CN100460147C - Flexible multipoint supported system in use for digital controlled machining laminae - Google Patents

Flexible multipoint supported system in use for digital controlled machining laminae Download PDF

Info

Publication number
CN100460147C
CN100460147C CNB2007101196103A CN200710119610A CN100460147C CN 100460147 C CN100460147 C CN 100460147C CN B2007101196103 A CNB2007101196103 A CN B2007101196103A CN 200710119610 A CN200710119610 A CN 200710119610A CN 100460147 C CN100460147 C CN 100460147C
Authority
CN
China
Prior art keywords
cradle
eccentric block
end cap
oil
blade
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.)
Expired - Fee Related
Application number
CNB2007101196103A
Other languages
Chinese (zh)
Other versions
CN101092020A (en
Inventor
陈志同
李伟良
陈五一
王翔
张俐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beihang University
Beijing University of Aeronautics and Astronautics
Original Assignee
Beihang University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beihang University filed Critical Beihang University
Priority to CNB2007101196103A priority Critical patent/CN100460147C/en
Publication of CN101092020A publication Critical patent/CN101092020A/en
Application granted granted Critical
Publication of CN100460147C publication Critical patent/CN100460147C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Drilling And Boring (AREA)

Abstract

The invention discloses a flexible multipoint supporting device for vane digital control machining. It is made up of cradle assembly, work flow feeding assembly, A flexible supporting component, and B flexible supporting component. The device realizes fixation for cradle assembly through cone pin controlled by A oil cylinder fixed on oil outlet distribution base and B oil cylinder fixed on machine tool tail base. The first machining location is used to realize synchronously turning action for cradle assembly and vane. And the second machining location is used to realize surface changing supporting for vane. The invention is mainly used to improve technical system rigidity and automation degree and machining accuracy. The flexible supporting structure also could be used as rapid and low cost assistant supporting for other weak rigidity machining.

