CN113878176A - One-time punching device for burrs of precast hole of casting - Google Patents

One-time punching device for burrs of precast hole of casting Download PDF

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Publication number
CN113878176A
CN113878176A CN202111247909.3A CN202111247909A CN113878176A CN 113878176 A CN113878176 A CN 113878176A CN 202111247909 A CN202111247909 A CN 202111247909A CN 113878176 A CN113878176 A CN 113878176A
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CN
China
Prior art keywords
punching
support
burrs
cylinder
plate
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Granted
Application number
CN202111247909.3A
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Chinese (zh)
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CN113878176B (en
Inventor
罗锁平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Jianshe Automobile A/c Co ltd
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Chongqing Jianshe Automobile A/c Co ltd
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Priority to CN202111247909.3A priority Critical patent/CN113878176B/en
Publication of CN113878176A publication Critical patent/CN113878176A/en
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Publication of CN113878176B publication Critical patent/CN113878176B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • B23D79/02—Machines or devices for scraping
    • B23D79/06—Machines or devices for scraping with reciprocating cutting-tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/02—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of drums or rotating tables or discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/04—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Punching Or Piercing (AREA)

Abstract

The invention relates to the technical field of machining, in particular to a one-time punching device for burrs of a precast hole of a casting, wherein a linear guide rail is arranged above a punching base, a punching support is in sliding connection with the linear guide rail, a rodless cylinder is arranged above the punching base, the output end of the rodless cylinder is connected with the punching support, an ultrathin cylinder is arranged above the punching support, a punching plate is arranged at the output end of the ultrathin cylinder, a punching needle assembly is arranged below the punching plate, a rotary cylinder is arranged on one side of the punching base, the output end of the rotary cylinder is fixedly connected with an active turntable, the turnover plate is arranged on the active turntable, the number of the lever cylinders is two, the two lever cylinders are symmetrically arranged on the turnover plate, and a positioning assembly is fixedly arranged on the turnover plate. Through the structure, a plurality of holes of burrs can be removed at one time, the casting body can be guaranteed not to be damaged, the product quality is ensured, meanwhile, manual loading and unloading are not needed, and potential safety risks are eliminated.

