CN106077822A - Aimplant-lunber edge hypotenuse processing unit (plant) - Google Patents

Aimplant-lunber edge hypotenuse processing unit (plant) Download PDF

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Publication number
CN106077822A
CN106077822A CN201610669985.6A CN201610669985A CN106077822A CN 106077822 A CN106077822 A CN 106077822A CN 201610669985 A CN201610669985 A CN 201610669985A CN 106077822 A CN106077822 A CN 106077822A
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CN
China
Prior art keywords
wind file
wind
edge
lunber
aimplant
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Granted
Application number
CN201610669985.6A
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Chinese (zh)
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CN106077822B (en
Inventor
赵友磊
杜婵婵
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Shandong Taikoo Aircraft Engineering Co Ltd
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Shandong Taikoo Aircraft Engineering Co Ltd
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Priority to CN201610669985.6A priority Critical patent/CN106077822B/en
Publication of CN106077822A publication Critical patent/CN106077822A/en
Application granted granted Critical
Publication of CN106077822B publication Critical patent/CN106077822B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • B23D67/10Filing or rasping machines or devices for special use, e.g. for filing keys; Accessories therefor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

A kind of aimplant-lunber edge hypotenuse processing unit (plant), including: plate clamping device, for the sheet material horizontal-clamping of hypotenuse to be processed is fixed;Wind file fixing device, is used for fixing wind file;Angular adjustment apparatus, it is connected with wind file fixing device, for adjusting the angle of wind file;And wind file position regulator, it is connected with angular adjustment apparatus, is used for driving wind file left and right directions and fore-and-aft direction regulation.When needs carry out edge cutting to sheet material, wind file is filed fixing device fixation by wind, by plate clamping device by sheet material horizontal-clamping, leading to angular adjustment apparatus afterwards, wind file is adjusted to proper angular position, the edge hypotenuse angle making the sheet material of wind file processing is consistent with requirement, wind file is driven first to travel forward eventually through wind file position regulator, make it contact with sheet edge, make wind file horizontal movement afterwards, it is achieved sheet edge completion of processing.

