Brake backing plate drilling method and brake backing plate drilling device

Abstract

The application discloses a brake back plate drilling method and a brake back plate drilling device. The brake back plate drilling method comprises the following steps: dividing holes of a brake back plate into at least two deep hole machining stages, and respectively machining the holes of the brake back plate with different drilling depths in each deep hole machining stage; the drilling depths of the multiple deep hole machining stages are gradually increased in sequence; and the holes of the multiple deep hole machining stages are respectively machined by different drilling machines. The brake back plate drilling device comprises a rack, a standby station, a center hole machining station, a deep hole machining station, a blanking station and a workpiece transmission structure. The standby station is provided with a workpiece stack structure. The first machining station is provided with a first drilling machine. The deep hole machining station has at least two deep hole machining stations. Each deep hole machining station is provided with a second drilling machine. The workpiece transmission structure is used for sequentially moving the workpiece through the standby station, the center hole machining station, the multiple deep hole machining stations and the blanking station. The scheme can greatly reduce the waste rate of workpiece machining and improve the machining efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to brake back plate processing equipment technical field, especially brake back plate drilling method and brake back plate drilling device. BACKGROUND

[0002] The brake back plate is a key and important execution element in the brake system of the automobile (including electric vehicle), and many types thereof need to process two holes with a diameter of 2.2 mm on the curved cross section, and the length is 8 to 12 mm according to the requirements of different products. The technical requirements of the two holes include the included angle, symmetry, center distance, center degree on the cross section, hole diameter and hole depth, and the precision is more than 7 to 8 levels.

[0003] The current production equipment is the first and second generation automatic drilling machine, and the following deficiencies still exist:

[0004] 1) Some tear strips often appear on the punching surface of the product, and if it is near the hole center, the small diameter drill bit is likely to deviate from the center due to insufficient rigidity, which not only causes the deviation of the hole position, but also easily causes the drill bit to be broken between the drill sleeve and the workpiece due to the rotation eccentricity.

[0005] 2) The hole depth of many products is required to be greater than 12 mm or more, and the practical experience is that the deep drilling is easy to fatigue and damage the drill bit, greatly reducing the service life.

[0006] 3) The existing equipment takes too long to process such relatively long holes, and the production efficiency is greatly reduced. SUMMARY

[0007] The technical problem to be solved by the present application is to provide a brake back plate drilling method and a brake back plate drilling device to solve one or more technical problems in the prior art and at least provide a beneficial choice or create conditions.

[0008] The solution to the technical problem of the present application is:

[0009] The brake back plate drilling method divides the hole of the brake back plate into at least two deep hole processing stages, each of which processes the hole of the brake back plate with different drilling depths, and the drilling depths of the multiple deep hole processing stages are gradually increased in sequence, and the holes of the multiple deep hole processing stages are processed by different drilling machines.

[0010] Through the above technical solution, the deep hole of the product is processed through multiple deep hole processing stages, and the processing mode of dividing the multiple deep hole processing stages is beneficial to increase the service life of the drill bit. The present application can greatly reduce the scrap rate of workpiece processing.

[0011] As a further improvement of the above technical solution, the two adjacent deep hole machining stages simultaneously process different brake back plates.

[0012] Through the above technical solution, the processing efficiency of the product can be greatly improved (the drilling time, which is the most time-consuming, is directly reduced).

[0013] The brake back plate drilling device applies the brake back plate drilling method as described above, and the brake back plate drilling device comprises:

[0014] A rack;

[0015] A standby station provided with a workpiece stacking structure;

[0016] A center hole machining station provided with at least two first drilling machines, the first drilling machines being installed on the rack;

[0017] A deep hole machining station, the deep hole machining station having at least two deep hole machining stations; each deep hole machining station is provided with at least two second drilling machines, and the second drilling machines are installed on the rack;

[0018] A blanking station;

[0019] A workpiece transmission structure for sequentially moving the workpiece through the standby station, the center hole machining station, the plurality of deep hole machining stations, and the blanking station.

[0020] Through the above technical solution, the deep hole of the product is processed through the plurality of deep hole machining stations, and the second drilling machines on the plurality of deep hole machining stations respectively process the same hole in sections, that is, in two stages, which not only helps to increase the service life of the drill bit, but also greatly improves the processing efficiency of the product (directly reduces the most time-consuming drilling time by half). The use of the present solution can greatly reduce the scrap rate of workpiece processing and improve the processing efficiency.

