CN117139679B

CN117139679B - Flexible numerical control drilling device for brake pad

Info

Publication number: CN117139679B
Application number: CN202311312277.3A
Authority: CN
Inventors: 卓盼盼; 盖峻源; 孔祥桐; 裴福鹏
Original assignee: Qufu Temb Auto Brake Co ltd
Current assignee: Qufu Temb Auto Brake Co ltd
Priority date: 2023-10-11
Filing date: 2023-10-11
Publication date: 2026-03-10
Anticipated expiration: 2043-10-11
Also published as: CN117139679A

Abstract

The flexible numerical control drilling device for the brake pads comprises a main frame, a clamping platform, a double-shaft transfer manipulator, a numerical control drilling machine and a production and manufacturing industry of automobile brake pads, wherein the upper part of the main frame is provided with a storage mechanism for storing and providing the brake pads, the clamping platform is used for clamping the brake pads to carry out drilling operation and unloading the brake pads after the drilling operation is completed, the double-shaft transfer manipulator is used for transferring the brake pads from the storage mechanism to the clamping platform, the numerical control drilling machine is used for carrying out drilling operation on the brake pads, the numerical control drilling machine is applied to the production and manufacturing industry of the automobile brake pads, the drilling and manufacturing efficiency can be improved, the production cost is reduced, the product quality is improved, in the aspect of economy, the technology can promote the development of related industries and improve the competitiveness and profitability of enterprises, and the production stability of the product is improved based on two automatic flexible production lines of brake pad steel backs in a pilot scale unit construction based on the flexible numerical control drilling system, a stamping robot and high-speed detection equipment.

Description

Flexible numerical control drilling device for brake pad

Technical Field

The invention relates to the technical field of automobile accessories, in particular to a flexible numerical control drilling device for a brake pad.

Background

With the rapid development of the automobile industry and the increase in market competition, more and more automobile manufacturers and component suppliers have been focusing on product development and innovation, including the manufacture of automobile brake pads. The existing production mode can not meet the increasing market demand, and meanwhile, the added value profit is greatly compressed along with the continuous rising of labor cost. In the existing brake pad production mode, the labor cost still occupies a large part, basically, a manual operation lagging production mode is adopted, the degree of automation is low, new requirements brought by industry development cannot be met, such as how flexible drilling of the brake pad is realized to meet the shape requirements of the brake pad of different vehicle types, how the drilling depth and angle of the brake pad are controlled by a control system to meet the requirements of the brake pad of different vehicle types and under different use conditions, and how the state of the brake pad in the drilling process is monitored and controlled by a multi-information fusion algorithm to ensure the drilling quality and safety.

Disclosure of Invention

In order to solve the problems and overcome the defects in the prior art, the invention provides a flexible numerical control drilling device for a brake pad, which comprises a main frame, wherein the upper part of the main frame is provided with

The storage mechanism is used for storing and providing brake pads;

The clamping platform is used for clamping the brake pad to perform drilling operation and unloading the brake pad after the drilling operation is completed;

the double-shaft transfer manipulator is used for transferring the brake pads from the storage mechanism to the clamping platform;

The numerical control drilling machine is used for drilling the brake pad.

Further, the material storage mechanism comprises a slewing bearing mounting plate, the upper part of the slewing bearing mounting plate is rotatably connected with a slewing bearing, a turntable is fixedly arranged on the upper part of the slewing bearing, a slewing stepping motor is arranged on the lower part of the slewing bearing mounting plate, an output shaft of the slewing stepping motor penetrates through the slewing bearing mounting plate and extends to the upper part of the slewing stepping motor, a driving gear is connected to the upper end of the output shaft of the slewing stepping motor, and the driving gear is meshed with threads on the outer vertical surface of the slewing bearing;

The outer side of the turntable is provided with a turntable zeroing detection plate, and a zeroing sensor is arranged at the corresponding position of the slewing bearing mounting plate;

The lower end of the slewing bearing mounting plate is provided with a slewing hydraulic cylinder, a piston rod of the slewing hydraulic cylinder penetrates through the slewing bearing mounting plate and extends to the upper side of 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 a through hole is formed in a position, corresponding to the slewing cylinder head, of the turntable;

A hydraulic cylinder sensor mounting block is arranged at the position, close to the rotary cylinder head, of the upper part of the rotary support mounting plate, and a first rotary proximity switch is fixedly arranged on the hydraulic cylinder sensor mounting block;

the lower part of the turntable is provided with a plurality of rotary screws at the same interval, and the corresponding position of the rotary support mounting plate is provided with a second rotary proximity switch.

Further, the upper part of the turntable is provided with a plurality of stacks in a ring-shaped array form, each stack comprises two stack frame bottom plates, the upper ends of the two stack frame bottom plates are fixedly provided with stack round stand columns, the upper ends of the two stack frame bottom plates are fixedly provided with stack frame rib plates, and the other sides of the stack frame rib plates are fixedly connected with the stack round stand columns;

The material stack further comprises a material stack main bottom plate, a material stack main baffle is fixedly arranged at the upper end of the material stack main bottom plate, a material stack main rib plate is fixedly arranged at the upper end of the material stack main bottom 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 fixedly arranged on the turntable and are respectively positioned between the material stack frame bottom plate and the material stack main bottom plate.

Further, a water tank is fixedly arranged at the upper part of the main frame, and the double-shaft transfer manipulator is arranged in the water tank;

The double-shaft transfer manipulator comprises two upright posts fixedly installed in a water tank, the upper ends of the two upright posts are connected with synchronous belt linear modules, the side faces of the synchronous belt linear modules are connected with module connecting plates in a movable mode, the side faces of the module connecting plates are connected with module main supports in a movable mode, the lower ends of the module main supports are connected with electromagnet supports in a movable mode, and floating electromagnetic chucks are installed on the electromagnet supports.

Further, the floating electromagnetic chuck comprises a second guide rail fixedly arranged in 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 joint bearing seat, a conical spiral spring is arranged in the joint bearing seat and is connected with a joint bearing shaft, the lower end of the joint bearing shaft is fixedly connected with the electromagnet support, and the lower end of the electromagnet support is fixedly connected with an electromagnet.

Further, the clamping platform comprises a clamping workbench bottom plate fixedly arranged at the upper end of the main frame, two mutually parallel clamping workbench side plates are fixedly arranged at the upper part of the clamping workbench bottom plate, a feeding guide rail mounting plate is fixedly arranged at the upper end of the clamping workbench side plate, a feeding guide rail is fixedly arranged on the feeding guide rail mounting plate, a feeding sliding seat is movably connected to the feeding guide rail, a parallel opening and closing cylinder is fixedly arranged on the feeding sliding seat, a feeding cylinder fixing plate is arranged at the rear end of the feeding guide rail mounting plate, a feeding cylinder is fixedly arranged on the feeding cylinder fixing plate, and a piston rod of the feeding cylinder is fixedly connected with the feeding sliding seat;

The upper end of the feeding sliding seat is fixedly provided with a pneumatic claw cylinder mounting plate, the pneumatic claw cylinder mounting plate is provided with a trapezoid groove track plate, the trapezoid groove track plate is movably connected with an adjusting arm, the other end of the adjusting arm is fixedly connected with a pneumatic claw cylinder, and the lower end of a piston rod of the pneumatic claw cylinder is fixedly provided with a pneumatic claw cylinder pressure head;

a left clamping finger fixing plate and a right clamping finger fixing plate are respectively arranged at the left side and the right side of the parallel opening and closing cylinder, a left clamping finger is fixedly arranged at the lower end of the left clamping finger fixing plate, and a right clamping finger is fixedly arranged at the lower end of the right clamping finger fixing plate;

the upper ends of the two clamping workbench side plates are fixedly provided with workbench top plates, and the upper ends of the workbench top plates are fixedly connected with a workbench support plate;

The workbench top plate is positioned at the front side end of the feeding guide rail;

the lower edges of the left clamping finger and the right clamping finger are on the same horizontal plane with the upper edge of the working support plate.

