rotating end of the third motor 37 extends into the interior of the workpiece fixing component 4. The second motor 34 and the controller 8 are electrically connected, and the third motor 37 is detachably fixed. The bracket is installed on the rear side of the outer surface of the tank housing 35. The third motor 37 is a small closed-loop servo motor. The motor output shaft is rigidly connected to the third lead screw assembly 38 via a flexible coupling. The third motor 37 receives speed adjustment, reversing, and positioning control commands from the controller 8, providing a controllable power source for adjusting the workpiece's forward and backward displacement. The lead screw of the third lead screw assembly 38 is rotatably mounted inside the tank housing 35 via bearings in the forward and backward direction. The rotating end of the third motor 37 is fixedly connected to the lead screw shaft of the third lead screw assembly 38. The lead screw of the three lead screw assembly 38 is rotatably mounted in the hollow cavity inside the outer shell 35 of the slot body via precision bearings along the longitudinal direction. The lead screw adopts a small precision trapezoidal transmission lead screw, and the two ends of the lead screw are rotated and limited by deep groove ball bearings. The upper end of the nut is rigidly fixed to the lower surface of the mounting base 39, which can convert the rotational motion of the lead screw into the linear feed motion of the mounting base 39. The mounting base 39 is fixedly installed on the top of the limiting ends of the two left and right third limiting assemblies 36, and the lead screw nut of the third lead screw assembly 38 is connected to the lower surface of the mounting base 39.

[0022] As a preferred option, further, such as Figure 4 and Figure 5As shown, the workpiece fixing component 4 includes: a base 41, roller slide rails 42, a vertical frame 43, a horizontal slide rail frame 44, a chain assembly 45, a fourth motor 46, a first path groove 47, a first slider 48, a guide groove frame 49, a mounting base plate 410, rollers 411, a mounting bracket 412, a connecting pin 413, a rotating platform 414, an electric chuck 415, a fixed seat 416, a rotating rod 417, a first electric telescopic rod 418, a support seat 419, and a second electric telescopic rod 420; the base 41 is fixedly installed on the upper surface of the mounting base 39; there are two roller slide rails 42, which are respectively fixedly installed on the front and rear sides of the upper surface of the base 41 by brackets. The roller slide rails 42 are U-shaped structures with an open top, and the rollers... The inner left and right ends of the slide rail 42 are arc-shaped. The roller slide rail 42 adopts an integrated U-shaped channel steel structure, and the inner left and right ends are processed into a smooth arc transition structure, which can reduce the frictional resistance during the sliding process of the roller, and at the same time play a lateral limiting and anti-disengagement role. It is suitable for the reciprocating sliding and flipping hinged movement of heavy-duty workpieces, and can provide a stable sliding track for the bottom roller 411, ensuring that the sliding and flipping process of the mounting base plate 410 is smooth and without jamming. The vertical frame 43 is fixedly installed on the top of the base 41 and is located on the outer front side of the front roller slide rail 42. The transverse slide rail 44 is installed on the upper rear side of the vertical frame 43 along the left and right direction through the bracket. The transverse slide rail 44 has a dovetail-shaped sliding inner cavity, and the inner wall of the inner cavity is finely ground smooth to reduce the sliding friction coefficient of the first slider 48. The transverse slide rail 44 is used to constrain the movement trajectory of the first slider 48, limiting the first slider 48 to horizontal linear displacement only in the left and right directions, providing a guiding basis for subsequent flipping actions; the chain assembly 45 is rotatably mounted on the rear side of the outer surface of the vertical frame 43 via a rotating shaft in the left and right directions, and is located on the front side of the outer side of the transverse slide rail 44. The chain assembly 45 adopts an industrial single-row roller chain and consists of two sets of rotating shafts, fixed bearing seats, driving sprockets, driven sprockets, and closed-loop chains, which can convert motor torque into chain horizontal circulating power; the fourth motor 46 is mounted on the upper right side of the outer surface of the vertical frame 43 via a bracket. The rotating end of the fourth motor 46 is fixedly connected to the right sprocket shaft of the chain assembly 45. The fourth motor 46 and the controller 8 Electrically connected, the fourth motor 46 is fixedly installed on the upper right side of the front of the vertical frame 43 by a shockproof metal bracket. The fourth motor 46 is a small closed-loop stepper motor. The output shaft is rigidly locked and coaxially fixed with the right drive sprocket of the chain assembly 45. The fourth motor 46 can receive pulse signals from the controller 8 to realize forward and reverse rotation, stepless speed regulation, and fixed-point start and stop, providing a controllable power source for the chain cycle motion of the chain assembly 45. The first path groove 47 is opened on the front side of the outer surface of the transverse slide frame 44 along the left and right direction and penetrates the inner cavity of the transverse slide frame 44. The groove body of the first path groove 47 is a long straight groove structure. The groove width is slightly larger than the thickness