CN113275661B - Metal part filing equipment - Google Patents

Metal part filing equipment Download PDF

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Publication number
CN113275661B
CN113275661B CN202110834957.6A CN202110834957A CN113275661B CN 113275661 B CN113275661 B CN 113275661B CN 202110834957 A CN202110834957 A CN 202110834957A CN 113275661 B CN113275661 B CN 113275661B
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China
Prior art keywords
plate
bevel gear
filing
bottom plate
fixedly connected
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CN202110834957.6A
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Chinese (zh)
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CN113275661A (en
Inventor
郑运月
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Shandong Hepeng Technology Co Ltd
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Shandong Hepeng Technology Co Ltd
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Priority to CN202110834957.6A priority Critical patent/CN113275661B/en
Publication of CN113275661A publication Critical patent/CN113275661A/en
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Publication of CN113275661B publication Critical patent/CN113275661B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D67/00Filing or rasping machines or devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D69/00Filing or rasping machines or devices. characterised only by constructional features of particular parts, e.g. guiding arrangements, drives; Accessories for filing or rasping

Abstract

The invention relates to the technical field of metal processing, and discloses a metal piece filing device which comprises a bottom plate, a driving mechanism, a filing mechanism and a clamping mechanism, wherein the bottom plate is provided with a clamping mechanism; the filing mechanism is arranged on one side, away from the ground, of the bottom plate and comprises a guide rod fixedly connected with the bottom plate, the end part of the guide rod is fixedly connected with the top plate, the middle part of the guide rod is connected with a first lifting plate in a sliding mode, the middle part of the first lifting plate is rotatably connected with a rotating shaft, two ends of the rotating shaft are fixedly connected with a fixing frame, a supporting plate is arranged on one side, away from the bottom plate, of the fixing frame, and a file is arranged in the middle part of one side, close to the bottom plate, of the supporting plate; the clamping mechanism is arranged between the first lifting plate and the top plate and comprises a second lifting plate in sliding connection with the guide rod; the driving mechanism comprises a first sliding groove arranged in the middle of the bottom plate, and the first sliding groove is connected with the sliding seat in a sliding mode. The invention is suitable for metal piece filing equipment, and the file can perform filing processing on the cambered surface of a metal piece through the swinging of the fixing frame.