Description

A kind of blade digital control processing flexibility and processing multi-point support device that is used for
Technical field
The present invention relates to a kind of flexibility multi-supporting, be used for the supplemental support of weak hard parts process such as blade, belong to metal cutting processing and Metal Cutting Machine Tool field of accessories.
Background technology
Blade digital control adds man-hour because himself rigidity is very poor so be easy to generate machining deformation especially, and this also is one of present blade processing reason that need adopt backward manual grinding and polishing process.In order to improve the rigidity of blade processing, people install some supplemental support to improve its rigidity below blade.But traditional auxiliary support structure generally needs artificial the adjustment, and adjustment process is time-consuming, and pretightning force changes easily in adjustment process, and the rigidity of side direction is generally all good inadequately, and therefore the effect that produces is very limited.Traditional supplemental support mechanism directly adopts the spiral marking connection mode, and this mode lateral rigidity is poor, and screw thread is all changing at the side direction of rundown process and axial dimension and rigidity.The employing that also has in addition is laterally and tightly propped, is a kind of better mode, can utilize the frictional force effect, as long as be no more than this frictional force, its axial rigidity is very high, but lateral rigidity is influenced by threaded portion.Present multiple spot formation system is answered the general motor-driven single-degree-of-freedom screw-nut bodies that adopt of the requirement of curved surface forming more, this plant automation degree height, but volume is big, the screw thread rigidity of support is low, cost is high.Along with improving constantly that the automation of blade digital control process requires, realize that the automation that blade is installed also has very important significance, press for and develop multi-point flexibly auxiliary support apparatus a kind of automation, high rigidity, compact conformation.
Summary of the invention
The objective of the invention is in order to realize a kind of flexibility multi-supporting of blade once mounting, two sides processing, the defective that has overcome common bracing or strutting arrangement poor rigidity and be difficult to adjust and move certainly automatically face processing with two fixed position lockings.This device is by being fixed on the A oil cylinder 205 on the fuel-displaced dispense font 204 and being fixed on the location that the tapered dowel of B oil cylinder 7 controls on the tailstock tool 4 is realized cradle assemblies 1, revolution action when first Working position is used for realizing realizing cradle assemblies 1 and blade in the blade cutting process, second Working position is used for then realizing that the face that changes to blade supports under the condition of not unloading lower blade, avoided changing the space restriction causes in the face process the cradle assemblies 1 and the interference problem of lathe table top.Oil-feed distributor 201 among the present invention and go out oil dispenser 202 and realized the motion of oil circuit, gas circuit and vacuum passage, the conversion of inactive state; A flexible support assembly 3 is simple in structure, and space is little, and A cylinder 308 and B cylinder 307 have all adopted the bellows-type cylinder littler than common air cylinder structure; According to the variation of different blade profile windup-degrees, can realize the support normal of blade profile by the structural change of cradle assemblies 1, guaranteed reliable and stable support normal; The structural design of the A eccentric block 333 on the A end cap 301, B eccentric block 334, C eccentric block 335, D eccentric block 336 and E eccentric block 337 has realized the high axial stiffness of support bar 305 in 301 pairs of support bar 305 clamping process of A end cap, and A flexible support assembly 3 has adopted with B flexible support assembly 6 and had two fulcrums, high side direction and axial stiffness simultaneously; The all working motion process of this flexible header system need not artificial adjustment by programme-control, the automaticity height.
Description of drawings
Fig. 1 is the cutaway view of flexibility multi-supporting of the present invention.
Figure 1A is A-A view of Fig. 1.
Fig. 2 is that working fluid of the present invention is supplied with phantom.
Fig. 2 A is that working fluid of the present invention is supplied with part oil circuit, gas circuit work schematic diagram.
Fig. 3 is the cutaway view of A flexible support assembly of the present invention.
Fig. 3 A is that the B of Fig. 3 is to view.
Fig. 3 B is oil circuit on the A flexible support assembly, gas circuit work schematic diagram.
Fig. 3 C is the external structure of A end cap.
Among the figure: 1. cradle assemblies 101. cradles 102. cradle left support abutment 103.A anchor clamps