Further, a pushing mechanism mounting plate is fixedly mounted at the upper end of one side of the bottom plate of the clamping workbench, a pushing cylinder seat, a pushing mechanism fixing seat and a pushing mechanism sliding block seat are sequentially mounted at one side of the pushing mechanism mounting plate from bottom to top, a pushing cylinder is hinged to the upper end of the pushing cylinder seat, a pushing cylinder connector is fixedly connected to a piston rod of the pushing cylinder, a second connecting rod is hinged to the pushing cylinder connector, a first connecting rod is hinged to the upper end of the second connecting rod, a push rod is hinged to the other end of the first connecting rod, a clamping guide rail is fixedly mounted at the lower part of the push rod, a clamping sliding block is fixedly mounted at the upper end of the pushing mechanism sliding block seat, the clamping guide rail is connected with the clamping sliding block in a slidable mode, and one end of the pushing mechanism fixing seat is hinged to the middle lower part of the second connecting rod;

the other end of the push rod is fixedly connected with a pushing plate;

the lower edge of the pushing plate and the upper edge of the working support plate are on the same horizontal plane.

Further, the numerical control drilling machine is fixedly arranged on an X-axis bottom plate on the upper part of the main frame, two parallel circular guide rails with seats are fixedly arranged on the upper part of the X-axis bottom plate, an X-axis sliding block is arranged on the upper part of the circular guide rails with the seats in a sliding mode, an X-axis return-to-zero sensor bracket is fixedly arranged on the X-axis bottom plate, an X-axis motor mounting plate is arranged at one end of the X-axis bottom plate, an X-axis motor is arranged on the outer side of the X-axis motor mounting plate, an 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 coupler is connected to the other end of the output shaft of the X-axis motor, an X-axis lead screw is arranged above the central axis of the X-axis bottom plate, a nut seat is meshed and connected to the upper end of the nut seat and the lower end of the X-axis sliding block, and an X-axis proximity switch is arranged on the upper part of the X-axis return-to-zero sensor bracket.

Further, a drilling machine is fixedly arranged on the X-axis sliding plate and 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 speed reducer, the other end of the rotary speed reducer is connected with an X-axis rotary stepping motor, and 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 provided with a rotary drive zeroing sensor bracket, the rotary drive zeroing sensor bracket is fixedly provided with a rotary spot switch, and a rotary zeroing detection plate is arranged at a corresponding position on the rotary table connecting disc;

The upper part of the turntable connecting disc is fixedly provided with a power head clamping seat, the upper end of the power head clamping seat is fixedly provided with a power head clamping block, the rear end of the power head clamping seat is fixedly provided with a numerical control power head, the inside of the power head clamping seat is provided with a linear guide rail pair, the inside of the linear guide rail pair is provided with a feeding servo motor and a ball screw, the ball screw is provided with a drill bit, and the feeding servo motor drives the drill bit to reciprocate on the linear guide rail pair through the ball screw;

The upper part of the power head clamping seat is provided with a drill bushing feeding mechanism, the drill bushing feeding mechanism comprises a drill bushing sliding block, the upper part of the drill bushing sliding block is connected with a drill bushing guide rail in a sliding manner, the upper part of the drill bushing guide rail is fixedly provided with a guide rail mounting plate, the upper part of the power head clamping seat is fixedly provided with a drill bushing cylinder, and one end of an output shaft of the drill bushing cylinder is fixedly connected with the guide rail mounting plate;

the lower end of the suspension end of the guide rail mounting plate is also provided with a drill bit detection sensor mounting plate, and a drill bit proximity switch is arranged on the drill bit detection sensor mounting plate;

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, the pneumatic butterfly brake is fixedly arranged on the X-axis sliding plate, the brake disc is fixedly arranged at the lower end of the turntable connecting plate and extends out of the outer edge of the turntable connecting plate, and the brake disc is positioned in the pneumatic butterfly brake.

The invention has the beneficial effects that

The drilling machine is applied to the production and manufacturing industry of automobile brake pads, can improve drilling machining efficiency, reduce production cost and improve product quality. In the aspect of economy, the technology can promote the development of related industries and promote the competitiveness and profitability of enterprises. Based on two flexible numerical control drilling systems, stamping robots and high-speed detection equipment, the whole-flow automatic flexible production lines for the brake block steel back piece are built in pilot-scale units, the product quality stability is improved, and the safety of production operation is guaranteed. Meanwhile, the safety problem of personnel is greatly reduced, and safety accidents and personnel injuries are greatly reduced.

Developing a drilling machine special for a brake block steel backing piece, wherein the rotating speed of a main shaft is 50-1500 r/min, the repeated positioning accuracy is +/-0.05 mm, the feeding speed is 2-30m/min, the indexing accuracy is +/-0.001 degrees, and the machining qualification rate of workpieces is more than or equal to 99%;

The multi-variety die-free drilling function is realized, the automatic drilling and processing of steel back pieces with more than 400 specifications can be adapted, the special machine is provided with a stock bin and an automatic feeding and discharging mechanism, and the whole process of the processing can be automated;

Has the following advantages:

Flexibility the project adopts the design proposal of flexibility, and can adapt to the drilling processing requirements of steel back pieces with different specifications and shapes.

Compared with the traditional numerical control drilling machine, the flexible numerical control drilling equipment designed in the project has the advantages of lower cost and certain price.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic diagram of a storage mechanism according to the present invention;

FIG. 3 is a schematic top view of the structure of the storage mechanism of the present invention;

FIG. 4 is a schematic front view of the structure of the storage mechanism of the present invention;

FIG. 5 is a schematic front view of a dual-axis transfer robot according to the present invention;

FIG. 6 is a schematic side view of a dual-axis transfer robot of the present invention;

FIG. 7 is a schematic top view of a dual-axis transfer robot of the present invention;

FIG. 8 is a schematic view of a clamping platform according to the present invention;

FIG. 9 is a schematic front view of the clamping platform structure of the present invention;

FIG. 10 is a schematic side view of the clamping platform structure of the present invention;

FIG. 11 is a schematic diagram of a numerical control drilling machine according to the present invention;

FIG. 12 is a schematic side view of a numerical control drilling machine according to the present invention;

FIG. 13 is a schematic diagram of a front view of a numerical control drilling machine according to the present invention;

FIG. 14 is a schematic top view of a numerical control drilling machine according to the present invention;

FIG. 15 is a schematic view of a sink structure according to the present invention;

1. the device comprises a storage mechanism, a double-shaft transfer manipulator, a clamping platform, a numerical control drilling machine and a numerical control drilling machine, wherein the storage mechanism is 2;

101. Machine tool feet, 102, a main frame, 103, a machine shell, 104, a water tank, 105, a rotary hydraulic cylinder, 106, a second rotary proximity switch, 107, a hydraulic cylinder sensor mounting block, 108, a first rotary proximity switch, 109, a rotary screw, 110, a rotary table return-to-zero detection plate, 111, a return-to-zero sensor, 112, a rotary support, 113, a driving gear, 114, a rotary stepping motor, 118, a rotary support mounting plate, 119, a rotary table, 120, a material stack frame bottom plate, 121, a material stack frame rib plate, 122, a material stack round column, 123, a material cushion block, 124, a material stack main baffle, 125, a material stack main bottom plate, 126, a material stack main rib plate, 127, a drag chain groove, 128, a slide way, 129, a water receiving disc, 131 and a rotary cylinder head;

201. The upright post adapter plate, 202, upright post, 203, synchronous belt linear module, 204, lifting motor, 205, up-down motor cover, 206, up-down module cover plate, 207, module connecting plate, 208, lower limit detection plate, 209, blowing mounting plate, 210, split assembly, 212, left-right direction drag chain support plate II, 214, up-down drag chain support I, 215, follow-up pulley, 218, synchronous belt pressing plate, 220, up-down drag chain support II, 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 plates, 231, valve plate mounting plates, 232, 2-position cartridge valves, 233, 4-position cartridge valves, 234, a second guide rail, 235, a cylindrical compression spring, 236, a second guide rail slider, 237, a joint bearing shaft, 238, a joint bearing seat, 240, a joint bearing sensor, 241, a fine adjustment assembly guide rail upper baffle plate, 242, a stepping motor mounting plate, 243, a lifting motor mounting plate, 244, a lifting motor fixing nut, 245, a lifting motor end synchronous pulley, 246, a module main support upper plate, 247, an electromagnet support, 248, a left and right direction drag chain support plate I, 249, a proximity switch seat, 250, a manipulator duplex cylinder, 251, a sensor cylinder mounting plate;

