CN107344305A - A kind of cutter sharpener continuous alignment device of random coil line - Google Patents
A kind of cutter sharpener continuous alignment device of random coil line Download PDFInfo
- Publication number
- CN107344305A CN107344305A CN201610294617.8A CN201610294617A CN107344305A CN 107344305 A CN107344305 A CN 107344305A CN 201610294617 A CN201610294617 A CN 201610294617A CN 107344305 A CN107344305 A CN 107344305A
- Authority
- CN
- China
- Prior art keywords
- milling cutter
- cutter bar
- cylinder
- alignment device
- driving rack
- 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.)
- Pending
Links
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
- B24B3/02—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters
- B24B3/021—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters of milling cutters with helical cutting edges
-
- 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
- B24B3/02—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters
- B24B3/025—Tooth rests; Supporting means for milling-cutter grinding machines
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
-
- 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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
-
- 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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a kind of cutter sharpener continuous alignment device of random coil line, one end of the mandrel electromagnetic clutch is provided with driving rack guider, one end of the driving rack guider is provided with driving rack, one end of the driving rack, which is provided with, is oriented to thrust cylinder, described one end for being oriented to thrust cylinder is provided with travelling gear, the worm gear driving shaft is located at lower section one end of mandrel electromagnetic clutch, the side front end for being oriented to thrust cylinder-driven axle and being located at worm gear driving shaft, one end of the milling cutter bar clamp assemblies is provided with collet chuck, clamping has milling cutter bar on the collet chuck, and one end of milling cutter bar is provided with abrasive grinding wheel, abrasive grinding wheel and the milling cutter bar and between be provided with orientation sensor component；The cutter sharpener continuous alignment device of random coil line, easy to install, safe and reliable, high in machining efficiency, versatility is good and maintenance is convenient.
Description
Technical field
The invention belongs to cutter sharpener technical field, and in particular to a kind of cutter sharpener random coil line
Continuous alignment device.
Background technology
One technical barrier of generally existing in current cutter sharpener production standard slotting cutter：Any two machines
It can not realize that milling cutter chip area and the spiral lay of all edge clearance angles are completely the same substantially in bed grinding.
Milling cutter chip area and the processing of all edge clearance angles are completed if in clamped one time above a cutter sharpener, then may be used
The helix angle error of chip area and all edge clearance angles is avoided, but because lathe work(in actual cutter production process
Rate size, machine tool travel limitation, the demand of cutter production technology process, grinding milling cutter chip area and grinding
This two procedures of milling cutter week edge clearance angle are frequently necessary to complete on two different lathes, such as the life of A lathes
When producing 35 ° of helical angle standard milling cutters, because the error of transmission parts of A lathes itself causes chip area helical angle
For 36 °, when this milling cutter bar, which is put into, is ground all edge clearance angles on B grinding machines, B lathe actual processings obtain week
Edge clearance angle helical angle is 34 °, thus produces milling cutter bar chip area and all sword helical angles are inconsistent, cutter
All edge clearance angle width are inconsistent, and cutter manufacturing scrap rate is high.
The content of the invention
It is an object of the invention to provide a kind of cutter sharpener continuous alignment device of random coil line, with
Solve the problems, such as to propose in above-mentioned background technology.
To achieve the above object, the present invention provides following technical scheme：A kind of irregular spiral shell of cutter sharpener
The continuous alignment device of spin line, including mandrel electromagnetic clutch, driving rack guider, worm-gear driven
Axle, be oriented to thrust cylinder-driven axle, milling cutter bar clamp assemblies, abrasive grinding wheel, orientation sensor component,
Thrust cylinder, driving rack, travelling gear and collet chuck, one end of the mandrel electromagnetic clutch is oriented to set
There is driving rack guider, one end of the driving rack guider is provided with driving rack, institute
The one end for stating driving rack is provided with guiding thrust cylinder, and described one end for being oriented to thrust cylinder is provided with driving cog
Wheel, one end of the travelling gear are provided with milling cutter bar clamp assemblies, and the worm gear driving shaft is located at mandrel
Lower section one end of electromagnetic clutch, before the guiding thrust cylinder-driven axle is located at the side of worm gear driving shaft
End, one end of the milling cutter bar clamp assemblies are provided with collet chuck, and clamping has milling cutter bar on the collet chuck,
And one end of milling cutter bar is provided with abrasive grinding wheel, abrasive grinding wheel and the milling cutter bar and between be provided with and be oriented to
Sensor cluster.