[0021] As a further improvement of the above technical solution, the workpiece stacking structure comprises a stacking material placing structure and a workpiece pushing assembly; the stacking material placing structure is fixedly installed on the rack; the workpiece pushing assembly is arranged below the stacking material placing structure, and the workpiece pushing structure comprises a pushing driving member and a pushing piece, the pushing driving member is fixedly installed on the rack, and the pushing driving member drives the pushing piece to move close to or away from the workpiece transmission structure.

[0022] Through the above technical solution, the workpieces are stacked from bottom to top, and the lowermost workpiece is pushed out by the workpiece pushing assembly, and the upper workpieces will move downward due to the action of gravity and be pushed out in the subsequent processing process.

[0023] As a further improvement of the above technical solution, the workpiece conveying structure comprises a reciprocating turntable, a workpiece clamping jaw, a clamping jaw lifting piece and a reciprocating driving piece; the reciprocating turntable is rotationally connected with the rack, the reciprocating driving piece is installed on the rack, the reciprocating driving piece drives the reciprocating turntable to reciprocate, the workpiece clamping jaw is installed on the reciprocating turntable, and the clamping jaw lifting piece drives the workpiece clamping jaw to move up and down.

[0024] Through the above technical solution, the function of the reciprocating turntable is to convey, which is not directly related to the positioning and machining of the workpiece, that is, the precision requirement of the turntable can be appropriately reduced, greatly simplifying its structure. In addition, because the reciprocating turntable adopts reciprocating swing rotary motion, the pipe and wire connection on the turntable can adopt a straight hose connection form, and more auxiliary mechanisms can be added without worrying about the connection problem.

[0025] As a further improvement of the above technical solution, the spacing between two adjacent stations of the workpiece station, the center hole machining station, the plurality of deep hole machining stations and the blanking station is the same; the number of workpiece clamping jaws is set to be multiple, and the spacing of the plurality of workpiece clamping jaws is the same.

[0026] As a further improvement of the above technical solution, the number of the workpiece station, the center hole machining station, the plurality of deep hole machining stations and the blanking station is set to be a first number, the number of the workpiece clamping jaw is set to be a second number, the second number is less than the first number, and the difference between the first number and the second number is one.

[0027] As a further improvement of the above technical solution, the blanking station is provided with a blanking slide and a blanking pushing piece, the blanking slide is inclined, and the two ends of the blanking slide are respectively set as high ends and low ends, and the blanking pushing piece drives the workpiece to move from the high end to the low end.

[0028] As a further improvement of the above technical solution, the rack is provided with a first scrap baffle, and the workpiece conveying structure is provided with a second scrap baffle.

[0029] Through the above technical solution, the first scrap baffle and the second scrap baffle are used to block the metal scraps generated by drilling, so as to avoid the metal scraps running around.

[0030] As a further improvement of the above technical solution, the rack is provided with an arc-shaped guide groove, the lower end of the first drilling machine and the second drilling machine is provided with an arc-shaped guide block, the arc-shaped guide block is installed in the arc-shaped guide groove, and the arc-shaped guide block and the arc-shaped guide groove are in sliding connection.

[0031] By the technical scheme, the arc-shaped guide groove and the arc-shaped guide block are used for guiding the first drilling machine and the second drilling machine, so that the first drilling machine and the second drilling machine are adjusted along the arc shape to adapt to the arc of the brake pad.

[0032] The beneficial effects of the present application are that the waste rate of workpiece processing can be greatly reduced, and the processing efficiency can be improved.

[0033] The present application is used for brake back plate processing equipment technical field. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly described below. Obviously, the described drawings are only a part of the embodiments of the present application, not all embodiments, and those skilled in the art can obtain other design schemes and drawings according to these drawings without creative labor.

[0035] Figure 1 is the overall structure schematic diagram of the embodiment of the present application;

[0036] Figure 2 is the overall structure schematic diagram of the workpiece stack structure of the embodiment of the present application;

[0037] Figure 3 is the overall structure schematic diagram of another angle of the workpiece stack structure of the embodiment of the present application;

[0038] Figure 4 is the overall structure schematic diagram of the workpiece transmission structure of the embodiment of the present application;

[0039] Figure 5 is the overall structure schematic diagram of the first drilling machine of the embodiment of the present application.