301. A clamping workbench bottom plate 302, clamping workbench rib plates 303, clamping workbench side plates 304, clamping proximity switch brackets 305, clamping proximity switches 306, left clamping finger fixing plates 307, left clamping fingers 308, parallel opening and closing cylinders 309, adjusting arm clamping blocks 310, fixing handles 311, air jaw cylinders 312, air jaw cylinder pressure heads 313, first positioning stop blocks 314, pushing plates 315, clamping slide blocks 316, pushing rods 317, clamping guide rails 318, pin shafts 320, first connecting rods 321, second connecting rods 322, pushing cylinder joints 323, pushing cylinders 324 and pushing cylinder seats, 325, pushing mechanism fixing base, 326, pushing mechanism mounting plate, 327, pushing mechanism sliding block base, 328, clamping connection plate, 329, feeding cylinder, 330, feeding cylinder fixing plate, 331, rod end joint bearing, 332, feeding slide, 333, air jaw cylinder mounting plate, 334, trapezoidal groove track plate, 335, adjusting arm, 336, positioning pushing plate, 337, duplex cylinder, 338, supporting nail, 339, work supporting plate, 340, work table top plate, 341, second positioning block, 342, feeding guide rail, 343, feeding guide rail mounting plate, 344, right clamping finger fixing plate, 345, right clamping finger;

401. An X-axis bottom plate, 402, an X-axis sliding block, 403, a rotary drive return-to-zero sensor bracket, 404, a rotary light spot switch, 405, a magnet, 406, a tool setting block, 407, a drill bit proximity switch, 408, a drill bit detection sensor mounting plate, 409, a guide mounting plate, 410, a drill bushing guide, 411, a drill bushing sliding block, 412, a drill bushing cylinder, 413, a power head clamping block, 414, a power head clamping seat, 415, a numerical control power head, 416, an X-axis rotary stepping motor, 417, a rotary speed reducer, 418, a drag chain bracket, 419, a rotary cylinder, 420, a rotary drive connecting block, 422, an X-axis return-to-zero sensor, 423, a lead screw bearing seat, 424, a rotary return-to-zero detection plate, 425, a seated circular guide, 426, an X-axis motor mounting plate, 427, first turret connecting disc, 428, first slewing drive, 429, second slewing 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, slewing drive key sleeve, 440, second screw nut, 441, second drill sleeve cylinder support, 442, second drill sleeve cylinder joint, 443, second X-axis slide, 444, first drill sleeve cylinder joint, 445, first drill sleeve cylinder support, 446, first X-axis slide, 447, nut seat, 448, first screw nut, 449, X-axis zeroing sensor support.

Detailed Description

In order to make the implementation purposes, technical solutions and advantages of the present invention more clear, the present invention will be described in more detail below with reference to fig. 1 to 15 of the present invention.

The invention provides a flexible numerical control drilling device for a brake pad, which comprises a main frame 102, wherein a storage mechanism 1 is arranged at the upper part of the main frame 102 and is used for storing and providing the brake pad; the automatic drilling device comprises a clamping platform 3 for clamping a brake pad to perform drilling operation and unloading the brake pad after the drilling operation is completed, a double-shaft transfer manipulator 2 for transferring the brake pad from a material storage mechanism 1 to the clamping platform 3, a numerical control drilling machine 4 for performing drilling operation on the brake pad, wherein the material storage mechanism 1 comprises a slewing bearing mounting plate 118, a slewing bearing 112 is rotatably connected to the upper part of the slewing bearing mounting plate 118, a turntable 119 is fixedly arranged on the upper part of the slewing bearing 112, a slewing stepping motor 114 is arranged on the lower part of the slewing bearing mounting plate 118, an output shaft of the slewing stepping motor 114 penetrates through the slewing bearing mounting plate 118 and extends to the upper part of the slewing bearing mounting plate, a driving gear 113 is connected to the upper end of the output shaft of the slewing stepping motor 114, the driving gear 113 is meshed with threads on the outer vertical surface of the slewing bearing 112, a turntable zeroing detection plate 110 is arranged on the outer side of the slewing bearing 119, a zeroing sensor 111 is arranged at the corresponding position of the slewing bearing mounting plate 118, a slewing hydraulic cylinder 105 is arranged on the lower end of the slewing bearing mounting plate 118, a piston rod of the slewing hydraulic cylinder 105 penetrates through the slewing bearing mounting plate 118 and extends to the upper part of the slewing bearing mounting plate, a turntable 119 is arranged on the slewing bearing, a turntable 131 is arranged on the upper end of the slewing bearing mounting plate 105, a position of the slewing head 131 is arranged close to the slewing bearing head of the slewing bearing 107, a position of the slewing sensor is arranged on the slewing bearing head 131, and is arranged close to the slewing bearing 107, a second rotary proximity switch 106 is mounted at a corresponding position of the slewing bearing mounting plate 118; the upper part of the turntable 119 is provided with a plurality of stacks in a ring-shaped array form, each stack comprises two stack frame bottom plates 120, the upper ends of the two stack frame bottom plates 120 are fixedly provided with stack round upright posts 122, the upper ends of the two stack frame bottom plates 120 are fixedly provided with stack frame rib plates 121, and the other sides of the stack frame rib plates 121 are fixedly connected with the stack round upright posts 122; the material stack further comprises a material stack main bottom plate 125, a material stack main baffle 124 is fixedly arranged at the upper end of the material stack main bottom plate 125, a material stack main rib plate 126 is fixedly arranged at the upper end of the material stack main bottom plate 125, 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 fixedly arranged on the turntable 119, the material cushion blocks 123 are respectively positioned between the material stack frame bottom plate 120 and the material stack main bottom plate 125, a water tank 104 is fixedly arranged at the upper part of the main frame 102, a double-shaft transfer manipulator 2 is arranged in the water tank 104, the double-shaft transfer manipulator 2 comprises two upright posts 202 fixedly arranged in the water tank 104, the upper ends of the two upright posts 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, the side surfaces of the module connecting plates 207 are movably connected with module main brackets 224, the lower ends of the module main brackets 224 are movably connected with electromagnet supports 247, the electromagnet supports 247 are provided with floating electromagnetic chucks, the floating electromagnetic chucks comprise second guide rails 234 which are fixedly arranged in the lower ends of the main brackets 224, the second guide rails 234 are movably arranged on the second guide rails 234, a cylindrical compression spring 235 is arranged between the upper baffle 241 of the fine adjustment assembly guide rail and the electromagnet support 247; a joint bearing seat 238 is fixedly arranged on one side of the electromagnet support 247, a conical spiral spring 226 is arranged in the joint bearing seat 238, the conical spiral spring 226 is connected with a joint bearing shaft 237, the lower end of the joint 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 arranged at the upper end of the main frame 102, two mutually parallel clamping workbench side plates 303 are fixedly arranged at the upper part of the clamping workbench bottom plate 301, a feeding guide rail mounting plate 343 is fixedly arranged at the upper end of the clamping workbench side plates 303, a feeding guide rail is fixedly arranged on the feeding guide rail mounting plate 343, a feeding sliding seat 332 is movably connected to the feeding guide rail 342, a parallel opening and closing air cylinder 308 is fixedly arranged on the feeding sliding seat 332, a feeding air cylinder fixing plate 330 is arranged at the rear end of the feeding guide rail mounting plate 343, a feeding air cylinder 329 is fixedly arranged on the feeding air cylinder fixing plate 330, a piston rod of the feeding air cylinder 329 is fixedly connected with the feeding sliding seat 332, an air jaw air cylinder mounting plate 333 is fixedly arranged at the upper end of the feeding sliding seat 332, a trapezoid groove track plate 334 is movably connected with an adjusting arm 335, an air jaw air cylinder 311 is fixedly connected to the other end of the adjusting arm 335, an air jaw air cylinder pressing head 312 is fixedly arranged at the lower end of the piston rod of the air jaw air cylinder 311, a left finger fixing plate 306 and a right finger fixing plate 307 are respectively arranged at the left and right sides of the parallel opening and closing air cylinder 308, the lower ends of the right clamping finger fixing plates 344 are fixedly provided with right clamping fingers 345, the upper ends of the two clamping workbench side plates 303 are fixedly provided with workbench top plates 340, the upper ends of the workbench top plates 340 are fixedly connected with a workbench support plate 339, the workbench top plates 340 are positioned at the front side ends of the feed guide rails 342, the lower edges of the left clamping fingers 307 and the right clamping fingers 345 and the upper edge of the workbench support plate 339 are positioned on the same horizontal plane, the upper ends of one side of the clamping workbench bottom plates 301 are fixedly provided with a pushing mechanism mounting plate 326, one side of the pushing mechanism mounting plate 326 is sequentially provided with a pushing cylinder seat 324 from bottom to top, The upper end of the pushing cylinder seat 324 is hinged with a pushing cylinder 323, a piston rod of the pushing cylinder 323 is fixedly connected with a pushing cylinder joint 322, the pushing cylinder joint 322 is hinged with a second connecting rod 321, the upper end of the second connecting rod 321 is hinged with a first connecting rod 320, the other end of the first connecting rod 320 is hinged with a push rod 316, the lower part of the push rod 316 is fixedly provided with a clamping guide rail 317, the upper end of the pushing mechanism sliding seat 327 is fixedly provided with a clamping sliding block 315, and the clamping guide rail 317 is connected with the clamping sliding block 315 in a sliding manner; the other end of the push rod 316 is fixedly connected with a pushing plate 314, the lower edge of the pushing plate 314 and the upper edge of a working support plate 339 are positioned on the same horizontal plane, a numerical control drilling machine 4 is fixedly arranged on an X-axis bottom plate 401 at the upper part of the total frame 102, two parallel circular guide rails with seats 425 are fixedly arranged at the upper part of the X-axis bottom plate 401, an X-axis sliding block 402 is slidably arranged at the upper part of the circular guide rails with seats 425, an X-axis motor mounting plate 426 is arranged at one end of the X-axis bottom plate 401, an X-axis motor is arranged at the outer side of the X-axis motor mounting plate 426, an 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 coupler 432, the other end of the plum blossom coupler 432 is connected with an X-axis screw 434 which is positioned above the central axis of the X-axis bottom plate 401, a nut seat 447 is engaged and connected with the X-axis screw 434, the upper end of the nut seat 447 is fixedly connected with the lower end of the X-axis sliding plate; an X-axis zeroing sensor bracket 449 is fixedly arranged on the X-axis bottom plate 401, and an X-axis proximity switch is arranged on the upper part of the X-axis zeroing sensor bracket 449; the drilling machine is fixedly arranged on the X-axis sliding plate and 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 speed reducer 417, the other end of the rotary speed reducer 417 is connected with an X-axis rotary stepping motor 416, and 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 rotary table connecting disc, the upper end of the X-axis sliding plate is provided with a rotary drive return-to-zero sensor bracket 403, a rotary spot switch 404 is fixedly arranged on the rotary drive return-to-zero sensor bracket 403, a rotary return-to-zero detection plate 424 is arranged at a corresponding position on the rotary table connecting disc, a power head clamping seat 414 is fixedly arranged at the upper part of the rotary table connecting disc, a power head clamping block 413 is fixedly arranged at the upper end of the power head clamping seat 414, a numerical control power head 415 is fixedly arranged at the rear end of the power head clamping seat 414, a linear guide rail pair is arranged in the power head clamping seat 414, a feed servo motor and a ball screw are arranged in the linear guide rail pair, a drill bit is arranged on the ball screw, the feed servo motor drives the drill bit to reciprocate on the linear guide rail pair through the ball screw, a drill bushing feeding mechanism is arranged at the upper part of the power head clamping seat 414, the drill bushing feeding mechanism comprises a drill bushing sliding block 411, a drill bushing guide rail 410 is slidably connected at the upper part of the drill bushing sliding block 411, a guide rail mounting plate 409 is fixedly arranged at the upper part of the drill bushing guide rail 410, one end of an output shaft of the drill bushing cylinder 412 is fixedly connected with a guide rail mounting plate 409, the guide rail mounting plate 409 is of an L-shaped structure, a cutter setting block 406 is fixedly arranged at the lower end of a suspended end of the guide rail mounting plate 409, a magnet 405 is arranged on the cutter setting block 406, a drill bit detection sensor mounting plate 408 is further arranged at the lower end of the suspended end of the guide rail mounting plate 409, a drill bit proximity switch 407 is arranged on the drill bit detection sensor mounting plate 408, an auxiliary clamping mechanism is fixedly arranged on an X-axis sliding plate, the auxiliary clamping mechanism comprises a brake disc and a pneumatic butterfly brake 438, the pneumatic butterfly brake 438 is fixedly arranged on the X-axis sliding plate, the brake disc is fixedly arranged at the lower end of a turntable connecting disc and extends out of the outer edge of the turntable connecting disc, and the brake disc is positioned inside the pneumatic butterfly brake 438.

