CN219234024U - Drilling machine for brake back plate - Google Patents
Drilling machine for brake back plate Download PDFInfo
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- CN219234024U CN219234024U CN202223554397.8U CN202223554397U CN219234024U CN 219234024 U CN219234024 U CN 219234024U CN 202223554397 U CN202223554397 U CN 202223554397U CN 219234024 U CN219234024 U CN 219234024U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a drilling machine for a brake back plate, which comprises: a frame; a waiting station, wherein the waiting station is provided with a workpiece stacking structure; the central hole machining station is provided with at least two first drilling machines, and the first drilling machines are arranged on the rack; the deep hole processing station is provided with at least two deep hole processing stations; each deep hole processing station is provided with at least two second drilling machines, and the second drilling machines are arranged on the frame; a blanking station; the workpiece conveying structure is used for enabling workpieces to sequentially pass through the waiting station, the center hole processing station, the deep hole processing stations and the blanking station. By adopting the scheme, the rejection rate of workpiece processing can be greatly reduced, and the processing efficiency can be improved.
Description
Technical Field
The utility model relates to the technical field of brake back plate processing equipment, in particular to a brake back plate drilling machine.
Background
The brake back plate is an extremely critical and important executive component in the brake system of an automobile (comprising an electric vehicle), and many products need to process two holes with the diameter phi of 2.2mm on the curved section of the brake back plate, and the length of the brake back plate is different from 8 mm to 12mm according to the requirements of different products. The technical requirements are as follows: the precision of the included angle between the two holes, the symmetry, the center distance of the holes, the respective center degree on the section, the aperture, the hole depth and the like are all above 7 to 8 levels.
The production equipment used at present is a first-generation and a second-generation automatic drilling machine, and the following defects still exist:
1) Some tearing strips are often generated on the blanking surface of the product, and if the tearing strips are positioned near the hole center, the bit with the extremely thin small diameter is extremely likely to deviate from the center of the bit due to insufficient rigidity and toughness. Not only can cause deviation of hole position degree, but also can easily lead to breakage of the drill bit between the drill sleeve and the workpiece due to rotation concentricity
2) The pore depth of many products is required to be more than 12mm and above, and the practical experience is as follows: too deep drilling is extremely easy to fatigue and damage the drill bit, so that the service life of the drill bit is greatly shortened.
3) The production efficiency is greatly reduced by processing the relatively slender Kong Yongshi on the existing equipment.
Disclosure of Invention
The utility model aims to solve the technical problems that: the brake backplate drilling machine is provided to solve one or more of the technical problems of the prior art and to provide at least one of a beneficial choice or creation.
The utility model solves the technical problems as follows:
brake backplate drilling machine includes:
a frame;
a waiting station, wherein the waiting station is provided with a workpiece stacking structure;
the central hole machining station is provided with at least two first drilling machines, and the first drilling machines are arranged on the rack;
the deep hole processing station is provided with at least two deep hole processing stations; each deep hole processing station is provided with at least two second drilling machines, and the second drilling machines are arranged on the frame;
a blanking station;
the workpiece conveying structure is used for enabling workpieces to sequentially pass through the waiting station, the center hole processing station, the deep hole processing stations and the blanking station.
Through the technical scheme, the deep holes of the product are processed through the plurality of deep hole processing positions, the second drilling machines on the plurality of deep hole processing positions respectively process the same hole in a segmented mode, and the processing mode of two stages of multi-segment is adopted, so that the service life of the drill bit is prolonged, and the processing efficiency of the product can be improved greatly (the time of drilling which is most time-consuming is reduced by half directly). By adopting the scheme, the rejection rate of workpiece processing can be greatly reduced, and the processing efficiency can be improved.
