CN103659480A - Gear grinding machine - Google Patents
Gear grinding machine Download PDFInfo
- Publication number
- CN103659480A CN103659480A CN201310648851.2A CN201310648851A CN103659480A CN 103659480 A CN103659480 A CN 103659480A CN 201310648851 A CN201310648851 A CN 201310648851A CN 103659480 A CN103659480 A CN 103659480A
- Authority
- CN
- China
- Prior art keywords
- mount pad
- emery wheel
- gear grinding
- main shaft
- dressing tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
- B24B3/52—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of shear blades or scissors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
- B24B53/07—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels by means of forming tools having a shape complementary to that to be produced, e.g. blocks, profile rolls
Abstract
The invention discloses a gear grinding machine. The gear grinding machine comprises a base. A spindle installation seat is installed on the base. A motor and a spindle are installed on the spindle installation seat. A grinding wheel is installed on the spindle. A worktable and a dressing wheel installation seat are installed on the base. A dressing wheel is installed on the dressing wheel installation seat. Dressing lines are densely distributed outside the dressing wheel. A workpiece installation seat is hinged to the worktable. An air cylinder is installed on the worktable. The workpiece installation seat is hinged to an output shaft of the air cylinder. A servo motor, a first screw rod and a second screw rod are installed on the base, wherein the first screw rod and the second screw rod are driven by the servo motor, and the dressing wheel installation seat and the worktable are driven by the first screw rod and the second screw rod respectively to move in the direction perpendicular to the spindle. The gear grinding machine is high in production efficiency, the abrasion loss of the grinding wheel can be automatically detected, and the distance between the worktable and the grinding wheel and the distance between the dressing wheel and the grinding wheel can be automatically adjusted.
Description
Technical field
The present invention relates to a kind of milling apparatus, particularly a kind of gear grinding machines.
Background technology
In daily life, use scissors when cutting harder object; usually there will be skidding; scissors can not usually can slide on object; be difficult to object to cut off; therefore be necessary to process intensive tooth on the blade of scissors; when cutting object, the tooth on scissors can be bitten object, there will not be skidding like this.
Have at present some gear grinding machines, be specifically designed to roll flute on instrument, this gear grinding machines generally comprise emery wheel, workbench and dressing tool.Emery wheel is after work a period of time, and its wearing and tearing can be more serious, and diameter can diminish, so just need to regulate the position of dressing tool, with dressing tool, emery wheel is repaired, and will be adjusted the distance between nearly workbench and emery wheel, to guarantee that emery wheel can be worked into the workpiece on workbench; But crushing each time all will re-start artificial adjustment, high to workman's qualification and skill requirement, production efficiency is lower, and operates cumbersome.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides that a kind of production efficiency is high, the wear extent that can automatically detect emery wheel gear grinding machines of distance between adjusting operating platform and emery wheel, dressing tool and emery wheel automatically.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of gear grinding machines, comprise base, main shaft mount pad is installed on described base, motor is installed and by motor-driven main shaft on described main shaft mount pad, on described main shaft, emery wheel is installed, described base is provided with workbench and dressing tool mount pad in the position corresponding to emery wheel, described dressing tool mount pad is rotatably provided with dressing tool in the position corresponding to emery wheel, the outside of described dressing tool is densely covered with the finishing line for emery wheel is repaired, described workbench is at the hinged workpiece assembling seat in the position corresponding to emery wheel, emery wheel is between workpiece assembling seat and dressing tool, on described workbench, be provided with for promoting the cylinder of workpiece assembling seat rotation, described workpiece assembling seat is hinged on the output shaft of cylinder, described workpiece assembling seat is hinged on the output shaft of cylinder, the guiding mechanism that can drive respectively dressing tool mount pad to move towards the direction vertical with main shaft with workbench is installed on described base.
In the present invention, be fixed with for accepting the brace table of workpiece assembling seat when the processing work on described base, described workpiece assembling seat is between cylinder and brace table.
In the present invention, described main shaft mount pad comprises the first mount pad and the second mount pad, and described emery wheel is between the first mount pad and the second mount pad.
In the present invention, on described base, be provided with slide rail, described the first mount pad is connected on slide rail, and described motor is arranged on the second mount pad.
In the present invention, be socketed with for propping up first sleeve pipe and second sleeve pipe of emery wheel to be fixed on described main shaft, described emery wheel is between the first sleeve pipe and the second sleeve pipe.
In the present invention, the outside screw of described the first sleeve pipe and/or the second sleeve pipe is connected with nut, and described the first sleeve pipe and/or the second sleeve pipe prop up emery wheel by nut.