Preferably, the guiding thrust cylinder determines cylinder according to the helical angle and helical pitch length of milling cutter bar
Stroke, guarantee meets the needs of in the range of helix length of rotation, and is carried for guide cylinder drive axis
For required power resources.
Preferably, the travelling gear and driving rack will have enough strength grades, and the length of rack
Need to meet the rotating cycle needed for gear, the linear motion that this rack-and-pinion group is responsible for being directed to cylinder passes
The rotary motion of milling cutter bar is delivered to, makes the suitable rotary speed of offer being ground all edge clearance angles.
Preferably, the mandrel electromagnetic clutch is controlled by switching, and is responsible for worm gear driving shaft and guiding pushes away
The connection and disconnection of strength cylinder power transmission shaft, make milling cutter bar switch to worm-gear driven pattern and guide cylinder
Drive pattern two states.
Preferably, base of the carrier head body is used for installing travelling gear in the milling cutter bar clamp assemblies, according to
Helix length changes the number of teeth, modulus, the gear ring that pressure angle does not wait, under guide cylinder drive pattern
The rotation of milling cutter bar is driven, replaceable aperture collet chuck is used for the milling cutter bar of clamping different diameter specifications.
Preferably, the pressure sensor in the orientation sensor component, is being revolved by detecting spiral grooves
Turn and pressure during axial feed to sensor, to adjust the speed of bar axial feed so that bar exists
Axial feed and swivel feeding are in proper fit state when being ground helix so that chip area and all edge clearance angles
Helical angle and helical pitch match, connection fixture is in pressure sensor and abrasive grinding wheel to be relatively fixed
Position, be in correct position in whole all edge clearance angle grinding process.
The technique effect and advantage of the present invention：First, it is easy to install：Cutter sharpener random coil
The continuous alignment device of line can it is independently installed with lathe inside, it is only necessary to increase orientation sensor inside lathe
Component is connected with machine tool control system, by detect pressure sensor signal control guide cylinder speed with
Pressure, you can make to obtain correct spiral angle and helical pitch during the rotation of milling cutter bar；2nd, it is safe and reliable：
Detect the helical position of chip area in real time by orientation sensor, milling cutter week edge clearance angle is ground as benchmark
Helix, simple and practical, the function that no complex precise transmission parts participate in completing this device needs
Ask；3rd, it is high in machining efficiency：Two machines each set chip area and Zhou Ren in traditional numeric-control processing mode
The helical angle and helical pitch of relief angle, error is larger, and percent defective is high, and pattern is used in traditional manual processing mode
When principle is processed, the helical angle and helical pitch of pattern are fixed and can not adjusted, and the present apparatus is according to pressure sensor
Signal controls bar rotary motion, can adjust helical angle and helical pitch in real time, make it with chip area helical angle and
Helical pitch is identical.So that machine tooling qualification rate, processing efficiency significantly improve；4th, versatility is good：The hair
Bright to be applied to most CNC Cutter Grinding Machine Tools, modularized design integrated level is high, it is easy for installation and without through
Often dismounting；5th, maintenance is convenient：The present invention is modularized design, and the detection and maintenance of its functional part can
It is rapidly completed.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the K direction views of travelling gear of the present invention；
Fig. 3 is the X bar axial feed figures of the present invention.
In figure：5th, mandrel electromagnetic clutch, 6, driving rack guider, 7, worm gear driving shaft,
8th, it is oriented to thrust cylinder-driven axle, 9, milling cutter bar clamp assemblies, 10, milling cutter bar, 11, grinding
Emery wheel, 12, orientation sensor component, 13, be oriented to thrust cylinder, 14, driving rack, 15, transmission
Gear and 16, replaceable aperture collet chuck.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present invention, and
The embodiment being not all of.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out under the premise of creative work the every other embodiment obtained, belong to the scope of protection of the invention.