Description

Metal part filing equipment
Technical Field
The invention relates to the technical field of metal processing, in particular to a metal piece filing device.
Background
The workpiece is filed with a file to file excess metal from the surface of the workpiece to achieve the desired size, shape and surface roughness on the drawing, an operation known as filing. The filing can process planes, curved surfaces, inner and outer arc surfaces and other complex surfaces, and can also be used for finishing a forming sample plate, a die, a cavity, a part, a workpiece during machine assembly and the like.
Ordinary filing all adopts the file to operate by the manual work, and this results in machining efficiency lower, and nevertheless adopts machining, and conventional processing mode can only carry out planar processing of polishing, can't carry out fine filing to the arcwall face, consequently need improve current equipment.
Disclosure of Invention
The invention provides a metal piece filing device which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a metal piece filing device comprises a bottom plate, a driving mechanism, a filing mechanism and a clamping mechanism;
the filing mechanism is arranged on one side, away from the ground, of the bottom plate and comprises a guide rod fixedly connected with the bottom plate, the end part of the guide rod is fixedly connected with the top plate, the middle part of the guide rod is connected with a first lifting plate in a sliding mode, the middle part of the first lifting plate is rotatably connected with a rotating shaft, two ends of the rotating shaft are fixedly connected with a fixing frame, a supporting plate is arranged on one side, away from the bottom plate, of the fixing frame, a file is arranged in the middle part of one side, close to the bottom plate, of the supporting plate, and a filing angle adjusting assembly is arranged between the first lifting plate and the bottom plate;
the clamping mechanism is arranged between the first lifting plate and the top plate and comprises a second lifting plate in sliding connection with the guide rod, clamping blocks are arranged on two sides of the second lifting plate, and a height adjusting assembly is arranged between the second lifting plate and the top plate;
actuating mechanism, including setting up in the first spout in bottom plate middle part, first spout sliding connection sliding seat, the middle part of sliding seat rotates to connect and rotates the seat, rotates the middle part sliding connection slide bar of seat, and the tip fixed connection mount of slide bar is equipped with reciprocal drive assembly between sliding seat and the bottom plate.
As a preferable technical scheme of the invention, the fixing frame is U-shaped, one side of the fixing frame, which is far away from the bottom plate, is provided with a second sliding chute, the second sliding chute is connected with two ends of the supporting plate in a sliding manner, the end part of the fixing frame, which is far away from the bottom plate, is provided with a first fixing plate, and a first spring is arranged between the first fixing plate and the supporting plate.
As a preferable technical solution of the present invention, the filing angle adjusting assembly includes a first lead screw rotatably connected to the base plate, and a middle portion of the first lead screw is threadedly connected to an end portion of the first elevating plate.
As a preferable technical scheme of the invention, one side of the bottom plate is provided with an installation seat which is rotatably connected with a rotating rod, the end part of the rotating rod is provided with a fifth bevel gear, the fifth bevel gear is meshed and connected with a sixth bevel gear, and the sixth bevel gear is fixedly connected with a first screw rod.
As a preferable technical scheme of the invention, the height adjusting assembly comprises a second screw rod which is rotatably connected with the top plate, and the middle part of the second screw rod is in threaded connection with the end part of the second lifting plate.
As a preferable technical scheme of the invention, one side of the top plate is provided with a second driving motor, an output shaft of the second driving motor is fixedly connected with a third bevel gear, the third bevel gear is meshed with a fourth bevel gear, and the fourth bevel gear is fixedly connected with the end part of the second screw rod.
As a preferable technical solution of the present invention, the third bevel gear is a tooth-missing gear.
As a preferred technical solution of the present invention, two sides of the second lifting plate are slidably connected to the clamping block, the second lifting plate is provided with a third fixing plate, a second spring is arranged between the third fixing plate and the clamping block, and the second spring is in a compressed state.
As a preferable technical scheme of the invention, the reciprocating driving assembly comprises a second fixed plate arranged on one side of the bottom plate, the second fixed plate is rotatably connected with a rotating disc, the outer side of the rotating disc is rotatably connected with one end of a supporting rod, and the other end of the supporting rod is rotatably connected with the sliding seat.
As a preferable technical scheme of the invention, a first driving motor is arranged on the second fixing plate, an output shaft of the first driving motor is fixedly connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear, and the second bevel gear is coaxially connected with a rotating disc.