In the present invention, described dressing tool mount pad is arranged on base by the first bearing, described the first bearing is provided with first guide rail parallel with main shaft, dressing tool mount pad is connected on the first guide rail, on described the first bearing, is provided with and can promotes the first adjusting device that dressing tool mount pad moves.
In the present invention, described workbench is arranged on base by the second bearing, and described the second bearing is provided with second guide rail parallel with main shaft, and workbench is connected on the second guide rail, and the second adjusting device can push work platform moving is installed on described the second bearing.
In the present invention, described the second bearing is suspended on the side of base.
In the present invention, the part that described workpiece assembling seat contacts with workpiece is made by magnet.
The invention has the beneficial effects as follows: in the present invention, dressing tool processes intensive tooth on emery wheel, and then emery wheel can process intensive tooth on workpiece.After abrasion of grinding wheel, the control system of gear grinding machines is controlled guiding mechanism work, workbench controlled by guiding mechanism and dressing tool mount pad moves towards the direction near emery wheel, the amount of movement of workbench and dressing tool mount pad can be controlled by control system, amount of movement is predefined according to the degree of wear of emery wheel, and dressing tool just can be repaired emery wheel after moving to precalculated position; While needing processing work, cylinder promotes workpiece assembling seat rotation, and workpiece is delivered on emery wheel and processed.The present invention, by controlling the amount of movement of workbench and dressing tool mount pad according to the degree of wear of emery wheel, allows the two be automatically moved to desired position, need to be by manually not regulating, regulate very conveniently, and can effectively enhance productivity.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further detailed explanation.
Fig. 1 is the structural representation of first embodiment of the invention;
Fig. 2 is the structural representation of first embodiment of the invention other direction.
The specific embodiment
The first embodiment
As shown in Fig. 1 ~ Fig. 2, a kind of gear grinding machines, comprise base 1, on described base 1, main shaft mount pad 2 are installed, and the main shaft 4 that motor 3 is installed and is driven by motor 3 on described main shaft mount pad 2 is provided with emery wheel 40 on described main shaft 4.As preferably, described main shaft mount pad 2 comprises the first mount pad 21 and the second mount pad 22, and the two ends of main shaft 4 are hung on the first mount pad 21 and the second mount pad 22.Described emery wheel 40 is between the first mount pad 21 and the second mount pad 22.As preferably, on described base 1, be provided with slide rail 23, described the first mount pad 21 is connected on slide rail 23, in the time of need to changing the emery wheel 40 on main shaft 4, the first mount pad 21 can be slided from slide rail 23, to be convenient for changing.Described motor 3 is arranged on the second mount pad 22, two end faces of described emery wheel 40 respectively butt have the first sleeve pipe 41 and the second sleeve pipe 42, on described main shaft 4, be socketed with for propping up first sleeve pipe 41 and second sleeve pipe 42 of emery wheel 40 to be fixed, described emery wheel 40 is between the first sleeve pipe 41 and the second sleeve pipe 42.By changing the length of the first sleeve pipe 41 and the second sleeve pipe 42, can change the position of emery wheel 40, thereby can easily emery wheel 40 be fixed on to desired position.The first sleeve pipe 41 can directly contact and prop up emery wheel 40 with emery wheel 40 with the second sleeve pipe 42, in addition can also be the outside screw attaching nut 43 of the first sleeve pipe 41 and/or the second sleeve pipe 42, described the first sleeve pipe 41 and/or the second sleeve pipe 42 prop up emery wheel 40 by nut 43.
Described base 1 is provided with workbench 5 and dressing tool mount pad 6 in the position corresponding to emery wheel 40, described dressing tool mount pad 6 is rotatably provided with dressing tool 61 in the position corresponding to emery wheel 40.
In the present embodiment, described dressing tool 61 can be a freeing wheel, and the outside of freeing wheel is densely covered with the finishing line for emery wheel 40 is repaired, and after freeing wheel contacts with emery wheel 40, by emery wheel 40, drives it to rotate, and finishing line is repaired emery wheel 40.Finishing line is that the annular boss of dense distribution in freeing wheel outside forms, and annular boss can process corresponding groove on emery wheel 40, and then emery wheel 40 just can have been processed workpiece 50.In the present embodiment, workpiece 50 is shear blade, and emery wheel 40 can grind intensive tooth on shear blade.