As a further improvement of the technical scheme, the workpiece stack structure comprises a stack material placing structure and a workpiece forward pushing component; the stacking material placing structure is fixedly arranged on the frame; the workpiece forward pushing assembly is arranged below the stacking material placing structure, the workpiece forward pushing structure comprises a forward pushing driving piece and a forward pushing piece, the forward pushing driving piece is fixedly arranged on the frame, and the forward pushing driving piece drives the forward pushing piece to be close to or far away from the workpiece conveying structure.
Through the technical scheme, the workpieces are stacked from bottom to top, and after the lowermost workpiece is pushed out by the workpiece forward pushing assembly, the upper workpiece moves downwards under the action of gravity and is pushed out in the subsequent processing process.
As a further improvement of the above technical solution, the workpiece conveying structure includes a reciprocating turntable, a workpiece clamping jaw, a clamping jaw lifting member and a reciprocating driving member; the reciprocating turntable is rotationally connected with the frame, the reciprocating driving piece is installed on the frame, 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.
Through the technical scheme, the reciprocating turntable has the functions of conveying, is not directly related to the positioning and processing of workpieces, and can properly reduce the precision requirement of the turntable, thereby greatly simplifying the structural form of the turntable. In addition, because the reciprocating turntable adopts reciprocating swinging and rotating motion, the pipe and line connection on the turntable can adopt a hose direct connection mode, and more auxiliary mechanisms can be added without avoiding the problem of connecting the line connection pipe.
As a further improvement of the technical scheme, the distance between two adjacent stations among the station to be processed, the center hole processing station, the plurality of deep hole processing stations and the blanking station is the same; the number of the workpiece clamping jaws is set to be a plurality of, and the intervals of the workpiece clamping jaws are the same.
As a further improvement of the above technical scheme, the number of the waiting station, the center hole processing station, the plurality of deep hole processing stations, and the blanking station is set to a first number, the number of the workpiece clamping jaws is set to a second number, the second number is smaller than the first number, and the difference between the first number and the second number is one.
As a further improvement of the technical scheme, the blanking station is provided with a blanking slide way and a blanking pushing piece, the blanking slide way is obliquely arranged, two ends of the blanking slide way are respectively provided with a high-position end and a low-position end, and the blanking pushing piece pushes a workpiece to move from the high-position end to the low-position end.
As a further improvement of the above technical solution, the frame is provided with a first debris barrier.
Through above-mentioned technical scheme, first piece baffle is used for blockking the metal piece that drilling produced, avoids metal piece to run in disorder everywhere.
As a further improvement of the above technical solution, the workpiece conveying structure is provided with a second scrap baffle.
Through above-mentioned technical scheme, the second piece baffle is used for blockking the metal piece that drilling produced, avoids metal piece to run in disorder everywhere.
As a further improvement of the technical scheme, the frame is provided with an arc-shaped guide groove, the lower ends of the first drilling machine and the second drilling machine are provided with arc-shaped guide blocks, the arc-shaped guide blocks are installed in the arc-shaped guide groove, and the arc-shaped guide blocks are connected with the arc-shaped guide groove in a sliding mode.
Through 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 when being adjusted, and the radian of the brake pad is adapted.
The beneficial effects of the utility model are as follows: by adopting the scheme, the rejection rate of workpiece processing can be greatly reduced, and the processing efficiency can be improved.
The utility model is used in the technical field of brake backboard processing equipment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the utility model, but not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic overall structure of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of the overall structure of a workpiece stack structure according to an embodiment of the utility model;
FIG. 3 is a schematic view of the overall structure of another angle of the workpiece stack structure according to an embodiment of the utility model;
FIG. 4 is a schematic view of the overall structure of a workpiece transport structure according to an embodiment of the utility model;
fig. 5 is a schematic view showing the overall structure of a first drilling machine according to an embodiment of the present utility model.