Description

One-time punching device for burrs of precast hole of casting
Technical Field
The invention relates to the technical field of machining, in particular to a one-time punching device for burrs of a precast hole of a casting.
Background
At present, for removing burrs of a precast hole of a porous casting, an enterprise generally adopts a drill rod to sequentially punch through, and partial enterprises use equipment such as bench drills to process one by one, so that the burrs of the precast hole are removed, the cast body is unclean, the processing time is long, the cast body is easily damaged, and potential personal injury risks exist.
Disclosure of Invention
In order to solve the problems of long removing time and poor quality state of the existing cast precast hole burrs, the invention provides a one-time punching device for the cast precast hole burrs.
The invention provides a one-time punching device for burrs of a precast hole of a casting, which comprises a punching base, a linear guide rail, a punching support, a rodless cylinder, an ultrathin cylinder, a punching plate, a punching needle assembly, a rotary cylinder, a driving turntable, a turnover plate, a lever cylinder and a positioning assembly, wherein the linear guide rail is arranged above the punching base, the punching support is in sliding connection with the linear guide rail, the rodless cylinder is arranged above the punching base, the output end of the rodless cylinder is connected with the punching support, the ultrathin cylinder is arranged above the punching support, the punching plate is arranged at the output end of the ultrathin cylinder, the punching needle assembly is arranged below the punching plate, the rotary cylinder is arranged at one side of the punching base, the output end of the rotary cylinder is fixedly connected with the driving turntable, and the punching plate is arranged on the driving turntable, the number of the lever cylinders is two, the two lever cylinders are symmetrically arranged on the turnover plate, and the positioning assembly is fixedly arranged on the turnover plate.
A workpiece is placed on the positioning assembly on the turnover plate through a mechanical arm, then a chuck of a lever cylinder arranged on the turnover plate clamps a product, then the rodless cylinder pushes the punching support to slide along the length direction of the linear guide rail and reach the upper part of the turnover plate, the limiting block limits the position of the punching support, then the ultrathin cylinder drives the punching plate to descend, all hole burrs in the direction of the product are removed through the punching needle assembly, then the punching plate ascends and resets, the rodless cylinder pushes the punching support to retreat and reset, the rotary cylinder drives the driving turntable to drive the turnover plate to rotate 180 degrees, the chuck of the lever cylinder is opened, the product automatically falls, then the rotary cylinder drives the driving turntable to drive the turnover plate to rotate 180 degrees in the opposite direction and reset, and then the mechanical arm places the workpiece, and (5) circulating and reciprocating. The punching device can remove a plurality of burrs at one time, can ensure that a casting body is not damaged, ensures the product quality, and simultaneously eliminates potential safety risks without manual loading and unloading.
The punching needle assembly comprises a first punching needle and a second punching needle, and the first punching needle and the second punching needle are fixedly connected with the punching plate and are located below the punching plate.
The first punching needle and the second punching needle are matched to remove all hole burrs in the direction of the product.
The positioning assembly comprises a first positioning block and a second positioning block, and the first positioning block and the second positioning block are fixedly connected with the turnover plate and are located above the turnover plate.
The first positioning block and the second positioning block are arranged, so that a stable supporting effect can be achieved on a product.
The primary punching device for the burrs of the precast holes of the castings further comprises a second buffering support, an inner hexagonal socket head cap screw, a limiting block and an oil pressure buffer, the second buffering support is fixedly connected with the punching base and is positioned above the punching base, the oil pressure buffer is connected with the second buffering support through the inner hexagonal socket head cap screw, and the limiting block is fixedly connected with the punching support and is positioned on one side, close to the oil pressure buffer, of the punching support.
The second buffering support is matched with the inner hexagonal socket head cap screw and used for supporting the oil buffer, and when the rodless cylinder pushes the punching support to retreat and reset, the limiting block is matched with the oil buffer to limit the retreating position of the oil buffer.
The one-time punching device for the cast precast hole burrs further comprises a dustproof metal plate, wherein the dustproof metal plate is fixedly connected with the punching support and is located at one side of the limiting block, and the punching support is close to the limiting block.
The dustproof sheet metal is used for playing an effective dustproof role.
The primary punching device for the burrs of the precast holes of the castings further comprises a first supporting column and a second supporting column, wherein the first supporting column and the second supporting column are fixedly connected with the turnover plate and are located above the turnover plate.
The first supporting column and the second supporting column are used for achieving a stable supporting effect on a product.
The invention relates to a one-time punching device for burrs of a precast hole of a casting, which is characterized in that a mechanical arm is used for placing a workpiece on a positioning component on a turnover plate, then a chuck of a lever cylinder arranged on the turnover plate clamps a product, then a rodless cylinder pushes a punching support to slide along the length direction of a linear guide rail and reach the upper part of the turnover plate, a limiting block limits the reaching position of the punching support, then an ultrathin cylinder drives the punching plate to descend, a punching needle component is used for removing all hole burrs on the product in the direction, then the punching plate ascends and resets, a rodless cylinder pushes the punching support to retreat and reset, a rotary cylinder drives an active turntable to drive the turnover plate to rotate 180 degrees, the chuck of the lever cylinder is opened, the product automatically falls, and then the rotary cylinder drives the active turntable to drive the turnover plate to rotate 180 degrees in the opposite direction and reset, then the manipulator puts the piece, and the cycle is repeated. The punching device can remove a plurality of burrs at one time, can ensure that a casting body is not damaged, ensures the product quality, and simultaneously eliminates potential safety risks without manual loading and unloading.
Drawings
Fig. 1 is a schematic structural diagram of a one-time punching device for casting precast hole burrs adopted by the invention.
FIG. 2 is a side view of a one-time die cutting apparatus for pre-cast hole flash of castings used in the present invention.
FIG. 3 is a top view of a one-time die-cutting device for pre-cast hole burrs of a casting used in the present invention.
FIG. 4 is a front view of a primary die-cutting device for the pre-cast hole burr of the casting used in the present invention.
1-a first punching needle, 2-a second punching needle, 3-a punching plate, 4-a floating joint, 5-an oil-free bush, 6-a guide rod, 7-an ultrathin cylinder, 8-a punching bracket, 9-a limiting block, 10-a hydraulic buffer, 11-an inner hexagonal socket head screw, 12-a second buffer bracket, 13-a dustproof sheet metal, 16-a punching base, 17-a linear guide rail, 18-a rodless cylinder, 19-a rotary cylinder, 20-an active turntable, 21-a first positioning block, 22-a lever cylinder, 23-a square lead screw support unit, 24-a first buffer bracket, 25-a cushion block, 26-a first holding block, 27-a second holding block, 28-a turnover plate, 29-a second positioning block, 30-a second supporting column, 31-a third supporting column, 32-a driven rotating shaft and 34-a first supporting column.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