The invention has the following advantages:
the invention is suitable for metal piece filing equipment, the file can file the cambered surface of a metal piece through the swinging of the fixing frame, and the filing angle can be changed by adjusting the height of the fixing frame, so that the whole equipment is more convenient to use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a metal part filing apparatus.
Fig. 2 is a front view of a metal part filing apparatus.
Fig. 3 is a partially enlarged schematic view of a in fig. 1.
Fig. 4 is a partially enlarged schematic view of B in fig. 1.
Fig. 5 is a schematic structural view of a supporting plate in a metal part filing device.
Fig. 6 is a schematic structural view of a driving mechanism in a metal member filing apparatus.
Fig. 7 is a side view of fig. 6.
Fig. 8 is a schematic structural view of a sliding seat in a metal part filing apparatus.
In the figure: 1. supporting legs; 2. a base plate; 3. a first chute; 4. a sliding seat; 5. a support bar; 6. rotating the disc; 7. a slide bar; 8. a fixed mount; 9. a first lead screw; 10. a guide bar; 11. a first lifter plate; 12. a rotating shaft; 13. a second lifter plate; 14. a top plate; 15. a yielding groove; 16. a support plate; 17. filing; 18. a second lead screw; 19. a fourth bevel gear; 20. a third bevel gear; 21. a second drive motor; 22. a mounting seat; 23. rotating the rod; 24. a fifth bevel gear; 25. a sixth bevel gear; 26. a second chute; 27. a first spring; 28. a first fixing plate; 29. a drive mechanism; 30. a filing mechanism; 31. a second fixing plate; 32. a rotating seat; 33. a first drive motor; 34. a first bevel gear; 35. a second bevel gear; 36. a third fixing plate; 37. a second spring; 38. a clamping block; 39. a clamping mechanism; 40. a filing angle adjusting assembly; 41. a height adjustment assembly; 42. a reciprocating drive assembly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In one embodiment, referring to fig. 1-8, a metal piece filing apparatus includes a base plate 2, a driving mechanism 29, a filing mechanism 30, and a clamping mechanism 39;
the filing mechanism 30 is arranged on one side of the bottom plate 2 far away from the ground, and comprises a guide rod 10 fixedly connected with the bottom plate 2, the end part of the guide rod 10 is fixedly connected with a top plate 14, the left side and the right side of the upper surface of the bottom plate 2 are both provided with the guide rod 10, the upper end of the guide rod 10 is fixedly connected with the left side and the right side of the top plate 14, the middle part of the guide rod 10 is slidably connected with a first lifting plate 11, the middle part of the first lifting plate 11 is rotatably connected with a rotating shaft 12, two ends of the rotating shaft 12 are fixedly connected with a fixed frame 8, the fixed frame 8 is U-shaped, the opening of the fixed frame 8 is upward, one side of the fixed frame 8 far away from the bottom plate 2 is provided with a supporting plate 16, the middle part of one side of the supporting plate 16 close to the bottom plate 2 is provided with a file 17, a filing angle adjusting assembly 40 is arranged between the first lifting plate 11 and the bottom plate 2, and the filing angle adjusting assembly 40 can drive the first lifting plate 11 to move up and down;
the clamping mechanism 39 is arranged between the first lifting plate 11 and the top plate 14 and comprises a second lifting plate 13 connected with the guide rod 10 in a sliding manner, clamping blocks 38 are arranged on two sides of the second lifting plate 13, a height adjusting assembly 41 is arranged between the second lifting plate 13 and the top plate 14, and the distance between the second lifting plate 13 and the top plate 14 can be adjusted through the height adjusting assembly 41;
actuating mechanism 29, including setting up in the first spout 3 at bottom plate 2 middle part, 3 sliding connection sliding seats 4 of first spout, the middle part of sliding seat 4 is rotated and is connected and rotate seat 32, rotate the middle part sliding connection slide bar 7 of seat 32, the tip fixed connection mount 8 of slide bar 7, be equipped with reciprocal drive assembly 42 between sliding seat 4 and the bottom plate 2, reciprocal drive assembly 42 can drive and remove about sliding seat 4 to drive mount 8 through slide bar 7 and swing round pivot 12.
In one aspect of this embodiment, referring to fig. 5, the fixing frame 8 is U-shaped, a second sliding groove 26 is disposed on a side of the fixing frame 8 away from the bottom plate 2, the second sliding groove 26 is slidably connected to two ends of the supporting plate 16, a first fixing plate 28 is disposed on an end of the fixing frame 8 away from the bottom plate 2, a first spring 27 is disposed between the first fixing plate 28 and the supporting plate 16, and the supporting plate 16 can slightly float relative to the fixing frame 8 by the first spring 27, so that a continuous pressure is generated between the file 17 and the metal member during the filing process.