[0040] In the figure, 100, rack; 101, to-be-processed position; 102, center hole processing position; 103, deep hole processing position; 104, blanking position; 110, first chip baffle; 120, arc-shaped guide groove; 200, workpiece transmission structure; 210, workpiece clamping jaw; 211, first clamping jaw; 212, second clamping jaw; 213, clamping jaw connecting rod; 214, clamping jaw reset piece; 220, reciprocating turntable; 230, reciprocating driving piece; 240, clamping jaw lifting piece; 250, second chip baffle; 300, workpiece stacking structure; 310, workpiece front pushing assembly; 311, front pushing piece; 312, front pushing driving piece; 320, stacking material placing structure; 321, stacking limiting rod; 322, workpiece groove plate; 323, workpiece limiting structure; 324, workpiece anti-falling piece; 410, first drilling machine; 420, first jig; 510, second drilling machine; 520, second jig; 610, blanking pushing piece; 620, blanking slide; 700, arc-shaped guide block. DETAILED DESCRIPTION

[0041] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in combination with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application. In addition, all the coupling / connection relationships mentioned in the text do not mean that the components are directly connected, but that a better coupling structure can be formed by adding or reducing coupling auxiliary components according to the specific implementation. The technical features in the present application can be combined interactively without conflict.

[0042] REFERENCE Figures 1 to 5 , brake back plate drilling device, including rack 100, to-be-processed position 101, center hole processing position 102, deep hole processing position 103, blanking position 104, workpiece transmission structure 200.

[0043] The rack 100 is fixedly connected with the first chip baffle 110.

[0044] The workpiece transmission structure 200 comprises a workpiece clamping jaw 210, a reciprocating turntable 220, a reciprocating driving piece 230 and a clamping jaw lifting piece 240.

[0045] The reciprocating rotating disc 220 is rotationally connected with the rack 100. The clamping jaw lifting piece 240 is fixedly installed at the lower end of the reciprocating rotating disc 220. The workpiece clamping jaw 210 is installed on the reciprocating rotating disc 220. The reciprocating rotating disc 220 is further fixed with a second scrap baffle 250, which comprises two flat plates and an arc-shaped plate, the two flat plates are respectively arranged at two ends of the arc-shaped plate, and the flat plates are integrally formed with the arc-shaped plate. The second scrap baffle 250 is used for blocking the metal scraps generated by drilling to avoid the metal scraps running around.

[0046] In the embodiment, the number of the workpiece clamping jaws 210 is set to a second number, and the number of the workpiece clamping jaws 210 is set to four. Two workpiece clamping jaws 210 form a clamping jaw group, and each clamping jaw group is driven to move up and down by a clamping jaw lifting piece 240. Specifically, the output end of the clamping jaw lifting piece 240 is fixedly connected with the clamping jaw connecting rod 213.

[0047] In the embodiment, the workpiece clamping jaw 210 comprises a first clamping jaw 211 and a second clamping jaw 212, the first clamping jaw 211 and the second clamping jaw 212 are slidingly connected, the first clamping jaw 211 is fixedly connected with the clamping jaw connecting rod 213, the second clamping jaw 212 is slidingly connected with the reciprocating rotating disc 220, and the second clamping jaw 212 is provided with a clamping jaw resetting piece 214 between the reciprocating rotating disc 220. The clamping jaw resetting piece 214 makes the second clamping jaw 212 have a downward movement trend after being lifted. The second clamping jaw 212 is arranged above the first clamping jaw 211, and a clamping space is formed between the first clamping jaw 211 and the second clamping jaw 212. When the clamping jaw lifting piece 240 works, the distance between the first clamping jaw 211 and the second clamping jaw 212 changes until the first clamping jaw 211 and the second clamping jaw 212 are in abutment with the workpiece to complete the clamping of the workpiece.

[0048] The reciprocating driving piece 230 is provided in a straight line driving structure. Specifically, in the embodiment, the reciprocating driving piece 230 is provided in a straight line cylinder. The reciprocating driving piece 230 is provided with a connecting end and a driving end. The connecting end is hingedly connected with the rack 100, and the driving end is hingedly connected with the reciprocating rotating disc 220. The hinging point of the reciprocating driving piece 230 and the reciprocating rotating disc 220 is eccentrically arranged. The reciprocating driving piece 230 drives the reciprocating rotating disc 220 to reciprocate, so as to drive the workpiece clamping jaw 210 to reciprocate.