100, a rack; 101. waiting for a station; 102. a center hole processing station; 103. a deep hole processing station; 104. a blanking station; 110. a first debris barrier; 120. an arc-shaped guide groove; 200. a workpiece conveying structure; 210. workpiece clamping jaws; 211. a first jaw; 212. a second jaw; 213. a jaw connecting rod; 214. a jaw reset; 220. a reciprocating rotary table; 230. a reciprocating driving member; 240. a jaw lifting member; 250. a second debris barrier; 300. a workpiece stack structure; 310. a workpiece forward pushing assembly; 311. a front pushing member; 312. a push-forward driving member; 320. stacking and placing structure; 321. a stack limit rod; 322. a workpiece groove plate; 323. a workpiece limiting structure; 324. workpiece drop preventing piece; 410. a first drilling machine; 420. a first jig; 510. a second drilling machine; 520. a second jig; 610. a blanking pushing piece; 620. a blanking slideway; 700. arc guide block.
Detailed Description
The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all coupling/connection relationships mentioned herein do not refer to direct connection of the components, but rather, refer to the fact that a more optimal coupling structure may be formed by adding or subtracting coupling aids depending on the particular implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.
Referring to fig. 1 to 5, the brake backplate drilling machine includes a frame 100, a waiting station 101, a center hole processing station 102, a deep hole processing station 103, a blanking station 104, and a workpiece conveying structure 200.
The housing 100 is fixedly coupled with a first debris barrier 110.
Reciprocating rotary table 220 is rotatably coupled to frame 100. The jaw lifter 240 is fixedly installed at the lower end of the reciprocating rotary table 220. Workpiece jaw 210 is mounted to reciprocating turntable 220. The reciprocating turntable 220 is further fixedly provided with a second debris baffle 250, the second debris baffle 250 comprises two straight plates and an arc plate, the two straight plates are respectively arranged at two ends of the arc plate, the straight plates and the arc plate are integrally formed, and the second debris baffle 250 is used for blocking metal debris generated by drilling and avoiding the metal debris from running everywhere.
In the present embodiment, the number of the workpiece holding jaws 210 is set to the second number, the number of the workpiece holding jaws 210 is set to four, four workpiece holding jaws 210 are set to be two by two, two workpiece holding jaws 210 form one holding jaw group, specifically, two workpiece holding jaws 210 are connected by one holding jaw connecting rod 213, each holding jaw group is driven to move up and down by one holding jaw lifting member 240, specifically, the output end of the holding jaw lifting member 240 is fixedly connected with the holding jaw connecting rod 213.
In this embodiment, workpiece jaw 210 includes a first jaw 211 and a second jaw 212, first jaw 211 and second jaw 212 are slidably coupled, first jaw 211 is fixedly coupled to jaw coupling rod 213, second jaw 212 is slidably coupled to reciprocating rotary table 220, and jaw return 214 is disposed between second jaw 212 and reciprocating rotary table 220, and jaw return 214 causes second jaw 212 to have a tendency to move downward after being lifted. The second clamping jaw 212 is disposed above the first clamping jaw 211, a clamping space is formed between the first clamping jaw 211 and the second clamping jaw 212, and when the clamping jaw lifting member 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 abutted with the workpiece, so that clamping of the workpiece is completed.
The reciprocating driver 230 is provided in a linear driving structure, and specifically, in this embodiment, the reciprocating driver 230 is provided as a linear cylinder, and the reciprocating driver 230 is provided with a connection end and a driving end, the connection end is hinged with the frame 100, and the driving end is hinged with the reciprocating rotary table 220. The hinge point of the reciprocating driving member 230 and the reciprocating rotary table 220 is eccentrically arranged, and the reciprocating driving member 230 drives the reciprocating rotary table 220 to reciprocate so as to drive the workpiece clamping jaw 210 to reciprocate.
The waiting station 101, the center hole processing station 102, the deep hole processing station 103, and the blanking station 104 are arranged around the workpiece conveying structure 200. And the distances between two adjacent stations of the waiting station 101, the center hole processing station 102, the deep hole processing station 103 and the blanking station 104 are the same.