The present invention will be described in further detail below with reference to the accompanying drawings and a processing method using the apparatus of the present invention.
Referring to fig. 1 to 4, the invention provides a one-time punching device for burrs of a pre-cast hole of a casting, comprising a punching base 16, a linear guide rail 17, a punching support 8, a rodless cylinder 18, an ultra-thin cylinder 7, a punching plate 3, a punching pin assembly, a rotary cylinder 19, a driving turntable 20, a turnover plate 28, a lever cylinder 22 and a positioning assembly, wherein the linear guide rail 17 is arranged above the punching base 16, the punching support 8 is slidably connected with the linear guide rail 17, the rodless cylinder 18 is arranged above the punching base 16, the output end of the rodless cylinder 18 is connected with the punching support 8, the ultra-thin cylinder 7 is arranged above the punching support 8, the punching plate 3 is arranged at the output end of the ultra-thin cylinder 7, the punching pin assembly is arranged below the punching plate 3, the rotary cylinder 19 is arranged at one side of the punching base 16, the output end of the rotating cylinder 19 is fixedly connected with the driving turntable 20, the turnover plate 28 is disposed on the driving turntable 20, the number of the lever cylinders 22 is two, the two lever cylinders 22 are symmetrically disposed on the turnover plate 28, and the positioning assembly is fixedly mounted on the turnover plate 28.
In this embodiment, a workpiece is placed on the positioning assembly on the turnover plate 28 by a manipulator, then a chuck of the lever cylinder 22 mounted on the turnover plate 28 clamps a product, then the rodless cylinder 18 pushes the punching support 8 to slide along the length direction of the linear guide rail 17 and reach the upper part of the turnover plate 28, the limit block 9 limits the reaching position, then the ultrathin cylinder 7 drives the punching plate 3 to descend, all hole burrs in the direction of the product are removed by the punch pin assembly, then the punching plate 3 ascends and resets, the rodless cylinder 18 pushes the punching support 8 to retreat and reset, the rotary cylinder 19 drives the driving turntable 20 to drive the turnover plate 28 to rotate 180 degrees, the chuck of the lever cylinder 22 is opened, the product automatically falls, and then the rotary cylinder 19 drives the driving turntable 20 to drive the turnover plate 28 to rotate 180 degrees in the opposite direction to reset, then the manipulator puts the piece, and the cycle is repeated. The punching device can remove a plurality of burrs at one time, can ensure that a casting body is not damaged, ensures the product quality, and simultaneously eliminates potential safety risks without manual loading and unloading.
Further, the punching needle assembly comprises a first punching needle 1 and a second punching needle 2, and the first punching needle 1 and the second punching needle 2 are both fixedly connected with the punching plate 3 and are positioned below the punching plate 3.
In the present embodiment, the engagement of the first punch pin 1 and the second punch pin 2 can remove all hole burrs in the direction of the product.
Further, the positioning assembly comprises a first positioning block 21 and a second positioning block 29, and both the first positioning block 21 and the second positioning block 29 are fixedly connected with the turnover plate 28 and are located above the turnover plate 28.
In the present embodiment, the first positioning block 21 and the second positioning block 29 are provided to stably support a product.
Further, the primary punching device for the cast precast hole burrs further comprises a second buffering support 12, an inner hexagonal socket head cap screw 11, a limiting block 9 and an oil pressure buffer 10, the second buffering support 12 is fixedly connected with the punching base 16 and is positioned above the punching base 16, the oil pressure buffer 10 is connected with the second buffering support 12 through the inner hexagonal socket head cap screw 11, and the limiting block 9 is fixedly connected with the punching support 8 and is positioned on one side, close to the oil pressure buffer 10, of the punching support 8.
In this embodiment, the second buffer bracket 12 is engaged with the socket cap screw 11 to support the hydraulic shock absorber 10, and when the rodless cylinder 18 pushes the blanking bracket 8 to retreat and return, the stopper 9 is engaged with the hydraulic shock absorber 10 to limit the retreating position.
Further, the primary punching device for the cast precast hole burrs further comprises a dustproof sheet metal 13, wherein the dustproof sheet metal 13 is fixedly connected with the punching support 8 and is located on one side, close to the limiting block 9, of the punching support 8.
In the present embodiment, the dust-proof sheet metal 13 is used to play an effective dust-proof role.
Further, the primary punching device for the cast precast hole burrs further comprises a first supporting column 34 and a second supporting column 30, wherein the first supporting column 34 and the second supporting column 30 are fixedly connected with the turnover plate 28 and are located above the turnover plate 28. The primary punching device for the cast precast hole burrs further comprises a third supporting column 31, wherein the third supporting column 31 is fixedly connected with the turnover plate 28 and is positioned above the turnover plate 28.
In this embodiment, the first support column 34, the second support column 30 and the third support column 31 are all used for stabilizing and supporting the product.
Further, the one-time punching device for the cast precast hole burrs further comprises two groups of matching components and a driven rotating shaft 32, each group of matching components comprises a square lead screw support unit 23, a first buffering support 24, a cushion block 25, a first clasping block 26 and a second clasping block 27, the cushion block 25 is fixedly connected with the punching base 16, the square lead screw support unit 23 is arranged above the cushion block 25, the first buffering support 24 is fixedly connected with the cushion block 25 and is positioned on one side of the cushion block 25, the first clasping block 26 and the second clasping block 27 are both fixedly connected with the turnover plate 28, meanwhile, the first clasping block 26 is in bolted connection with the second clasping block 27, a containing space for the driven rotating shaft 32 to pass through is formed between the first clasping block 26 and the second clasping block 27, one end of the driven rotating shaft 32 is fixedly connected with the driving rotating disc 20, the other end of the driven rotating shaft 32 penetrates through the two accommodating spaces in sequence.
In the present embodiment, the rotation cylinder 19 operates to rotate the driving turntable 20 and then the driven shaft 32, thereby turning the turning plate 28.
Further, the die-cut device of foundry goods precast hole burr still includes two oilless bush 5 and two guide bars 6, it connects 4 to be provided with to float on the die-cut board 3, just float connect 4 with the output fixed connection of ultra-thin cylinder 7, two oilless bush 5 all with die-cut 8 fixed connection of support, and two oilless bush 5 all runs through die-cut support 8, every the one end of guide bar 6 runs through and corresponds oilless bush 5, and with die-cut 3 fixed connection of board, just guide bar 6 with 5 sliding connection of oilless bush.
In this embodiment, the output end of the ultra-thin cylinder 7 extends and retracts to drive the floating joint 4 to move up and down, so as to drive the punching plate 3 to move up and down in a reciprocating manner, and meanwhile, the guide rod 6 slides relative to the oilless bushing 5.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and those skilled in the art should understand that the technical solutions of the present invention can be modified or substituted with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims (6)

