Brake pad flexible CNC drilling device

Abstract

A flexible CNC drilling device for brake pads includes a main frame with a storage mechanism on top for storing and supplying brake pads; a clamping platform for clamping the brake pads for drilling and unloading them after drilling; a dual-axis transfer robot for transferring the brake pads from the storage mechanism to the clamping platform; and a CNC drilling machine for drilling the brake pads. Applied to the automotive brake pad manufacturing industry, this device can improve drilling efficiency, reduce production costs, and improve product quality. Economically, this technology can promote the development of related industries and enhance the competitiveness and profitability of enterprises. Based on the flexible CNC drilling system, stamping robot, and high-speed testing equipment, two fully automated flexible production lines for brake pad steel backing components have been built in pilot plants, improving product quality stability and ensuring safe production operations.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts, more specifically, a flexible numerical control drilling device for brake pads. BACKGROUND

[0002] With the rapid development of the automobile industry and the intensification of market competition, more and more automobile manufacturers and parts suppliers have begun to focus on product research and innovation, which includes the manufacture of automobile brake pads. The existing production mode has been unable to meet the demand for market growth, and at the same time, as labor costs continue to rise, the added value profit is greatly compressed. In the current brake pad production mode, labor costs still account for a large part, and basically a backward production method of manual operation is adopted, the degree of automation is relatively low, and it cannot meet the new requirements brought by the development of the industry, such as how to realize flexible drilling of brake pads to meet the shape requirements of brake pads for different vehicle models; how to control the drilling depth and angle of brake pads through the control system to meet the requirements of brake pads under different vehicle models and different use conditions; how to monitor and control the state of the brake pad drilling process through multi-information fusion algorithm to ensure the drilling quality and safety. SUMMARY

[0003] To solve the above problems and overcome the shortcomings of the prior art, the present application provides a flexible numerical control drilling device for brake pads, which comprises a general machine frame, and a storage mechanism, a clamping platform, a double-shaft transfer manipulator and a numerical control drilling machine are installed on the upper part of the general machine frame.

[0004] The storage mechanism is used to store and provide brake pads;

[0005] The clamping platform is used to clamp the brake pads for drilling operation and unload the brake pads after the drilling operation is completed;

[0006] The double-shaft transfer manipulator is used to transfer the brake pads from the storage mechanism to the clamping platform;

[0007] The numerical control drilling machine is used to drill the brake pads.

[0008] Further, the storage mechanism comprises a slewing bearing mounting plate, a slewing bearing is rotatably connected to the upper part of the slewing bearing mounting plate, a turntable is fixedly installed on the upper part of the slewing bearing, a slewing stepper motor is installed on the lower part of the slewing bearing mounting plate, the output shaft of the slewing stepper motor penetrates through the slewing bearing mounting plate and extends above it, the upper end of the output shaft of the slewing stepper motor is connected with a driving gear, and the driving gear is engaged with the threads on the outer vertical surface of the slewing bearing;

[0009] A turntable zero reset detection plate is installed on the outer side of the turntable, and a zero reset sensor is installed at the corresponding position of the slewing bearing mounting plate;

[0010] The lower end of the slewing bearing mounting plate is provided with a slewing hydraulic cylinder, the piston rod of the slewing hydraulic cylinder penetrates through the slewing bearing mounting plate and extends above the slewing bearing mounting plate, the upper end of the piston rod of the slewing hydraulic cylinder is fixedly provided with a slewing cylinder head, and the rotating disc is provided with a through hole at a position corresponding to the slewing cylinder head;

[0011] The upper end of the slewing bearing mounting plate is provided with a hydraulic cylinder sensor mounting block near the slewing cylinder head, and the hydraulic cylinder sensor mounting block is fixedly provided with a first slewing proximity switch;

[0012] The lower end of the rotating disc is provided with a plurality of slewing screws at equal intervals, and the corresponding position of the slewing bearing mounting plate is provided with a second slewing proximity switch.

[0013] Further, the upper end of the rotating disc is provided with a plurality of material stacks in a ring array form, the material stack comprises two material stack frame bottom plates, the upper end of each of the two material stack frame bottom plates is fixedly provided with a material stack round column, and the upper end of each of the two material stack frame bottom plates is further fixedly provided with a material stack frame rib plate, and the other side of the material stack frame rib plate is fixedly connected with the material stack round column.

[0014] The material stack further comprises a material stack main bottom plate, the upper end of the material stack main bottom plate is fixedly provided with a material stack main baffle, and the upper end of the material stack main bottom plate is further fixedly provided with a material stack main rib plate, and the other side of the material stack main rib plate is fixedly connected with the material stack main baffle.

[0015] The rotating disc is further fixedly provided with a plurality of material cushion blocks, and the plurality of material cushion blocks are respectively located between the material stack frame bottom plate and the material stack main bottom plate.

[0016] Further, the upper end of the mainframe is fixedly provided with a water tank, and the double-shaft transfer manipulator is installed in the water tank.

[0017] The double-shaft transfer manipulator comprises two columns fixedly installed in the water tank, the upper end of each of the two columns is connected with a synchronous belt linear module, the side surface of the synchronous belt linear module is movably connected with a module connecting plate, the side surface of the module connecting plate is movably connected with a module main support, the lower end of the module main support is movably connected with an electromagnet support, and the electromagnet support is provided with a floating electromagnetic chuck.

[0018] Further, the floating electromagnetic chuck comprises a second guide rail fixedly installed in the inner portion of the lower end of the module main support, the electromagnet support is movably arranged on the second guide rail, the upper end of the second guide rail is fixedly provided with a fine adjustment assembly guide rail upper baffle, a cylindrical compression spring is arranged between the fine adjustment assembly guide rail upper baffle and the electromagnet support, one side of the electromagnet support is fixedly provided with a knuckle bearing seat, a conical coil spring is arranged in the knuckle bearing seat, the conical coil spring is connected with a knuckle bearing shaft, the lower end of the knuckle bearing shaft is fixedly connected with the electromagnet support, and the lower end of the electromagnet support is fixedly connected with an electromagnet.

[0019] Further, the clamping platform comprises a clamping workbench bottom plate fixedly installed at the upper end of the general rack, the upper part of the clamping workbench bottom plate is fixedly installed with two clamping workbench side plates parallel to each other, the upper end of the clamping workbench side plate is fixedly installed with a feeding guide rail installation plate, the feeding guide rail installation plate is fixedly installed with a feeding guide rail, the feeding guide rail is movably connected with a feeding slide, the feeding slide is fixedly installed with a parallel opening and closing cylinder, the rear end of the feeding guide rail installation plate is installed with a feeding cylinder fixing plate, the feeding cylinder fixing plate is fixedly installed with a feeding cylinder, and the piston rod of the feeding cylinder is fixedly connected with the feeding slide;

[0020] The upper end of the feeding slide is fixedly installed with a gas claw cylinder installation plate, the gas claw cylinder installation plate is provided with a trapezoidal groove track plate, the trapezoidal groove track plate is movably connected with an adjusting arm, the other end of the adjusting arm is fixedly connected with a gas claw cylinder, and the lower end of the piston rod of the gas claw cylinder is fixedly installed with a gas claw cylinder pressure head.

[0021] The left and right sides of the parallel opening and closing cylinder are respectively installed with a left clamping finger fixing plate and a right clamping finger fixing plate, the lower end of the left clamping finger fixing plate is fixedly installed with a left clamping finger, and the lower end of the right clamping finger fixing plate is fixedly installed with a right clamping finger.

[0022] The upper end of the two clamping workbench side plates is also fixedly installed with a workbench top plate, and the upper end of the workbench top plate is fixedly connected with a work support plate.

[0023] The workbench top plate is located at the front side end of the feeding guide rail.

[0024] The lower edges of the left clamping finger and the right clamping finger are on the same horizontal plane as the upper edge of the work support plate.

[0025] Further, the upper end of one side of the clamping workbench bottom plate is also fixedly installed with a pushing mechanism installation plate, the pushing mechanism installation plate is installed with a pushing cylinder seat, a pushing mechanism fixing seat and a pushing mechanism slide block seat from bottom to top on one side, the upper end of the pushing cylinder seat is hinged with a pushing cylinder, the piston rod of the pushing cylinder is fixedly connected with a pushing cylinder joint, the pushing cylinder joint is hinged with a second connecting rod, the upper end of the second connecting rod is hinged with a first connecting rod, the other end of the first connecting rod is hinged with a pushing rod, the lower part of the pushing rod is fixedly installed with a clamping guide rail, the upper end of the pushing mechanism slide block seat is fixedly installed with a clamping slide block, the clamping guide rail is slidably connected with the clamping slide block, and one end of the pushing mechanism fixing seat is hinged with the middle and lower part of the second connecting rod.

[0026] The other end of the pushing rod is fixedly connected with a pushing plate.

[0027] The lower edge of the pushing plate is on the same horizontal plane as the upper edge of the work support plate.