104.B anchor clamps 105. cradle right support abutments 2. working fluid feeding assemblies 201. oil-feed distributors
202. go out oil dispenser 203. compound pipeline complex pipelines 204. fuel-displaced dispense font 205.A oil cylinder 206. locking nuts
207. bearing 208. bearing (ball) covers 209. transfer panels 210. pin 211.A asphalt channels
212.B gas passage 214.B road, asphalt channel 213.A road gas passage 215. vacuum passage 216.A screws
221.A oilhole 222.B oilhole 223.A pore 224.B pore 225. vacuum holes
231.A rotating channel 232.B rotating channel 233.C rotating channel 234.D rotating channel
3.A flexible support assembly 301.A end cap 331. flanges 332. installing holes
333.A eccentric block 334.B eccentric block 335.C eccentric block 336.D eccentric block 337.E eccentric block
338. flange 302.B end cap 303. housing 304.B pistons 305. support bars
306. supporting member 307.B cylinder 308.A cylinder 309.A piston 310.B spacer sleeve
311.A spring 312.B spring 313.A spacer sleeve 314.B gas channels 315.A gas channels
316.B asphalt channel 317.B screw 4. tailstock tools 5. blades 501. tenons
6.B flexible support assembly 7.B oil cylinder
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
The present invention is a kind of blade digital control processing flexibility and processing multi-point support device that is used for, and is made up of cradle assemblies 1, working fluid feeding assembly 2, A flexible support assembly 3, B flexible support assembly 6, referring to Fig. 1, shown in Figure 2.Described cradle assemblies 1 includes cradle left support abutment 102, cradle right support abutment 105, cradle 101, and described cradle left support abutment 102 is connected on the fuel-displaced dispense font 204 with the right-angled intersection bearing, described cradle right support abutment 105 is connected on the tailstock tool 4 with the cylindrical pair supporting structure, and the two ends of cradle 101 are connected on cradle left support abutment 102, the cradle right support abutment 105.Described working fluid feeding assembly 2 includes an oil-feed distributor 201, goes out oil dispenser 202 and a compound pipeline complex pipeline 203, and its effect is to be transferred to the fluid in A asphalt channel 211, B asphalt channel 212 and A road gas passage 213, B road gas passage 214, the vacuum passage 215 on the cradle 101 and to offer each flexible support assembly.Describedly go out oil dispenser 202 and have multiple function: 1. be connected the access that has realized working fluid with compound pipeline complex pipeline 203; 2. the right-hand member conical surface of the numerical control rotating platform that rotates with driven vane is connected, has realized the axis rotation of oil dispenser 202 winding number control turntables; 3. go out the bearing block that oil dispenser 202 can be used as cradle left support abutment 102 in the present invention, cradle left support abutment 102 is reliably retrained in radial and axial position; 4. go out oil dispenser 202 and constitute revolution oil gas output channel, and oil, gas are transferred to cradle assemblies 1 by the oil gas output channel that is arranged on the cradle left support abutment 102 with fuel-displaced dispense font 204; 5. going out oil dispenser 202 and transfer panel 209 is connected by the conical surface, tension effect by A screw 216 has guaranteed oil dispenser 202 and has been connected with the reliable of transfer panel 209, pin 210 has realized that transfer panel 209 is in the circumferential location that goes out on the oil dispenser 202, the A anchor clamps 103 that are connected on the transfer panel 209 have realized that tenon 501 is connected and the location with the reliable of transfer panel 209, have guaranteed that blade 5 and transfer panel 209 link into an integrated entity in process.On the fuel-displaced dispense font 204 A oil cylinder 205 is installed, can realizes when this oil cylinder stretches out under the cutting state that cradle assemblies 1 goes out the reliable of oil dispenser 202 and is connected with described.Tailstock tool 4 tops are equipped with the B oil cylinder 7 that is used for auxiliary cradle assemblies 1 upset, can realize when this oil cylinder stretches out changing that cradle assemblies 1 is connected with the reliable of tailstock tool 4 under the surface state.Simultaneously, in order to guarantee processing and support positioning accuracy, the taper pin on the piston in the A oil cylinder 205 has matching relationship with the taper hole that goes out oil dispenser 202, and the taper hole on taper pin on the piston in the B oil cylinder 7 and the cradle right support abutment 105 has matching relationship.