of the connecting end of the first slider 48. The groove wall is rounded and smooth. The first path groove 47 is used to constrain the exposed connecting end of the first slider 48.The first slider 48 is inserted into the inner cavity of the transverse slide rail 44. The front side of the first slider 48 passes through the inner cavity of the first path groove 47 and is connected to one side of the chain of the chain assembly 45. The rear end of the first slider 48 extends out of the outer side of the transverse slide rail 44. The guide rail 49 is installed on the rear side of the outer surface of the first slider 48 in the vertical direction. The guide rail 49 is made of thickened steel plate by cutting and bending. The groove has a vertical smooth guide groove. The guide rail 49 is used to cooperate with the connecting pin 413 to form a sliding motion pair. The groove wall constrains the movement trajectory of the pin shaft to realize the structural transformation from linear motion to swing motion. The mounting base 410 is set outside the front and rear roller slide rails 42. Above; there are two sets of rollers 411, with two rollers in each set. The two sets of rollers 411 are rotatably mounted on the front and rear sides and left and right ends of the outer surface of the mounting base plate 410 via a rotating shaft. The two sets of rollers 411 are respectively engaged with the inner sides of the front and rear roller slide rails 42. The rollers 411 adopt a composite load-bearing roller structure with an outer polyurethane coating and an internal bearing. The outer circle of the roller is adapted to the inner arc contour of the roller slide rail 42, and can roll in close contact with the inner wall of the U-shaped slide rail of the roller slide rail 42. The mounting bracket 412 is fixedly mounted on the front middle of the outer surface of the mounting base plate 410. The connecting pin 413 is fixedly mounted on the top of the front surface of the mounting bracket 412. The front side of the 3rd section is inserted into the inner cavity of the guide slot frame 49; the rotating platform 414 is fixedly installed on the top center of the outer surface of the mounting base plate 410, and the rotating platform 414 is electrically connected to the controller 8. The rotating platform 414 adopts an industrial high-precision electric rotary platform, which integrates a planetary geared motor and a precision bearing assembly. The rotating platform 414 can receive control commands from the controller 8 to achieve arbitrary angle indexing rotation and fixed-point self-locking, providing rotation indexing conditions for multi-station drilling of the brake disc; the electric chuck 415 is fixedly installed on the top of the rotating end of the rotating platform 414, and the electric chuck 415 is electrically connected to the controller 8. The electric chuck 415 is a four-jaw self-centering electric chuck, which is compatible with various conventional... The electric chuck 415, used in the automotive brake disc, employs a worm gear locking structure with continuously adjustable clamping force and a self-locking anti-loosening function. Controlled by the controller 8, the electric chuck 415 enables automated clamping and releasing, effectively preventing workpiece loosening or displacement during processing. A fixed base 416 is fixedly installed in the middle of the upper surface of the base 41. Two rotating rods 417 are present, each with one end rotatably mounted on the lower left and right sides of the fixed base 416 via a rotating shaft. These rotating rods serve as intermediate transmission support arms, connecting the fixed base 416 and the support base 419, transmitting the thrust of the first electric telescopic rod 418, and enabling angle support adjustment.There are two first electric telescopic rods 418, which are respectively mounted on the upper left and right ends of the inner side of the fixed base 416 via rotating shafts. The first electric telescopic rods 418 are electrically connected to the controller 8. The first electric telescopic rods 418 are DC industrial micro electric telescopic rods, controlled by the controller 8, and can push the rotating rod 417 to complete angular swinging. The first electric telescopic rods 418 are electrically connected to the controller 8 and have overload power-off protection function, ensuring precise and controllable action. There are also two support seats 419, which are respectively mounted on the outer side of the other end of the left and right rotating rods 417 via rotating shafts. The contact surface of the support seats 419 is machined into an arc-shaped fit structure and the surface is treated with anti-slip hardening. The support seats 419 can be adjusted... The rotating rod 417 swings synchronously to fit against the support mounting plate 410 when the workpiece is flipped to its limit angle, increasing the contact area and eliminating flipping sway and torque instability. Two second electric telescopic rods 420 are provided, each rotatably mounted below the outer side of the left and right rotating rods 417 via a rotating shaft. The telescopic ends of the two second electric telescopic rods 420 are rotatably connected to the inner side of the two support seats 419 via rotating shafts. The second electric telescopic rods 420 are electrically connected to the controller 8. The second electric telescopic rods 420 are high-thrust industrial electric push rods, featuring low-speed heavy-load and self-locking capabilities. The telescopic stroke of the second electric telescopic rods 420 is uniformly controlled by the controller 8, allowing for fine-tuning of the tilt angle of the support seats 419 and achieving a fine-tuning fit function.