[0028] Further, the numerical control drilling machine is fixedly installed on the X-axis bottom plate at the upper portion of the main frame, two parallel seat circular guide rails are fixedly installed at the upper portion of the X-axis bottom plate, an X-axis sliding block is slidably installed at the upper portion of the seat circular guide rail, an X-axis sliding plate is fixedly installed at the upper portion of the X-axis sliding block, an X-axis motor mounting plate is installed at one end of the X-axis bottom plate, an X-axis motor is installed at the outer side of the X-axis motor mounting plate, the output shaft of the X-axis motor penetrates through the X-axis motor mounting plate and extends to the other side of the X-axis motor mounting plate, a plum blossom coupling is connected to the other end of the output shaft of the X-axis motor, an X-axis lead screw is connected to the other end of the plum blossom coupling, the X-axis lead screw is located above the central axis of the X-axis bottom plate, a nut seat is engagedly connected to the X-axis lead screw, and the upper end of the nut seat is fixedly connected to the lower end of the X-axis sliding plate; an X-axis zero reset sensor support is also fixedly installed on the X-axis bottom plate, and an X-axis proximity switch is installed at the upper portion of the X-axis zero reset sensor support.

[0029] Further, the numerical control drilling machine is fixedly installed on the X-axis bottom plate at the upper portion of the main frame, two parallel seat circular guide rails are fixedly installed at the upper portion of the X-axis bottom plate, an X-axis sliding block is slidably installed at the upper portion of the seat circular guide rail, an X-axis sliding plate is fixedly installed at the upper portion of the X-axis sliding block, an X-axis motor mounting plate is installed at one end of the X-axis bottom plate, an X-axis motor is installed at the outer side of the X-axis motor mounting plate, the output shaft of the X-axis motor penetrates through the X-axis motor mounting plate and extends to the other side of the X-axis motor mounting plate, a plum blossom coupling is connected to the other end of the output shaft of the X-axis motor, an X-axis lead screw is connected to the other end of the plum blossom coupling, the X-axis lead screw is located above the central axis of the X-axis bottom plate, a nut seat is engagedly connected to the X-axis lead screw, and the upper end of the nut seat is fixedly connected to the lower end of the X-axis sliding plate; an X-axis zero reset sensor support is also fixedly installed on the X-axis bottom plate, and an X-axis proximity switch is installed at the upper portion of the X-axis zero reset sensor support.

[0030] The upper end of the rotary drive is rotatably connected to a rotary table connecting disc, the upper end of the X-axis sliding plate is installed with a rotary drive zero reset sensor support, the rotary drive zero reset sensor support is fixedly installed with a rotary light point switch, and a rotary zero reset detection plate is installed at the corresponding position on the rotary table connecting disc.

[0031] The upper end of the rotary drive is rotatably connected to a rotary table connecting disc, the upper end of the X-axis sliding plate is installed with a rotary drive zero reset sensor support, the rotary drive zero reset sensor support is fixedly installed with a rotary light point switch, and a rotary zero reset detection plate is installed at the corresponding position on the rotary table connecting disc.

[0032] The upper portion of the power head clamping seat is installed with a drill sleeve feeding mechanism, the drill sleeve feeding mechanism comprises a drill sleeve sliding block, the upper portion of the drill sleeve sliding block is slidably connected with a drill sleeve guide rail, the upper portion of the drill sleeve guide rail is fixedly installed with a guide rail mounting plate, the upper portion of the power head clamping seat is fixedly installed with a drill sleeve cylinder, and one end of the output shaft of the drill sleeve cylinder is fixedly connected with the guide rail mounting plate.

[0033] The guide rail mounting plate is in L-shaped structure, the lower end of the overhanging end of the guide rail mounting plate is fixedly installed with a tool setting block, the tool setting block is installed with a magnet; the lower end of the overhanging end of the guide rail mounting plate is also installed with a drill bit detection sensor mounting plate, and the drill bit detection sensor mounting plate is installed with a drill bit proximity switch.

[0034] The X-axis sliding plate is further fixedly provided with an auxiliary clamping mechanism, the auxiliary clamping mechanism comprises a brake disc and a pneumatic butterfly brake, the pneumatic butterfly brake is fixedly installed on the X-axis sliding plate, the brake disc is fixedly installed at the lower end of the rotary table connecting disc and protrudes from the outer edge of the rotary table connecting disc, and the brake disc is located in the interior of the pneumatic butterfly brake.

[0035] The beneficial effects of the present application are

[0036] Applied to the production and manufacturing industry of automobile brake pads, it can improve drilling efficiency, reduce production cost and improve product quality. In terms of economy, this technology can promote the development of related industries and improve the competitiveness and profitability of enterprises. Based on the flexible numerical control drilling system, stamping robot and high-speed detection equipment, two brake pad steel back pieces are constructed in the pilot unit to improve product quality stability and ensure the safety of production operations. At the same time, it will greatly reduce personnel safety problems, greatly reduce safety accidents and personnel injuries.

[0037] The special drilling machine for brake pad steel back pieces has a spindle speed of 50-1500 r / min, a repeat positioning accuracy of ±0.05 mm, a feeding speed of 2-30 m / min, a division accuracy of ±0.001°, and a workpiece processing qualification rate of ≥99%;

[0038] Realize multi-specification mold-free drilling function, can adapt to more than 400 specifications of steel back piece automatic drilling processing, special machine has material bin and automatic feeding and discharging mechanism, and the machining process can realize full-process automation;

[0039] The advantages are as follows:

[0040] Flexibility: The project adopts a flexible design scheme, which can adapt to the drilling processing needs of steel back pieces of different specifications and shapes.

[0041] Cost advantage: Compared with traditional numerical control drilling machines, the flexible numerical control drilling equipment designed in this project has lower cost and certain price advantage. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 The figure is a structural schematic diagram of the present application;

[0043] Figure 2 The figure is a structural schematic diagram of the present application;

[0044] Figure 3 The figure is a structural schematic diagram of the present application;

[0045] Figure 4 The figure is a structural schematic diagram of the present application;

[0046] Figure 5 The figure is a structural schematic diagram of the present application;

[0047] Figure 6 Structure side view of the double-axis transfer robot of the present application;

[0048] Figure 7 Structure top view of the double-axis transfer robot of the present application;

[0049] Figure 8 Structure of the clamping platform of the present application;

[0050] Figure 9 Structure front view of the clamping platform of the present application;

[0051] Figure 10 Structure side view of the clamping platform of the present application;

[0052] Figure 11 Structure of the numerical control drilling machine of the present application;

[0053] Figure 12 Structure side view of the numerical control drilling machine of the present application;

[0054] Figure 13 Structure front view of the numerical control drilling machine of the present application;

[0055] Figure 14 Structure top view of the numerical control drilling machine of the present application;

[0056] Figure 15 Structure of the sink of the present application;

[0057] 1, storage mechanism, 2, double-axis transfer robot, 3, clamping platform, 4, numerical control drilling machine;

[0058] 101, machine tool foot, 102, general frame, 103, machine shell, 104, sink, 105, rotary hydraulic cylinder, 106, second rotary proximity switch, 107, hydraulic cylinder sensor mounting block, 108, first rotary proximity switch, 109, rotary screw, 110, rotary table zero reset detection plate, 111, zero reset sensor, 112, rotary support, 113, driving gear, 114, rotary stepper motor, 118, rotary support mounting plate, 119, rotary disc, 120, material stack rack bottom plate, 121, material stack rack rib plate, 122, material stack round column, 123, material cushion block, 124, material stack main baffle, 125, material stack main bottom plate, 126, material stack main rib plate, 127, drag chain groove, 128, slide, 129, water receiving tray, 131, rotary cylinder head;

[0059] 201, column adapter plate, 202, column, 203, synchronous belt linear module, 204, lifting motor, 205, up-down direction motor cover, 206, up-down direction module cover plate, 207, module connecting plate, 208, lower limit detection plate, 209, air blowing mounting plate, 210, separating assembly, 212, left-right direction drag chain support plate two, 214, up-down direction drag chain support one, 215, follow-up pulley, 218, synchronous belt pressing plate, 220, up-down direction drag chain support two, 221, first guide rail slider, 222, synchronous belt, 223, first guide rail, 224, module main support, 225, manipulator sensor, 226, conical coil spring, 227, manipulator proximity switch, 228, electromagnet, 229, module main support lower plate, 230, module fixing plate, 231, valve plate mounting plate, 232, 2-position assembly valve, 233, 4-position assembly valve, 234, second guide rail, 235, cylindrical compression spring, 236, second guide rail slider, 237, joint bearing shaft, 238, joint bearing seat, 240, joint bearing sensor, 241, fine adjustment assembly guide rail upper baffle, 242, stepping motor mounting plate, 243, lifting motor mounting plate, 244, lifting motor fixing nut, 245, lifting motor end synchronous pulley, 246, module main support upper plate, 247, electromagnet support, 248, left-right direction drag chain support plate one, 249, proximity switch seat, 250, manipulator double linkage air cylinder, 251, sensor air cylinder mounting plate;

[0060] 301, clamping workbench bottom plate, 302, clamping workbench rib plate, 303, clamping workbench side plate, 304, clamping proximity switch support, 305, clamping proximity switch, 306, left clamping finger fixed plate, 307, left clamping finger, 308, parallel opening and closing air cylinder, 309, adjusting arm clamping block, 310, fixed handle, 311, gas claw air cylinder, 312, gas claw air cylinder pressing head, 313, first positioning stopper, 314, pushing plate, 315, clamping slider, 316, push rod, 317, clamping guide rail, 318, pin shaft, 320, first connecting rod, 321, second connecting rod, 322, pushing air cylinder joint, 323, pushing air cylinder, 324, pushing air cylinder seat, 325, pushing mechanism fixed seat, 326, pushing mechanism mounting plate, 327, pushing mechanism slider seat, 328, clamping connecting plate, 329, feeding air cylinder, 330, feeding air cylinder fixed plate, 331, rod end joint bearing, 332, feeding sliding seat, 333, gas claw air cylinder mounting plate, 334, trapezoidal groove track plate, 335, adjusting arm, 336, positioning pushing plate, 337, double linkage air cylinder, 338, support nail, 339, work support plate, 340, workbench top plate, 341, second positioning stopper, 342, feeding guide rail, 343, feeding guide rail mounting plate, 344, right clamping finger fixed plate, 345, right clamping finger;