Referring to Figure 1A, shown in Figure 2, the left end of compound pipeline complex pipeline 203 is socketed with bearing 207, bearing (ball) cover 208, locking nut 206, and bearing (ball) cover 208 is connected with oil-feed distributor 201, and locking nut 206 is used to compress bearing 207; The right-hand member of compound pipeline complex pipeline 203 with go out oil dispenser 202 and be connected; (shown in Figure 1A) compound pipeline complex pipeline 203 is provided with A asphalt channel 211, B asphalt channel 212, A road gas passage 213, the B road gas passage 214 that is used for gas circuit, oil circuit conducting, and vacuum passage 215, and A screw 216 is installed in the die of compound pipeline complex pipeline 203; A screw 216 1 ends are connected with transfer panel 209, are used for transfer panel 209 tensions; The periphery of (referring to shown in Figure 2) oil-feed distributor 201 is provided with A oilhole 221, B oilhole 222, A pore 223, B pore 224, vacuum hole 225; Go out and be socketed with fuel-displaced dispense font 204 on the oil dispenser 202, A oil cylinder 205 is installed in the top of fuel-displaced dispense font 204, cradle left support abutment 102 is installed in the bottom of fuel-displaced dispense font 204, transfer panel 209 is installed in out on the oil dispenser 202, and realizes transfer panel 209 and the location that goes out oil dispenser 202 by pin 210; A anchor clamps 103 are connected with transfer panel 209, and the tenon 501 of blade 5 one ends is installed in the through hole of A anchor clamps 103, and A anchor clamps 103 are used to clamp tenon 501, and blade 5 other ends are installed on the B anchor clamps 104 simultaneously, and by 104 tensions of B anchor clamps and location, B anchor clamps 104 are installed in the left end of tailstock tool 4.The bottom of blade 5 holds out against by the supporting member on supporting member 306 on the A flexible support assembly 3 and the B flexible support assembly 6.
Shown in Fig. 3, Fig. 3 A, the lower end of the housing 303 in the A flexible support assembly 3 is installed on the cradle 101 by screw, and A end cap 301, B end cap 302 are installed in the housing 303; Be socketed with A spacer sleeve 313 on the eccentric block of A end cap 301, A spacer sleeve 313 outer cover are connected to A spring 311, and the eccentric block of A end cap 301 is fastened on the inwall of A piston 309; Be socketed with B spacer sleeve 310 on the eccentric block of B end cap 302, B spacer sleeve 310 outer cover are connected to B spring 312, and the eccentric block of B end cap 302 is fastened on the inwall of B piston 304; One end of support bar 305 passes B cylinder 307, B end cap 302, A piston 309, A end cap 301, A cylinder 308 in turn, be installed with supporting member 306 on the end face of a described end of support bar 305, be installed with B screw 317 on the other end of support bar 305; In the present invention, A end cap 301 is identical with B end cap 302 structures, it is an eccentric pyramidal structure, shown in Fig. 3 C, be provided with installing hole 332 around the flange 331 of A end cap 301, the center of flange 331 has the through hole (not shown), the bottom of flange 331 is provided with flange 338, on the outer rim of the through hole of flange 331 bottoms, be respectively equipped with A eccentric block 333, B eccentric block 334, C eccentric block 335, D eccentric block 336, E eccentric block 337, and B eccentric block 334 is identical with E eccentric block 337 structures, and C eccentric block 335 is identical with D eccentric block 336 structures.
Shown in Figure 1A, Fig. 2 A, Fig. 3 B, in the present invention, after the A road binders that A oilhole 221 enters entered in the A asphalt channel 211 in the compound pipeline complex pipeline 203, the E rotating channel through going out on the oil dispenser 202 entered A oil cylinder 205 again; After the B road binders that B oilhole 222 enters enters in the B asphalt channel 212 in the compound pipeline complex pipeline 203, A rotating channel 231 through going out on the oil dispenser 202 enters the A channel on the fuel-displaced dispense font 204, the A channel on the cradle left support abutment 102, the A channel on the cradle 101 in turn again, enters at last in the B asphalt channel 316 of A flexible support assembly 3; After the A road gas that A pore 223 enters enters in the A road gas passage 213 in the compound pipeline complex pipeline 203, B rotating channel 232 through going out on the oil dispenser 202 enters the B passage on the fuel-displaced dispense font 204, the B passage on the cradle left support abutment 102, the B passage on the cradle 101 in turn again, enters at last in the A gas channels 315 of A flexible support assembly 3; After the B road gas that B pore 224 enters enters in the B road gas passage 214 in the compound pipeline complex pipeline 203, C rotating channel 233 through going out on the oil dispenser 202 enters the C-channel on the fuel-displaced dispense font 204, the C-channel on the cradle left support abutment 102, the C-channel on the cradle 101 in turn again, enters at last in the B gas channels 314 of A flexible support assembly 3; Vacuum line is after vacuum hole 225 enters in the vacuum passage 215 in the compound pipeline complex pipeline 203, D rotating channel 234 through going out on the oil dispenser 202 enters the D passage on the fuel-displaced dispense font 204, the D passage on the cradle left support abutment 102, the D passage on the cradle 101 in turn again, realizes supporting member 306 end faces of A flexible support assembly 3 and the stable adhesive of blade at last.