[0049] The standby station 101, the center hole processing station 102, the deep hole processing station 103 and the blanking station 104 are arranged around the workpiece transmission structure 200. The distance between any two adjacent stations of the standby station 101, the center hole processing station 102, the deep hole processing station 103 and the blanking station 104 is the same.

[0050] The standby station 101 is provided with a workpiece stacking structure 300, which comprises a workpiece pushing assembly 310 and a stacking material placing structure 320.

[0051] The stacking material placing structure 320 is fixedly installed on the rack 100, and comprises a plurality of stacking limiting rods 321, a workpiece groove plate 322, and a workpiece limiting structure 323.

[0052] The workpiece groove plate 322 is fixedly connected with the rack 100, and the middle part of the workpiece groove plate 322 is provided with a through groove corresponding to the shape of the brake pad, which penetrates the workpiece groove plate 322 in the up-down direction. The stacking limiting rods 321 are arranged above the workpiece groove plate 322, and are adjustably arranged with the workpiece groove plate 322 through a strip-shaped hole-screw structure, so that the plurality of stacking limiting rods 321 can be adjusted according to the actual shape of the brake pad to adapt to different workpieces.

[0053] The workpiece limiting structure 323 is fixedly connected with the rack 100, and is arranged below the workpiece groove plate 322 and on the side of the workpiece groove plate 322 close to the workpiece conveying structure 200. The plurality of stacking limiting rods 321 are arranged according to the shape of the brake pad to limit the four corners of the brake pad, and the brake pad is stacked and placed between the four stacking limiting rods 321 in the up-down direction.

[0054] The stacking material placing structure 320 is also provided with two workpiece anti-falling devices 324, which are arranged as linear cylinders, and are arranged on both sides of the workpiece groove plate 322 and above the workpiece groove plate 322. The workpiece anti-falling device 324 is arranged as a linear cylinder.

[0055] The stacking material placing structure 320 is arranged above the workpiece pushing assembly 310. The workpiece pushing assembly 310 comprises a pushing member 311 and a pushing driving member 312, and the pushing driving member 312 is arranged as a linear cylinder. The housing of the pushing driving member 312 is fixedly connected with the rack 100, and the output end of the pushing driving member 312 is connected with the pushing member 311. The pushing driving member 312 drives the pushing member 311 to move close to or away from the workpiece conveying structure 200. The pushing member 311 is used to push the workpiece towards the workpiece conveying structure 200, so as to prepare for the subsequent clamping step of the workpiece clamping jaw 210. When the pushing driving member 312 drives the pushing member 311 to move forward, the two workpiece anti-falling devices 324 work to clamp the workpiece above the workpiece to be pushed forward, so as to avoid the rear side of the workpiece above from falling and affecting the normal work of the pushing member 311.

[0056] The number of center hole processing positions 102 is set to one, and two first drilling machines 410 and a first jig 420 are arranged at the center hole processing position 102. The first drilling machines 410 are used for the step of drilling a center hole in the brake pad. In other embodiments, three first drilling machines 410 can be arranged at the center hole processing position 102, and the number of center hole processing positions 102 can be set to three or more to meet the production requirements of the brake pad. The first jig 420 is arranged on the side of the first drilling machine 410 close to the workpiece conveying structure 200. The first jig 420 is used for positioning and pressing the brake pad to prevent the brake pad from shifting during drilling. The rack 100 is provided with arc-shaped guide grooves 120. The number of arc-shaped guide grooves 120 is set to two. The two arc-shaped guide grooves 120 are concentrically arranged and have different diameters, so that the two arc-shaped guide grooves 120 are arranged in parallel. The lower end of the first drilling machine 410 is fixedly connected with an arc-shaped guide block 700. The arc-shaped guide block 700 is arranged in the arc-shaped guide groove 120 and is in sliding connection with the arc-shaped guide groove 120. The arc-shaped guide block 700 and the arc-shaped guide groove 120 guide the first drilling machine 410, so that the first drilling machine 410 is adjusted along the arc to adapt to the curvature of the brake pad.