[0061] 401, X axis bottom plate, 402, X axis slider, 403, rotary drive return to zero sensor support, 404, rotary light point switch, 405, magnet, 406, tool setting block, 407, drill bit proximity switch, 408, drill detection sensor mounting plate, 409, guide rail mounting plate, 410, drill sleeve guide rail, 411, drill sleeve slider, 412, drill sleeve cylinder, 413, power head clamping block, 414, power head clamping seat, 415, numerical control power head, 416, X axis rotary stepper motor, 417, rotary reducer, 418, drag chain support, 419, rotary cylinder, 420, rotary drive connecting block, 422, X axis return to zero sensor, 423, screw bearing seat, 424, rotary return to zero detection plate, 425, circular guide rail with seat, 426, X axis motor mounting plate, 427, first rotary table connecting disc, 428, first rotary drive, 429, second rotary drive, 430, positioning sleeve, 431, fixed drill sleeve, 432, plum blossom coupling, 433, X axis screw bearing seat, 434, X axis screw, 436, pneumatic butterfly brake cylinder support, 437, pneumatic butterfly brake mounting frame, 438, pneumatic butterfly brake, 439, rotary drive key sleeve, 440, second screw nut, 441, second drill sleeve cylinder support, 442, second drill sleeve cylinder joint, 443, second X axis sliding plate, 444, first drill sleeve cylinder joint, 445, first drill sleeve cylinder support, 446, first X axis sliding plate, 447, nut seat, 448, first screw nut, 449, X axis return to zero sensor support. DETAILED DESCRIPTION

[0062] For the purpose, technical scheme and advantages of the implementation of the present application, the following will be combined with the drawings of the present application to make a further detailed description. Figure 1 FIGS Figure 15 The present application will be described in more detail.

[0063] The brake pad flexible numerical control drilling device provided by the application comprises a general frame 102, the upper portion of the general frame 102 is provided with a storage mechanism 1 for storing and providing brake pads, a clamping platform 3 for clamping brake pads to perform drilling work and unload the brake pads after the drilling work is completed, a double-shaft transfer manipulator 2 for transferring brake pads from the storage mechanism 1 to the clamping platform 3, and a numerical control drilling machine 4 for drilling brake pads, the storage mechanism 1 comprises a slewing bearing mounting plate 118, the upper portion of the slewing bearing mounting plate 118 is rotatably connected with a slewing bearing 112, the upper portion of the slewing bearing 112 is fixedly installed with a rotating disc 119, the lower portion of the slewing bearing mounting plate 118 is installed with a slewing step motor 114, the output shaft of the slewing step motor 114 penetrates through the slewing bearing mounting plate 118 and extends to the upper portion thereof, the upper end of the output shaft of the slewing step motor 114 is connected with a driving gear 113, the driving gear 113 is in threaded engagement with the outer vertical surface of the slewing bearing 112, the outer side of the rotating disc 119 is installed with a rotating disc zero reset detection plate 110, the corresponding position of the slewing bearing mounting plate 118 is installed with a zero reset sensor 111, the lower end of the slewing bearing mounting plate 118 is installed with a slewing hydraulic cylinder 105, the piston rod of the slewing hydraulic cylinder 105 penetrates through the slewing bearing mounting plate 118 and extends to the upper portion thereof, the upper end of the piston rod of the slewing hydraulic cylinder 105 is fixedly installed with a slewing cylinder head 131, the rotating disc 119 is provided with a through hole at the position corresponding to the slewing cylinder head 131, the upper portion of the slewing bearing mounting plate 118 is installed with a hydraulic cylinder sensor mounting block 107 at the position close to the slewing cylinder head 131, the first slewing proximity switch 108 is fixedly installed on the hydraulic cylinder sensor mounting block 107, the lower portion of the rotating disc 119 is installed with a plurality of slewing screws 109 at the same interval, the corresponding position of the slewing bearing mounting plate 118 is installed with a second slewing proximity switch 106, the upper portion of the rotating disc 119 is installed with a plurality of material stacks in the form of annular array, the material stack comprises two material stack frame bottom plates 120, the upper ends of the two material stack frame bottom plates 120 are fixedly installed with a material stack circular column 122, the upper ends of the two material stack frame bottom plates 120 are further fixedly installed with a material stack frame rib plate 121, the other side of the material stack frame rib plate 121 is fixedly connected with the material stack circular column 122, the material stack further comprises a material stack main bottom plate 125, the upper end of the material stack main bottom plate 125 is fixedly installed with a material stack main baffle 124, the upper end of the material stack main bottom plate 125 is further fixedly installed with a material stack main rib plate 126, the other side of the material stack main rib plate 126 is fixedly connected with the material stack main baffle 124, a plurality of material cushion blocks 123 are further fixedly installed on the rotating disc 119, the plurality of material cushion blocks 123 are respectively located between the material stack frame bottom plate 120 and the material stack main bottom plate 125, the upper portion of the general frame 102 is fixedly installed with a water tank 104, the double-shaft transfer manipulator 2 is installed inside the water tank 104.The double-shaft transfer robot 2 comprises two vertical columns 202 fixedly installed in the sink 104, the upper ends of the two vertical columns 202 are connected with a synchronous belt linear module 203, the side surface of the synchronous belt linear module 203 is movably connected with a module connecting plate 207, the side surface of the module connecting plate 207 is movably connected with a module main support 224, the lower end of the module main support 224 is movably connected with an electromagnet support 247, and the electromagnet support 247 is installed with a floating electromagnet chuck; the floating electromagnet chuck comprises a second guide rail 234 fixedly installed in the inner bottom of the module main support 224, the electromagnet support 247 is movably arranged on the second guide rail 234, the upper end of the second guide rail 234 is fixedly provided with a fine adjustment assembly guide rail upper baffle 241, and the cylindrical compression spring 235 is arranged between the fine adjustment assembly guide rail upper baffle 241 and the electromagnet support 247; one side of the electromagnet support 247 is fixedly installed with a knuckle bearing seat 238, the knuckle bearing seat 238 is internally provided with a conical coil spring 226, the conical coil spring 226 is connected with a knuckle bearing shaft 237, the lower end of the knuckle bearing shaft 237 is fixedly connected with the electromagnet support 247, and the lower end of the electromagnet support 247 is fixedly connected with an electromagnet 228; the clamping platform 3 comprises a clamping workbench bottom plate 301 fixedly installed on the upper end of the general machine frame 102, the upper part of the clamping workbench bottom plate 301 is fixedly installed with two mutually parallel clamping workbench side plates 303, the upper end of the clamping workbench side plate 303 is fixedly installed with a feeding guide rail mounting plate 343, the feeding guide rail mounting plate 343 is fixedly installed with a feeding guide rail, the feeding guide rail is movably connected with a feeding slide 332, the feeding slide 332 is fixedly installed with a parallel opening and closing air cylinder 308, the rear end of the feeding guide rail mounting plate 343 is installed with a feeding air cylinder fixing plate 330, the feeding air cylinder fixing plate 330 is fixedly installed with a feeding air cylinder 329, and the piston rod of the feeding air cylinder 329 is fixedly connected with the feeding slide 332; the upper end of the feeding slide 332 is fixedly installed with a gas claw air cylinder mounting plate 333, the gas claw air cylinder mounting plate 333 is provided with a trapezoidal groove track plate 334, the trapezoidal groove track plate 334 is movably connected with an adjusting arm 335, the other end of the adjusting arm 335 is fixedly connected with a gas claw air cylinder 311, and the lower end of the piston rod of the gas claw air cylinder 311 is fixedly installed with a gas claw air cylinder pressure head 312; the left and right sides of the parallel opening and closing air cylinder 308 are respectively installed with a left clamping finger fixing plate 306 and a right clamping finger fixing plate 344, the lower end of the left clamping finger fixing plate 306 is fixedly installed with a left clamping finger 307, and the lower end of the right clamping finger fixing plate 344 is fixedly installed with a right clamping finger 345; the upper end of the two clamping workbench side plates 303 is also fixedly installed with a workbench top plate 340, and the upper end of the workbench top plate 340 is fixedly connected with a work support plate 339; the workbench top plate 340 is located at the front side end of the feeding guide rail 342; the lower edges of the left clamping finger 307 and the right clamping finger 345 are on the same horizontal plane as the upper edge of the work support plate 339;The upper end of one side of the clamping workbench bottom plate 301 is also fixedly provided with a pushing mechanism mounting plate 326, one side of the pushing mechanism mounting plate 326 is sequentially provided from bottom to top with a pushing cylinder seat 324, a pushing mechanism fixing seat 325 and a pushing mechanism sliding block seat 327, the upper end of the pushing cylinder seat 324 is hingedly connected with a pushing cylinder 323, the piston rod of the pushing cylinder 323 is fixedly connected with a pushing cylinder joint 322, the pushing cylinder joint 322 is hingedly connected with a second connecting rod 321, the upper end of the second connecting rod 321 is hingedly connected with a first connecting rod 320, the other end of the first connecting rod 320 is hingedly connected with a pushing rod 316, the lower part of the pushing rod 316 is fixedly provided with a clamping guide rail 317, the upper end of the pushing mechanism sliding block seat 327 is fixedly provided with a clamping sliding block 315, the clamping guide rail 317 is slidably connected with the clamping sliding block 315, one end of the pushing mechanism fixing seat 325 is hingedly connected with the middle and lower part of the second connecting rod 321; the other end of the pushing rod 316 is fixedly connected with a pushing plate 314; the lower edge of the pushing plate 314 is on the same horizontal plane as the upper edge of the working support plate 339; the numerical control drilling machine 4 is fixedly installed on the X-axis bottom plate 401 at the upper part of the general machine frame 102, the upper part of the X-axis bottom plate 401 is fixedly provided with two parallel seat circular guide rails 425, the upper part of the seat circular guide rail 425 is slidably provided with an X-axis sliding block 402, the upper part of the X-axis sliding block 402 is fixedly provided with an X-axis sliding plate, one end of the X-axis bottom plate 401 is provided with an X-axis motor mounting plate 426, the outer side of the X-axis motor mounting plate 426 is provided with an X-axis motor, the output shaft of the X-axis motor penetrates through the X-axis motor mounting plate 426 and extends to the other side of the X-axis motor mounting plate 426, the other end of the output shaft of the X-axis motor is connected with a plum blossom coupling 432, the other end of the plum blossom coupling 432 is connected with an X-axis lead screw 434, the X-axis lead screw 434 is located above the central axis of the X-axis bottom plate 401, the X-axis lead screw 434 is meshingly connected with a nut seat 447, the upper end of the nut seat 447 is fixedly connected with the lower end of the X-axis sliding plate; the X-axis bottom plate 401 is also fixedly provided with an X-axis zero reset sensor support 449, the upper part of the X-axis zero reset sensor support 449 is provided with an X-axis proximity switch; the X-axis sliding plate is fixedly provided with a drilling machine, the drilling machine comprises a rotary drive, one end of the rotary drive is connected with a rotary drive connecting block 420, the other end of the rotary drive connecting block 420 is connected with a rotary reducer 417, the other end of the rotary reducer 417 is connected with an X-axis rotary stepper motor 416, the lower end of the rotary drive connecting block 420 is connected with a rotary cylinder 419; the upper end of the rotary drive is rotatably connected with a turntable connecting disc, the upper end of the X-axis sliding plate is provided with a rotary drive zero reset sensor support 403, the rotary drive zero reset sensor support 403 is fixedly provided with a rotary light point switch 404, the corresponding position on the turntable connecting disc is provided with a rotary zero reset detection plate 424;The upper part of the rotary table connecting disc is fixedly provided with a power head clamping seat 414, the upper end of the power head clamping seat 414 is fixedly provided with a power head clamping block 413, the rear end of the power head clamping seat 414 is fixedly provided with a numerical control power head 415, the inside of the power head clamping seat 414 is provided with a linear guide pair, the inside of the linear guide pair is provided with a feeding servo motor and a ball screw, the ball screw is provided with a drill bit, the feeding servo motor drives the drill bit to reciprocate on the linear guide pair through the ball screw; the upper part of the power head clamping seat 414 is provided with a drill sleeve feeding mechanism, the drill sleeve feeding mechanism comprises a drill sleeve sliding block 411, the upper part of the drill sleeve sliding block 411 is slidably connected with a drill sleeve guide rail 410, the upper part of the drill sleeve guide rail 410 is fixedly provided with a guide rail mounting plate 409, the upper part of the power head clamping seat 414 is fixedly provided with a drill sleeve air cylinder 412, one end of the output shaft of the drill sleeve air cylinder 412 is fixedly connected with the guide rail mounting plate 409; the guide rail mounting plate 409 is in the shape of L, the lower end of the overhanging end of the guide rail mounting plate 409 is fixedly provided with a tool setting block 406, the tool setting block 406 is provided with a magnet 405; the lower end of the overhanging end of the guide rail mounting plate 409 is also provided with a drill bit detection sensor mounting plate 408, the drill bit detection sensor mounting plate 408 is provided with a drill bit proximity switch 407; the X-axis sliding plate is also fixedly provided with an auxiliary clamping mechanism, the auxiliary clamping mechanism comprises a brake disc and a pneumatic butterfly brake 438, the pneumatic butterfly brake 438 is fixedly installed on the X-axis sliding plate, the brake disc is fixedly installed on the lower end of the rotary table connecting disc and protrudes out of the edge of the rotary table connecting disc, and the brake disc is located in the inside of the pneumatic butterfly brake 438.