Claims (3)

1. one kind is used for blade digital control processing flexibility and processing multi-point support device, it is characterized in that: be made up of cradle assemblies (1), working fluid feeding assembly (2), A flexible support assembly (3) and B flexible support assembly (6), A flexible support assembly (3) is identical with B flexible support assembly (6) structure;
Described cradle assemblies (1) includes cradle left support abutment (102), cradle right support abutment (105), cradle (101), cradle left support abutment (102) is connected on the fuel-displaced dispense font (204), cradle right support abutment (105) is connected on the tailstock tool (4), tailstock tool (4) top is equipped with B oil cylinder (7), and the two ends of cradle (101) are connected on cradle left support abutment (102), the cradle right support abutment (105);
Described working fluid feeding assembly (2) includes oil-feed distributor (201), goes out oil dispenser (202) and compound pipeline complex pipeline (203), the left end of compound pipeline complex pipeline (203) is socketed with bearing (207), bearing (ball) cover (208), locking nut (206), and bearing (ball) cover (208) is connected with oil-feed distributor (201), and locking nut (206) is used to compress bearing (207); The right-hand member of compound pipeline complex pipeline (203) with go out oil dispenser (202) and be connected; Compound pipeline complex pipeline (203) is provided with A asphalt channel (211), B asphalt channel (212), A road gas passage (213), the B road gas passage (214) that is used for gas circuit, oil circuit conducting, and vacuum passage (215), A screw (216) is installed in the die of compound pipeline complex pipeline (203); A screw (216) one ends are connected with transfer panel (209), are used for transfer panel (209) is strained; The periphery of oil-feed distributor (201) is provided with A oilhole (221), B oilhole (222), A pore (223), B pore (224), vacuum hole (225); Go out and be socketed with fuel-displaced dispense font (204) on the oil dispenser (202), A oil cylinder (205) is installed in the top of fuel-displaced dispense font (204), transfer panel (209) is installed in out on the oil dispenser (202), and realizes transfer panel (209) and the location that goes out oil dispenser (202) by pin (210); A anchor clamps (103) are connected with transfer panel (209), and the tenon (501) of blade (5) one ends is installed in the through hole of A anchor clamps (103), and blade (5) other end is installed on the B anchor clamps (104), and B anchor clamps (104) are installed in the left end of tailstock tool (4);
The lower end of the housing (303) in the described A flexible support assembly (3) is installed on the cradle (101) by screw, A end cap (301), B end cap (302) are installed in the housing (303), be socketed with A spacer sleeve (313) on the eccentric block of A end cap (301), A spacer sleeve (313) outer cover is connected to A spring (311), and the eccentric block of A end cap (301) is fastened on the inwall of A piston (309); Be socketed with B spacer sleeve (310) on the eccentric block of B end cap (302), B spacer sleeve (310) outer cover is connected to B spring (312), and the eccentric block of B end cap (302) is fastened on the inwall of B piston (304); One end of support bar (305) passes B cylinder (307), B end cap (302), A piston (309), A end cap (301), A cylinder (308) in turn, be installed with supporting member (306) on the end face of a described end of support bar (305), be installed with B screw (317) on the other end of support bar (305).
2. the blade digital control processing flexibility and processing multi-point support device that is used for according to claim 1, it is characterized in that: A end cap (301) is identical with B end cap (302) structure, it is an eccentric pyramidal structure, the flange (331) of A end cap (301) is provided with installing hole (332) all around, the center of flange (331) has through hole, the bottom of flange (331) is provided with flange (338), be respectively equipped with A eccentric block (333) on the outer rim of the through hole bottom flange (331), B eccentric block (334), C eccentric block (335), D eccentric block (336), E eccentric block (337), and B eccentric block (334) is identical with E eccentric block (337) structure, and C eccentric block (335) is identical with D eccentric block (336) structure.
3. the blade digital control processing flexibility and processing multi-point support device that is used for according to claim 1 is characterized in that: housing (303), A end cap (301), B end cap (302), A piston (309), B piston (304), A spring (311) and B spring (312) constitute a two-way hydraulic cylinder.
CNB2007101196103A 2007-07-27 2007-07-27 Flexible multipoint supported system in use for digital controlled machining laminae Expired - Fee Related CN100460147C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2007101196103A CN100460147C (en) 2007-07-27 2007-07-27 Flexible multipoint supported system in use for digital controlled machining laminae

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2007101196103A CN100460147C (en) 2007-07-27 2007-07-27 Flexible multipoint supported system in use for digital controlled machining laminae

Publications (2)

Publication Number Publication Date
CN101092020A CN101092020A (en) 2007-12-26
CN100460147C true CN100460147C (en) 2009-02-11