Description

Aimplant-lunber edge hypotenuse processing unit (plant)
Technical field
The present invention relates to a kind of aimplant-lunber edge hypotenuse processing unit (plant).
Background technology
Aircraft skin, floor and structural member are implemented superimposed plates generally as sticking patch and are repaired by aimplant-lunber, repair for eliminating Stress concentration phenomenon after the sticking patch superposition of region strengthens fatigue resistance and ensures to install the flatness after implementing and aircraft outer surface Pneumatic flatness, need sheet edge cutting hypotenuse to realize above-mentioned purpose.First not yet have special tooling device for This type of technique is processed, and the worker of mostly being utilizes general utility tool to be by virtue of experience processed, this kind of working method Work efficiency is more low, hypotenuse gradient and size is undesirable even workshop is caused damage after often ultimately resulting in processing Wound, ultimately results in workpiece and scraps or do over again, and structural elements or even airborne vehicle for institute's repair area bring safely hidden danger.
Summary of the invention
The present invention is in order to overcome the deficiency of above technology, it is provided that a kind of work improving aimplant-lunber hypotenuse plane machining The aimplant-lunber edge hypotenuse processing unit (plant) of efficiency and precision.
The present invention overcomes its technical problem be the technical scheme is that
A kind of aimplant-lunber edge hypotenuse processing unit (plant), including:
Plate clamping device, for fixing the sheet material horizontal-clamping of hypotenuse to be processed;
Wind file fixing device, is used for fixing wind file;
Angular adjustment apparatus, it is connected with wind file fixing device, for adjusting the angle of wind file;And
Wind file position regulator, it is connected with angular adjustment apparatus, is used for driving wind file left and right directions and fore-and-aft direction regulation.
Above-mentioned plate clamping device includes the two groups of linkages being positioned at two ends, left and right, and described linkage is by centre position Hinged in inverted v-shaped mechanism two of bearing pin I are led to by hinged two clamp arms in X character form structure of pin shaft II and top Brace is constituted, and the lower end of the upper end of two clamp arms and the two of homonymy support arms is respectively by pin shaft III and U-shaped hinge Installing, two clamp arm lower ends are respectively articulated with and are provided with sheet material deck and are rotatablely equipped with ratchet, inside described sheet material deck End is provided with profile of tooth groove, and linkage driving means drives the angle between two clamp arms the most hinged in X font to increase Big or reduce.
Above-mentioned wind file position regulator includes the cunning being horizontally installed between the sheet material deck of two linkage lower ends Bar, the wind being slidably mounted on slide bar file top base, the dovetail groove being arranged at wind file top base lower end along the longitudinal direction and wind File pedestal, described wind file pedestal is slided by the dovetail guide that its upper end is arranged and is plugged in dovetail groove, and wind file pedestal drives machine Structure drives wind file pedestal apparent wind file top base fore-and-aft direction motion.
Above-mentioned angular adjustment apparatus includes that N number of sector that along the circumferential direction uniform intervals is arranged at outside wind file pedestal is recessed Groove, along the circumferential direction uniform intervals are arranged at the N number of fan-shaped boss inside wind file fixing device and rotation is arranged at file pedestal In and be combined on the clamping screw I in wind file fixing device, each fan-shaped boss of described wind file fixing device is plugged in respectively In corresponding scalloped recess, the angle of described scalloped recess is more than the angle of fan-shaped boss.
Above-mentioned wind file fixing device includes that aperture is more than the wind file cutting ferrule of wind file external diameter, is arranged at the screw thread that wind file card puts Hole II, the clamping screw II being combined in screwed hole II, it is arranged at the joystick knob III of clamping screw II head end and is arranged at The bulb of clamping screw II tail end, is provided with the friction lock sheet of circular arc, on described friction lock sheet in described wind file cutting ferrule Being provided with ball groove, described bulb active card is placed in ball groove.
Aforementioned link mechanism driving means include the screwed hole I being arranged on U-shaped hinge, respectively be combined on often group connecting rod machine Threaded rod in the upper screwed hole I of two U-shaped hinges in structure, it is arranged between two U-shaped hinges and is plugged on threaded rod Spring and be arranged at the joystick knob I of threaded rod head end.
In order to improve the wearability of ratchet, above-mentioned ratchet is made up of nylon material.