In one aspect of the present embodiment, referring to fig. 3, the filing angle adjusting assembly 40 includes a first screw 9 rotatably connected to the base plate 2, and a middle portion of the first screw 9 is threadedly coupled to an end portion of the first elevating plate 11. One side of the bottom plate 2 is provided with an installation seat 22, the installation seat 22 is rotatably connected with a rotating rod 23, the end part of the rotating rod 23 is provided with a fifth bevel gear 24, the fifth bevel gear 24 is meshed with a sixth bevel gear 25, and the sixth bevel gear 25 is fixedly connected with the first screw rod 9. The first screw rod 9 is rotated by rotating the rotating rod 23, so that the whole first lifting plate 11 can move up and down, and the rotating axis of the fixing frame 8 can move up and down.
In one aspect of the present embodiment, referring to fig. 4, the height adjustment assembly 41 includes a second lead screw 18 rotatably connected to the top plate 14, and a middle portion of the second lead screw 18 is threadedly connected to an end portion of the second lifting plate 13. A second driving motor 21 is arranged on one side of the top plate 14, an output shaft of the second driving motor 21 is fixedly connected with a third bevel gear 20, the third bevel gear 20 is meshed with a fourth bevel gear 19, and the fourth bevel gear 19 is fixedly connected with the end part of the second screw rod 18. The third bevel gear 20 is a gear with missing teeth. By setting the third bevel gear 20 as a gear with missing teeth, the third bevel gear 20 and the fourth bevel gear 19 can be intermittently engaged and driven during the rotation of the second driving motor 21 at a fixed speed, so that the second lead screw 18 can be intermittently rotated, and the second lifting plate 13 can be intermittently moved.
In a situation of this embodiment, referring to fig. 2, two sides of the second lifting plate 13 are slidably connected to the clamping blocks 38, a third fixing plate 36 is disposed on the second lifting plate 13, a second spring 37 is disposed between the third fixing plate 36 and the clamping blocks 38, and the second spring 37 is in a compressed state. The second spring 37 pushes the two clamping blocks 38 to move closer to each other, so that the metal piece is subjected to the process work of clamping by the two clamping blocks 38. The middle part of the top plate 14 is provided with a relief groove 15 matched with the clamping mechanism 39, so that the metal piece can extend out of the upper surface of the top plate 14, and filing processing of the metal piece is facilitated.
In one aspect of the present embodiment, referring to fig. 6-8, the reciprocating driving assembly 42 includes a second fixing plate 31 disposed on one side of the base plate 2, the second fixing plate 31 is rotatably connected to the rotating disc 6, an outer side of the rotating disc 6 is rotatably connected to one end of the supporting rod 5, and the other end of the supporting rod 5 is rotatably connected to the sliding seat 4. The second fixing plate 31 is provided with a first driving motor 33, an output shaft of the first driving motor 33 is fixedly connected with a first bevel gear 34, the first bevel gear 34 is engaged with a second bevel gear 35, and the second bevel gear 35 is coaxially connected with the rotating disc 6. The first driving motor 33 is connected with the first bevel gear 34 and the second bevel gear 35 through meshing to drive the rotating disc 6 to rotate, so that the sliding seat 4 can continuously move left and right through the structure that the rotating disc 6, the supporting rod 5 and the sliding seat 4 form a crank block.
In the implementation process of the embodiment, the supporting legs 1 are arranged at four corners of the lower surface of the bottom plate 2, so that the whole device can be stably placed on the ground, at this time, the clamping blocks 38 can be moved to the left and right sides to separate the two clamping blocks 38, a metal part to be filed is placed in the middle of the upper surface of the second lifting plate 13, the clamping blocks 38 are released, under the action of the second spring 37, the metal part is fixed in the middle of the second lifting plate 13 by the two clamping blocks 38, the rotating rod 23 is rotated to enable the first lead screw 9 to drive the first lifting plate 11 to move up and down, so as to adjust the up and down position of the fixed frame 8, when the fixed frame 8 moves up, the rotating position of the fixed frame 8 also moves up, and the sliding rod 7 in the sliding seat 4 also moves up, so that when the sliding seat 4 moves a fixed distance, the rotating angle of the fixed frame 8 decreases, on the contrary, when the fixed frame 8 moves downwards, after the sliding seat 4 moves for a fixed distance, the rotating angle of the fixed frame 8 is increased, so that the proper height of the fixed frame 8 can be selected according to the required filing arc angle of the metal piece, and after the height adjustment of the fixed frame 8 is completed, the whole equipment can perform filing treatment.
Starting the first driving motor 33, the output shaft of the first driving motor 33 drives the rotating disc 6 to rotate through the first bevel gear 34 and the second bevel gear 35 which are connected in a meshed manner, the rotating disc 6 pushes the sliding seat 4 to move left and right through the supporting rod 5, the sliding seat 4 drives the fixed frame 8 to swing left and right through the sliding rod 7, meanwhile, the second driving motor 21 is started, the output shaft of the second driving motor 21 drives the second screw rod 18 to rotate through the third bevel gear 20 and the fourth bevel gear 19 which are connected in a meshed manner, so that the second lifting plate 13 drives the metal piece to intermittently move upwards to enable the metal piece to be in contact with the swinging file 17, the file 17 performs file processing on the top of the metal piece, and the file 17 performs one-side file processing on the top of the metal piece after the metal piece is moved upwards by adjusting the rotation of the first driving motor 33 and the second driving motor 21, after the top of the metal piece is filed after the equipment works for a period of time, the whole equipment can be stopped.