Connected the invention provides a kind of cutter sharpener as shown in Figure 1, Figure 2 and Figure 3 with random coil line
Continuous alignment device, including mandrel electromagnetic clutch 5, driving rack guider 6, worm gear driving shaft 7,
It is oriented to thrust cylinder-driven axle 8, milling cutter bar clamp assemblies 9, abrasive grinding wheel 11, orientation sensor component
12nd, thrust cylinder 13, driving rack 14, travelling gear 15 and collet chuck 16, the mandrel electromagnetism are oriented to
One end of clutch 5 is provided with driving rack guider 6, and the driving rack is with the one of guider 6
End is provided with driving rack 14, and one end of the driving rack 14, which is provided with, is oriented to thrust cylinder 13, described to lead
Travelling gear 15 is provided with to one end of thrust cylinder 13, one end of the travelling gear 15 is provided with milling cutter rod
Material clamping component 9, the worm gear driving shaft 7 is located at lower section one end of mandrel electromagnetic clutch 5, described to lead
The side front end of worm gear driving shaft 7, the milling cutter bar clamp assemblies 9 are located to thrust cylinder-driven axle 8
One end collet chuck 16 is installed, clamping has milling cutter bar on the collet chuck 16, and one end of milling cutter bar is set
Have an abrasive grinding wheel 11, the abrasive grinding wheel 11 and milling cutter bar and between be provided with orientation sensor component 12,
The guiding thrust cylinder 13 determines cylinder stroke according to the helical angle and helical pitch length of milling cutter bar, ensures
Meet the needs of in the range of helix length of rotation, and required move is provided for guide cylinder drive axis
Power source, the travelling gear 15 and driving rack 14 will have enough strength grades, and the length of rack
Degree needs to meet the rotating cycle needed for gear, and this rack-and-pinion group is responsible for being directed to the linear motion of cylinder
The rotary motion of milling cutter bar is delivered to, makes the suitable rotary speed of offer being ground all edge clearance angles, it is described
Mandrel electromagnetic clutch 5 is controlled by switching, and is responsible for worm gear driving shaft 7 and is oriented to thrust cylinder-driven axle 8
Connection and disconnection, milling cutter bar is switched to two kinds of worm-gear driven pattern and guide cylinder drive pattern
State, base of the carrier head body is used for installing travelling gear 15 in the milling cutter bar clamp assemblies 9, according to spiral shell
Spin line length changes the number of teeth, modulus, the gear ring that pressure angle does not wait, in guide cylinder drive pattern lower band
Dynamic milling cutter bar rotation, replaceable aperture collet chuck 16 are used for the milling cutter bar of clamping different diameter specifications, institute
The pressure sensor in orientation sensor component 12 is stated, by detecting spiral grooves in rotation and axial feed
When pressure to sensor, to adjust the speed of bar axial feed so that bar is when being ground helix
Axial feed and swivel feeding are in proper fit state so that the helical angle of chip area and all edge clearance angles and lead
Journey matches, and connection fixture makes pressure sensor be in relatively fixed position with abrasive grinding wheel, whole
Correct position is in individual all edge clearance angle grinding process, cutter sharpener of the invention is connected with random coil line
Continuous alignment device, is mainly led by guiding thrust cylinder 13 and driving rack 14, travelling gear 15 to drive
Milling cutter bar clamp assemblies 9, the power and speed of swivel feeding are provided for milling cutter bar swivel feeding, be driven
Rack guider 6 is used for ensureing the centre distance of driving rack 14 and travelling gear 15, and to pass
Carry-over bar 14 provides guide effect, driving rack 14 smoothly can be engaged and disengage travelling gear 15, milling
Knife bar clamp assemblies 9 provide reliable grip strength with replaceable aperture collet chuck 16 for milling cutter bar, hold
Axially and radially load when being ground, and it is adapted to the milling cutter bar of different diameter specifications, orientation sensor
Component 12 continuously receives pressure signal during milling cutter chip area axial feed, and thrust gas is oriented to control with this
The movement velocity of cylinder 13 so that the axial feed and swivel feeding speeds match of milling cutter bar 10, mandrel
Electromagnetic clutch 5 is played by itself disconnecting the action with connecting so that worm gear driving shaft 7 pushes away with guiding
Strength cylinder power transmission shaft 8 can be connected to be rotated together, can also be separated and individually be rotated, in continuous centering helix
When being ground milling cutter week sword helix, mandrel electromagnetic clutch 5 disconnects worm gear driving shaft 7 with being oriented to thrust gas
Cylinder power transmission shaft 8, drive milling cutter bar clamp assemblies 9 to rotate by guiding thrust cylinder 13, drive milling cutter rod