Among other things, the following are embodiments of the invention

The flexible numerical control drilling system designed in the project is mainly applied to automatic drilling of the steel back side surface of the automobile brake pad. The steel back is a fan-shaped carbon steel sheet, and two holes with the diameter of 2mm or 2.5mm are symmetrically drilled on the fan-shaped cambered surface of the steel back to be used as mounting holes of the friction limiting plate. The drilling system body comprises an eight-station storage mechanism 1, a double-shaft transfer manipulator 2, a numerical control drilling machine 4 and other auxiliary structures which are arranged on the same frame, and the functions of automatic feeding of a storage warehouse, station transfer of a steel back and automatic drilling are completed together.

The flexible numerical control drilling device for the brake block comprises a main frame 102, wherein the upper part of the main frame 102 is provided with

A storage mechanism 1 for storing and providing brake pads;

A clamping platform 3 for clamping the brake pad for drilling operation and unloading the brake pad after the drilling operation is completed;

a biaxial transfer robot 2 for transferring brake pads from the stock mechanism 1 to the clamping platform 3;

And the numerical control drilling machine 4 is used for drilling the brake pad.

The general frame 102 is the cuboid structure that metal pipe fitting welded formation, the fixed lathe lower extreme that is provided with of general frame 102 is lower margin 101, casing 103 has been arranged at four sides of general frame 102, play the effect of protection inner structure, upper portion one side fixed mounting of general frame 102 has basin 104, water collector 129 is installed to the lower part of basin 104, drilling cooling water can gather in basin 104, then flow into water collector 129 through the apopore on basin 104, in gathering the cask or other water storage device of transporting outside, place the polluted environment, and can carry out water resource cyclic utilization, biax transfer manipulator 2 and clamp platform 3 install inside basin 104.

The position of the upper part of the main frame 102 on the same side as the water tank 104 is the installation position of the numerical control drilling machine 4, the other side of the main frame 102 is the installation position of the storage mechanism 1, and the front part of the main frame is also provided with a drag chain groove 127 for regulating and accommodating cables.

A slide 128 is also fixedly arranged inside the water tank 104, and when the brake pads are drilled, the brake pads are unloaded from the clamping platform 3, fall on the slide 128 and are transferred into the collecting device along the slide 128.

The material storage mechanism 1 comprises a slewing bearing mounting plate 118, a slewing bearing 112 is rotatably connected to the upper portion of the slewing bearing mounting plate 118, a turntable 119 is fixedly arranged on the upper portion of the slewing bearing 112, a slewing stepping motor 114 is arranged on the lower portion of the slewing bearing mounting plate 118, an output shaft of the slewing stepping motor 114 penetrates through the slewing bearing mounting plate 118 and extends to the upper portion of the slewing stepping motor, a driving gear 113 is connected to the upper end of the output shaft of the slewing stepping motor 114, the driving gear 113 is meshed with threads on the outer vertical face of the slewing bearing 112, the driving gear 113 is driven to rotate through the slewing stepping motor 114, the slewing bearing 112 is driven to rotate through the meshing of the threads, so that the turntable 119 synchronously rotates, a material stack is moved to a preset position, and at the moment, a brake pad in the material stack can be transferred to the clamping platform 3 by the double-shaft transfer manipulator 2.