In order to improve wearability, between above-mentioned ratchet and rotating shaft, it is provided with lining.
In order to be applicable to the sheet material after difference, width and the degree of depth of each teeth groove of above-mentioned ratchet are different.
Above-mentioned wind file pedestal drive mechanism includes along the half-thread hole II that dovetail groove length direction is arranged in dovetail groove, edge Half-thread hole I that dovetail guide length direction is arranged on dovetail guide and adjust bolt, described half-thread hole I and half-thread Hole II is formed after overlapping and adjusts the complete screw that bolt matches, and described adjustment bolt level is combined on half-thread hole I and half spiral shell In pit II, its head end is provided with joystick knob II.
The invention has the beneficial effects as follows: when needs carry out edge cutting to sheet material, wind file is filed fixing device by wind Fixation, by plate clamping device by sheet material horizontal-clamping, leads to angular adjustment apparatus afterwards, and wind file is adjusted to suitable angular Degree position, the edge hypotenuse angle making the sheet material of wind file processing is consistent with requirement, drives eventually through wind file position regulator Wind file first travels forward so that it is contact with sheet edge, makes wind file horizontal movement afterwards, it is achieved sheet edge completion of processing.
Accompanying drawing explanation
Fig. 1 is the exploded perspective structural representation of the present invention;
Fig. 2 is the stereoscopic mechanism schematic diagram of the present invention;
Fig. 3 is the structural representation that wind frustrates pedestal position;
In figure, 1. support arm 2. bearing pin I 3. clamp arm 4. pin shaft II 5.U type hinge 6. pin shaft III 7. threaded rod 8. revolves Button handle I 9. spring 10. screwed hole I 11. rotating shaft 12. ratchet 13. lining 14. sheet material deck 15. serrate slot 16. is sliding Bar 17. wind file top base 18. wind file pedestal 19. adjusts bolt 20. joystick knob II 21. wind file cutting ferrule 22. friction lock Tight half-thread hole II 28., sheet 23. joystick knob III 24. dovetail guide 25. dovetail groove 26. half-thread hole I 27. locking screw Fan-shaped boss 34. screwed hole II 35. plate of bolt I 29. ball groove 30. clamping screw II 31. bulb 32. scalloped recess 33. Material.
Detailed description of the invention
Below in conjunction with the accompanying drawings 1, accompanying drawing 2, the present invention will be further described for accompanying drawing 3.
A kind of aimplant-lunber edge hypotenuse processing unit (plant), including: plate clamping device, for by the sheet material of hypotenuse to be processed 35 horizontal-clampings are fixed;Wind file fixing device, is used for fixing wind file;Angular adjustment apparatus, it is connected with wind file fixing device, uses In the angle adjusting wind file;And wind file position regulator, it is connected with angular adjustment apparatus, is used for driving wind to file right and left To and fore-and-aft direction regulation.When needs carry out edge cutting to sheet material 35, wind file is filed fixing device fixation by wind, By plate clamping device by sheet material 35 horizontal-clamping, lead to angular adjustment apparatus afterwards, wind file be adjusted to proper angular position, The edge hypotenuse angle making the sheet material 35 of wind file processing is consistent with requirement, drives wind file first eventually through wind file position regulator Travel forward so that it is with sheet material 35 EDGE CONTACT, make wind file horizontal movement afterwards, it is achieved sheet material 35 edge completion of processing.
Plate clamping device can be following structure, they two groups of linkages including being positioned at two ends, left and right, linkage Bearing pin I 2 is led to by hinged two clamp arms 3 in X character form structure of pin shaft II 4 and top hinged in V by centre position Two support arms 1 of font mechanism are constituted, and the lower end of the upper end of two clamp arms 3 and the two of homonymy support arms 1 is passed through respectively Pin shaft III 6 and the U-shaped hinged installation of hinge 5, two clamp arm 3 lower ends are respectively articulated with and are provided with sheet material deck 14 and rotate peace Equipped with ratchet 12, sheet material deck 14 medial extremity is provided with profile of tooth groove 15, and linkage driving means drives two mutually in X word Angle between the clamp arm 3 that shape is hinged increases or reduces.By driving rod drive drive link mechanism's horizontal spreading or receipts Contracting, the angle between the clamp arm 3 that X font is hinged increases or reduces, and the angle between the clamp arm 3 that X font is hinged reduces Time, sheet material 35 can be stepped up by it, when the angle between the clamp arm 3 that X font is hinged increases, can be removed by sheet material 35. Further, linkage driving means includes the screwed hole I 10 being arranged on U-shaped hinge 5, is combined on and often organizes connecting rod respectively Threaded rod 7 in the upper screwed hole