Expect 10 swivel feedings, complete continuous centering helix and be ground the action of milling cutter week sword helix 2, grinding
After cutting end, mandrel electromagnetic clutch 5 connects worm gear driving shaft 7 and is oriented to thrust cylinder-driven axle 8, leads to
Cross lathe dividing head complete dividing movement, 90 degree or 180 ° etc., for being ground on 360 ° of milling cutter circumference
Other positions Zhou Ren, now drive milling cutter bar clamp assemblies 9 to rotate by worm gear driving shaft 7, drive band
The dynamic swivel feeding of milling cutter bar 10 completes the indexing action of milling cutter bar 10, and mandrel electromagnetic clutch 5 can
Milling cutter bar is set to be switched to worm-gear driven pattern and guide cylinder drive pattern two states, random coil
The continuous alignment device of line determines the correct position of abrasive grinding wheel 11 by detecting chip area helix, in milling
Knife bar 10 carries out axial feed and during swivel feeding, grinding milling cutter week sword helix, with actual row
Milling cutter week sword helix is ground on the basis of bits groove helix, different lathe actual processing errors is avoided and causes
Spiral angle and the unmatched problem of helical pitch, be remarkably improved milling cutter production efficiency and qualification rate.
Operation principle：General procedure in milling cutter grinding process is to be ground helical flute, grinding
All edge clearance angles, end tooth chip pocket is ground, is ground end tooth relief angle, cutter sharpener random coil of the present invention
The logical production process by all edge clearance angle helical angles of the continuous alignment device of line is changed to by chip removal spiral shell by lathe setting
The continuous centering of spin slot is set, and pressure sensor detects chip area spiral goove fluted shaft when being ground all edge clearance angles
To feeding when pressure signal, thus signal come control be oriented to thrust cylinder operating pressure and speed, this
The swivel feeding that the speed of service is delivered to milling cutter bar by travelling gear rack group again moves, and coordinates milling cutter rod
The axial feed of material so that the axial feed motion of milling cutter bar is active movement, the rotation of milling cutter bar
Feed motion is driven motions so that with the spiral shell of continuous centering chip area during wheel grinding milling cutter week edge clearance angle
Spin line, milling cutter week edge clearance angle is ground as benchmark.The present apparatus is remarkably improved milling cutter production efficiency, drop
In low milling cutter production process, the error problem of all edge clearance angle sizes, it can also be used to solve two machine grindings
Error problem during helix, and corresponding parts can be changed according to actual milling cutter specification, using wide
General, this alignment device is simple in construction, repairs with changing conveniently.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not used to limit
The system present invention, although the present invention is described in detail with reference to the foregoing embodiments, for this area
For technical staff, it can still modify to the technical scheme described in foregoing embodiments, or
Person carries out equivalent substitution to which part technical characteristic, within the spirit and principles of the invention, is made
Any modification, equivalent substitution and improvements etc., should be included in the scope of the protection.
Claims (6)
1. a kind of cutter sharpener continuous alignment device of random coil line, including mandrel electromagnetic clutch (5),
Driving rack guider (6), worm gear driving shaft (7), it is oriented to thrust cylinder-driven axle (8), milling
Knife bar clamp assemblies (9), abrasive grinding wheel (11), orientation sensor component (12), guiding thrust gas
Cylinder (13), driving rack (14), travelling gear (15) and collet chuck (16), it is characterised in that：It is described
One end of mandrel electromagnetic clutch (5) is provided with driving rack and used with guider (6), the driving rack
One end of guider (6) is provided with driving rack (14), and one end of the driving rack (14) is provided with
Thrust cylinder (13) is oriented to, described one end for being oriented to thrust cylinder (13) is provided with travelling gear (15),
One end of the travelling gear (15) is provided with milling cutter bar clamp assemblies (9), the worm gear driving shaft (7)
Lower section one end of mandrel electromagnetic clutch (5) is located at, the guiding thrust cylinder-driven axle (8) is located at
The side front end of worm gear driving shaft (7), one end of the milling cutter bar clamp assemblies (9) are provided with cylinder
Press from both sides (16), clamping has milling cutter bar on the collet chuck (16), and one end of milling cutter bar is provided with grinding sand
Take turns (11), the abrasive grinding wheel (11) and milling cutter bar and between be provided with orientation sensor component (12).