The standby station 101 is provided with a workpiece stack structure 300, and the workpiece stack structure 300 comprises a workpiece forward pushing component 310 and a stack material placing structure 320.
The stacking structure 320 is fixedly mounted on the frame 100, and the stacking structure 320 includes a plurality of stacking stop bars 321, a workpiece trough plate 322, and a workpiece stop structure 323.
The workpiece groove plate 322 is fixedly connected with the frame 100, and a through groove corresponding to the shape of the brake pad is arranged in the middle of the workpiece groove plate 322 and penetrates through the workpiece groove plate 322 along the up-down direction. The stacking limiting rods 321 are arranged above the workpiece groove plates 322, and the stacking limiting rods 321 and the workpiece groove plates 322 are arranged in an adjustable mode through bar-shaped hole-screw structures, so that the stacking limiting rods 321 can be adjusted according to the actual shapes of the brake blocks to adapt to different workpieces.
The workpiece limiting structure 323 is fixedly connected with the frame 100, the workpiece limiting structure 323 is arranged below the workpiece groove plate 322, and the workpiece limiting structure 323 is arranged on one side, close to the workpiece conveying structure 200, of the workpiece groove plate 322. The plurality of stack limiting rods 321 are arranged according to the shape of the brake pad, limit the four corners of the brake pad, and the brake pad is stacked between the four stack limiting rods 321 along the up-down direction.
The stacking material placing structure 320 is further provided with two workpiece falling preventing pieces 324, the two workpiece falling preventing pieces 324 are arranged to be linear cylinders, the two workpiece falling preventing pieces 324 are respectively arranged on two sides of the workpiece groove plate 322, and the two workpiece falling preventing pieces 324 are arranged above the workpiece groove plate 322. The workpiece drop prevention member 324 is provided as a linear cylinder.
The stack loading structure 320 is disposed above the workpiece forward pushing assembly 310. The workpiece forward pushing assembly 310 comprises a forward pushing piece 311 and a forward pushing driving piece 312, the forward pushing driving piece 312 is arranged as a linear cylinder, a shell of the forward pushing driving piece 312 is fixedly connected with the frame 100, an output end of the forward pushing driving piece 312 is connected with the forward pushing piece 311, and the forward pushing driving piece 312 drives the forward pushing piece 311 to be close to or far away from the workpiece conveying structure 200. The pusher 311 is used to push the workpiece toward the workpiece transport structure 200 in preparation for a subsequent gripping step of the workpiece jaw 210. When the forward pushing driving member 312 drives the forward pushing member 311 to move forward, the two workpiece falling preventing members 324 work, and the two workpiece falling preventing members 324 clamp the workpiece above the workpiece to be pushed forward, so that the influence of falling of the rear side of the workpiece above on the normal work of the forward pushing member 311 is avoided.
The number of the center hole processing stations 102 is set to be one, two first drills 410 and first jigs 420 are arranged at the center hole processing stations 102, the first drills 410 are used for drilling center holes on the brake pads, and in other embodiments, three first drills 410 are arranged at the center hole processing stations 102 to meet the production requirement of the brake pads. The first jig 420 is disposed on a side of the first drilling machine 410, which is close to the workpiece conveying structure 200, and the first jig 420 is used for positioning and compressing the brake pad, so as to avoid the brake pad from being deviated during drilling. The frame 100 is provided with two arc-shaped guide grooves 120, the two arc-shaped guide grooves 120 are concentrically arranged, and the diameters of the two arc-shaped guide grooves 120 are different, so that the two arc-shaped guide grooves 120 are arranged in parallel. The lower extreme fixedly connected with arc guide block 700 of first drilling machine 410, arc guide block 700 sets up in arc guide slot 120, and arc guide block 700 slides with arc guide slot 120 and is connected, and arc guide block 700 and arc guide slot 120 lead first drilling machine 410 for first drilling machine 410 is adjusted along the arc when adjusting, with the radian of adaptation brake block.