[0057] The number of deep hole processing positions 103 is set to two (in other embodiments, the number of deep hole processing positions 103 can also be set to three or more). Two second drilling machines 510 and a second jig 520 are arranged at the deep hole processing position 103. In other embodiments, the number of second drilling machines 510 arranged at the deep hole processing position 103 can be three or more to meet the requirements of the number of holes drilled in the brake pad. The second drilling machine 510 is used for drilling holes in the brake pad. The multiple second drilling machines 510 of the two deep hole processing positions 103 perform step-by-step operations on the same hole in multiple times, which is beneficial to increase the service life of the drill bit and greatly improve the processing efficiency of the product. The lower end of the second drilling machine 510 is also fixedly connected with an arc-shaped guide block 700.

[0058] The blanking station 104 is provided with a blanking pushing member 610 and a blanking slide 620. The blanking pushing member 610 is mounted on the reciprocating turntable 220. The blanking pushing member 610 is arranged as a linear cylinder. The output end of the blanking pushing member 610 is fixedly connected with a pushing plate. The pushing plate is used for pushing the workpiece. The blanking slide 620 is fixedly mounted on the rack 100. The blanking slide 620 is arranged obliquely. The two ends of the blanking slide 620 are respectively arranged as high ends and low ends. The blanking pushing member 610 is arranged on the side of the high end away from the low end. The blanking pushing member 610 drives the workpiece to move to the blanking slide 620. Then, the workpiece moves from the high end to the low end and finally slides from the blanking slide 620 to the workpiece basket.

[0059] Workpiece by the workpiece stack structure 300 automatic ladder separation, the lowest brake pad is pushed to the workpiece transmission structure 200 movement, and ultimately by the workpiece limiting structure 323 limit, waiting for subsequent procedures. The first workpiece jaw 210 of the first group of jaw group on the reciprocating turntable 220 clamps the workpiece in the workpiece station 101, lifts and transports the workpiece to the center hole processing station 102 (the processing station is specially used for center hole processing to exclude the influence of tearing), while the second workpiece jaw 210 of the first group of jaw group synchronously clamps, lifts and transports the processed workpiece in the center hole processing station 102 to the first deep hole processing station 103 (the processing station is specially used for processing the front half of the hole, about more than half of the hole depth). Synchronously, the first workpiece jaw 210 of the second group of jaw group on the reciprocating turntable 220 clamps, lifts and transports the processed workpiece in the first deep hole processing station 103 to the second deep hole processing station 103 (the processing station is specially used for processing the back half of the hole), while the second workpiece jaw 210 of the second group of jaw group synchronously clamps, lifts and moves the processed workpiece in the second deep hole processing station 103 to the blanking station 104. Then the reciprocating drive 230 drives the reciprocating turntable 220 to reset, and then the blanking pusher 610 on the reciprocating turntable 220 drives the push plate to push the workpiece on the blanking station 104 into the blanking slide 620 to complete the workpiece output.

[0060] Specifically, it is:

[0061] Workpiece by the workpiece stack structure 300 automatic ladder separation, the lowest brake pad is pushed to the workpiece transmission structure 200 movement, and ultimately by the workpiece limiting structure 323 limit, waiting for subsequent procedures. The first workpiece jaw 210 of the first group of jaw group on the reciprocating turntable 220 clamps the workpiece in the workpiece station 101, lifts and transports the workpiece to the center hole processing station 102 (the processing station is specially used for center hole processing to exclude the influence of tearing), while the second workpiece jaw 210 of the first group of jaw group synchronously clamps, lifts and transports the processed workpiece in the center hole processing station 102 to the first deep hole processing station 103 (the processing station is specially used for processing the front half of the hole, about more than half of the hole depth). Synchronously, the first workpiece jaw 210 of the second group of jaw group on the reciprocating turntable 220 clamps, lifts and transports the processed workpiece in the first deep hole processing station 103 to the second deep hole processing station 103 (the processing station is specially used for processing the back half of the hole), while the second workpiece jaw 210 of the second group of jaw group synchronously clamps, lifts and moves the processed workpiece in the second deep hole processing station 103 to the blanking station 104. Then the reciprocating drive 230 drives the reciprocating turntable 220 to reset, and then the blanking pusher 610 on the reciprocating turntable 220 drives the push plate to push the workpiece on the blanking station 104 into the blanking slide 620 to complete the workpiece output.