[0023] As a preferred option, further, such as Figure 6 and Figure 7As shown, the hole wall grinding mechanism 6 includes: a mounting frame 61, a third electric telescopic rod 62, a third limiting component 63, a mounting top plate 64, a groove seat 65, a rotary disc 66, a fifth motor 67, a ring gear set 68, a telescopic sleeve pair 69, a miniature electric telescopic rod 610, a groove disc 611, a housing 612, a second path groove 613, a second slider 614, a rack 615, a mounting pin 616, a slider sleeve pair 617, a connecting piece 618, a spiral groove rod 619, a mounting hole 620, an inner spiral groove cylinder 621, a gear 622, a sixth motor 623, and an inner wall grinding rod 624; the mounting frame 61 is fixedly mounted on the left side along the left-right direction. The bottom of the moving end of the side three-axis moving platform 5; the third electric telescopic rod 62 is fixedly installed on the left side of the outer surface of the mounting frame 61 in the left-right direction, and the telescopic end of the third electric telescopic rod 62 extends into the inner side of the mounting frame 61. The third electric telescopic rod 62 is electrically connected to the controller 8. The third electric telescopic rod 62 is an industrial precision servo electric push rod with a high-precision displacement sensor inside. The third electric telescopic rod 62 is controlled by the controller 8 to provide lateral horizontal adjustment power for the lower structure; there are two third limit components 63, which are fixedly installed at the bottom front and rear of the outer surface of the third electric telescopic rod 62 in the left-right direction respectively. On both sides, the third limiting component 63 uses a miniature precision linear guide module. Each guide rail has two sets of high-precision sliding sliders built in as limiting ends, forming a limiting constraint on the mounting top plate 64, restricting the mounting top plate 64 from deflection, tilting, and forward and backward offset, retaining only the left and right horizontal movement freedom. The mounting top plate 64 is fixedly installed below the limiting ends of the two third limiting components 63, and the top of the mounting top plate 64 is connected to the telescopic end of the third electric telescopic rod 62. The tank seat 65 is fixedly installed on the lower surface of the mounting top plate 64. The rotating drum 66 is rotatably installed inside the tank seat 65 through bearings, and both the left and right sides of the rotating drum 66 extend to the outside of the tank seat 65. The rotary drum 66 is a hollow cylindrical structure. Both ends are rotatably embedded in the slot seat 65 through high-precision sealed bearings. The left and right ends extend outward to form external mounting end faces. Sufficient assembly space is reserved inside for arranging internal transmission components such as telescopic sleeve pair 69 and sliding rod sleeve pair 617. It can maintain stable circumferential rotation under external power drive. The fifth motor 67 is mounted on the upper left side of the outer surface of the slot seat 65 through a bracket. The fifth motor 67 is electrically connected to the controller 8. The fifth motor 67 is a small high-precision planetary gear servo motor. The controller 8 outputs pulse signals to control the start and stop, speed and angle, and provides stable input torque for the ring gear set 68.One side of the ring gear set 68 is interference-fitted to the left side of the outer surface of the rotary drum 66, and the other side of the ring gear set 68 is fixedly connected to the rotating end of the fifth motor 67. The ring gear set 68 is composed of a driving pinion and a large-diameter internal gear ring. The gear ring is fastened to the outer circle of the left end of the rotary drum 66 by interference fit. The driving gear is coaxially fixed with the output shaft of the fifth motor 67, which can evenly transmit the motor power to the rotary drum 66 to achieve low-speed, high-torque rotary motion. The telescopic sleeve pair 69 is installed on the bottom left side of the outer surface of the slot seat 65 by a bracket. The right side of the telescopic sleeve pair 69 extends into the inner cavity of the rotary drum 66. The telescopic sleeve pair 69 adopts a multi-stage nested structure. A precision sliding sleeve structure provides linear guiding constraint for the tank plate 611. A miniature electric telescopic rod 610 is fixedly installed on the left side of the outer surface of the telescopic sleeve pair 69. The telescopic end of the miniature electric telescopic rod 610 passes through the telescopic sleeve pair 69 and is fixedly connected to the telescopic end of the telescopic sleeve pair 69. The miniature electric telescopic rod 610 is electrically connected to the controller 8. The miniature electric telescopic rod 610 is a miniature precision DC electric push rod with a built-in precision Hall sensor. The miniature electric telescopic rod 610 is controlled by the controller 8 and can precisely control the axial feed displacement. The tank plate 611 is installed on the right side of the telescopic end of the telescopic sleeve pair 69. The outer surface sidewall of the tank plate 611 has circumferential openings. The limiting groove, the groove plate 611 can synchronously complete axial displacement with the telescopic sleeve pair 69, and its outer limiting groove is used to insert the constraint connecting piece 618 to realize synchronous transmission of axial power; the outer shell 612 is fixedly installed on the lower right side of the outer surface of the rotary drum plate 66 in the front-back direction, and the inner cavity of the outer shell 612 is reserved to accommodate and protect external transmission parts such as the second slider 614 and rack 615, and optimize the operating environment of the mechanism; the second path groove 613 is opened on the front right side of the outer surface of the outer shell 612 in the front-back direction and is connected to the inner cavity of the outer shell 612. The second path groove 613 is a long strip through groove with smooth rounded corners at the groove opening, and the groove width matches the outer diameter of the mounting pin 616; Two sliders 614 are inserted into the inner cavity of the outer shell 612. The second slider 614 is integrally formed from high wear-resistant nylon alloy material. The second slider 614 can slide in a direction along the trajectory of the cavity of the outer shell 612, serving as the load-bearing connection base for the rack, motor, and grinding rod, and transmitting mechanical transmission power. The rack 615 is screwed to the lower left side of the outer surface of the second slider 614 in the front-back direction. The rack 615 and the gear 622 form a vertical meshing relationship, which can convert the rotational motion of the gear 622 into the linear sliding motion of the second slider 614. The mounting pin 616 is fixedly installed on the front right side of the outer surface of the