Described workbench 5 is hinged workpiece assembling seat 51 in the position corresponding to emery wheel 40, and described workpiece assembling seat 51 is made by magnet with the part that workpiece 50 contacts, the workpiece such as scissors 50 by magnet adsorption on workpiece assembling seat 51.Other fixed structure can also be set on workpiece assembling seat 51 in addition and fix workpiece 50.Emery wheel 40 is between workpiece assembling seat 51 and dressing tool 61, on described workbench 5, be provided with for promoting the cylinder 52 of workpiece assembling seat 51 rotations, described workpiece assembling seat 51 is hinged on the output shaft of cylinder 52, when the output shaft of cylinder 52 outwards moves, can promote workpiece assembling seat 51 rotates, make workpiece 50 turn to the position contacting with emery wheel 40, then emery wheel 40 just can be processed workpiece 50; After processing, the output shaft of cylinder 52 is retracted again, workpiece 50 can be retracted, and then just the workpiece processing 50 can be taken off.Servomotor 11, the first screw mandrel 12 being driven by servomotor 11 and the second screw mandrel 13 are installed on described base 1, the rotation direction of the screw thread on the first screw mandrel 12 and the second screw mandrel 13 on the contrary and on same straight line, described the first screw mandrel 12, the second screw mandrel 13 drive respectively dressing tool mount pad 6 to move towards the directions vertical with main shaft 4 with workbench 5.In the present invention, dressing tool 61 processes intensive tooth on emery wheel 40, and then emery wheel 40 can process intensive tooth on workpiece 50.After emery wheel 40 wearing and tearing, the control system of gear grinding machines is controlled servomotor 11 rotations, the first screw mandrel 12 and the second screw mandrel 13 drive respectively dressing tool mount pad 6 and workbench 5 to move towards the direction near emery wheel 40, the amount of movement of the two can be controlled by control system, and amount of movement is predefined according to the degree of wear of emery wheel 40.Dressing tool 61 just can be repaired emery wheel 40 after moving to precalculated position; While needing processing work 50, cylinder 52 promotes workpiece assembling seat 51 rotations, and workpiece 50 is delivered on emery wheel 40 and processed.Control system is controlled servomotor 11 by pre-set parameter and is rotated, servomotor 11 drives again the first screw mandrel 12 and the second screw mandrel 13 to rotate, thereby can control according to the degree of wear of emery wheel 40 amount of movement of workbench 5 and dressing tool mount pad 6, allow the two be automatically moved to desired position, do not need manual adjustments, regulate very conveniently, can effectively enhance productivity.
Further, be fixed with for accepting the brace table 53 of workpiece assembling seat 51 when the processing work 50 on described base 1, described workpiece assembling seat 51 is between cylinder 52 and brace table 53.The rotation of workpiece assembling seat 51 can be delivered to workpiece 50 position that needs processing, workpiece assembling seat 51 also reaches the position contacting with brace table 53, brace table 53 props up workpiece assembling seat 51, rocking of brace table 53 in the time of can effectively preventing processing work and affect the crudy of workpiece 50.
Further, described dressing tool mount pad 6 is arranged on base 1 by the first bearing 62, described the first bearing 62 is provided with first guide rail parallel with main shaft 4, dressing tool mount pad 6 is connected on the first guide rail, on described the first bearing 62, be provided with and can promote the first adjusting device 63 that dressing tool mount pad 6 moves, described workbench 5 is arranged on base 1 by the second bearing 54, and as preferably, described the second bearing 54 is suspended on the side of base 1.Described the second bearing 54 is provided with second guide rail parallel with main shaft 4, and workbench 5 is connected on the second guide rail, and the second adjusting device 55 can push work platform 5 moving is installed on described the second bearing 54.In the first adjusting device 63 and the second adjusting device 55, handwheel is all installed, shake handwheel, can adjust respectively by the first adjusting device 63 and the second adjusting device 55 position of dressing tool 61 and workpiece 50, to facilitate 61 pairs of emery wheels 40 of dressing tool to process and 40 pairs of workpiece 50 of emery wheel are processed.
In addition, the first adjusting device 63, the second adjusting device 55 also can be selected servomotor mechanism, regulate the position of dressing tool 61 and workpiece 50 by servomotor mechanism.
The second embodiment
The difference of the present embodiment and the first embodiment is that described dressing tool is a metal cutting tool, the first adjusting device 63 employing servomotor mechanism is controlled, by the control system of gear grinding machines, controlling servomotor mechanism works, the first adjusting device 63 and servomotor 11 coordinates to be controlled metal cutting tool and does moving interpolation emery wheel 40 is processed, thereby can on emery wheel 40, process required tooth.
The above, be better embodiment of the present invention, but the present invention is not limited to above-described embodiment, as long as it reaches technique effect of the present invention with any same or similar means, within all should falling into protection scope of the present invention.