[0064] The implementation of the present application is as follows

[0065] The flexible numerical control drilling system designed in the project is mainly applied to automatic drilling on the steel back side surface of automobile brake pads. The steel back is a fan-shaped carbon steel sheet, and two holes with a diameter of 2mm or 2.5mm need to be drilled on the fan-shaped arc surface of the steel back as mounting holes of friction limiting pieces. The drilling system body is composed of eight-station storage mechanisms 1, double-shaft transfer manipulators 2, numerical control drilling machines 4 and other auxiliary structures installed on the same rack, which together complete the automatic feeding of the storage library, the transfer of the steel back station and the automatic drilling function.

[0066] The brake pad flexible numerical control drilling device comprises a general rack 102, the upper part of the general rack 102 is provided with

[0067] The storage mechanism 1 is used for storing and providing brake pads.

[0068] The clamping platform 3 is used for clamping brake pads to perform drilling operations and unloading brake pads after the drilling operations are completed.

[0069] The double-shaft transfer manipulator 2 is used for transferring brake pads from the storage mechanism 1 to the clamping platform 3.

[0070] A numerical control drilling machine 4 is used for drilling brake pads.

[0071] The general frame 102 is a cuboid structure welded by metal pipes, the lower end of the general frame 102 is fixedly provided with a machine bed foot 101, a machine shell 103 is arranged on the four side surfaces of the general frame 102, which plays a role of protecting the internal structure, a water tank 104 is fixedly installed on one side of the upper portion of the general frame 102, a water receiving tray 129 is installed on the lower portion of the water tank 104, drilling cooling water is gathered in the water tank 104, and then flows into the water receiving tray 129 through the water holes on the water tank 104, and is then gathered and delivered into an external water bucket or other water storage device, so as to place pollution to the environment and enable water resource recycling, and the double-shaft transfer robot 2 and the clamping platform 3 are installed inside the water tank 104.

[0072] The position on the same side of the upper portion of the general frame 102 and the water tank 104 is the installation position of the numerical control drilling machine 4, and the other side of the general frame 102 is the installation position of the storage mechanism 1, and the front portion is further provided with a drag chain groove 127 for regularizing and accommodating cables.

[0073] The water tank 104 is further fixedly provided with a slide 128 inside, when the brake pad drilling is completed, the brake pad is unloaded from the clamping platform 3, falls on the slide 128 and is transferred to a collecting device along the slide 128.

[0074] The storage mechanism 1 comprises a slewing bearing mounting plate 118, the upper portion of the slewing bearing mounting plate 118 is rotatably connected with a slewing bearing 112, the upper portion of the slewing bearing 112 is fixedly installed with a turntable 119, the lower portion of the slewing bearing mounting plate 118 is installed with a slewing step motor 114, the output shaft of the slewing step motor 114 penetrates through the slewing bearing mounting plate 118 and extends above the slewing bearing mounting plate 118, the upper end of the output shaft of the slewing step motor 114 is connected with a driving gear 113, the driving gear 113 is in threaded engagement with the outer vertical surface of the slewing bearing 112; the driving gear 113 is driven to rotate by the slewing step motor 114, the slewing bearing 112 is driven to rotate through the threaded engagement, so that the turntable 119 is synchronously rotated, the material stack is moved to a predetermined position, at this time, the double-shaft transfer robot 2 can transfer the brake pad in the material stack to the clamping platform 3.

[0075] A turntable zero return detection plate 110 is installed on the outer side of the turntable 119, a zero return sensor 111 is installed at the corresponding position of the slewing bearing mounting plate 118, when the turntable zero return detection plate 110 is rotated to the position where the zero return sensor 111 is located, whether the turntable 119 is zeroed can be detected.

[0076] The lower end of the slewing bearing mounting plate 118 is provided with a slewing hydraulic cylinder 105, the piston rod of the slewing hydraulic cylinder 105 penetrates the slewing bearing mounting plate 118 and extends above it, the upper end of the piston rod of the slewing hydraulic cylinder 105 is fixedly provided with a slewing cylinder head 131, the rotating disc 119 is provided with a through hole at a position corresponding to the slewing cylinder head 131, and the through hole is located at the center of the stack, the slewing cylinder head 131 can extend above the rotating disc 119 through the through hole, when the slewing hydraulic cylinder 105 is elongated, the slewing cylinder head 131 pushes up the brake pad against the brake pad, so that the brake pad reaches a predetermined position in the vertical height, at this time, the double-shaft transfer manipulator 2 can transfer the brake pad in the stack to the clamping platform 3.