I 10 of two U-shaped hinges 5 in mechanism, it is arranged between two U-shaped hinges 5 and is plugged in Spring 9 on threaded rod 7 and be arranged at the joystick knob I 8 of threaded rod 7 head end.When rotary knob handle I 8 drives screw thread Bar 7 rotates, and then U-shaped hinge 5 is axially movable, finally realizes two clamping upper-arm circumference pin shaft II under the elastic force that spring 9 provides The open and close movement around pin joint of 4.In the process, two support arms 1 jointly realize symmetrical open and close movement and finally realize two The adjustment of the lower ending opening end opening size that individual clamp arm 3 is surrounded.In order to improve the wearability of ratchet 12, it is preferred that ratchet 12 are made up of nylon material.Can be provided with lining 13 between ratchet 12 and rotating shaft 11, lining 13 can improve ratchet 12 and turn Wearability between axle 11, further increases service life.Width and the degree of depth of each teeth groove of ratchet 12 are different, because of This, by by ratchet 12 different rotation angle, makes the teeth groove of different size insert in sheet material 35, can realize different-thickness sheet material The purpose all can mated, improves the scope of application.
Wind file position regulator can be following structure, it sheet material including being horizontally installed to two linkage lower ends Slide bar 16 between deck 14, the wind being slidably mounted on slide bar 16 file top base 17, it is arranged at the upper base of wind file along the longitudinal direction The seat dovetail groove 25 of 17 lower ends and wind file pedestal 18, wind file pedestal 18 is slided plug-in mounting by the dovetail guide 24 that its upper end is arranged In dovetail groove 25, wind file pedestal drive mechanism drives wind file pedestal 18 apparent wind file top base 17 fore-and-aft direction motion.Work as wind File after fixing by wind file fixing device and adjust angle by angular adjustment apparatus, by driving wind file pedestal 18 edge Wind file top base 17 travel forward, make wind file with sheet material 35 EDGE CONTACT, rear drive wind file top base 17 along slide rail 16 level Slide so that wind is filed along sheet material 35 border movement, thus complete sheet edge cutting.Further, wind file pedestal drive mechanism Including the half-thread hole II 27 being arranged in dovetail groove 25 along dovetail groove 25 length direction, set along dovetail guide 24 length direction The half-thread hole I 26 being placed on dovetail guide 24 and adjustment bolt 19, half-thread hole I 26 overlaps with half-thread hole II 27 The complete screw that rear formation matches with adjustment bolt 19, adjusts bolt 19 level and is combined on half-thread hole I 26 and half-thread hole II In 27, its head end is provided with joystick knob II 20.Adjustment bolt 19 is driven to rotate by rotary knob handle II 20, so that Wind file pedestal 18 apparent wind file top base 17 fore-and-aft direction motion, guiding mechanism uses simple and convenient.
Angular adjustment apparatus can be following structure, and it includes that along the circumferential direction uniform intervals is arranged at outside wind file pedestal 18 N number of scalloped recess 32 of side, along the circumferential direction uniform intervals be arranged at the N number of fan-shaped boss 33 inside wind file fixing device and Rotate in being arranged at file pedestal 18 and be combined on the clamping screw I 28 in wind file fixing device, each fan of wind file fixing device Shape boss 33 is plugged in corresponding scalloped recess 32 respectively, and the angle of scalloped recess 32 is more than the angle of fan-shaped boss 33.By Being plugged in scalloped recess 32 by fan-shaped boss 33 in wind file fixing device, therefore it can rotate, but owing to sector is recessed The angle of groove 32 more than the angle of fan-shaped boss 33, therefore wind file fixing device can only scalloped recess 32 and fan-shaped boss 33 it Between differential seat angle in the range of movable, serve angle limit effect.
Wind file fixing device can be following structure, and it includes that aperture is more than the wind file cutting ferrule 21 of wind file external diameter, is arranged at Wind is filed screwed hole II 34, the clamping screw II 30 being combined in screwed hole II 34 on cutting ferrule 21, is arranged at clamping screw II The joystick knob III 23 of 30 head ends and be arranged at the bulb 31 of clamping screw II 30 tail end, is provided with circle in wind file cutting ferrule 21 The friction lock sheet 22 of arc, friction lock sheet 22 is provided with ball groove 29, and bulb 31 active card is placed in ball groove 29.Need solid During subduing the wind syndrome file, wind file is inserted in wind file cutting ferrule 21, rotary knob handle III 23 afterwards, makes clamping screw II 30 rotate, Friction lock sheet 22 is further driven to move closer to wind file, until wind file is locked by it, owing to friction lock sheet 22 leads to Crossing ball groove 29 to be flexibly connected with bulb 31, therefore its packaging friction lock sheet 22 completely attaches to wind file, improves locking frictional force.