The number of deep hole processing stations 103 is two (in other embodiments, the number of deep hole processing stations 103 can also be set as the number), two second drills 510 and second jigs 520 are arranged at the deep hole processing stations 103, and in other embodiments, three second drills 510 are arranged at the deep hole processing stations 103, so as to meet the requirement on the number of drilling holes of the brake pad. The second drilling machine 510 is used for drilling the brake pad, and the second drilling machines 510 of the two deep hole processing stations 103 are used for carrying out step-by-step operation on the same hole for a plurality of times, so that the service life of the drill bit is prolonged, and the processing efficiency of products can be greatly improved. An arc-shaped guide block 700 is also fixed to the lower end of the second drilling machine 510.
The blanking station 104 is provided with a blanking pusher 610 and a blanking slide 620. The blanking pushing member 610 is mounted on the reciprocating rotary table 220, the blanking pushing member 610 is arranged as a linear cylinder, and a pushing plate is fixed at the output end of the blanking pushing member 610 and is used for pushing a workpiece. The blanking slide 620 is fixedly installed on the frame 100, the blanking slide 620 is obliquely arranged, two ends of the blanking slide 620 are respectively arranged to be a high-position end and a low-position end, and the blanking pushing member 610 is arranged on one side, far away from the low-position end, of the high-position end. The blanking pusher 610 drives the workpiece to move to the blanking chute 620, then the workpiece moves from the high end to the low end, and finally slides from the blanking chute 620 to the workpiece basket.
The workpiece is processed from waiting station to central hole processing station 102: drilling a center hole- & gta first deep hole machining station 103: drilling front half Kongdi two deep hole machining stations 103: the second half Cheng Kong of the drill is sent to the blanking station 104 to blanking, and the process is finished.
The specific details are as follows:
the workpieces are separated in an escalator by the workpiece stack structure 300, and the lowest brake pad is pushed to move towards the workpiece transmission structure 200 and is finally limited by the workpiece limiting structure 323 to wait for the subsequent process. A first workpiece jaw 210 of the first set of jaw sets on shuttle 220 clamps, lifts and transfers the workpiece to be machined in station 101 to hole center machining station 102 via shuttle 220 (the machining station is dedicated to hole center machining to exclude the effects of tearing), while a second workpiece jaw 210 of the first set of jaw sets clamps, lifts and transfers the machined workpiece in hole center machining station 102 to first deep hole machining station 103 simultaneously (the machining station is dedicated to machining the first half of the hole, approximately more than half of the hole depth). Synchronously, the first workpiece clamping jaw 210 of the second clamping jaw set on the shuttle table 220 clamps, lifts, and transfers the machined workpiece in the first deep hole machining station 103 to the second deep hole machining station 103 (which is dedicated to the second half of the machining hole), while the second workpiece clamping jaw 210 of the second clamping jaw set clamps, lifts, and moves the machined workpiece in the second deep hole machining station 103 to the blanking station 104 synchronously. The reciprocating driver 230 then drives the reciprocating turntable 220 to reset, and the blanking pusher 610 on the reciprocating turntable 220 then drives a pusher plate that pushes the workpiece on the blanking station 104 onto the blanking slide 620 to complete the workpiece output.
The key to the sequence of actions is a shuttle 220, a plurality of workpiece clamping jaws 210 mounted on the shuttle 220, the plurality of workpiece clamping jaws 210 simultaneously clamping, lifting and transporting the workpiece at the first four stations to the next station. It is emphasized that: the reciprocating turntable 220 has the function of conveying, has no direct relation with the positioning and processing of workpieces, and can properly reduce the precision requirement of the turntable, thereby greatly simplifying the structural form. In addition, because the reciprocating turntable 220 adopts reciprocating swinging and rotating motion, the pipe and line connection on the turntable can adopt a hose direct connection mode, and more auxiliary mechanisms can be added without avoiding the problem of connecting the line connection pipe.