[0077] The slewing bearing mounting plate 118 is provided with a hydraulic cylinder sensor mounting block 107 near the slewing cylinder head 131, the first slewing proximity switch 108 is fixedly installed on the hydraulic cylinder sensor mounting block 107, which can monitor the position and height of the hydraulic cylinder;

[0078] The rotating disc 119 is provided with a plurality of slewing screws 109 at the lower part at the same interval, the second slewing proximity switch 106 is installed at the corresponding position of the slewing bearing mounting plate 118, through the opening and closing of the second slewing proximity switch 106, it can be monitored whether the rotation of the rotating disc 119 is in place, that is, whether the stack is rotated in place in the horizontal position, only when the stack is in place, the double-shaft transfer manipulator 2 will work, preventing the double-shaft transfer manipulator 2 from running to cause the failure to transfer materials, even causing mechanical failure, such as collision between the double-shaft transfer manipulator 2 and the stack.

[0079] The rotating disc 119 is provided with a plurality of stacks in a ring array form, in the embodiment, there are eight stacks, the stack comprises two stack frame bottom plates 120, the upper end of each of the two stack frame bottom plates 120 is fixedly provided with a stack circular column 122, the upper end of each of the two stack frame bottom plates 120 is also fixedly provided with a stack frame rib plate 121, the other side of the stack frame rib plate 121 is fixedly connected with the stack circular column 122, which strengthens the structural strength;

[0080] The stack further comprises a stack main bottom plate 125, the upper end of the stack main bottom plate 125 is fixedly provided with a stack main baffle 124, the upper end of the stack main bottom plate 125 is also fixedly provided with a stack main rib plate 126, the other side of the stack main rib plate 126 is fixedly connected with the stack main baffle 124;

[0081] The stack main baffle 124 and the two stack circular columns 122 cooperate to form a three-dimensional brake pad containing space, the brake pad is placed in the containing space in a stacked form, and the side of the containing space is open, when the rotating disc 119 rotates to a predetermined position, the open side faces the double-shaft transfer manipulator 2, which is more convenient, safe and fast for transferring materials.

[0082] The rotary table 119 is also fixedly provided with a plurality of material blocks 123, two material blocks 123 are arranged on each material stack, the material blocks 123 are located between the material stack frame bottom plate 120 and the material stack main bottom plate 125, and the material blocks 123 can lift the brake pad. When the brake pad is placed in the material stack, there will be a certain gap between the brake pad and the rotary table 119, which facilitates taking.

[0083] The double-shaft transfer manipulator 2 comprises two column adapter plates 201 fixedly installed in the water tank 104, the upper ends of the two column adapter plates 201 are provided with columns 202, the upper ends of the two columns 202 are connected with synchronous belt linear modules 203, the side surfaces of the synchronous belt linear modules 203 are movably connected with module connecting plates 207, and the module connecting plates 207 can move laterally by being driven by a motor.

[0084] The upper part of the module connecting plate 207 is provided with an up-down direction motor cover 205, the inside of the up-down direction motor cover 205 is provided with a lifting motor mounting plate 243, the lifting motor mounting plate 243 is provided with a lifting motor 204 through a lifting motor fixing nut 244, the side surface of the lifting motor 204 is movably connected with a module main support 224, the module main support 224 can move up and down by being driven by the lifting motor 204, the module main support 224 is a vertically arranged rectangular tubular structure, the front end of the module main support 224 is also provided with an up-down direction module cover plate 206, which can cover the internal structure, the upper end and the lower end of the module main support 224 are respectively provided with a module main support upper plate 246 and a module main support lower plate 229, the lower part of the module main support 224 is movably connected with an electromagnet support 247, and the electromagnet support 247 is provided with a floating electromagnetic suction disc, which can adsorb and transfer the brake pad through the floating electromagnetic suction disc.

[0085] The lower end of the template connecting plate is also provided with a lower limit detection plate 208 to prevent the module main support 224 from moving downward beyond the limit.

[0086] The output shaft of the lifting motor 204 is provided with a lifting motor end synchronous pulley 245, which drives the follow-up pulley 215 mounted on the up-down direction motor cover 205 to rotate. The side surface of the module connecting plate 207 is fixedly connected with a first guide rail sliding block 221, and the inner side of the module main support 224 is provided with a first guide rail 223. The first guide rail sliding block 221 is slidably connected with the first guide rail 223. The inner side of the first guide rail 223 is further provided with a synchronous belt 222. The first guide rail 223 is provided with a synchronous belt pressing plate 218 to press the synchronous belt 222 tightly against the first guide rail 223. The synchronous belt 222 is in contact with the follow-up pulley 215. The lifting motor 204 drives the follow-up pulley 215 to rotate. Through the friction force between the follow-up pulley 215 and the synchronous belt 222, the synchronous belt 222 moves up and down, so that the electromagnet support 247 moves up and down.

[0087] The upper end of the module main support 224 is fixedly provided with a left-right direction drag chain support plate two 212 and an up-down direction drag chain support one 214. The rear side of the synchronous belt linear module 203 is provided with a left-right direction drag chain support plate one 248 through the module mounting plate.

[0088] The side surface of the module main support 224 is further provided with a mechanical hand sensor 225, which can monitor the position of the module main support 224.

[0089] The lower part of one end of the synchronous belt linear module 203 is provided with a sensor cylinder mounting plate 251. The sensor cylinder mounting plate 251 is provided with a proximity switch seat 249, which can monitor the position of the module connecting plate 207 and the module main support 224. When the module connecting plate 207 and the module main support 224 move to the position, they are located directly above the material stack, and can accurately adsorb the brake pad. A blowing mounting plate 209 is also installed here, and the blowing mounting plate 209 is provided with a separating assembly 210 to prevent multiple brake pads from being adsorbed at one time.

[0090] The lower part of the synchronous belt linear module 203 is further provided with a mechanical hand double cylinder 250.

[0091] The floating electromagnetic chuck includes a second guide rail 234 fixedly installed at the lower end of the module main support 224. The electromagnet support 247 is movably arranged on the second guide rail 234 and can move up and down on the second guide rail 234. The upper end of the second guide rail 234 is fixedly provided with a fine adjustment assembly guide rail upper baffle 241 for limiting the electromagnet support 247. A cylindrical compression spring 235 is arranged between the fine adjustment assembly guide rail upper baffle 241 and the electromagnet support 247. The cylindrical compression spring 235 applies a certain elastic force to the electromagnet support 247, and the electromagnet support 247 can have a certain amount of up-down displacement space, realizing self-adaptive adjustment of the up-down position.

[0092] A spherical bearing seat 238 is fixedly installed on one side of the electromagnet support 247. A conical helical spring 226 is installed inside the spherical bearing seat 238. The conical helical spring 226 is connected to the spherical bearing shaft 237. The lower end of the spherical bearing shaft 237 is fixedly connected to the electromagnet support 247. The conical helical spring 226 allows the spherical bearing shaft 237 to have a certain amount of horizontal swing space, so as to realize adaptive adjustment in angle.

[0093] A joint bearing sensor 240 is installed on one side of the electromagnet support 247, which can detect the position and angle information of the electromagnet 228.

[0094] An electromagnet 228 is fixedly connected to the lower end of the electromagnet support 247, which can attract brake pads.

[0095] The column 202 is also equipped with a valve plate mounting plate 231, on which a 2-position manifold valve 232 and a 4-position manifold valve 233 are installed.

[0096] The clamping platform 3 includes a clamping workbench base plate 301 fixedly installed on the upper end of the main frame 102. Two parallel clamping workbench side plates 303 are fixedly installed on the upper part of the clamping workbench base plate 301 and reinforced by clamping workbench ribs 302. A feed guide rail mounting plate 343 is fixedly installed on the upper end of the clamping workbench side plates 303. A feed guide rail is fixedly installed on the feed guide rail mounting plate 343. A feed slide 332 is movably connected to the feed guide rail 342. A feed cylinder fixing plate 330 is installed at the rear end of the feed guide rail mounting plate 343. A feed cylinder 329 is fixedly installed on the feed cylinder fixing plate 330. The piston rod of the feed cylinder 329 is fixedly connected to the feed slide 332 through a rod end joint bearing 331. The extension and retraction of the feed cylinder 329 drives the feed slide 332 to move on the feed guide rail.

[0097] A parallel opening and closing cylinder 308 is fixedly installed on the feed slide 332. The two ends of the opening and closing flat cylinder are respectively connected to a left clamping finger fixing plate 306 and a right clamping finger fixing plate 344. A left clamping finger 307 is fixedly installed at the lower end of the left clamping finger fixing plate 306, and a right clamping finger 345 is fixedly installed at the lower end of the right clamping finger fixing plate 344. The left clamping finger 307 and the right clamping finger 345 are driven to move towards or away from each other by the opening and closing flat cylinder, thereby clamping the brake pad.

[0098] A pneumatic gripper cylinder mounting plate 333 is fixedly installed on the upper end of the feed slide 332. A trapezoidal groove track plate 334 is provided on the pneumatic gripper cylinder mounting plate 333. An adjusting arm 335 is movably connected to the trapezoidal groove track plate 334. The other end of the adjusting arm 335 is connected to the pneumatic gripper cylinder 311 through the adjusting arm clamping block 309. A pneumatic gripper cylinder pressure head 312 is fixedly installed on the lower end of the piston rod of the pneumatic gripper cylinder 311. The pneumatic gripper cylinder pressure head 312 is driven to move up and down by the pneumatic gripper cylinder 311, thereby pressing the brake pad.