1. The utility model provides a die-cut device of foundry goods precast hole burr once which characterized in that:
the automatic punching machine comprises a punching base, a linear guide rail, a punching support, a rodless cylinder, an ultrathin cylinder, a punching plate, a punching needle assembly, a rotary cylinder, an active rotary table, a turnover plate, a lever cylinder and a positioning assembly, wherein the linear guide rail is arranged above the punching base, the punching support is in sliding connection with the linear guide rail, the rodless cylinder is arranged above the punching base, the output end of the rodless cylinder is connected with the punching support, the ultrathin cylinder is arranged above the punching support, the punching plate is arranged at the output end of the ultrathin cylinder, the punching needle assembly is arranged below the punching plate, the rotary cylinder is arranged on one side of the punching base, the output end of the rotary cylinder is fixedly connected with the active rotary table, the turnover plate is arranged on the active rotary table, and the number of the lever cylinders is two, the two lever cylinders are symmetrically arranged on the turnover plate, and the positioning assembly is fixedly arranged on the turnover plate.
2. The one-time punching device for burrs of the precast hole of the casting according to claim 1, wherein:
the punching needle assembly comprises a first punching needle and a second punching needle, and the first punching needle and the second punching needle are fixedly connected with the punching plate and are positioned below the punching plate.
3. The one-time punching device for burrs of the precast hole of the casting according to claim 2, wherein:
the positioning assembly comprises a first positioning block and a second positioning block, and the first positioning block and the second positioning block are fixedly connected with the turnover plate and are positioned above the turnover plate.
4. The one-time punching device for burrs of the precast hole of the casting according to claim 3, wherein:
the primary punching device for the cast precast hole burrs further comprises a second buffering support, an inner hexagonal socket head cap screw, a limiting block and an oil pressure buffer, the second buffering support is fixedly connected with the punching base and is located above the punching base, the oil pressure buffer is connected with the second buffering support through the inner hexagonal socket head cap screw, and the limiting block is fixedly connected with the punching support and is located on one side, close to the oil pressure buffer, of the punching support.
5. The one-time punching device for burrs of the precast hole of the casting according to claim 4, wherein:
the one-time punching device for the cast precast hole burrs further comprises a dustproof metal plate, wherein the dustproof metal plate is fixedly connected with the punching support and is located at one side of the limiting block, and the punching support is close to one side of the limiting block.
6. The one-time punching device for burrs of the precast hole of the casting according to claim 5, wherein:
the primary punching device for the burrs of the casting precast hole further comprises a first supporting column and a second supporting column, wherein the first supporting column and the second supporting column are fixedly connected with the turnover plate and are located above the turnover plate.
CN202111247909.3A 2021-10-26 2021-10-26 One-time punching device for burrs of precast hole of casting Active CN113878176B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111247909.3A CN113878176B (en) 2021-10-26 2021-10-26 One-time punching device for burrs of precast hole of casting

