CN201192736Y - Level loading and self rolling facing mill - Google Patents
Level loading and self rolling facing mill Download PDFInfo
- Publication number
- CN201192736Y CN201192736Y CNU2008200773279U CN200820077327U CN201192736Y CN 201192736 Y CN201192736 Y CN 201192736Y CN U2008200773279 U CNU2008200773279 U CN U2008200773279U CN 200820077327 U CN200820077327 U CN 200820077327U CN 201192736 Y CN201192736 Y CN 201192736Y
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- tool rest
- cutter
- cutting
- cutter hub
- blade
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Abstract
The utility model provides a flush type self-rolling plain milling cutter, which mainly comprises a cutter body, a tool rest groove, a cutting tool rest, a slicking tool rest, a positioning plane, a bearing, a cutting blade and a slicking blade. The mill cutter adopts a structure with grooves in odd number five. The tool rest adopted the combined structure of the cutting tool rest and the slicking tool rest. The cutting tool rest adopt a cutter-shaft supporting structure combining an angular contact bearing and a combined bear. The slicking tool rest adopts a cutter-shaft supporting structure combining a bearing ring capable of enclasping and sliding up and down with a combined bearing. The tool rest groove adopts an over-positioning structure limited repeatedly by a tapered surface and a plane, and inclines in the axial and the radial directions, so that the self-rolling blade can obtain a blade inclination to ensure the continuous rotation of the blade during the machining process. The blade adopts a flush type structure, and the surface machining is completely finished by the slicking blade. The plain milling cutter has the advantages of reasonable design, compact structure, good cutting performance, high cutting speed and high machining precision. The cutting speed can be increased by 50%, the machining precision can be improved by 1-2 levels, and the surface roughness can reach Ra0.8 Mum. During the milling process, no cooling lubricating liquid is used, and the milling is a dry type, therefore, the environment pollution is prevented, and the cutting and the slicking functions can complement mutually.
Description
Technical field
The utility model relates to a kind of paperback self-rolling type plain milling cutter, belongs to the technical field of machining tool.
Background technology
In machining, metal cutting tool is crucial, in space flight, aviation and war industry, difficult-to-machine material is more and more, and is more and more higher to the requirement of metal cutting tool, because the cutting temperature height, tool wear is fast, the normal cooling-lubricant that uses had both increased cost, had brought pollution again.
In cutting tool, milling cutter is that the most frequently used machine adds one of cutter, especially the milling cutter on end face, plane has more generality, because the slabbing amount of machine components is big, the consumption of cutter is very big, and milling speed is low, milling is of poor quality, impel people that milling cutter is carried out architecture advances, but still there are a lot of deficiencies in prior art, a lot of contents that need improvement and inquire into are all being arranged on the cutter structure, on the angle, on the cutting ability.
For example: 8721546.7, rolling cut end mill(ing) cutter patent, upright assembling structure tool inclination angle is adjustable, the knife rest radial position is adjustable, palette knife is signed an undertaking, and structure is difficult to guarantees the consistent of the axial height of each blade and cutting edge inclination, directly influence the crudy and the precision of cutter, the upright dress of blade dual-support structure complexity, the more change poles inconvenience of blade, the paperback structural design of blade is unreasonable, and blade can not be realized rotation in the processing.
For example: 02210332.5, self-rolling type cutting end milling cutter patent, uniform 3-18 tourelles of cutter hub periphery, blade radially drift angle is 8 °-28 °, to guarantee the continuous rotation of blade work in-process, but because the radial and axial position of blade is all fixing, and the site error of blade diameter sum of errors installing hole makes 3-18 blades just inconsistent in the axial direction, causes the milling precision low very poor with surface roughness.
Summary of the invention
Goal of the invention
The purpose of this utility model is exactly at disadvantages of background technology, cutter hub, tool rest to the self-rolling type plain milling cutter carry out structural improvement, change cutter hub groove number, change tool rest structure and location benchmark, change tool rest tool cutting edge angle, auxiliary angle, rake face, back knife face direction, position, the cancellation cooling fluid is with cutting ability, the cutting environment that improves the self-rolling type end mill(ing) cutter, to increase substantially the cutting speed of plain milling cutter, improve precision, the surface roughness of workpiece to be machined.