Claims (10)
1. gear grinding machines, comprise base (1), main shaft mount pad (2) is installed on described base (1), the main shaft (4) that motor (3) is installed on described main shaft mount pad (2) and is driven by motor (3), emery wheel (40) is installed on described main shaft (4), it is characterized in that: described base (1) is provided with workbench (5) and dressing tool mount pad (6) in the position corresponding to emery wheel (40), described dressing tool mount pad (6) is rotatably provided with dressing tool (61) in the position corresponding to emery wheel (40), described workbench (5) is at the hinged workpiece assembling seat in position (51) corresponding to emery wheel (40), emery wheel (40) is positioned between workpiece assembling seat (51) and dressing tool (61), on described workbench (5), be provided with for promoting the cylinder (52) of workpiece assembling seat (51) rotation, described workpiece assembling seat (51) is hinged on the output shaft of cylinder (52), the guiding mechanism that can drive respectively dressing tool mount pad (6) to move towards the direction vertical with main shaft (4) with workbench (5) is installed on described base (1).
2. a kind of gear grinding machines according to claim 1, it is characterized in that: on described base (1), be fixed with for accepting the brace table (53) of workpiece assembling seat (51) when processing work (50), described workpiece assembling seat (51) is positioned between cylinder (52) and brace table (53).
3. a kind of gear grinding machines according to claim 1, it is characterized in that: described main shaft mount pad (2) comprises the first mount pad (21) and the second mount pad (22), described emery wheel (40) is positioned between the first mount pad (21) and the second mount pad (22).
4. a kind of gear grinding machines according to claim 3, is characterized in that: on described base (1), be provided with slide rail (23), it is upper that described the first mount pad (21) is connected to slide rail (23), and described motor (3) is arranged on the second mount pad (22).
5. a kind of gear grinding machines according to claim 3, it is characterized in that: on described main shaft (4), be socketed with for propping up first sleeve pipe (41) and second sleeve pipe (42) of emery wheel (40) to be fixed, described emery wheel (40) is positioned between the first sleeve pipe (41) and the second sleeve pipe (42).
6. a kind of gear grinding machines according to claim 5, it is characterized in that: the outside screw of described the first sleeve pipe (41) and/or the second sleeve pipe (42) is connected with nut (43), described the first sleeve pipe (41) and/or the second sleeve pipe (42) prop up emery wheel (40) by nut (43).
7. a kind of gear grinding machines according to claim 1, it is characterized in that: described dressing tool mount pad (6) is arranged on base (1) by the first bearing (62), described the first bearing (62) is provided with first guide rail parallel with main shaft (4), dressing tool mount pad (6) is connected on the first guide rail, is provided with and can promotes mobile the first adjusting device (63) of dressing tool mount pad (6) on described the first bearing (62).
8. a kind of gear grinding machines according to claim 1, it is characterized in that: described workbench (5) is arranged on base (1) by the second bearing (54), described the second bearing (54) is provided with second guide rail parallel with main shaft (4), workbench (5) is connected on the second guide rail, and on described the second bearing (54), being provided with can mobile the second adjusting device (55) of push work platform (5).
9. a kind of gear grinding machines according to claim 1, is characterized in that: described the second bearing (54) is suspended on the side of base (1).