[0099] The upper ends of the two clamping worktable side plates 303 are also fixedly installed with a worktable top plate 340. The upper end of the worktable top plate 340 is fixedly connected with a work support plate 339 for placing brake pads. The worktable top plate 340 is also provided with a first positioning block 313 and a second positioning block 341 for positioning the position of the brake pads.

[0100] The lower edges of the left clamping finger 307 and the right clamping finger 345 are on the same horizontal plane as the upper edge of the working support plate 339, ensuring that the brake pads can be clamped.

[0101] Clamping proximity switches 305 are installed on the side plate 303 of the clamping workbench near the left finger fixing plate 306 and the right finger fixing plate 344, respectively, which can detect the position of the left finger fixing plate 306 and the right finger fixing plate 344 and whether they are open or closed.

[0102] The upper part of the adjusting arm 335 is provided with a fixed handle 310. By rotating the fixed handle 310, the relative position of the adjusting arm 335 and the trapezoidal groove track plate 334 can be fixed.

[0103] A pusher mechanism mounting plate 326 is fixedly installed on the upper end of one side of the clamping workbench base plate 301, and the structural strength is reinforced by a clamping connecting plate 328. From bottom to top, a pusher cylinder seat 324, a pusher mechanism fixing seat 325, and a pusher mechanism slider seat 327 are sequentially installed on one side of the pusher mechanism mounting plate 326. A pusher cylinder 323 is hinged to the upper end of the pusher cylinder seat 324. The piston rod of the pusher cylinder 323 is fixedly connected to a pusher cylinder connector 322, and a second connecting rod 321 is hinged to the pusher cylinder connector 322. The upper end of the second connecting rod 321 is hinged to the first connecting rod 320. The other end of the first connecting rod 320 is hinged to the push rod 316 via the pin 318. The lower part of the push rod 316 is fixedly installed with the clamping guide rail 317. The upper end of the push mechanism slider seat 327 is fixedly installed with the clamping slider 315. The clamping guide rail 317 is slidably connected to the clamping slider 315. One end of the push mechanism fixed seat 325 is hinged to the middle and lower part of the second connecting rod 321. The other end of the push rod 316 is fixedly connected to the push plate 314.

[0104] The extension and retraction of the pusher cylinder 323 causes the pusher cylinder joint 322 to move laterally outward. Since the lower middle part of the second connecting rod 321 is hinged to the pusher mechanism fixed seat 325, the upper end of the second connecting rod 321 will move laterally inward, thereby driving the push rod 316 to move laterally inward through the first connecting rod 320, pushing the brake pad off the working support plate 339 for unloading.

[0105] The lower edge of the pusher plate 314 is on the same horizontal plane as the upper edge of the working support plate 339, which can accurately push the brake pad away.

[0106] The CNC drilling machine 4 is fixedly mounted on the X-axis base plate 401 on the upper part of the main frame 102. Two parallel circular guide rails 425 with seats are fixedly mounted on the upper part of the X-axis base plate 401. An X-axis slider 402 is slidably mounted on the upper part of the circular guide rails 425. A first X-axis slide plate 446 and a second X-axis slide plate 443 are fixedly mounted on the upper part of the X-axis slider 402. An X-axis motor mounting plate 426 is mounted on one end of the X-axis base plate 401. An X-axis motor is installed on the outside of 26. The output shaft of the X-axis motor passes through the X-axis motor mounting plate 426 and extends to the other side of the X-axis motor mounting plate 426. The other end of the output shaft of the X-axis motor is connected to a plum blossom coupling 432. The other end of the plum blossom coupling 432 is connected to an X-axis lead screw 434. The X-axis lead screw 434 is mounted on the X-axis base plate 401 through the X-axis lead screw bearing seat 433. The X-axis lead screw 434 is located above the central axis of the X-axis base plate 401.

[0107] A nut seat 447 is meshed with the X-axis lead screw 434. The upper end of the nut seat 447 is fixedly connected to the lower end of the X-axis slide plate. The nut seat 447 includes a first nut seat 447 connected to the first X-axis slide plate 446 and a second nut seat 447 connected to the second X-axis slide plate 443. A first lead screw nut 448 is provided on one side of the first nut seat 447, and a second lead screw nut 440 is provided on one side of the second nut seat 447. The threads of the first lead screw nut 448 and the second lead screw nut 440 are reverse threads. When the X-axis lead screw 434 rotates, the first lead screw nut 448 and the second lead screw nut 440 will move in opposite directions.

[0108] An X-axis zero-return sensor bracket 449 is also fixedly installed on the X-axis base plate 401. An X-axis proximity switch is installed on the upper part of the X-axis zero-return sensor bracket 449, which can detect whether the X-axis slide has returned to zero.

[0109] A drag chain bracket 418 is installed on the X-axis base plate 401.

[0110] A first drilling machine and a second drilling machine are fixedly mounted on the first X-axis slide plate 446 and the second X-axis slide plate 443. The first drilling machine and the second drilling machine include a first rotary drive 428 and a second rotary drive 429. One end of the first rotary drive 428 and the second rotary drive 429 are connected to a rotary drive connecting block 420. The other end of the rotary drive connecting block 420 is connected to a rotary reducer 417. The other end of the rotary reducer 417 is connected to an X-axis rotary stepper motor 416. The lower end of the rotary drive connecting block 420 is connected to a rotary cylinder 419. The X-axis rotary stepper motor 416 drives the gear inside the rotary drive to rotate through the rotary drive key sleeve 439, thereby adjusting the angle of the drilling machine.

[0111] Positioning sleeves 430 are installed at the lower ends of the first X-axis slide plate 446 and the second X-axis slide plate 443 to fix their positions.

[0112] The upper ends of the first rotary drive 428 and the second rotary drive 429 are rotatably connected to the first turntable connecting plate 427 and the second turntable connecting plate. The upper ends of the first X-axis slide plate 446 and the second X-axis slide plate 443 are both equipped with rotary drive zero-return sensor brackets 403. A rotary light spot switch 404 is fixedly installed on the rotary drive zero-return sensor bracket 403. Rotary zero-return detection plates 424 are installed at corresponding positions on the first turntable connecting plate 427 and the second turntable connecting plate, which can monitor whether the first turntable connecting plate 427 and the second turntable connecting plate have returned to zero.

[0113] A power head chuck 414 is fixedly installed on the upper part of the first rotary table connecting plate 427 and the second rotary table connecting plate. A power head chuck block 413 is fixedly installed on the upper end of the power head chuck 414. A CNC power head 415 is fixedly installed on the rear end of the power head chuck 414. A linear guide pair is provided inside the power head chuck 414. A feed servo motor and a ball screw are installed inside the linear guide pair. A drill bit is installed on the ball screw. The feed servo motor drives the drill bit to reciprocate on the linear guide pair through the ball screw.

[0114] A drill bushing feed mechanism is installed on the upper part of the power head chuck 414. The drill bushing feed mechanism includes a drill bushing slider 411. A drill bushing guide rail 410 is slidably connected to the upper part of the drill bushing slider 411. A guide rail mounting plate 409 is fixedly installed on the upper part of the drill bushing guide rail 410. A drill bushing cylinder 412 is fixedly installed on the upper part of the power head chuck 414 through a drill bushing cylinder 412 bracket. The output shaft of the drill bushing cylinder 412 is fixedly connected to the guide rail mounting plate 409 through a drill bushing cylinder 412 connector. The guide rail mounting plate 409 is driven to move horizontally by the drill bushing cylinder 412.

[0115] The guide rail mounting plate 409 has an L-shaped structure. A fixed drill sleeve 431 and a tool setting block 406 are fixedly installed at the lower end of the suspended end of the guide rail mounting plate 409. A magnet 405 is installed on the tool setting block 406. A drill bit detection sensor mounting plate 408 is also installed at the lower end of the suspended end of the guide rail mounting plate 409. A drill bit proximity switch 407 is installed on the drill bit detection sensor mounting plate 408.

[0116] Since the drilling surface of the steel backing is usually inclined, it will generate a cutting force that pushes the turntable connecting plate to rotate laterally. However, there is backlash in the meshing gear of the turntable connecting plate reduction mechanism. Even a small movement of the turntable connecting plate can lead to a large deviation in the drilling position. Therefore, it is necessary to design an auxiliary clamping mechanism to ensure that the turntable connecting plate does not move during the machining process.

[0117] The auxiliary clamping mechanism includes a brake disc and a pneumatic disc brake 438. The pneumatic disc brake 438 is fixedly mounted on the X-axis slide plate via a pneumatic disc brake mounting bracket 437. The brake disc is fixedly mounted on the lower end of the turntable connecting plate and protrudes from the outer edge of the turntable connecting plate. The brake disc is located inside the pneumatic disc brake 438. When the power head angle is adjusted to the correct position, the pneumatic disc brake 438 will clamp the brake disc to prevent slight movement of the turntable connecting plate during drilling and to ensure drilling accuracy.

[0118] The material storage mechanism 1 consists of a material stack, an electric turntable, a hydraulic lifting mechanism, and detection sensors. Eight material stacks are evenly distributed along the rotation center of the turntable. Each material stack is equipped with an adjustable positioning device. The base plate 120 of the material stack frame is provided with several round holes for inserting the round columns 122 of the material stack to meet the positioning requirements of different types of brake pad steel backings.