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Application Number Priority Date Filing Date Title
CN202111247909.3A CN113878176B (en) 2021-10-26 2021-10-26 One-time punching device for burrs of precast hole of casting

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CN113878176B CN113878176B (en) 2023-03-10

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201309030Y (en) * 2008-12-12 2009-09-16 勤威(天津)工业有限公司 Die for removing casting fins
CN203992669U (en) * 2014-07-07 2014-12-10 苏州石川制铁有限公司 The inside and outside burr removal device of gauge baffle plate foundry goods
CN204564896U (en) * 2015-04-15 2015-08-19 天津众拓创辉科技有限公司 A kind of hole punched device of automatically removing burr
CN107718161A (en) * 2017-10-24 2018-02-23 爱康企业集团(上海)有限公司 One goes out 24 plastic elbows punching platform
CN108581598A (en) * 2018-07-13 2018-09-28 费凌翔 A kind of turnover device for auto parts and components processing
CN109382555A (en) * 2017-08-04 2019-02-26 丹阳市宏泰金属制品厂 A kind of communications connectors go inner burr tooling with straight sleeve
CN208961591U (en) * 2018-11-20 2019-06-11 陕西海力特精密机械有限公司 Workpiece turning for automated processing machine tool turns around device
CN211966625U (en) * 2020-04-28 2020-11-20 卢昶帅 Multifunctional automatic rough machining device for blank
CN212525636U (en) * 2020-04-02 2021-02-12 刘民亮 Deburring device of circular tube punching machine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201309030Y (en) * 2008-12-12 2009-09-16 勤威(天津)工业有限公司 Die for removing casting fins
CN203992669U (en) * 2014-07-07 2014-12-10 苏州石川制铁有限公司 The inside and outside burr removal device of gauge baffle plate foundry goods
CN204564896U (en) * 2015-04-15 2015-08-19 天津众拓创辉科技有限公司 A kind of hole punched device of automatically removing burr
CN109382555A (en) * 2017-08-04 2019-02-26 丹阳市宏泰金属制品厂 A kind of communications connectors go inner burr tooling with straight sleeve
CN107718161A (en) * 2017-10-24 2018-02-23 爱康企业集团(上海)有限公司 One goes out 24 plastic elbows punching platform
CN108581598A (en) * 2018-07-13 2018-09-28 费凌翔 A kind of turnover device for auto parts and components processing
CN208961591U (en) * 2018-11-20 2019-06-11 陕西海力特精密机械有限公司 Workpiece turning for automated processing machine tool turns around device
CN212525636U (en) * 2020-04-02 2021-02-12 刘民亮 Deburring device of circular tube punching machine
CN211966625U (en) * 2020-04-28 2020-11-20 卢昶帅 Multifunctional automatic rough machining device for blank

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