10. a kind of gear grinding machines according to claim 1, is characterized in that: described workpiece assembling seat (51) is made by magnet with the part that workpiece (50) contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310648851.2A CN103659480B (en) | 2013-12-04 | 2013-12-04 | Gear grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310648851.2A CN103659480B (en) | 2013-12-04 | 2013-12-04 | Gear grinding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103659480A true CN103659480A (en) | 2014-03-26 |
| CN103659480B CN103659480B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310648851.2A Active CN103659480B (en) | 2013-12-04 | 2013-12-04 | Gear grinding machine |
Country Status (1)
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| CN (1) | CN103659480B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109352437A (en) * | 2018-11-30 | 2019-02-19 | 海宁市兴达刀剪有限公司 | The automatic roll flute equipment of blade |
| CN110948350A (en) * | 2019-11-12 | 2020-04-03 | 上海航天控制技术研究所 | Grinding wheel dressing and part machining integrated device and part machining method |
| CN111015517A (en) * | 2019-12-11 | 2020-04-17 | 彩虹（合肥）液晶玻璃有限公司 | Grinding wheel prosthetic devices |
| CN114454042A (en) * | 2022-03-19 | 2022-05-10 | 北京博鲁斯潘精密机床有限公司 | Automatic grinding wheel dressing mechanism of aeroengine blade tenon blade grinding machine tool |
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| DE1941936A1 (en) * | 1968-11-12 | 1970-06-11 | Rationalisierung Eisen Blech M | Machine for sharpening axes |
| US3879899A (en) * | 1973-03-28 | 1975-04-29 | William J Ribar | Scissors sharpener |
| FR2717725A1 (en) * | 1994-03-25 | 1995-09-29 | Reynard Sarl Ets Albert | Grinding machine forming cutting edge on blades of tools particularly knives |
| CN2465903Y (en) * | 2001-03-09 | 2001-12-19 | 张日康 | Paper-cutting mechainsm of paper cutting machine |
| CN2609714Y (en) * | 2003-04-29 | 2004-04-07 | 石家庄轴承设备股份有限公司 | Abrasive wheel differential compensate dressing apparatus |
| DE10351152B3 (en) * | 2003-11-03 | 2005-07-07 | Vollmer Werke Maschinenfabrik Gmbh | Machining device for grinding circular saw blade has machining station, workpiece reception device, displacement device and workpiece fixing device all supported by central machine block |
| CN102039560A (en) * | 2010-07-21 | 2011-05-04 | 无锡机床股份有限公司 | Grinding wheel dresser of grinder |
| CN202185832U (en) * | 2011-08-05 | 2012-04-11 | 无锡灵山机械有限公司 | Grinding wheel truing and dressing device |
| CN203611079U (en) * | 2013-12-04 | 2014-05-28 | 江门市江海区杰能机电科技有限公司 | Gear grinding machine |
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2013
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1941936A1 (en) * | 1968-11-12 | 1970-06-11 | Rationalisierung Eisen Blech M | Machine for sharpening axes |
| US3879899A (en) * | 1973-03-28 | 1975-04-29 | William J Ribar | Scissors sharpener |
| FR2717725A1 (en) * | 1994-03-25 | 1995-09-29 | Reynard Sarl Ets Albert | Grinding machine forming cutting edge on blades of tools particularly knives |
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| CN2609714Y (en) * | 2003-04-29 | 2004-04-07 | 石家庄轴承设备股份有限公司 | Abrasive wheel differential compensate dressing apparatus |
| DE10351152B3 (en) * | 2003-11-03 | 2005-07-07 | Vollmer Werke Maschinenfabrik Gmbh | Machining device for grinding circular saw blade has machining station, workpiece reception device, displacement device and workpiece fixing device all supported by central machine block |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109352437A (en) * | 2018-11-30 | 2019-02-19 | 海宁市兴达刀剪有限公司 | The automatic roll flute equipment of blade |
| CN109352437B (en) * | 2018-11-30 | 2023-09-19 | 海宁市兴达刀剪有限公司 | Automatic tooth grinding equipment for blade |
| CN110948350A (en) * | 2019-11-12 | 2020-04-03 | 上海航天控制技术研究所 | Grinding wheel dressing and part machining integrated device and part machining method |
| CN111015517A (en) * | 2019-12-11 | 2020-04-17 | 彩虹（合肥）液晶玻璃有限公司 | Grinding wheel prosthetic devices |
| CN114454042A (en) * | 2022-03-19 | 2022-05-10 | 北京博鲁斯潘精密机床有限公司 | Automatic grinding wheel dressing mechanism of aeroengine blade tenon blade grinding machine tool |
| CN114454042B (en) * | 2022-03-19 | 2022-11-18 | 北京博鲁斯潘精密机床有限公司 | Automatic grinding wheel dressing mechanism of aeroengine She Sun blade grinding machine tool |
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|---|---|
| CN103659480B (en) | 2017-01-25 |
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Address after: 529080 four of cellar West Road, cellar Industrial Park, Jianghai District, Jiangmen, Guangdong Patentee after: Jiangmen Jeng knives and scissors Equipment Technology Co., Ltd. Address before: 529080 four of cellar West Road, cellar Industrial Park, Jianghai District, Jiangmen, Guangdong Patentee before: Jiangmen Jianghai District Jieneng Electromechanical Technology Co., Ltd. |
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Address after: 529080 the first floor of 2 buildings of No. 26 Hing Nan Road, Kau tou Kau Road, Jianghai District, Jiangmen, Guangdong (1-1) Patentee after: Jiangmen Jeng knives and scissors Equipment Technology Co., Ltd. Address before: 529080 four of cellar West Road, cellar Industrial Park, Jianghai District, Jiangmen, Guangdong Patentee before: Jiangmen Jeng knives and scissors Equipment Technology Co., Ltd. |