[0119] Each stack can store 60-70 steel backings for processing, and eight stacks can meet the processing needs for about 1 hour.

[0120] The turntable is fixed at the output end of the external toothed slewing bearing 112. The stepper motor drives the turntable to rotate through a two-stage reduction mechanism consisting of a reducer and a drive gear 113 and the external toothed slewing bearing 112. A hydraulic lifting mechanism is installed on the frame. After the turntable rotates to the correct position, the hydraulic lifting mechanism is activated to transport the steel back to the initial position for the robot arm to grasp.

[0121] The material storage mechanism 1 is equipped with a zero-return sensor 111, a material-free detection sensor, and a top-feeding sensor, which work in conjunction with the actuator to achieve continuous material feeding of the steel back.

[0122] The dual-axis transfer robot 2 is used to transfer steel back workpieces from the material storage mechanism 1 to the drilling processing station. It consists of a frame, an X-axis robot, a Y-axis robot, a floating electromagnetic chuck, etc., and has two degrees of freedom, enabling two-dimensional motion in a plane.

[0123] The floating electromagnetic chuck consists of a linear guide pair, a spherical bearing, a spring assembly, and the electromagnetic chuck itself. It allows for self-adaptive adjustment of the electromagnetic chuck, enabling more reliable adsorption and gripping of steel backs. The design of the linear guide pair and the cylindrical compression spring 235 allows for self-adaptive adjustment of the electromagnetic chuck's vertical position, while the design of the spherical bearing and the conical helical spring allows for self-adaptive adjustment of the electromagnetic chuck's angle.

[0124] The CNC drilling mechanism is the core mechanism of the flexible CNC drilling system, consisting of two parts: a clamping platform 3 and a CNC drilling machine 4. The clamping platform 3 ensures accurate positioning and reliable clamping of the steel-backed workpiece, while the drilling system allows for programmed adjustment of the distance and angle between the two holes, enabling it to adapt to moldless drilling of various types of steel backings.

[0125] The clamping platform 3 consists of a frame, positioning cylinder, clamping cylinder, parallel clamping mechanism, feed slide 332, unloading mechanism and corresponding position detection sensors, etc. It is driven by pneumatics and the entire clamping platform 3 has a total of five cylinders.

[0126] The frame serves as the fixed foundation for all component structures. It is constructed from carbon steel plates bolted together and fixed to the main frame platform 102. The feed slide mechanism drives the parallel clamping mechanism and the pneumatic gripper cylinder 311 to move back and forth along the linear guide rail, allowing it to avoid the conveying robot and facilitate material unloading.

[0127] The parallel clamping mechanism, which uses a gear and rack mechanism and a double piston structure, not only achieves synchronous movement of the pneumatic gripper but also has a large clamping force, which can clamp the steel back in the center at the machining position.

[0128] The sequence of actions is as follows: the robotic arm lowers the steel back to be drilled, and the positioning cylinder, feed slide 332 mechanism, parallel clamping mechanism, and clamping cylinder operate in sequence to complete the positioning and clamping of the steel back. After the steel back is drilled, the pusher cylinder 323 pushes the steel back through the linkage mechanism to complete the unloading action.

[0129] The drilling system consists of an X-axis motion mechanism, a servo power head, a servo rotary table, a drill bushing feed mechanism, and an auxiliary clamping mechanism. The X-axis motion mechanism is composed of a motor, a bidirectional ball screw, and a linear guide pair. The two rotary table mechanisms are respectively mounted on the first X-axis slide plate 446 and the second X-axis slide plate 443. When the motor rotates, the bidirectional ball screw drives the first X-axis slide plate 446 and the second X-axis slide plate 443 to move synchronously in opposite directions.

[0130] The servo power head includes a CNC power head 415, a feed servo motor, a drill sleeve cylinder 412, and corresponding transmission mechanisms. The spindle servo motor inside the CNC power head 415 drives the drill bit to rotate, providing cutting power. Reasonable cutting parameters are achieved by setting the spindle speed. When the drill bit breaks, the cutting force increases, and the current fed back to the spindle motor changes abruptly. The drill bit breakage can be detected by monitoring the change in the current of the spindle servo motor. The feed servo motor drives the ball screw built into the power head, causing the drill sleeve to feed along the linear guide pair, thereby controlling the drilling depth.

[0131] The power head is mounted on the turntable connecting plate. The turntable connecting plate is driven by a low-backlash helical gear reduction mechanism via an X-axis rotary stepper motor 416 to make the turntable connecting plate rotate in a circular motion, thereby realizing the angle adjustment of the power head relative to the steel back. The turntable connecting plate is supported by precision crossed roller bearings and can withstand large radial, axial and overturning moments.

[0132] The drill sleeve feed mechanism is mounted on the rotary table connecting plate and consists of a drill sleeve rod, a drill bit feed cylinder 329, and a zero-backlash linear guide pair. During operation, the cylinder drives the drill sleeve rod to press it onto the arc surface of the steel back, ensuring that the position of the drill bit will not shift when drilling on the arc surface, thereby realizing moldless drilling of the brake pad steel back.

[0133] Since the drilling surface of the steel backing is usually inclined, it will generate a cutting force that pushes the turntable connecting plate to rotate laterally. However, there is backlash in the meshing gear of the turntable connecting plate reduction mechanism. Even a small movement of the turntable connecting plate can lead to a large deviation in the drilling position. Therefore, it is necessary to design an auxiliary clamping mechanism to ensure that the turntable does not move during the machining process.

[0134] The auxiliary clamping mechanism consists of a brake disc and a pneumatic disc brake 438. The brake disc is fixed on the turntable connecting plate. When the turntable connecting plate rotates, the brake is fixed on the X-axis slide plate. When the power head angle is adjusted to the correct position, the brake will clamp the brake disc to prevent the turntable connecting plate from moving slightly during drilling and to ensure drilling accuracy.

[0135] The specific parameters are as follows:

[0136] Develop a dedicated drilling machine for brake pad steel backing components, with a spindle speed of 50-1500 r / min, repeatability of ±0.05 mm, feed rate of 2-30 m / min, indexing accuracy of ±0.001°, and workpiece pass rate ≥99%.

[0137] It enables multi-variety moldless drilling and can automatically drill more than 400 specifications of steel back parts. The special machine is equipped with a material bin and an automated loading and unloading mechanism, and the processing can be fully automated.

[0138] This project addresses the challenges of labor-intensive manufacturing, low production efficiency, and difficulty in controlling product quality in the automotive brake pad manufacturing process. It independently developed a flexible CNC drilling system suitable for brake pad steel backing components and integrated stamping machines, loading and unloading robots, automatic inspection systems, and surface treatment equipment based on this system. Utilizing key technologies such as robot motion control, production process automation and intelligence, and flexible production line technology, the project jointly developed a flexible CNC drilling system for brake pad steel backing components and integrated it into a fully flexible automated production line for the entire brake pad steel backing component process.

[0139] The flexible CNC drilling system with brake pads has a spindle speed of 50-1500 r / min, a feed rate of 2-30 m / min, and an indexing accuracy of ±0.001°.

[0140] The system has a production efficiency of ≥700 pieces / hour, can adapt to ≥600 specifications, and has a continuous production pass rate of ≥99%.

[0141] The flexible intelligent production line system for brake pads has a production efficiency of ≥600 pieces / hour and a product qualification rate of ≥99%.

[0142] Applied to the automotive brake pad manufacturing industry, this technology can improve drilling efficiency, reduce production costs, and enhance product quality. Economically, it can promote the development of related industries and improve the competitiveness and profitability of enterprises. Based on a flexible CNC drilling system, stamping robots, and high-speed testing equipment, two fully automated flexible production lines for brake pad steel backing components have been built in pilot plants, improving product quality stability and ensuring safe production operations. Simultaneously, it will significantly reduce personnel safety issues and minimize accidents and injuries.

[0143] 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. A flexible numerical control drilling device for brake pads, characterized in that: Including the total frame, the upper part of the total frame is installed with The storage mechanism is used to store and provide brake pads; The clamping platform is used to clamp the brake pad for drilling operation, and unload the brake pad after the drilling operation is completed; The double-shaft transfer manipulator is used to transfer the brake pad from the storage mechanism to the clamping platform; The numerical control drilling machine is used for drilling operation on the brake pad; The storage mechanism includes a rotary support mounting plate, the upper part of the rotary support mounting plate is rotatably connected with a rotary support, the upper part of the rotary support is fixedly installed with a rotating disc, the lower part of the rotary support mounting plate is installed with a rotary stepper motor, the output shaft of the rotary stepper motor penetrates through the rotary support mounting plate and extends above it, the upper end of the output shaft of the rotary stepper motor is connected with a driving gear, and the driving gear is engaged with the threads on the outer surface of the rotary support; The outer side of the rotating disc is installed with a rotary table zero detection plate, and the corresponding position of the rotary support mounting plate is installed with a zero return sensor; The lower end of the rotary support mounting plate is installed with a rotary hydraulic cylinder, the piston rod of the rotary hydraulic cylinder penetrates through the rotary support mounting plate and extends above it, the upper end of the piston rod of the rotary hydraulic cylinder is fixedly installed with a rotary cylinder head, and the rotating disc is provided with a through hole at a position corresponding to the rotary cylinder head; The position of the rotary support mounting plate near the rotary cylinder head is installed with a hydraulic cylinder sensor mounting block, and the first rotary proximity switch is fixedly installed on the hydraulic cylinder sensor mounting block; The lower part of the rotating disc is installed with a plurality of rotary screws at the same interval, and the corresponding position of the rotary support mounting plate is installed with a second rotary proximity switch; The upper part of the rotating disc is installed with a plurality of material stacks in an annular array form, the material stack includes two material stack frame bottom plates, the upper ends of the two material stack frame bottom plates are fixedly installed with a material stack circular column, and the upper ends of the two material stack frame bottom plates are also fixedly installed with a material stack frame rib plate, and the other side of the material stack frame rib plate is fixedly connected with the material stack circular column; The material stack also includes a material stack main bottom plate, the upper end of the material stack main bottom plate is fixedly installed with a material stack main baffle, and the upper end of the material stack main bottom plate is also fixedly installed with a material stack main rib plate, and the other side of the material stack main rib plate is fixedly connected with the material stack main baffle; A plurality of material cushion blocks are also fixedly installed on the rotating disc, and the plurality of material cushion blocks are respectively located between the material stack frame bottom plate and the material stack main bottom plate.