The outer side of the turntable 119 is provided with a turntable zeroing detection plate 110, the corresponding position of the slewing bearing mounting plate 118 is provided with a zeroing sensor 111, and when the turntable zeroing detection plate 110 rotates to the position where the zeroing sensor 111 is located, whether the turntable 119 is zeroed can be detected;

The lower end of the slewing bearing mounting plate 118 is provided with a slewing hydraulic cylinder 105, a piston rod of the slewing hydraulic cylinder 105 penetrates through the slewing bearing mounting plate 118 and extends to the upper side of the slewing bearing mounting plate, a slewing cylinder head 131 is fixedly arranged at the upper end of the piston rod of the slewing hydraulic cylinder 105, a through hole is formed in a position of the turntable 119 corresponding to the slewing cylinder head 131, the through hole is positioned in the center of a material stack, the slewing cylinder head 131 can penetrate through the through hole and extend to the upper side of the turntable 119, when the slewing hydraulic cylinder 105 stretches, the slewing cylinder head 131 props up a brake pad to jack up the brake pad, the brake pad can reach a preset position in the longitudinal height, and at the moment, the double-shaft transfer manipulator 2 can transfer the brake pad in the material stack to the clamping platform 3;

A hydraulic cylinder sensor mounting block 107 is mounted on the upper part of the slewing bearing mounting plate 118 and close to the slewing cylinder head 131, and a first slewing proximity switch 108 is fixedly mounted on the hydraulic cylinder sensor mounting block 107, so that the position and the height of the hydraulic cylinder can be monitored;

The lower part of the turntable 119 is provided with a plurality of rotary screws 109 at the same interval, the corresponding position of the rotary support mounting plate 118 is provided with a second rotary proximity switch 106, whether the rotation of the turntable 119 is in place or not can be monitored through the opening and closing of the second rotary proximity switch 106, namely whether a material stack rotates in place or not on a horizontal position, the double-shaft transfer manipulator 2 only works under the condition that the material stack is in place, and the phenomenon that the material cannot be transferred due to the operation of the double-shaft transfer manipulator 2 under the condition that the material stack does not rotate in place is prevented, even mechanical faults, such as collision between the double-shaft transfer manipulator 2 and the material stack, occur.

The upper part of the turntable 119 is provided with a plurality of stacks in a ring-shaped array form, in the embodiment, the stacks are provided with eight, each stack comprises two stack frame bottom plates 120, the upper ends of the two stack frame bottom plates 120 are fixedly provided with stack round upright posts 122, the upper ends of the two stack frame bottom plates 120 are fixedly provided with stack frame rib plates 121, and the other sides of the stack frame rib plates 121 are fixedly connected with the stack round upright posts 122, so that the effect of reinforcing the structural strength is achieved;

the material stack further comprises a material stack main bottom plate 125, a material stack main baffle 124 is fixedly arranged at the upper end of the material stack main bottom plate 125, a material stack main rib plate 126 is fixedly arranged at the upper end of the material stack main bottom plate 125, and the other side of the material stack main rib plate 126 is fixedly connected with the material stack main baffle 124;

The material stack main baffle 124 is matched with the two material stack round upright posts 122 to form a solid brake block accommodating space, the brake blocks are placed in the accommodating space in a stacked solid form, the side surfaces of the accommodating space are open, and when the turntable 119 rotates to a preset position, the open side surfaces face the double-shaft transfer manipulator 2, and the material transfer is more convenient, safe and quick.

Still fixed mounting has a plurality of material cushion 123 on the carousel 119, and two material cushion 123 are arranged to every material stack, and material cushion 123 is located between material stack frame bottom plate 120 and the material stack owner bottom plate 125, can fill up the brake block, and when the brake block was placed in the material stack, there was certain space between brake block and the carousel 119, conveniently took.

The double-shaft transfer manipulator 2 comprises two upright post adapter plates 201 fixedly installed in the water tank 104, upright posts 202 are installed at the upper ends of the two upright post adapter plates 201, synchronous belt linear modules 203 are connected to the upper ends of the two upright posts 202, and module connecting plates 207 are movably connected to the side surfaces of the synchronous belt linear modules 203 and driven by a motor, so that the module connecting plates 207 can transversely move;

The upper portion of module connecting plate 207 is installed and is gone up and down direction motor cover 205, the upper and lower direction motor cover 205 internally mounted has lift motor mounting panel 243, install lift motor 204 through lift motor fixation nut 244 on the lift motor mounting panel 243, the side of lift motor 204 is connected with module main support 224 in a movable mode, can make module main support 224 reciprocate through lift motor 204 drive, module main support 224 is the rectangle tubular structure of vertical setting, the front end of module main support 224 still is provided with upper and lower direction module apron 206, can cover inner structure, module main support upper plate 246 and module main support hypoplastron 229 are installed respectively to the upper and lower both ends of module main support 224, the lower part of module main support 224 is connected with electro-magnet support 247 in a movable mode, install floating electromagnetic chuck on the electro-magnet support 247, can adsorb the brake block and shift through floating electromagnetic chuck.

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 downwards beyond the limit.

The output shaft of the lifting motor 204 is provided with a lifting motor end synchronous pulley 245, the lifting motor end synchronous pulley 245 drives a follower pulley 215 arranged on the motor cover 205 in the up-down direction to rotate, the side surface of the module connecting plate 207 is fixedly connected with a first guide rail sliding block 221, 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 connected with the first guide rail 223 in a slidable mode, the inner side of the first guide rail 223 is also provided with a synchronous belt 222, the first guide rail 223 is provided with a synchronous belt pressing plate 218, the synchronous belt 222 is pressed against the first guide rail 223, the synchronous belt 222 is contacted with the follower pulley 215, the lifting motor 204 drives the follower pulley 215 to rotate, and the synchronous belt 222 moves up and down through friction force between the follower pulley 215 and the synchronous belt 222, so that the electromagnet support 247 moves up and down.

The upper end of the module main bracket 224 is fixedly provided with a second drag chain bracket plate 212 in the left-right direction and a first drag chain bracket 214 in the up-down direction, and the rear side of the synchronous belt linear module 203 is provided with a first drag chain bracket plate 248 in the left-right direction through a module mounting plate.

The side of the module main support 224 is also provided with a robot sensor 225 capable of monitoring the position of the module main support 224.

The sensor cylinder mounting plate 251 is installed to the lower part of hold-in range linearity module 203 one end, installs proximity switch seat 249 on the sensor cylinder mounting plate 251, can monitor the position of module connecting plate 207 and module main support 224, and when module connecting plate 207 and module main support 224 moved in place, directly over being located the material stack, can be with the accurate absorption of brake block. Also mounted here is an air blow mounting plate 209, and a separate assembly 210 is mounted on the air blow mounting plate 209 to prevent a plurality of brake pads from being adsorbed at a time.

The lower part of the synchronous belt linear module 203 is also provided with a manipulator duplex cylinder 250.

The floating electromagnetic chuck comprises a second guide rail 234 fixedly arranged in the lower end of the module main bracket 224, an electromagnet support 247 is movably arranged on the second guide rail 234 and can move up and down on the second guide rail 234, a fine adjustment assembly guide rail upper baffle 241 is fixedly arranged at the upper end of the second guide rail 234 and used 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, a certain elastic force is applied to the electromagnet support 247 through the cylindrical compression spring 235, and the electromagnet support 247 can have a certain amount of up-down displacement space to realize self-adaptive adjustment of the up-down position;

One side of the electromagnet support 247 is fixedly provided with a joint bearing seat 238, a conical spiral spring 226 is arranged in the joint bearing seat 238, the conical spiral spring 226 is connected with a joint bearing shaft 237, the lower end of the joint bearing shaft 237 is fixedly connected with the electromagnet support 247, and a certain amount of horizontal swinging space can be reserved for the joint bearing shaft 237 through the conical spiral spring 226, so that the angle self-adaptive adjustment is realized.

A knuckle bearing sensor 240 is mounted to one side of the electromagnet support 247 to enable detection of position and angle information of the electromagnet 228.