Claims (10)

1. an aimplant-lunber edge hypotenuse processing unit (plant), it is characterised in that including:
Plate clamping device, for fixing sheet material (35) horizontal-clamping of hypotenuse to be processed;
Wind file fixing device, is used for fixing wind file;
Angular adjustment apparatus, it is connected with wind file fixing device, for adjusting the angle of wind file;And
Wind file position regulator, it is connected with angular adjustment apparatus, is used for driving wind file left and right directions and fore-and-aft direction regulation.
Aimplant-lunber edge the most according to claim 1 hypotenuse processing unit (plant), it is characterised in that: described plate clamping device Including being positioned at two groups of linkages at two ends, left and right, described linkage is hinged in X font by pin shaft II (4) by centre position Two clamp arms (3) of structure and top lead to hinged two support arms (1) in inverted v-shaped mechanism of bearing pin I (2) and constitute, and two The upper end of individual clamp arm (3) and the lower end of the two of homonymy support arms (1) are hinged with U-shaped hinge (5) by pin shaft III (6) respectively Installing, two clamp arm (3) lower ends are respectively articulated with and are provided with sheet material deck (14) and are rotatablely equipped with ratchet (12), described plate Material deck (14) medial extremity is provided with profile of tooth groove (15), and linkage driving means driving two is the most hinged in X font Angle between clamp arm (3) increases or reduces.
Aimplant-lunber edge the most according to claim 2 hypotenuse processing unit (plant), it is characterised in that: the file position adjustment of described wind Device includes the slide bar (16) being horizontally installed between the sheet material deck (14) of two linkage lower ends, is slidably mounted on slide bar (16) wind file top base (17) on, the dovetail groove (25) being arranged at wind file top base (17) lower end along the longitudinal direction and wind file Pedestal (18), the dovetail guide (24) that described wind file pedestal (18) is arranged by its upper end slides and is plugged in dovetail groove (25), Wind file pedestal drive mechanism drives wind file pedestal (18) apparent wind file top base (17) fore-and-aft direction motion.
Aimplant-lunber edge the most according to claim 3 hypotenuse processing unit (plant), it is characterised in that: described angular adjustment apparatus N number of scalloped recess (32), the most uniform in wind file pedestal (18) outside it is arranged at including along the circumferential direction uniform intervals It is arranged at intervals at the N number of fan-shaped boss (33) inside wind file fixing device and rotation is arranged in filing pedestal (18) and is combined on Clamping screw I (28) in wind file fixing device, each fan-shaped boss (33) of described wind file fixing device is plugged in phase respectively In the scalloped recess (32) answered, the angle of described scalloped recess (32) is more than the angle of fan-shaped boss (33).
Aimplant-lunber edge the most as claimed in any of claims 1 to 4 hypotenuse processing unit (plant), it is characterised in that: institute State wind file fixing device and include wind file cutting ferrule (21) that aperture is more than wind file external diameter, the screwed hole being arranged on wind file cutting ferrule (21) II (34), the clamping screw II (30) being combined in screwed hole II (34), the knob hands being arranged at clamping screw II (30) head end Handle III (23) and be arranged at the bulb (31) of clamping screw II (30) tail end, is provided with circular arc in described wind file cutting ferrule (21) Friction lock sheet (22), described friction lock sheet (22) is provided with ball groove (29), described bulb (31) active card is placed in ball In groove (29).
Aimplant-lunber edge the most according to claim 2 hypotenuse processing unit (plant), it is characterised in that: described linkage drives Device include the screwed hole I (10) being arranged on U-shaped hinge (5), respectively be combined on often group linkage in two U-shaped hinges (5) the threaded rod (7) in upper screwed hole I (10), it is arranged between two U-shaped hinges (5) and is plugged on threaded rod (7) Spring (9) and be arranged at the joystick knob I (8) of threaded rod (7) head end.
Aimplant-lunber edge the most according to claim 2 hypotenuse processing unit (plant), it is characterised in that: described ratchet (12) is by Buddhist nun Dragon material is made.
Aimplant-lunber edge the most according to claim 2 hypotenuse processing unit (plant), it is characterised in that: described ratchet (12) with turn Lining (13) it is provided with between axle (11).
Aimplant-lunber edge the most according to claim 2 hypotenuse processing unit (plant), it is characterised in that: described ratchet (12) each Width and the degree of depth of individual teeth groove are different.
Aimplant-lunber edge the most according to claim 3 hypotenuse processing unit (plant), it is characterised in that: described wind file pedestal drives Motivation structure includes along the half-thread hole II (27) that dovetail groove (25) length direction is arranged in dovetail groove (25), along dovetail guide (24) length direction is arranged on dovetail guide (24) half-thread hole I (26) and adjust bolt (19), described half-thread hole I (26) the complete screw that bolt (19) matches, described adjustment bolt (19) water are formed and adjust with half-thread hole II (27) after overlapping The flat half-thread hole I (26) that is combined on is with in half-thread hole II (27), and its head end is provided with joystick knob II (20).
CN201610669985.6A 2016-08-16 2016-08-16 Aimplant-lunber edge hypotenuse processing unit (plant) Active CN106077822B (en)