Family

ID=38990554

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2007101196103A Expired - Fee Related CN100460147C (en) 2007-07-27 2007-07-27 Flexible multipoint supported system in use for digital controlled machining laminae

Country Status (1)

Country Link
CN (1) CN100460147C (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102179784B (en) * 2011-04-28 2014-04-23 吉林大学 Multi-point floating-type flexible support device
CN108372411B (en) * 2016-12-20 2020-04-17 中国航空制造技术研究院 Flexible locking and positioning device and positioning method for blade air film hole machining
CN107234468B (en) * 2017-07-14 2023-07-14 庆铃汽车(集团)有限公司 Front axle two-end machining clamp and machining method
CN107654429A (en) * 2017-09-06 2018-02-02 东莞鸿图精密压铸有限公司 A kind of double oil circuit oil-inlet mechanisms of swinging
CN107813162B (en) * 2017-11-10 2019-05-14 中国航发航空科技股份有限公司 It is a kind of for processing the tooling of the multi-joint stator blade of large-scale combustion engine
CN113635093A (en) * 2021-08-01 2021-11-12 北京工业大学 Marine propeller dynamic support head based on mirror image milling form
CN116989028B (en) * 2023-09-27 2023-12-01 贵州乌江水电开发有限责任公司 Hydropower station wind deflector supporting device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1256466A (en) * 1969-03-01 1971-12-08
CN2840238Y (en) * 2005-09-19 2006-11-22 海南连达广告有限公司 Many pictures of numerical control 8-24 width of cloth reprint formula advertisement machine
CN1947930A (en) * 2006-11-10 2007-04-18 潘旭华 Supporting method for use during work-pieces being processed
CN1962145A (en) * 2006-11-24 2007-05-16 胡梁发 Method for processing blade form work piece and fittings dedicated therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1256466A (en) * 1969-03-01 1971-12-08
CN2840238Y (en) * 2005-09-19 2006-11-22 海南连达广告有限公司 Many pictures of numerical control 8-24 width of cloth reprint formula advertisement machine
CN1947930A (en) * 2006-11-10 2007-04-18 潘旭华 Supporting method for use during work-pieces being processed
CN1962145A (en) * 2006-11-24 2007-05-16 胡梁发 Method for processing blade form work piece and fittings dedicated therefor

Also Published As

Publication number Publication date
CN101092020A (en) 2007-12-26

Similar Documents

Publication Publication Date Title
CN100460147C (en) Flexible multipoint supported system in use for digital controlled machining laminae
CN201979328U (en) Clamp of eccentric bushing
CN201871978U (en) Indexing fixture for drilling on cone and ratholing on cylinder
CN201324954Y (en) Combined positioning and clamping device
CN2873424Y (en) Self locking type support clamping device
US3141365A (en) Portable lathe
CN202137599U (en) Fixture for cylindrical workpieces
CN110936084B (en) Clamp for assembling fan-shaped block assembly of aircraft engine
CN204148891U (en) The short cover automobile clamper of a kind of thin-walled
CN113059215B (en) Machining equipment for outer circle of large-diameter super-long workpiece
CN203003602U (en) Multi-station different-direction drilling clamp for spindly shafts
CN104029028A (en) Centre rest for lathe
CN202097606U (en) Evenly dividing and drilling clamp for ratchet of clutch
CN2843681Y (en) Rotary centering holder
CN110509070B (en) Planet carrier eccentric machining tool and machining process thereof
CN115464580A (en) Automobile hub clamp
CN103009189A (en) Slender axle multi-station different drilling fixture
CN110625201A (en) Shaft gear shaping clamp
CN110315129B (en) Metal pipe fitting cutting device
CN211162955U (en) Drilling clamp
CN103707135B (en) The device of a kind of clamping and positioning and calibration integration
CN208556088U (en) Drill jig special tooling
CN101491876A (en) Clamper for processing multi-angle hole of large rotor shaft and processing method thereof
CN215146515U (en) Guide wheel bearing press-in device
CN221088109U (en) Clamp for machining key groove of transverse shaft

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090211