second slider 614, and the right end of the mounting pin 616 passes through the inner cavity of the second path groove 613.There are two sliding rod sleeve pairs 617. The fixed ends of the two sliding rod sleeve pairs 617 are respectively installed on the lower right side of the inner cavity of the rotary drum 66 in the left-right direction. The sliding rod sleeve pairs 617 adopt a chrome-plated optical shaft and a copper-based wear-resistant sleeve structure to provide horizontal guidance and constraint for the connecting piece 618, limit the shaking and offset of the connecting piece 618, and ensure the accuracy of linear transmission. The connecting piece 618 is fixedly installed on the outside of the sliding limit ends of the two sliding rod sleeve pairs 617 in the front-back direction. The top of the connecting piece 618 is fixedly installed on the outside of the sliding limit ends of the two sliding rod sleeve pairs 617 in the front-back direction. The spiral rod 619 is fixedly installed in the middle of the bottom right side of the outer surface of the connecting piece 618 along the left-right direction. The spiral rod 619 adopts a precision trapezoidal thread screw. The external thread of the spiral rod 619 precisely meshes with the internal thread of the inner spiral groove cylinder 621, which has the self-locking property of thread transmission and can smoothly convert linear displacement into rotational motion. The mounting hole 620 is opened in the middle of the bottom right side of the outer surface of the rotating drum 66, which is connected to the inner cavity of the rotating drum 66. The inner spiral groove... The inner spiral grooved cylinder 621 is rotatably mounted in the inner cavity of the mounting hole 620 via a bearing. The right side of the inner spiral grooved cylinder 621 extends to the lower part of the outer shell 612, and the inner cavity of the inner spiral grooved cylinder 621 meshes with the outer side of the spiral rod 619. The gear 622 is interference-fitted on the outer right side of the inner spiral grooved cylinder 621, and the gear 622 meshes with the rack 615. The sixth motor 623 is fixedly mounted on the right end of the mounting pin 616 via a bracket. The sixth motor 623 is electrically connected to the controller 8, and the sixth motor 623 is a high-speed motor. A miniature spindle motor, with its speed and start / stop regulated by controller 8, provides high-speed rotational power to the inner wall grinding rod 624. The inner wall grinding rod 624 is fixedly mounted on the right side of the rotating end of the sixth motor 623 along the left-right direction. The inner wall grinding rod 624 uses a carbide substrate with a diamond abrasive layer structure, suitable for deburring and polishing the walls of cast iron brake disc holes. It can rotate at high speed with the sixth motor 623 and simultaneously adjust its rotation radius in real time according to the eccentric adjustment mechanism, adapting to inner wall grinding operations for holes of different inner diameters.

[0024] As a preferred option, further, such as Figure 8As shown, the external grinding mechanism 7 includes: a connecting frame 71, a first three-pronged bracket 72, a second three-pronged bracket 73, ball joint connectors 74, a fourth electric telescopic rod 75, a seventh motor 76, and an external wall grinding rod 77. The connecting frame 71 is fixedly installed at the bottom of the moving end of the right-side three-axis moving platform 5 along the vertical direction, and the connecting frame 71 is L-shaped. The first three-pronged bracket 72 is fixedly installed on the left side of the outer surface of the connecting frame 71. The second three-pronged bracket 73 is located on the left side of the outside of the first three-pronged bracket 72. There are six sets of ball joint connectors 74, with two ball joint connectors in each set. The six sets of ball joint connectors 74 are respectively installed on the first three-pronged bracket 72 and the second three-pronged bracket 73. The ball joint connector 74 is located on the inner side of the outer surface of the fork 73, and on both sides of the outer top of the first tripod 72 and the second tripod 73. It uses precision industrial ball joint bearings, with a ball-spherical mating structure inside the hinge. The ball joint base is made of stainless steel, with a wear-resistant copper sleeve inlaid on the spherical surface. Six sets of ball joint connectors 74 are symmetrically arranged and installed at the inner connection points of the first tripod 72 and the second tripod 73. They are used to hinge and fix the two ends of the fourth electric telescopic rod 75, and can adaptively compensate for the angular deviation caused by the extension and retraction of the fourth electric telescopic rod 75, ensuring the multi-directional free swing capability of the parallel mechanism. There are six fourth electric telescopic rods 75. Both ends of the telescopic rod 75 are inclined and rotatably connected to the outside of the rotating ends of the ball joint connectors 74 on the left and right sides via a rotating shaft. Two adjacent fourth electric telescopic rods 75 are arranged in a V-shape. The fourth electric telescopic rod 75 is electrically connected to the controller 8. The fourth electric telescopic rod 75 is a synchronous control precision electric push rod with a built-in magnetostrictive displacement sensor. The controller 8 completes independent stroke control, speed adjustment and synchronous linkage calculation of the fourth electric telescopic rod 75, providing six degrees of freedom of attitude adjustment power for the second trident 73. The seventh motor 76 is fixedly installed on the middle right side of the outer surface of the second trident 73. The rotating end of the seventh motor 76 passes through the second trident. The frame 73, the seventh motor 76, and the controller 8 are electrically connected. The seventh motor 76 is fixedly installed in the middle right position of the second tripod 73 via a shockproof locking bracket. The seventh motor 76 is a high-speed precision grinding servo motor. The seventh motor 76 is controlled by the controller 8, which can realize stepless speed regulation, start-stop control, and overload protection, providing high-speed rotation power for the outer wall grinding rod 77. The outer wall grinding rod 77 is fixedly installed on the left side of the rotating end of the seventh motor 76 in the left-right direction. The outer wall grinding rod 77 uses an alloy steel solid rod body as the base, and is wrapped with a brown corundum frosted polishing layer to adapt to the polishing treatment of burrs, sharp edges, and outer chamfers of brake disc holes made of gray cast iron. The outer wall grinding rod 77 can follow the second tripod 73 to complete spatial pitch, yaw, roll, and translation composite attitude changes, and can conform to the irregular curved surface of the outer edge of the brake disc drill hole to complete multi-angle flexible grinding operations.