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CN106077822B CN106077822B (en) 2017-10-31

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107065117A (en) * 2017-06-20 2017-08-18 苏州艾力光电科技有限公司 A kind of connecting rod adjustment mechanism
CN107272513A (en) * 2017-07-31 2017-10-20 北京航空航天大学 Three dimensional rotation force feedback equipment
CN109277640A (en) * 2018-11-29 2019-01-29 浙江雷尼摩申精密机械股份有限公司 The cylinder thin-walled of metal etch ultra micro protrusion is filed
CN109277640B (en) * 2018-11-29 2024-06-04 明光市永鼎五金制品有限公司 Cylinder thin-wall file with metal etching superfine bulge

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Publication number Priority date Publication date Assignee Title
JPH0569318A (en) * 1991-09-09 1993-03-23 Asahi Glass Co Ltd Method and device for chamfering plate material
CN2180435Y (en) * 1993-12-31 1994-10-26 瑞安市城关花岗石厂 Moveable stone cutting machine with lifting power head
CN2215973Y (en) * 1994-09-30 1995-12-27 哈尔滨工业大学 irregular curve cutting and edge chamfering machine
CN201834672U (en) * 2010-09-26 2011-05-18 扬州诚德重工有限公司 Novel universal clamp
CN202742166U (en) * 2012-08-31 2013-02-20 叶仁君 Numerical control clamping jaw chamfering and beveling machine
CN205294625U (en) * 2015-12-01 2016-06-08 重庆福丹环保建材有限公司 Prefabricated plate stone tongs
CN205927351U (en) * 2016-08-16 2017-02-08 山东太古飞机工程有限公司 Aircraft sheet material edge hypotenuse processingequipment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0569318A (en) * 1991-09-09 1993-03-23 Asahi Glass Co Ltd Method and device for chamfering plate material
CN2180435Y (en) * 1993-12-31 1994-10-26 瑞安市城关花岗石厂 Moveable stone cutting machine with lifting power head
CN2215973Y (en) * 1994-09-30 1995-12-27 哈尔滨工业大学 irregular curve cutting and edge chamfering machine
CN201834672U (en) * 2010-09-26 2011-05-18 扬州诚德重工有限公司 Novel universal clamp
CN202742166U (en) * 2012-08-31 2013-02-20 叶仁君 Numerical control clamping jaw chamfering and beveling machine
CN205294625U (en) * 2015-12-01 2016-06-08 重庆福丹环保建材有限公司 Prefabricated plate stone tongs
CN205927351U (en) * 2016-08-16 2017-02-08 山东太古飞机工程有限公司 Aircraft sheet material edge hypotenuse processingequipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107065117A (en) * 2017-06-20 2017-08-18 苏州艾力光电科技有限公司 A kind of connecting rod adjustment mechanism
CN107272513A (en) * 2017-07-31 2017-10-20 北京航空航天大学 Three dimensional rotation force feedback equipment
CN107272513B (en) * 2017-07-31 2019-04-19 北京航空航天大学 Three dimensional rotation force feedback equipment
CN109277640A (en) * 2018-11-29 2019-01-29 浙江雷尼摩申精密机械股份有限公司 The cylinder thin-walled of metal etch ultra micro protrusion is filed
CN109277640B (en) * 2018-11-29 2024-06-04 明光市永鼎五金制品有限公司 Cylinder thin-wall file with metal etching superfine bulge

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