Technical scheme
The utility model primary structure is made up of: cutter hub, tool rest groove, cutting tool rest, smoothing tool rest, cutter hub axis hole, cutter hub keyway, limited block, locating slot, locating surface, cutting tip, wiper inserts; Cutter hub 1 is a disc, and the centre is a cutter hub axis hole 12, in cutter hub 1 upper surface cutter hub keyway 13 is set, and in the middle part of cutter hub 1, the outer symmetrical of cutter hub axis hole 12 four screws 23 is set; Peripheral uniform five tool rest grooves 2,3,4,5,6 at cutter hub 1, tool rest groove 2,3,4,5,6 inside portions are provided with plane positioning face 21, tapering locating surface 22, screw 20, cutting tool rest 7,8,9,10 is set in tool rest groove 2,3,4,5, spacing by limited block 14,15,16,17 respectively, and fixing by screw 19; Smoothing tool rest 11 is set in tool rest groove 6, spacing by limited block 18, and fixing by screw 19; Conical cutting tip 24 is equipped with in bottom at cutting tool rest 7,8,9,10, and conical wiper inserts 25 is housed in the bottom of smoothing tool rest 11.
Described cutting tool rest 7,8,9,10, structure is the same, the centre of cutting tool rest 7,8,9,10 is a cutter shaft 27, in the front portion of cutter shaft 27 angular contact bearing 28 is housed, combination bearing 29 is equipped with at the rear portion, at the front end of cutter shaft 27 edge bearing 26 is housed, the front end of edge bearing 26 is equipped with cutting tip 24, and it is fixing by screw 32, in the rear end of cutter shaft 27 end cap 30 is housed, pressure ring 31 is housed in the rear end of end cap 30, and fixing by nut 33; The right side of cutting tool rest 7,8,9,10 is a positioning boss 34, and the both sides of positioning boss 34 are tapering locating surface 35, plane positioning face 36.
Described smoothing tool rest 11, inside is cutter shaft 27, sliding axle carrier ring 37, properties of journal bearing lubricated ring 38 are equipped with in the front portion of cutter shaft 27, and are fixed by screw 39 obvolvents, at the rear portion of cutter shaft 27 combination bearing 29 are housed, front end at cutter shaft 27 is equipped with edge bearing 26, the front end of edge bearing 26 is equipped with wiper inserts 25, and fixing by screw 32, in the rear end of cutter shaft 27 end cap 30 is housed, pressure ring 31 is equipped with in the rear end of end cap 30, and fixing by nut 33; In the right side of smoothing tool rest 11 is positioning boss 34, is tapering locating surface 35, plane positioning face 36 in the both sides of positioning boss 34.
Described cutter hub 1, with cutting connecting of tool rest 7,8,9,10, smoothing tool rest 11 is that crossing of the conical surface+plane located connection, the plane positioning face 21 of cutter hub 1, tapering locating surface 22 are corresponding identical with plane positioning face 36, the tapering locating surface 35 of cutting tool rest 7,8,9,10, smoothing tool rest 11 respectively, the tapering locating surface 22 of cutter hub 1 equates with tapering locating surface 35 its awl oblique angles of tool rest 7,8,9,10,11, is 15 °.
The last sliding axle carrier ring 37 of described smoothing tool rest 11, properties of journal bearing lubricated ring 38 are bearing shell formula structure, and last sliding axle carrier ring 37 is semicircle, and the outside is a cylindrical portion 41, and inside is axle hole 42; Properties of journal bearing lubricated ring 38 is semicircle, and the outside is a cylindrical portion 43, and inside is axle hole 44, is provided with groove 40 in the middle lower portion of cylindrical portion 43.
Described cutting tip 24 is conical with wiper inserts 25, and structure is the same, and the centre is a blade aperture 50, top is back knife face 51, and the bottom is an installed surface 54, and awl circle portion is a rake face 52, back knife face 51 is a blade 53 with rake face 52 cross-shaped portions, and cutting tip 24 is 7 ° with the anterior angle of wiper inserts 25.
Tapering locating surface 22 in the described tool rest groove 2,3,4,5,6 favours cutter hub central axis 55, and tapering locating surface 22 is 5 ° with the inclination angle of cutter hub central axis 55.