The invention is suitable for metal piece filing equipment, the file 17 can file the cambered surface of a metal piece through the swinging of the fixing frame 8, and the filing angle can be changed through adjusting the height of the fixing frame 8, so that the whole equipment is more convenient to use.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. The metal piece filing equipment is characterized by comprising a bottom plate, a driving mechanism, a filing mechanism and a clamping mechanism;
the filing mechanism is arranged on one side, away from the ground, of the bottom plate and comprises a guide rod fixedly connected with the bottom plate, the end part of the guide rod is fixedly connected with the top plate, the middle part of the guide rod is connected with a first lifting plate in a sliding mode, the middle part of the first lifting plate is rotatably connected with a rotating shaft, two ends of the rotating shaft are fixedly connected with a fixing frame, a supporting plate is arranged on one side, away from the bottom plate, of the fixing frame, a file is arranged in the middle part of one side, close to the bottom plate, of the supporting plate, and a filing angle adjusting assembly is arranged between the first lifting plate and the bottom plate;
the clamping mechanism is arranged between the first lifting plate and the top plate and comprises a second lifting plate in sliding connection with the guide rod, clamping blocks are arranged on two sides of the second lifting plate, and a height adjusting assembly is arranged between the second lifting plate and the top plate;
actuating mechanism, including setting up in the first spout in bottom plate middle part, first spout sliding connection sliding seat, the middle part of sliding seat rotates to connect and rotates the seat, rotates the middle part sliding connection slide bar of seat, and the tip fixed connection mount of slide bar is equipped with reciprocal drive assembly between sliding seat and the bottom plate.
2. The metal part filing device of claim 1, wherein the fixing frame is U-shaped, a second sliding groove is formed on a side of the fixing frame away from the bottom plate, the second sliding groove is slidably connected with two ends of the supporting plate, a first fixing plate is arranged on an end portion of the fixing frame away from the bottom plate, and a first spring is arranged between the first fixing plate and the supporting plate.
3. The metal piece filing device of claim 1, wherein the filing angle adjusting unit comprises a first screw rotatably coupled to the base plate, and a middle portion of the first screw is threadedly coupled to an end portion of the first elevating plate.
4. The metal part filing device of claim 3, wherein a mounting seat is provided at one side of the base plate, the mounting seat is rotatably connected to a rotating rod, a fifth bevel gear is provided at an end of the rotating rod, the fifth bevel gear is engaged with a sixth bevel gear, and the sixth bevel gear is fixedly connected to the first screw rod.
5. The metal piece filing device of claim 1, wherein the height adjustment assembly comprises a second screw rotatably coupled to the top plate, a middle portion of the second screw being threadedly coupled to an end portion of the second lifting plate.
6. The metal piece filing device of claim 5, wherein a second driving motor is provided at one side of the top plate, an output shaft of the second driving motor is fixedly connected with a third bevel gear, the third bevel gear is engaged with a fourth bevel gear, and the fourth bevel gear is fixedly connected with an end of a second screw rod.
7. The metal piece filing device of claim 6, wherein the third bevel gear is a missing tooth gear.
8. The metal part filing device of claim 1, wherein the second lifting plate is slidably connected to the clamping block at both sides thereof, the second lifting plate is provided with a third fixing plate, and a second spring is provided between the third fixing plate and the clamping block, the second spring being in a compressed state.
9. The metal part filing apparatus of claim 1, wherein the reciprocating driving assembly comprises a second fixing plate disposed at one side of the base plate, the second fixing plate being rotatably connected to the rotating disc, an outer side of the rotating disc being rotatably connected to one end of the supporting rod, and the other end of the supporting rod being rotatably connected to the sliding base.
10. The metal part filing device of claim 9, wherein the second fixing plate is provided with a first driving motor, an output shaft of the first driving motor is fixedly connected with a first bevel gear, the first bevel gear is engaged with a second bevel gear, and the second bevel gear is coaxially connected with the rotating disc.
CN202110834957.6A 2021-07-23 2021-07-23 Metal part filing equipment Active CN113275661B (en)