2. a kind of cutter sharpener according to claim 1 continuous alignment device of random coil line,
It is characterized in that：The guiding thrust cylinder (13) is true according to the helical angle and helical pitch length of milling cutter bar
Determine cylinder stroke, guarantee meets the needs of in the range of helix length of rotation, and is guide cylinder power transmission shaft
Power resources needed for providing are provided.
3. a kind of cutter sharpener according to claim 1 continuous alignment device of random coil line,
It is characterized in that：The travelling gear (15) and driving rack (14) will have enough strength grades,
And the length of rack needs to meet the rotating cycle needed for gear, this rack-and-pinion group is responsible for being directed to cylinder
Linear motion be delivered to the rotary motion of milling cutter bar, offer is suitably rotated being ground all edge clearance angles
Speed.
4. a kind of cutter sharpener according to claim 1 continuous alignment device of random coil line,
It is characterized in that：The mandrel electromagnetic clutch (5) is controlled by switching, and is responsible for worm gear driving shaft (7)
Connection and disconnection with thrust cylinder-driven axle (8) is oriented to, make milling cutter bar switch to worm-gear driven mould
Formula and guide cylinder drive pattern two states.
5. a kind of cutter sharpener according to claim 1 continuous alignment device of random coil line,
It is characterized in that：Base of the carrier head body is used for installing travelling gear (15) in the milling cutter bar clamp assemblies (9),
The number of teeth is changed according to helix length, modulus, the gear ring that pressure angle does not wait, mould is driven in guide cylinder
The rotation of milling cutter bar is driven under formula, replaceable aperture collet chuck (16) is used for the milling of clamping different diameter specifications
Knife bar.
6. a kind of cutter sharpener according to claim 1 continuous alignment device of random coil line,
It is characterized in that：Pressure sensor in the orientation sensor component (12), by detecting spiral goove
Pressure of the groove in rotation and axial feed to sensor, to adjust the speed of bar axial feed so that
Bar when being ground helix axial feed and swivel feeding in proper fit state so that chip area and week
The helical angle and helical pitch of edge clearance angle match, and connection fixture makes pressure sensor and abrasive grinding wheel (11)
In relatively fixed position, correct position is in whole all edge clearance angle grinding process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294617.8A CN107344305A (en) | 2016-05-06 | 2016-05-06 | A kind of cutter sharpener continuous alignment device of random coil line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294617.8A CN107344305A (en) | 2016-05-06 | 2016-05-06 | A kind of cutter sharpener continuous alignment device of random coil line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107344305A true CN107344305A (en) | 2017-11-14 |
Family
ID=60252817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610294617.8A Pending CN107344305A (en) | 2016-05-06 | 2016-05-06 | A kind of cutter sharpener continuous alignment device of random coil line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107344305A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109065333A (en) * | 2018-08-21 | 2018-12-21 | 李涵 | A kind of high-tension transformer maintenance process |
| CN109926954A (en) * | 2019-04-30 | 2019-06-25 | 无锡先导智能装备股份有限公司 | A kind of hypanthium alignment device |
| CN112621398A (en) * | 2021-01-26 | 2021-04-09 | 杭州鸿晶自动化科技有限公司 | Feeding device for cutter grinding machine |
| CN114101804A (en) * | 2021-12-11 | 2022-03-01 | 雄名航空科工（芜湖）股份有限公司 | Straight tooth abrasive machining equipment |
-
2016
- 2016-05-06 CN CN201610294617.8A patent/CN107344305A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109065333A (en) * | 2018-08-21 | 2018-12-21 | 李涵 | A kind of high-tension transformer maintenance process |
| CN109926954A (en) * | 2019-04-30 | 2019-06-25 | 无锡先导智能装备股份有限公司 | A kind of hypanthium alignment device |
| CN112621398A (en) * | 2021-01-26 | 2021-04-09 | 杭州鸿晶自动化科技有限公司 | Feeding device for cutter grinding machine |
| CN114101804A (en) * | 2021-12-11 | 2022-03-01 | 雄名航空科工（芜湖）股份有限公司 | Straight tooth abrasive machining equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171114 |
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| WD01 | Invention patent application deemed withdrawn after publication |