2. The flexible CNC drilling device for brake pad according to claim 1, characterized in that: The upper part of the total frame is fixedly installed with a water tank, and the double-shaft transfer manipulator is installed inside the water tank; The double-shaft transfer manipulator includes two columns fixedly installed in the water tank, the upper ends of the two columns are connected with a synchronous belt linear module, the side surface of the synchronous belt linear module is movably connected with a module connecting plate, the side surface of the module connecting plate is movably connected with a module main support, the lower end of the module main support is movably connected with an electromagnet support, and the electromagnet support is installed with a floating electromagnetic chuck.

3. The flexible CNC drilling device for brake pad according to claim 2, characterized in that: The floating electromagnetic chuck comprises a second guide rail fixedly installed inside the lower end of the mold group main support, the electromagnetic iron support is movably arranged on the second guide rail, a fine adjustment assembly guide rail upper baffle is fixedly arranged at the upper end of the second guide rail, a cylindrical compression spring is arranged between the fine adjustment assembly guide rail upper baffle and the electromagnetic iron support; a joint bearing seat is fixedly installed on one side of the electromagnetic iron support, a conical spiral spring is arranged inside the joint bearing seat, the conical spiral spring is connected with a joint bearing shaft, the lower end of the joint bearing shaft is fixedly connected with the electromagnetic iron support, and the lower end of the electromagnetic iron support is fixedly connected with an electromagnetic iron.

4. The flexible CNC drilling device for brake pad according to claim 1, characterized in that: The clamping platform comprises a clamping workbench bottom plate fixedly installed on the upper end of the general machine frame, two clamping workbench side plates parallel to each other are fixedly installed on the upper portion of the clamping workbench bottom plate, a feeding guide rail mounting plate is fixedly installed on the upper end of the clamping workbench side plate, a feeding guide rail is fixedly installed on the feeding guide rail mounting plate, a feeding slide is movably connected on the feeding guide rail, a parallel opening and closing air cylinder is fixedly installed on the feeding slide, a feeding air cylinder fixing plate is installed at the rear end of the feeding guide rail mounting plate, a feeding air cylinder is fixedly installed on the feeding air cylinder fixing plate, and the piston rod of the feeding air cylinder is fixedly connected with the feeding slide; A gas claw air cylinder mounting plate is fixedly installed on the upper end of the feeding slide, a trapezoidal groove track plate is arranged on the gas claw air cylinder mounting plate, an adjusting arm is movably connected on the trapezoidal groove track plate, a gas claw air cylinder is fixedly connected to the other end of the adjusting arm, and the lower end of the piston rod of the gas claw air cylinder is fixedly installed with a gas claw air cylinder pressing head. Left and right clamping finger fixing plates are respectively installed on the left and right sides of the parallel opening and closing air cylinder, a left clamping finger is fixedly installed on the lower end of the left clamping finger fixing plate, and a right clamping finger is fixedly installed on the lower end of the right clamping finger fixing plate. The upper end of the two clamping workbench side plates is also fixedly installed with a workbench top plate, and the workbench top plate is fixedly connected with a work support plate. The workbench top plate is located at the front side end of the feeding guide rail. The lower edges of the left and right clamping fingers and the upper edge of the work support plate are on the same horizontal plane.

5. The flexible CNC drilling device for brake pad according to claim 4, characterized in that: A pushing mechanism mounting plate is also fixedly installed on the upper end of one side of the clamping workbench bottom plate, a pushing air cylinder seat, a pushing mechanism fixed seat and a pushing mechanism slide block seat are sequentially installed on one side of the pushing mechanism mounting plate from bottom to top, a pushing air cylinder is hinged to the upper end of the pushing air cylinder seat, a pushing air cylinder joint is fixedly connected to the piston rod of the pushing air cylinder, a second connecting rod is hinged to the pushing air cylinder joint, a first connecting rod is hinged to the upper end of the second connecting rod, a pushing rod is hinged to the other end of the first connecting rod, a clamping guide rail is fixedly installed on the lower portion of the pushing rod, a clamping slide block is fixedly installed on the upper end of the pushing mechanism slide block seat, the clamping guide rail is slidably connected with the clamping slide block, and one end of the pushing mechanism fixed seat is hinged to the middle and lower portion of the second connecting rod. The other end of the pushing rod is fixedly connected with a pushing plate. The lower edge of the pushing plate and the upper edge of the work support plate are on the same horizontal plane.

6. The flexible CNC drilling device for brake pad according to claim 1, characterized in that: The numerical control drilling machine is fixedly installed on the X-axis bottom plate at the upper part of the main frame, two parallel seat circular guide rails are fixedly installed on the upper part of the X-axis bottom plate, an X-axis sliding block is slidably installed on the upper part of the seat circular guide rail, an X-axis sliding plate is fixedly installed on the upper part of the X-axis sliding block, an X-axis motor mounting plate is installed on one end of the X-axis bottom plate, an X-axis motor is installed on the outer side of the X-axis motor mounting plate, the output shaft of the X-axis motor penetrates through the X-axis motor mounting plate and extends to the other side of the X-axis motor mounting plate, a plum blossom coupling is connected to the other end of the output shaft of the X-axis motor, an X-axis lead screw is connected to the other end of the plum blossom coupling, the X-axis lead screw is located above the central axis of the X-axis bottom plate, a nut seat is engagedly connected to the X-axis lead screw, and the upper end of the nut seat is fixedly connected with the lower end of the X-axis sliding plate.

7. The flexible CNC drilling apparatus for brake pad of claim 6, wherein: An X-axis zero reset sensor support is also fixedly installed on the X-axis bottom plate, and an X-axis proximity switch is installed on the upper part of the X-axis zero reset sensor support. An X-axis sliding plate is fixedly installed on the X-axis sliding plate, the X-axis sliding plate comprises a rotary drive, one end of the rotary drive is connected with a rotary drive connecting block, the other end of the rotary drive connecting block is connected with a rotary reducer, the other end of the rotary reducer is connected with an X-axis rotary stepper motor, the lower end of the rotary drive connecting block is connected with a rotary cylinder. The upper end of the rotary drive is rotatably connected with a rotary table connecting disc, the upper end of the X-axis sliding plate is installed with a rotary drive zero reset sensor support, a rotary light point switch is fixedly installed on the rotary drive zero reset sensor support, and a rotary zero detection plate is installed on the corresponding position of the rotary table connecting disc. A power head clamping seat is fixedly installed on the upper part of the rotary table connecting disc, a power head clamping block is fixedly installed on the upper end of the power head clamping seat, a numerical control power head is fixedly installed on the rear end of the power head clamping seat, a linear guide rail pair is arranged in the power head clamping seat, a feed servo motor and a ball screw are installed in the linear guide rail pair, a drill bit is installed on the ball screw, and the feed servo motor drives the drill bit to reciprocate on the linear guide rail pair through the ball screw. A drill sleeve feeding mechanism is installed on the upper part of the power head clamping seat, the drill sleeve feeding mechanism comprises a drill sleeve sliding block, a drill sleeve guide rail is slidably connected to the upper part of the drill sleeve sliding block, a guide rail mounting plate is fixedly installed on the upper part of the drill sleeve guide rail, a drill sleeve cylinder is fixedly installed on the upper part of the power head clamping seat, and one end of the output shaft of the drill sleeve cylinder is fixedly connected with the guide rail mounting plate. The guide rail mounting plate is in L-shaped structure, a tool setting block is fixedly installed on the lower end of the free end of the guide rail mounting plate, and a magnet is installed on the tool setting block; a drill bit detection sensor mounting plate is also installed on the lower end of the free end of the guide rail mounting plate, and a drill bit proximity switch is installed on the drill bit detection sensor mounting plate. The X-axis slide plate is further provided with an auxiliary clamping mechanism, which comprises a brake disc and a pneumatic butterfly brake. The pneumatic butterfly brake is fixedly installed on the X-axis slide plate, and the brake disc is fixedly installed on the lower end of the rotary table connecting disc and projects out of the outer edge of the rotary table connecting disc, and is located inside the pneumatic butterfly brake.

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