The electromagnet 228 is fixedly connected to the lower end of the electromagnet support 247, and is capable of attracting a brake pad.

The upright post 202 is also provided with a valve plate mounting plate 231, and the valve plate mounting plate 231 is provided with a 2-bit cartridge valve 232 and a 4-bit cartridge valve 233.

The clamping platform 3 comprises a clamping workbench bottom plate 301 fixedly mounted at the upper end of the main frame 102, two mutually parallel clamping workbench side plates 303 are fixedly mounted at the upper part of the clamping workbench bottom plate 301 and are reinforced by a clamping workbench rib plate 302, a feeding guide rail mounting plate 343 is fixedly mounted at the upper end of the clamping workbench side plates 303, a feeding guide rail is fixedly mounted on the feeding guide rail mounting plate 343, a feeding sliding seat 332 is movably connected to the feeding guide rail 342, a feeding air cylinder fixing plate 330 is mounted at the rear end of the feeding guide rail mounting plate 343, a feeding air cylinder 329 is fixedly mounted on the feeding air cylinder fixing plate 330, a piston rod of the feeding air cylinder 329 is fixedly connected with the feeding sliding seat 332 through a rod end joint bearing 331, and the feeding sliding seat 332 is driven to move on the feeding guide rail through extension and shortening of the feeding air cylinder 329.

The feeding slide 332 is fixedly provided with a parallel opening and closing cylinder 308, two ends of the opening and closing flat cylinder are respectively connected 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 provided with a left clamping finger 307, the lower end of the right clamping finger fixing plate 344 is fixedly provided with a right clamping finger 345, and the left clamping finger 307 and the right clamping finger 345 are driven to move oppositely or reversely through the opening and closing flat cylinder so as to clamp a brake pad.

The upper end of the feeding slide seat 332 is fixedly provided with a pneumatic claw cylinder mounting plate 333, the pneumatic claw cylinder mounting plate 333 is provided with a trapezoid groove track plate 334, the trapezoid groove track plate 334 is movably connected with an adjusting arm 335, the other end of the adjusting arm 335 is connected with a pneumatic claw cylinder 311 through an adjusting arm clamping block 309, the lower end of a piston rod of the pneumatic claw cylinder 311 is fixedly provided with a pneumatic claw cylinder pressure head 312, and the pneumatic claw cylinder pressure head 312 is driven to move up and down through the pneumatic claw cylinder 311 so as to press a brake pad;

The upper ends of the two clamping workbench side plates 303 are fixedly provided with a workbench top plate 340, the upper ends of the workbench top plates 340 are fixedly connected with a workbench supporting plate 339 for placing brake pads, and the workbench top plate 340 is further provided with a first positioning stop 313 and a second positioning stop 341 for positioning the positions of the brake pads.

The lower edges of the left and right clamping fingers 307, 345 are on the same horizontal plane as the upper edge of the work support plate 339 to ensure clamping of the brake pads.

The clamping proximity switches 305 are respectively installed at positions of the clamping table side plates 303 close to the left clamping finger fixing plates 306 and the right clamping finger fixing plates 344, and can detect positions of the left clamping finger fixing plates 306 and the right clamping finger fixing plates 344 and whether to open or close.

The upper portion of the adjustment arm 335 is provided with a fixed handle 310, and the relative position of the adjustment arm 335 and the trapezoidal groove rail plate 334 can be fixed by rotating the fixed handle 310.

The upper end of one side of the clamping workbench bottom plate 301 is fixedly provided with a pushing mechanism mounting plate 326, the structural strength is enhanced through a clamping connecting plate 328, one side of the pushing mechanism mounting plate 326 is sequentially provided with a pushing air cylinder seat 324, a pushing mechanism fixing seat 325 and a pushing mechanism sliding block seat 327 from bottom to top, the upper end of the pushing air cylinder seat 324 is hinged with a pushing air cylinder 323, a piston rod of the pushing air cylinder 323 is fixedly connected with a pushing air cylinder joint 322, the pushing air cylinder joint 322 is hinged with a second connecting rod 321, the upper end of the second connecting rod 321 is hinged with a first connecting rod 320, the other end of the first connecting rod 320 is hinged with a push rod 316 through a pin shaft 318, the lower part of the push 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 connected with the clamping sliding block 315 in a sliding manner, one end of the pushing mechanism fixing seat 325 is hinged with the middle lower part of the second connecting rod 321, and the other end of the push rod 316 is fixedly connected with a pushing plate 314;

The pushing cylinder connector 322 is driven to move laterally outwards by the extension and shortening of the pushing cylinder 323, and the middle lower part of the second connecting rod 321 is hinged with the pushing mechanism fixing seat 325, so that the upper end of the second connecting rod 321 moves laterally inwards, and the push rod 316 is driven to move laterally inwards by the first connecting rod 320, so that the brake pad is pushed away from the work support plate 339 for unloading.

The lower edge of the pusher plate 314 is on the same horizontal plane as the upper edge of the work support plate 339, and can accurately push away the brake pads.

The numerical control drilling machine 4 is fixedly arranged on an X-axis bottom plate 401 at the upper part of the main frame 102, two parallel circular guide rails 425 with seats are fixedly arranged at the upper part of the X-axis bottom plate 401, an X-axis sliding block 402 is slidably arranged at the upper part of the circular guide rails 425 with seats, a first X-axis sliding plate 446 and a second X-axis sliding plate 443 are fixedly arranged at the upper part of the X-axis sliding block 402, an X-axis motor mounting plate 426 is arranged at one end of the X-axis bottom plate 401, an X-axis motor is arranged at the outer side of the X-axis motor mounting plate 426, an 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, a plum blossom coupler 432 is connected to the other end of the output shaft of the X-axis motor, an X-axis lead screw 434 is arranged on the X-axis bottom plate 401 through an X-axis lead screw bearing seat 433, and the X-axis lead screw 434 is positioned above the central axis of the X-axis bottom plate 401;

The X-axis screw 434 is in meshed connection 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 nut seat 447 comprises a first nut seat 447 connected with a first X-axis sliding plate 446 and a second nut seat 447 connected with a second X-axis sliding plate 443, a first screw nut 448 is arranged on one side of the first nut seat 447, a second screw nut 440 is arranged on one side of the second nut seat 447, threads of the first screw nut 448 and the second screw nut 440 are counter threads, and when the X-axis screw 434 rotates, the first screw nut 448 and the second screw nut 440 move in opposite directions;

An X-axis zeroing sensor bracket 449 is fixedly arranged on the X-axis bottom plate 401, and an X-axis proximity switch is arranged on the upper part of the X-axis zeroing sensor bracket 449 and can detect whether the X-axis sliding plate is zeroed.

A drag chain bracket 418 is mounted on the X-axis base plate 401.

The first drilling machine and the second drilling machine are fixedly arranged on the first X-axis sliding plate 446 and the second X-axis sliding plate 443, the first drilling machine and the second drilling machine comprise a first rotary drive 428 and a second rotary drive 429, one ends of the first rotary drive 428 and the second rotary drive 429 are connected with a rotary drive connecting block 420, the other end of the rotary drive connecting block 420 is connected with a rotary speed reducer 417, the other end of the rotary speed reducer 417 is connected with an X-axis rotary stepping motor 416, the lower end of the rotary drive connecting block 420 is connected with a rotary cylinder 419, and the gear in the rotary drive is driven to rotate through a rotary drive key sleeve 439 by the X-axis rotary stepping motor 416, so that the angle of the drilling machine is adjusted.

The lower ends of the first X-axis sliding plate 446 and the second X-axis sliding plate 443 are provided with a positioning sleeve 430 to fix the positions of the first X-axis sliding plate 446 and the second X-axis sliding plate 443.