[0062] The core of the action sequence is the reciprocating turntable 220, and the plurality of workpiece jaws 210 installed on the reciprocating turntable 220. The plurality of workpiece jaws 210 can clamp, lift and transport the workpieces in the first four stations synchronously to the next station. It should be emphasized that the function of the reciprocating turntable 220 is to transport, and it has no direct connection with the positioning and processing of the workpiece, that is, the precision requirement of the turntable can be appropriately reduced, greatly simplifying its structure. In addition, because the reciprocating turntable 220 adopts reciprocating swing rotary motion, the pipe and wire connection on the turntable can adopt a straight hose connection form, and more auxiliary mechanisms can be added without worrying about the connection problem.

[0063] It also needs to be explained that compared with the existing equipment, the workpiece jaw 210 and the number of stations are more, but the reciprocating action can still be consistent. The return stroke of the reciprocating turntable 220 is performed synchronously during the drilling process, and there is no waste of any idle stroke.

[0064] The preferred embodiments of the present application have been disclosed with specific reference to a preferred embodiment. A person with ordinary skill in the art understands that variations in, or replacements for, the preferred embodiments described herein can be made without departing from the spirit of the application. These equivalent variations or replacements are also encompassed within the scope of the claims defined below.

Claims

1. Brake backing plate drilling apparatus, characterized by: The brake back plate drilling device comprises a rack, a workpiece standby station provided with a workpiece stacking structure, a center hole processing station provided with at least two first drilling machines, each of which is installed on the rack, a deep hole processing station provided with at least two second drilling machines, each of which is installed on the rack, a blanking station, the intervals between two adjacent stations of the workpiece standby station, the center hole processing station, the deep hole processing stations and the blanking station are the same, a workpiece transmission structure for sequentially moving the workpiece through the workpiece standby station, the center hole processing station, the deep hole processing stations and the blanking station, the workpiece transmission structure comprises a reciprocating turntable, a workpiece clamp jaw, a clamp jaw lifting piece and a reciprocating driving piece, the reciprocating turntable is rotationally connected with the rack, the reciprocating driving piece is installed on the rack, the reciprocating driving piece drives the reciprocating turntable to reciprocate, the workpiece clamp jaw is installed on the reciprocating turntable, and the clamp jaw lifting piece drives the workpiece clamp jaw to move up and down, the workpiece clamp jaw comprises a first clamp jaw and a second clamp jaw, the first clamp jaw is located above the second clamp jaw, the number of the workpiece clamp jaw is set to be multiple, the intervals between the multiple workpiece clamp jaws are the same, two workpiece clamp jaws form a clamp jaw group, two first clamp jaws in each clamp jaw group are relatively fixed through a clamp jaw connecting rod, the clamp jaw connecting rod is fixed with an output end of the clamp jaw lifting piece, the holes of the brake back plate are divided into at least two deep hole processing stages, each deep hole processing stage processes the holes of the brake back plate to different drilling depths, the drilling depths of the multiple deep hole processing stages gradually increase in sequence, the holes of the multiple deep hole processing stages are processed by different drilling machines, and adjacent two deep hole processing stages simultaneously process different brake back plates.

2. The brake backing plate drilling apparatus of claim 1, wherein: The workpiece stacking structure comprises a stacking material placing structure and a workpiece pushing assembly, the stacking material placing structure is fixedly installed on the rack, and the workpiece pushing assembly is arranged below the stacking material placing structure, the workpiece pushing structure comprises a pushing driving piece and a pushing piece, the pushing driving piece is fixedly installed on the rack, and the pushing driving piece drives the pushing piece to move close to or away from the workpiece transmission structure.

3. The brake backing plate drilling apparatus of claim 1, wherein: The number of the workpiece standby station, the center hole processing station, the deep hole processing stations and the blanking station is set to be a first number, the number of the workpiece clamp jaw is set to be a second number, the second number is less than the first number, and the difference between the first number and the second number is one.

4. The brake backing plate drilling apparatus of claim 1, wherein: The blanking station is provided with a blanking slide and a blanking pushing piece, the blanking slide is arranged obliquely, two ends of the blanking slide are respectively provided with a high end and a low end, and the blanking pushing piece drives the workpiece to move from the high end to the low end.

5. The brake backing plate drilling apparatus of claim 1, wherein: The rack is provided with a first scrap baffle, and the workpiece transmission structure is provided with a second scrap baffle.

6. The brake backing plate drilling apparatus of claim 1, wherein: The rack is provided with an arc-shaped guide groove, and the lower ends of the first drilling machine and the second drilling machine are provided with arc-shaped guide blocks which are installed in the arc-shaped guide groove and are in sliding connection with the arc-shaped guide groove.

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