[0025] The specific work steps are as follows: Step 1: The worker places the car brake disc to be processed in the inner clamping position of the electric chuck 415. The operator starts the control controller 8. The controller 8 sends a control command to start the electric chuck 415. The internal self-adaptive clamping structure of the electric chuck 415 centers and clamps the brake disc workpiece. Step 2: After the workpiece is clamped, the controller 8 calls the internal preset automated processing program to control the second motor 34, the third motor 37, the first motor 23, the drilling equipment 24, and the rotating platform 414 to start in an orderly manner. The second motor 34 drives the internal screw of the second lead screw assembly 33 to rotate on a fixed axis, so that the screw nut of the second lead screw assembly 33 generates a lateral linear displacement with the screw rotation, thereby driving the outer shell of the groove 35 to move synchronously. The outer shell of the groove 35 moves horizontally left and right under the rigid limiting and guiding action of the three sets of second limit components 32. The third motor 37 drives the internal screw of the third lead screw assembly 38 to rotate, so that the screw nut of the third lead screw assembly 38 drives the mounting base 39 to adjust the displacement. The mounting base 39 completes the forward and backward translation under the constraint of the left and right sets of third limit components 36. Through the dual-axis coordinated cooperation of the second motor 34 and the third motor 37, the internal drive component of the workpiece adjustment mechanism 3, along with the component 4 and the fixed brake disc workpiece, completes the position adjustment of the forward and backward and left and right directions, and accurately transports the workpiece to the processing position directly below the drilling mechanism 2. Step 3: The first motor 23 drives the lead screw of the first lead screw assembly 22 to rotate, causing the lead screw nut of the first lead screw assembly 22 to drive the drilling equipment 24 to move vertically. Under the limiting guidance of the two sets of first limit assemblies 21 on the left and right, the drilling equipment 24 maintains a vertical lifting posture, so that the drill bit at the lower end of the drilling equipment 24 approaches and fits against the processing surface of the brake disc. The built-in drive motor of the drilling equipment 24 drives the drill bit to rotate at high speed and feed downward to perform mechanical drilling on the surface of the brake disc. During the drilling process, the rotating platform 414 is controlled to drive the electric chuck 415 at the upper end to rotate axially, changing the processing point of the brake disc, and thus completing the automated drilling operation of multiple preset holes on the disc surface in sequence. Step 4: After the brake disc drilling process is completed, the internal drive component of the workpiece adjustment mechanism 3 continues to drive the component 4 and the brake disc workpiece that is clamped and fixed to move the position, and transport the workpiece to the processing station of the hole wall grinding mechanism 6 or the hole external grinding mechanism 7 in sequence. When the workpiece arrives at the designated processing position, the controller 8 calls the preset control program and starts the fourth motor 46, the third motor 37, the first motor 23, the drilling equipment 24 and the rotating platform 414. Step 5: The fourth motor 46 outputs torque to drive the right sprocket of the chain assembly 45 to rotate clockwise or counterclockwise, so that the sprocket in the chain assembly 45 engages with the chain to achieve a closed-loop motion. The fixed end on the outer side of the chain drives the first slider 48 to perform horizontal reciprocating linear motion along the inner cavity of the transverse slide frame 44. During the horizontal displacement, the first slider 48 simultaneously drives the rear guide frame 49 to translate. The guide frame 49 continuously presses against the connecting pin 413 by the inner wall of the guide frame 49, so that the connecting pin 413 adapts within the guide frame 49. In relative sliding, since the rollers 411 mounted at the bottom of the mounting base plate 410 are engaged with the roller slide rails 42 on the front and rear sides, when the rollers 411 move to the end of the inner cavity of the roller slide rails 42, a physical hinge fulcrum is formed. With the structural cooperation of the mounting frame 412, the horizontal linear motion of the first slider 48 is converted into the fixed axis swing motion of the mounting base plate 410 around the hinge fulcrum. Relying on the cyclic reciprocating motion characteristics of the chain assembly 45, the mounting base plate 410 can be controllably driven to complete the bidirectional alternating flipping action of 90° on the left and 90° on the right. Step 6: When the mounting base plate 410 moves to the 90° limit flip angle, the controller 8 controls the first electric telescopic rod 418 at the corresponding positions on the left and right sides to extend or shorten, driving the rotating rod 417 to complete the angle rotation with the outer axis of the fixed seat 416 as the rotation base point. At the same time, the second electric telescopic rod 420 on the left and right sides extend and retract synchronously, driving the support seat 419 to perform adaptive angle adjustment around the axis of the rotating rod 417, so that the upper surface of the support seat 419 is tightly attached to the bottom surface of the mounting base plate 410, forming a rigid support for the flipped mounting base plate 410, eliminating the shaking and torque instability problems caused by the flip limit position, and making the brake disc workpiece held by the electric chuck 415 stably face the hole wall grinding mechanism 6 or the hole external grinding mechanism 7, providing a processing posture for subsequent grinding operations; Step 7: When it is necessary to grind the inner wall of the brake disc drill hole, the workpiece adjustment mechanism 3 drives the component 4 to move the brake disc workpiece to the grinding station of the hole wall grinding mechanism 6. The controller 8 starts the preset grinding program and controls the three-axis