The upper ends of the first rotary drive 428 and the second rotary drive 429 are rotatably connected with a first rotary table connecting disc 427 and a second rotary table connecting disc, the upper ends of the first X-axis sliding plate 446 and the second X-axis sliding plate 443 are respectively provided with a rotary drive zeroing sensor bracket 403, the rotary drive zeroing sensor bracket 403 is fixedly provided with a rotary spot switch 404, and corresponding positions on the first rotary table connecting disc 427 and the second rotary table connecting disc are respectively provided with a rotary zeroing detection plate 424 which can monitor whether the first rotary table connecting disc 427 and the second rotary table connecting disc return to zero;

The upper parts of the first turntable connecting plate 427 and the second turntable connecting plate are 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 rail pair, the inside of the linear guide rail pair is provided with a feeding servo motor and a ball screw, the ball screw is provided with a drill bit, and the feeding servo motor drives the drill bit to reciprocate on the linear guide rail pair through the ball screw;

The upper part of the power head clamping seat 414 is provided with a drill bushing feeding mechanism, the drill bushing feeding mechanism comprises a drill bushing sliding block 411, the upper part of the drill bushing sliding block 411 is connected with a drill bushing guide rail 410 in a sliding way, the upper part of the drill bushing 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 bushing cylinder 412 through a drill bushing cylinder 412 bracket, an output shaft of the drill bushing cylinder 412 is fixedly connected with the guide rail mounting plate 409 through a drill bushing cylinder 412 joint, and the drill bushing cylinder 412 drives the guide rail mounting plate 409 to move in the horizontal direction;

The guide rail mounting plate 409 is of an L-shaped structure, a fixed drill bushing 431 and a tool setting block 406 are fixedly arranged at the lower end of the suspension end of the guide rail mounting plate 409, and a magnet 405 is arranged on the tool setting block 406;

Because the drilling surface of the steel back is usually an inclined surface, a cutting component force for transversely pushing the turntable connecting disc to rotate can be generated, a backlash exists on the meshing gear of the turntable connecting disc reducing mechanism, and the drilling position can be greatly deviated due to the tiny movement of the turntable connecting disc, an auxiliary clamping mechanism is required to be designed to ensure that the turntable connecting disc is not displaced in the machining process.

The auxiliary clamping mechanism comprises a brake disc and a pneumatic butterfly brake 438, the pneumatic butterfly brake 438 is fixedly arranged on the X-axis sliding plate through a pneumatic butterfly brake mounting frame 437, the brake disc is fixedly arranged at the lower end of the turntable connecting disc and protrudes out of the outer edge of the turntable connecting disc, the brake disc is positioned inside the pneumatic butterfly brake 438, after the angle of the power head is adjusted in place, the pneumatic butterfly brake 438 acts to clamp the brake disc, so that tiny movement of the turntable connecting disc during drilling is prevented, and drilling precision is guaranteed.

The storage mechanism 1 consists of a material stack, an electric turntable, a hydraulic lifting mechanism, a detection sensor and the like. Eight stacks are evenly distributed along the rotation center of the turntable, each stack is provided with an adjustable positioning device, and a plurality of round upright posts 122 of the feed stacks are inserted into round holes in the bottom plate 120 of the stack frame so as to adapt to the positioning requirements of the steel backs of the brake blocks of different varieties.

Each stack can store 60-70 pieces of substitute processed steel backs, and eight stacks can meet the processing amount requirement of about 1 hour.

The turntable is fixed at the output end of the external tooth-shaped slewing bearing 112, the stepping motor drives the turntable to rotate through a two-stage speed reducing mechanism consisting of a speed reducer, a driving gear 113 and the external tooth slewing bearing 112, a hydraulic jacking mechanism is arranged on the frame, and after the turntable rotates in place, the hydraulic jacking mechanism acts to convey the steel back to an initial station for grabbing by a manipulator.

The storage mechanism 1 is provided with a zero return sensor 111, a no-material detection sensor and a top feeding position sensor, and is matched with an executing mechanism to realize continuous feeding of the steel back.

The double-shaft transfer manipulator 2 is used for transferring a steel back workpiece from a material taking station to a drilling processing station of the storage mechanism 1, and consists of a frame, an X-axis manipulator, a Y-axis manipulator, a floating electromagnetic chuck and the like, has 2 degrees of freedom, and can realize 2-dimensional motion in a plane.

The floating electromagnetic chuck is composed of a linear guide rail pair, a joint bearing, a spring assembly, an electromagnetic chuck and the like, so that the self-adaptive adjustment of the electromagnetic chuck can be realized, and the steel back can be more reliably adsorbed and grabbed. The design of the linear guide pair and the cylindrical compression spring 235 can realize the self-adaptive adjustment of the upper and lower positions of the electromagnetic chuck, and the design of the knuckle bearing and the conical spiral spring can realize the self-adaptive adjustment function of the angle of the electromagnetic chuck.

The numerical control drilling mechanism is a core mechanism of a flexible numerical control drilling system and consists of a clamping platform 3 and a numerical control drilling machine 4. The clamping platform 3 realizes the correct positioning and reliable clamping of the steel back workpiece, and the drilling system can realize the programmed adjustment of the distance and angle between two holes, so that the drilling system can be suitable for the die-free drilling processing of various steel backs.

The clamping platform 3 is composed of a frame, a positioning cylinder, a pressing cylinder, a parallel clamping mechanism, a feeding sliding seat 332, a blanking mechanism, a corresponding position detection sensor and the like, and is driven in a pneumatic mode, and the whole clamping platform 3 is provided with five cylinders.

The frame is a fixed foundation of each component structure and is formed by screwing a carbon steel plate, and is fixed on a platform of the main frame 102. The feeding slide seat mechanism pushes the parallel clamping mechanism and the air jaw cylinder 311 to move back and forth along the linear guide rail, so that the transferring manipulator can be avoided and the blanking is convenient.

The parallel clamping mechanism adopts a structure of a gear rack mechanism and a double piston, so that synchronous movement of the air claw is realized, and the clamping force is high, so that the steel back can be centered and clamped at the processing position.

The operation sequence is that after the manipulator puts down the steel back to be drilled, the positioning cylinder, the feeding slide 332 mechanism, the parallel clamping mechanism and the compacting cylinder sequentially operate to complete the positioning and clamping of the steel back. After the steel back drilling processing is finished, the pushing cylinder 323 acts to push the steel back to finish blanking action through the connecting rod mechanism.

The drilling system consists of an x-axis movement mechanism, a servo power head, a servo rotary table, a drill bushing feeding mechanism and an auxiliary clamping mechanism. The X-axis movement mechanism consists of a motor, a bidirectional ball screw, a linear guide rail pair and the like, and the two turntable mechanisms are respectively arranged on the first X-axis sliding plate 446 and the second X-axis sliding plate 443, and when the motor rotates, the bidirectional ball screw drives the first X-axis sliding plate 446 and the second X-axis sliding plate 443 to synchronously move in opposite directions;

The servo power head comprises a numerical control power head 415, a feeding servo motor, a drill sleeve cylinder 412 and a corresponding transmission mechanism, a spindle servo motor in the numerical control power head 415 drives a drill bit to rotate, cutting power is provided, reasonable cutting parameters are realized by setting the rotating speed of the spindle, after the drill bit is damaged, the cutting force is increased, current fed back to the spindle motor is suddenly changed, the damage of the drill bit can be detected by a method of monitoring the current change of the spindle servo motor, the feeding servo motor drives a ball screw arranged in the power head, so that a drill bit sleeve moves along a linear guide rail pair in a feeding way, and the drilling depth is controlled;

the power head is arranged on the turntable connecting disc, the turntable connecting disc drives the low-clearance helical gear speed reducing mechanism to drive the turntable connecting disc to do circular rotation through the X-axis rotary stepping motor 416 machine, so that the angle adjustment of the power head relative to the steel back is realized, and the turntable connecting disc is supported by adopting a precise crossed roller bearing and can bear larger radial, axial and overturning moment;

the drill bushing feeding mechanism is arranged on the turntable connecting disc and consists of a drill bushing rod, a drill bushing feeding cylinder 329 and a zero-clearance linear guide rail pair, and the cylinder drives the drill bushing rod to press the drill bushing rod on the arc surface of the steel backing during working, so that the drill bushing is ensured not to deviate in position during drilling of the arc surface, and the die-free drilling of the steel backing of the brake block is realized.

Because the drilling surface of the steel back is usually an inclined surface, a cutting component force for transversely pushing the turntable connecting disc to rotate can be generated, a backlash exists on the meshing gear of the turntable connecting disc reducing mechanism, and the drilling position can be greatly deviated due to the tiny movement of the turntable connecting disc, an auxiliary clamping mechanism is required to be designed to ensure that the turntable is not displaced in the machining process.