Also, the number of work holding jaws 210 is greater than in the prior art, but the same can be done in a stepwise and consistent manner. The return stroke of the reciprocating rotary table 220 is synchronized during the drilling process without any waste of idle travel.
While the preferred embodiments of the present utility model have been illustrated and described, the present utility model is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present utility model, and these are intended to be included in the scope of the present utility model as defined in the appended claims.
Claims (9)
1. Brake backplate drilling machine, its characterized in that: comprising the following steps:
a frame;
a waiting station, wherein the waiting station is provided with a workpiece stacking structure;
the central hole machining station is provided with at least two first drilling machines, and the first drilling machines are arranged on the rack;
the deep hole processing station is provided with at least two deep hole processing stations; each deep hole processing station is provided with at least two second drilling machines, and the second drilling machines are arranged on the frame;
a blanking station;
the workpiece conveying structure is used for enabling workpieces to sequentially pass through the waiting station, the center hole processing station, the deep hole processing stations and the blanking station.
2. The brake backplate drilling machine of claim 1, wherein: the workpiece stack structure comprises a stack material placing structure and a workpiece forward pushing component; the stacking material placing structure is fixedly arranged on the frame; the workpiece forward pushing assembly is arranged below the stacking material placing structure and comprises a forward pushing driving piece and a forward pushing piece, the forward pushing driving piece is fixedly arranged on the frame, and the forward pushing driving piece drives the forward pushing piece to be close to or far away from the workpiece conveying structure.
3. The brake backplate drilling machine of claim 1, wherein: 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 frame, the reciprocating driving piece is installed on the frame, 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.
4. A brake backplate drilling machine according to claim 3 wherein: the distance between two adjacent stations among the waiting station, the center hole processing station, the deep hole processing stations and the blanking station is the same; the number of the workpiece clamping jaws is set to be a plurality of, and the intervals of the workpiece clamping jaws are the same.
5. A brake backplate drilling machine according to claim 3 wherein: the number of the work stations to be processed, the center hole processing stations, the deep hole processing stations and the blanking stations is set to be a first number, the number of the workpiece clamping jaws is set to be a second number, the second number is smaller than the first number, and the difference between the first number and the second number is one.
6. The brake backplate drilling machine of claim 1, wherein: the blanking station is equipped with blanking slide and blanking impeller, the slope of blanking slide sets up, high position end and low position end are established respectively to the both ends of blanking slide, blanking impeller promotes the work piece certainly high position end extremely low position end motion.
7. The brake backplate drilling machine of claim 1, wherein: the frame is provided with a first debris barrier.
8. The brake backplate drilling machine of claim 1, wherein: the workpiece transport structure is provided with a second debris barrier.
9. The brake backplate drilling machine of claim 1, wherein: the frame is equipped with the arc guide way, first drilling machine and the lower extreme of second drilling machine is equipped with the arc guide block, the arc guide block installation with in the arc guide way, the arc guide block with the arc guide way slides and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223554397.8U CN219234024U (en) | 2022-12-28 | 2022-12-28 | Drilling machine for brake back plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223554397.8U CN219234024U (en) | 2022-12-28 | 2022-12-28 | Drilling machine for brake back plate |
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| Publication Number | Publication Date |
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| CN219234024U true CN219234024U (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223554397.8U Active CN219234024U (en) | 2022-12-28 | 2022-12-28 | Drilling machine for brake back plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921932A (en) * | 2022-12-28 | 2023-04-07 | 濑良（佛山）精冲有限公司 | Brake back plate drilling method and brake back plate drilling device |
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2022
- 2022-12-28 CN CN202223554397.8U patent/CN219234024U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921932A (en) * | 2022-12-28 | 2023-04-07 | 濑良（佛山）精冲有限公司 | Brake back plate drilling method and brake back plate drilling device |
| CN115921932B (en) * | 2022-12-28 | 2026-01-02 | 濑良（佛山）精冲有限公司 | Brake backplate drilling method and brake backplate drilling device |
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