moving platform 5, the third electric telescopic rod 62, the sixth motor 623, the micro electric telescopic rod 610 and the fifth motor 67 to work together. The left three-axis moving platform 5 drives the hole wall grinding mechanism 6 to complete the spatial multi-directional displacement adjustment, so that the inner wall grinding rod 624 is inserted into the brake disc drill hole. Step 8: The third electric telescopic rod 62 drives the mounting plate 64 to move laterally through telescopic movement. The mounting plate 64 moves horizontally under the limiting constraints of the front and rear sets of third limiting components 63, and simultaneously drives the lower grinding structure and the inner wall grinding rod 624 to complete the left and right position fine adjustment to adapt to the grinding requirements of different drilling depths. After the sixth motor 623 is powered on, it drives the inner wall grinding rod 624 to rotate at high speed to grind, polish and deburr the inner wall of the drill hole. Step 9: The fifth motor 67 outputs power to drive the ring gear set 68 to mesh and transmit power, causing the rotary disc 66 to rotate inside the slot seat 65. The rotary disc 66 synchronously drives the lower outer shell 612 to rotate, causing the second slider 614 and mounting pin 616 inside the outer shell 612 to move along the revolution trajectory, so that the inner wall grinding rod 624 can grind around the inner wall of the drill hole in a circumferential manner. During the rotation of the rotary disc 66, the connecting piece 618 on the inner side of the slide rod sleeve pair 617 is synchronously driven to slide circumferentially along the limiting groove of the slot disc 611, ensuring that the transmission structure does not jam and the movement does not interfere when the whole machine is running continuously. Step 10: During the machining process, the controller 8 precisely controls the extension and retraction stroke of the miniature electric telescopic rod 610 based on the actual inner diameter of the brake disc drilled, driving the telescopic sleeve pair 69 to drive the grooved disc 611 to complete axial linear displacement. The grooved disc 611 drives the connecting piece 618 to move synchronously through the limit slot insertion fit. Under the limit guidance of the sliding rod sleeve pair 617, the connecting piece 618 pushes the spiral grooved rod 619 axially forward. The spiral grooved rod 619 and the inner spiral grooved cylinder 621 form a threaded meshing transmission, converting the linear feed motion into the rotational motion of the inner spiral grooved cylinder 621. The inner spiral grooved cylinder 621 drives the outer gear 622 to rotate synchronously. The gear 622 meshes with the rack 615 to drive the second slider 614 to slide along the inner cavity of the outer shell 612. The second slider 614 drives the mounting pin 616 to slide radially inside the second path groove 613. Finally, it drives the sixth motor 623 and the inner wall grinding rod 624 to change the eccentricity relative to the center of rotation. Thus, the grinding working radius can be adaptively adjusted in real time without stopping the machine or interrupting the processing. This ensures that the inner wall grinding rod 624 is always in close contact with the inner wall of the drilled hole, completing a high-precision, dead-angle-free inner wall grinding operation. Step 11: When it is necessary to polish the edge of the hole of the brake disc, the workpiece adjustment mechanism 3 moves the brake disc workpiece fixed on the upper end of the workpiece fixing part 4 to the processing position of the external grinding mechanism 7. The controller 8 starts the external wall grinding control program and controls the three-axis moving platform 5, the fourth electric telescopic rod 75 and the seventh motor 76 to start. The right three-axis moving platform 5 drives the external grinding mechanism 7 to perform three-axis spatial displacement, so that it is close to the brake disc workpiece as a whole, and aligns the external wall grinding rod 77 with the processing area of ​​the outer wall of the hole. Step 12: The controller 8 has a built-in motion calculation algorithm. Based on the preset grinding angle, processing trajectory and polishing posture, it calculates and allocates the extension length and action sequence of the six sets of fourth electric telescopic rods 75 in real time. The six fourth electric telescopic rods 75 perform differentiated extension and retraction linkage synchronously under the hinge constraint of the ball joint connectors 74 on both sides at the corresponding positions. With the help of the multi-angle adaptive swing of the ball joint connectors 74 on both sides, the linear extension and retraction motion of each fourth electric telescopic rod 75 is coupled into the three-dimensional translation and three-dimensional rotation of the second trident 73 on the left side in the spatial coordinate system. This changes the spatial tilt angle and processing orientation of the seventh motor 76 and the outer wall grinding rod 77. The seventh motor 76 drives the outer wall grinding rod 77 to rotate at high speed, and performs fine polishing and grinding on the outer edge of the brake disc drill hole, the burrs at the hole opening, and the transition rounded corners, removing the sharp edges and processing burrs at the hole opening.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automated production line for brake disc machining, characterized by, include: Gantry frame (1); Drilling mechanism (2) is located on the top front side of the gantry (1); The workpiece adjustment mechanism (3) is located inside the gantry (1); Three-axis moving platform (5), the number of three-axis moving platforms (5) is two, and the two three-axis moving platforms (5) are respectively installed on the left and right ends of the front surface of the gantry frame (1); The hole wall grinding mechanism (6) is located below the moving end of the three-axis moving platform (5) on the left side; The external grinding mechanism (7) is located below the moving end of the three-axis moving platform (5) on the right side; The controller (8) is fixedly installed on the top left front of the gantry (1) by a bracket, and the three-axis moving platform (5) and the controller (8) are electrically connected.