The auxiliary clamping mechanism consists of a brake disc and a pneumatic butterfly brake 438, the brake disc is fixed on the turntable connecting disc, the turntable connecting disc rotates, the brake is fixed on the X-axis sliding plate, after the angle of the power head is adjusted in place, the brake acts to clamp the brake disc, so that the tiny movement of the turntable connecting disc during drilling is prevented, and the drilling precision is ensured.

The specific parameters are as follows:

The flexible numerical control drilling system suitable for the brake pad steel back piece is independently researched and developed aiming at the problems of labor intensity, low production efficiency, difficulty in controlling product quality and the like in the manufacturing process of the automobile brake pad, and based on the system, equipment such as a punching machine, a loading and unloading robot, automatic detection, surface treatment and the like are integrated. The flexible numerical control drilling system for the brake block steel back piece is developed by combining key technologies such as robot motion control, production flow automation and intellectualization, flexible production line technology and the like, and the whole flow flexible automatic production line for the brake block steel back piece is built integrally.

The main shaft rotating speed of the brake block flexible numerical control drilling system is 50-1500 r/min, the feeding speed is 2-30m/min, and the indexing accuracy is +/-0.001 degrees.

The production efficiency of the system is more than or equal to 700 pieces/hour, the adaptive specification is more than or equal to 600 pieces, and the continuous production qualification rate is more than or equal to 99 percent.

The production efficiency of the brake block whole-flow flexible intelligent production line system is more than or equal to 600 pieces/hour, and the product qualification rate of the production line is more than or equal to 99 percent.

Although embodiments of the present 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 therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The flexible numerical control drilling device for the brake pad is characterized by comprising a main frame, wherein the upper part of the main frame is provided with

The storage mechanism is used for storing and providing brake pads;

the numerical control drilling machine is used for drilling the brake pad;

The material storage mechanism comprises a slewing bearing mounting plate, the upper part of the slewing bearing mounting plate is rotatably connected with a slewing bearing, a turntable is fixedly arranged on the upper part of the slewing bearing, a slewing stepping motor is arranged on the lower part of the slewing bearing mounting plate, an output shaft of the slewing stepping motor penetrates through the slewing bearing mounting plate and extends to the upper part of the slewing stepping motor, a driving gear is connected to the upper end of the output shaft of the slewing stepping motor, and the driving gear is meshed with threads on an outer vertical surface of the slewing bearing;

A turntable zeroing detection plate is arranged on the outer side of the turntable, and a zeroing sensor is arranged at a corresponding position of the slewing bearing mounting plate;

The rotary hydraulic cylinder is arranged at the lower end of the rotary support mounting plate, a piston rod of the rotary hydraulic cylinder penetrates through the rotary support mounting plate and extends to the upper side of the rotary support mounting plate, a rotary cylinder head is fixedly arranged at the upper end of the piston rod of the rotary hydraulic cylinder, and a through hole is formed in a position, corresponding to the rotary cylinder head, of the rotary table;

the lower part of the turntable is provided with a plurality of rotary screws at the same interval, and the corresponding position of the rotary support mounting plate is provided with a second rotary proximity switch;

The upper part of the turntable is provided with a plurality of stacks in a ring-shaped array form, each stack comprises two stack frame bottom plates, the upper ends of the two stack frame bottom plates are fixedly provided with stack round columns, the upper ends of the two stack frame bottom plates are fixedly provided with stack frame rib plates, and the other sides of the stack frame rib plates are fixedly connected with the stack round columns;

and a plurality of material cushion blocks are fixedly arranged on the turntable and are respectively positioned between the material stack frame bottom plate and the material stack main bottom plate.

2. The flexible numerical control drilling device for the brake pad according to claim 1, wherein a water tank is fixedly arranged at the upper part of the main frame, and the double-shaft transfer manipulator is arranged in the water tank;

3. The flexible numerical control drilling device for the brake pad according to claim 2, wherein the floating electromagnetic chuck comprises a second guide rail fixedly arranged in the lower end of the module main support, the electromagnet 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 electromagnet support, a joint bearing seat is fixedly arranged on one side of the electromagnet support, a conical spiral spring is arranged in the joint bearing seat, the conical spiral spring is connected with a joint bearing shaft, the electromagnet support is fixedly connected to the lower end of the joint bearing shaft, and the electromagnet is fixedly connected to the lower end of the electromagnet support.

4. The flexible numerical control drilling device for the brake block is characterized in that the clamping platform comprises a clamping workbench bottom plate fixedly arranged at the upper end of a main frame, two mutually parallel clamping workbench side plates are fixedly arranged at the upper part of the clamping workbench bottom plate, a feeding guide rail mounting plate is fixedly arranged at the upper end of the clamping workbench side plates, a feeding guide rail is fixedly arranged on the feeding guide rail mounting plate, a feeding sliding seat is movably connected to the feeding guide rail, a parallel opening and closing air cylinder is fixedly arranged on the feeding sliding seat, a feeding air cylinder fixing plate is arranged at the rear end of the feeding guide rail mounting plate, a feeding air cylinder is fixedly arranged on the feeding air cylinder fixing plate, and a piston rod of the feeding air cylinder is fixedly connected with the feeding sliding seat;

The upper end of the feeding slide seat is fixedly provided with an air claw cylinder mounting plate, the air claw cylinder mounting plate is provided with a trapezoid groove track plate, the trapezoid 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 a piston rod of the gas claw cylinder is fixedly provided with a gas claw cylinder pressure head;

5. The flexible numerical control drilling device for the brake pad according to claim 4, wherein the upper end of one side of the bottom plate of the clamping workbench is fixedly provided with a pushing mechanism mounting plate, one side of the pushing mechanism mounting plate is sequentially provided with a pushing cylinder seat, a pushing mechanism fixing seat and a pushing mechanism sliding block seat from bottom to top, the upper end of the pushing cylinder seat is hinged with a pushing cylinder, a 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 push rod, the lower part of the push rod is fixedly provided with a clamping guide rail, the upper end of the pushing mechanism sliding block seat is fixedly provided with a clamping sliding block, the clamping guide rail is connected with the clamping sliding block in a slidable manner, and one end of the pushing mechanism fixing seat is hinged with the middle lower part of the second connecting rod;

the other end of the push rod is fixedly connected with a pushing plate;

6. The flexible numerical control drilling device for the brake pad according to claim 1, wherein the numerical control drilling machine is fixedly arranged on an X-axis bottom plate at the upper part of a main frame, two parallel circular guide rails with seats are fixedly arranged at the upper part of the X-axis bottom plate, an X-axis sliding block is slidably arranged at the upper part of the circular guide rails with seats, an X-axis sliding plate is fixedly arranged at the upper part of the X-axis sliding block, an X-axis motor mounting plate is arranged at one end of the X-axis bottom plate, an X-axis motor is arranged at the outer side of the X-axis motor mounting plate, an 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 coupler is connected to the other end of the output shaft of the X-axis motor, the X-axis lead screw is positioned above a central axis of the X-axis bottom plate, a nut seat is connected to the upper end of the nut seat in a meshed manner, an X-axis zero-return sensor bracket is fixedly arranged on the X-axis bottom plate, and a zero-return sensor bracket is arranged on the X-axis zero-return sensor bracket and is close to the X-axis bracket.

7. The flexible numerical control drilling device for the brake pad according to claim 6, wherein the drilling machine is fixedly arranged on the X-axis sliding plate and 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 speed reducer, the other end of the rotary speed reducer is connected with an X-axis rotary stepping motor, and the lower end of the rotary drive connecting block is connected with a rotary cylinder;

The guide rail mounting plate is of an L-shaped structure, a tool setting block is fixedly arranged at the lower end of the suspension end of the guide rail mounting plate, and a magnet is arranged on the tool setting block;

The X-axis sliding plate is 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 arranged on the X-axis sliding plate, the brake disc is fixedly arranged at the lower end of the turntable connecting plate and protrudes out of the outer edge of the turntable connecting plate, and the brake disc is positioned in the pneumatic butterfly brake.