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Application Number Priority Date Filing Date Title
CN202110834957.6A CN113275661B (en) 2021-07-23 2021-07-23 Metal part filing equipment

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Application Number Priority Date Filing Date Title
CN202110834957.6A CN113275661B (en) 2021-07-23 2021-07-23 Metal part filing equipment

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CN113275661A CN113275661A (en) 2021-08-20
CN113275661B true CN113275661B (en) 2021-09-17

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114235019A (en) * 2021-12-13 2022-03-25 山东省地质矿产勘查开发局第七地质大队(山东省第七地质矿产勘查院) Hydraulic ring geological environment monitoring equipment mounting structure

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US4048759A (en) * 1976-11-10 1977-09-20 Christon Robert H Turntable support structure for radius mills and the like
CN104708042A (en) * 2013-12-12 2015-06-17 铜陵市永生机电制造有限责任公司 Method for turning arc surface through file
CN205218788U (en) * 2015-12-21 2016-05-11 蓝思科技(长沙)有限公司 Double arc curved surface burnishing machine
CN107855839A (en) * 2017-11-24 2018-03-30 马鞍山市利成刀片制造厂 A kind of circular arc blade lapping device
CN212071465U (en) * 2019-12-31 2020-12-04 泉州康馨专利应用服务有限公司 Horizontal automatic grinding machine
CN112572717A (en) * 2020-12-17 2021-03-30 韩洋 Automatic removing device for ship biofouling
CN113020928A (en) * 2021-03-04 2021-06-25 罗凯玲 Razor blade production facility

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Publication number Priority date Publication date Assignee Title
US4048759A (en) * 1976-11-10 1977-09-20 Christon Robert H Turntable support structure for radius mills and the like
CN104708042A (en) * 2013-12-12 2015-06-17 铜陵市永生机电制造有限责任公司 Method for turning arc surface through file
CN205218788U (en) * 2015-12-21 2016-05-11 蓝思科技(长沙)有限公司 Double arc curved surface burnishing machine
CN107855839A (en) * 2017-11-24 2018-03-30 马鞍山市利成刀片制造厂 A kind of circular arc blade lapping device
CN212071465U (en) * 2019-12-31 2020-12-04 泉州康馨专利应用服务有限公司 Horizontal automatic grinding machine
CN112572717A (en) * 2020-12-17 2021-03-30 韩洋 Automatic removing device for ship biofouling
CN113020928A (en) * 2021-03-04 2021-06-25 罗凯玲 Razor blade production facility

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Address after: 257000 Room 204, building 1, No. 23, Gangcheng Road, dongyinggang Economic Development Zone, Dongying City, Shandong Province

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Address before: 257399 No.65 Guangkai Road, Guangrao Economic Development Zone, Guangrao County, Dongying City, Shandong Province

Patentee before: Shandong Hepeng Technology Co., Ltd