2. An automated production line for machining brake discs according to claim 1, characterized in that, The workpiece adjustment mechanism (3) includes: a driving component, which is located on the inner side of the gantry (1) and a workpiece fixing component (4) is located above the driving component.

3. An automated production line for machining brake discs according to claim 2, characterized in that, The workpiece fixing component (4) includes: A base (41) is disposed on top of the drive component; Roller slide rail (42), there are two roller slide rails (42), the two roller slide rails (42) are respectively fixedly installed on the front and rear sides of the upper surface of the base (41) by brackets. The roller slide rail (42) is a U-shaped structure with an open top, and the left and right ends of the inner side of the roller slide rail (42) are arc-shaped. The vertical frame (43) is fixedly installed on the top of the base (41) and located on the outer front side of the front roller slide rail (42); A transverse slide rail (44) is mounted on the upper rear side of the vertical frame (43) via a bracket in the left-right direction; The chain assembly (45) is rotatably mounted on the rear side of the outer surface of the vertical frame (43) via a pivot in the left-right direction, and is located on the front side of the outer side of the transverse slide frame (44); The fourth motor (46) is mounted on the upper right side of the outer surface of the vertical frame (43) via a bracket. The rotating end of the fourth motor (46) is fixedly connected to the right sprocket shaft of the chain assembly (45). The fourth motor (46) is electrically connected to the controller (8). The first path groove (47) is formed on the front side of the outer surface of the transverse slide frame (44) in a left-right direction, communicating with the inner cavity of the transverse slide frame (44). The first slider (48) is inserted into the inner cavity of the transverse slide frame (44). The front side of the first slider (48) passes through the inner cavity of the first path groove (47) and is connected to the chain side of the chain assembly (45). The rear end of the first slider (48) extends out of the outside of the transverse slide frame (44). The guide slot frame (49) is installed on the rear side of the outer surface of the first slider (48) in the vertical direction.

4. An automated production line for machining brake discs according to claim 3, characterized in that, The workpiece fixing component (4) also includes: The mounting base plate (410) is located above the outside of the front and rear roller slide rails (42); Rollers (411), the number of rollers (411) is two sets, the number of rollers (411) in each set is two, the two sets of rollers (411) are respectively mounted on the front and rear sides and left and right ends of the outer surface of the mounting base plate (410) by rotating shafts, and the two sets of rollers (411) are respectively engaged with the inner side of the front and rear roller slide rails (42); The mounting bracket (412) is fixedly installed on the middle of the front side of the outer surface of the mounting base plate (410); A connecting pin (413) is fixedly installed on the top front side of the outer surface of the mounting bracket (412), and the front side of the connecting pin (413) is inserted into the inner cavity of the guide slot bracket (49). A rotating platform (414) is fixedly installed on the top center of the outer surface of the mounting base plate (410), and the rotating platform (414) is electrically connected to the controller (8); An electric chuck (415) is fixedly installed on the top of the rotating end of the rotating platform (414), and the electric chuck (415) is electrically connected to the controller (8).

5. An automated production line for machining brake discs according to claim 4, characterized in that, The workpiece fixing component (4) also includes: A fixing seat (416) is fixedly installed on the middle of the upper surface of the base (41); Rotating rod (417), there are two rotating rods (417), one end of each of the two rotating rods (417) is rotatably installed on the lower left and right sides of the outer side of the fixed base (416) through a rotating shaft; The first electric telescopic rod (418) has two components. The two first electric telescopic rods (418) are respectively mounted on the upper left and right ends of the inner side of the fixed base (416) via a rotating shaft. The first electric telescopic rod (418) is electrically connected to the controller (8). Support base (419), there are two support bases (419), and the two support bases (419) are respectively rotatably installed on the outer side of the other end of the left and right rotating rods (417) via rotating shafts; The second electric telescopic rod (420) has two components. The two second electric telescopic rods (420) are rotatably installed on the outside of the two rotating rods (417) via rotating shaft seats. The telescopic ends of the two second electric telescopic rods (420) are rotatably connected to the inside of the two support seats (419) via rotating shafts. The second electric telescopic rods (420) are electrically connected to the controller (8).

6. An automated production line for machining brake discs according to claim 5, characterized in that, The hole wall grinding mechanism (6) includes: The mounting frame (61) is fixedly installed at the bottom of the moving end of the three-axis moving platform (5) on the left side in the left-right direction; The third electric telescopic rod (62) is fixedly installed on the left side of the outer surface of the mounting frame (61) in the left-right direction. The telescopic end of the third electric telescopic rod (62) extends into the inner side of the mounting frame (61). The third electric telescopic rod (62) is electrically connected to the controller (8). The third limiting component (63) has two components, and the two third limiting components (63) are respectively fixedly installed on the bottom front and rear sides of the outer surface of the third electric telescopic rod (62) in the left and right directions. The mounting plate (64) is fixedly installed below the limiting ends of the two front and rear third limiting components (63), and the top of the mounting plate (64) is connected to the telescopic end of the third electric telescopic rod (62).

7. An automated production line for brake disc processing according to claim 6, characterized in that, The hole wall grinding mechanism (6) also includes: The groove seat (65) is fixedly installed on the lower surface of the mounting top plate (64); The rotating drum (66) is rotatably mounted inside the tank seat (65) via bearings, and both the left and right sides of the rotating drum (66) extend to the outside of the tank seat (65). The fifth motor (67) is mounted on the upper left side of the outer surface of the slot seat (65) via a bracket, and the fifth motor (67) is electrically connected to the controller (8); The ring gear set (68) has one side gear ring interference fit on the left side of the outer surface of the rotary drum (66), and the other side gear shaft of the ring gear set (68) is fixedly connected to the rotating end of the fifth motor (67). The telescopic sleeve assembly (69) is mounted on the bottom left side of the outer surface of the groove seat (65) by a bracket, and the right side of the telescopic sleeve assembly (69) extends into the inner cavity of the rotary drum (66); A miniature electric telescopic rod (610) is fixedly installed on the left side of the outer surface of the telescopic sleeve pair (69). The telescopic end of the miniature electric telescopic rod (610) passes through the telescopic sleeve pair (69) and is fixedly connected to the telescopic end of the telescopic sleeve pair (69). The miniature electric telescopic rod (610) is electrically connected to the controller (8). The groove plate (611) is installed on the right side of the telescopic end of the telescopic sleeve pair (69), and the outer surface sidewall of the groove plate (611) has a limiting groove in the circumferential direction.

8. An automated production line for brake disc processing according to claim 7, characterized in that, The hole wall grinding mechanism (6) also includes: The outer casing (612) is fixedly installed on the lower right side of the outer surface of the rotary drum (66) in the front-back direction; The second path groove (613) is formed on the front right side of the outer surface of the outer shell (612) in a front-back direction, communicating with the inner cavity of the outer shell (612); The second slider (614) is inserted into the inner cavity of the outer casing (612); A rack (615) is screwed to the lower left side of the outer surface of the second slider (614) along the front-back direction; The mounting pin (616) is fixedly installed on the front right side of the outer surface of the second slider (614), and the right end of the mounting pin (616) passes through the inner cavity of the second path groove (613). The slide rod sleeve pair (617) has two components, and the fixed ends of the two slide rod sleeve pairs (617) are respectively installed on the front and rear sides of the lower right side of the inner cavity of the rotary drum (66) in the left and right direction. The connecting piece (618) is fixedly installed outside the sliding limit end of the front and rear sliding rod sleeve pairs (617) in the front and rear directions, and the top of the connecting piece (618) is inserted into the limit groove cavity of the groove plate (611). A spiral-patterned rod (619) is fixedly installed in the middle of the bottom right side of the outer surface of the connecting piece (618) in the left-right direction; The mounting hole (620) is provided at the middle of the bottom right side of the outer surface of the rotary drum (66) and communicates with the inner cavity of the rotary drum (66); The inner spiral grooved cylinder (621) is rotatably mounted in the inner cavity of the mounting hole (620) by means of a bearing. The right side of the inner spiral grooved cylinder (621) extends to the lower part of the outer shell (612). The inner cavity of the inner spiral grooved cylinder (621) meshes with the outer part of the spiral rod (619). Gear (622) is interference-fitted to the outer right side of the inner helical groove cylinder (621), and gear (622) meshes with rack (615); The sixth motor (623) is fixedly mounted on the right end of the mounting pin (616) by a bracket, and the sixth motor (623) is electrically connected to the controller (8); The inner wall grinding rod (624) is fixedly installed on the right side of the rotating end of the sixth motor (623) in the left-right direction.

9. An automated production line for brake disc processing according to claim 8, characterized in that, The external grinding mechanism (7) includes: The connecting frame (71) is fixedly installed at the bottom of the moving end of the three-axis moving platform (5) on the right side along the vertical direction. The connecting frame (71) is L-shaped. The first three-pronged bracket (72) is fixedly installed on the left side of the outer surface of the connecting bracket (71); The second tripod (73) is located on the outer left side of the first tripod (72); The ball joint connector (74) is in six groups, with two ball joint connectors in each group. The six groups of ball joint connectors (74) are respectively installed on the inner side of the outer surface of the first tripod (72) and the second tripod (73), and are located on both sides of the outer top of the first tripod (72) and the second tripod (73). The fourth electric telescopic rod (75) has six units. The two ends of the six fourth electric telescopic rods (75) are respectively inclined and rotatably connected to the outside of the rotating ends of the ball joint connectors (74) on the left and right sides through the rotating shaft. The two adjacent fourth electric telescopic rods (75) are arranged in a figure-eight shape. The fourth electric telescopic rods (75) are electrically connected to the controller (8). The seventh motor (76) is fixedly installed on the middle right side of the outer surface of the second trident (73). The rotating end of the seventh motor (76) passes through the second trident (73). The seventh motor (76) is electrically connected to the controller (8). The outer wall grinding rod (77) is fixedly installed on the left side of the rotating end of the seventh motor (76) in the left-right direction.

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