Described cutting tip 24 and wiper inserts 25, the setting height(from bottom) difference on cutter hub 1, cutting tip 24 is higher than wiper inserts 250.05mm.
Beneficial effect
The utility model is compared with background technology has tangible advance, it is to improve tool life, cutting speed and precision are purpose, structure of the cutter body adopts odd number, five slot types, blade adopts four cutting tips and a wiper inserts to be used, cutting tip is finished the cutting function, wiper inserts polishing plane, both improved cutting speed, again workpiece planarization being carried out polishing puts in order, improved machining accuracy, surface roughness, the tool rest groove adopts the positioning form of crossing of plane+conical surface, after tool rest is installed, make cutting anterior angle from roll blade, relief angle, variation has taken place in cutting edge inclination, the blade work in-process is rotated automatically, cut sharper, cutting ability is more reasonable, wiper inserts and tool rest adopt combination bearing and last, the properties of journal bearing lubricated ring fixing structure, on, the properties of journal bearing lubricated ring can be fixed the cutter shaft obvolvent, make that radially string is moving in milling from roll blade, improved the precision of milling plane, do not use cooling-lubricant during milling, for doing milling, free from environmental pollution, this milling cutter construction is reasonable, and mechanical property is superior, cutting tip and wiper inserts have complementary functions, cutting tip Milling Process surplus, wiper inserts is finished the polishing of finished surface, and cutting speed can improve 50%, cutter life can improve 5 times, machining accuracy can improve 1-2 grades, and surface roughness can reach Ra0.8 μ m, the cutting anterior angle, relief angle, cutting edge inclination is reasonable, cutting speed is fast, the precision height, cutter is wear-resisting durable, is very good self-rolling type plain milling cutter.
Description of drawings
Fig. 1 is overall structure figure
Fig. 2 is the structure of the cutter body front view
Fig. 3 is cutter hub and tool rest positioning states figure
Fig. 4 is that the A of Fig. 2 is to view
Fig. 5 is that the B of Fig. 2 is to view
Fig. 6 is the axial installation site figure of cutting tip and wiper inserts
Fig. 7 is cutting tool rest front view
Fig. 8 is cutting tool rest side view
Fig. 9 is a smoothing tool rest front view
Figure 10 is a smoothing tool rest side view
Figure 11 is last sliding axle carrier ring front view
Figure 12 is last sliding axle carrier ring side view
Figure 13 is a properties of journal bearing lubricated ring front view
Figure 14 is a properties of journal bearing lubricated ring side view
Figure 15 is blade structure figure
Figure 16 is the blade front view
Shown in the figure, list of numerals is as follows:
1, cutter hub, 2, the tool rest groove, 3, the tool rest groove, 4, the tool rest groove, 5, the tool rest groove, 6, the tool rest groove, 7, the cutting tool rest, 8, the cutting tool rest, 9, the cutting tool rest, 10, the cutting tool rest, 11, the smoothing tool rest, 12, the cutter hub axis hole, 13, the cutter hub keyway, 14, limited block, 15, limited block, 16, limited block, 17, limited block, 18, limited block, 19, screw, 20, screw, 21, the plane positioning face, 22, the tapering locating surface, 23, screw, 24, cutting tip, 25, wiper inserts, 26, edge bearing, 27, cutter shaft, 28, angular contact bearing, 29, combination bearing, 30, end cap, 31, pressure ring, 32, screw, 33, nut, 34, positioning boss, 35, the tapering locating surface, 36, the plane positioning face, 37, last sliding axle carrier ring, 38, the properties of journal bearing lubricated ring, 39, screw, 40, groove, 41, cylindrical portion, 42, the axle hole, 43, cylindrical portion, 44, the axle hole, 50, blade aperture, 51, back knife face, 52, rake face, 53, blade, 54, installed surface, 55, the cutter hub central axis.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Shown in Fig. 1,2,3,4,5,6, be cutter hub and tool rest groove structure chart, cutter hub 1 is odd number, five slot type structures, and cutting tool rest 7,8,9,10 is installed in tool rest groove 2,3,4,5, and smoothing tool rest 11 is installed in tool rest groove 6.
Tapering locating surface 22 in the tool rest groove tilts with cutter hub central axis 55, and its radial rake is α
f=5 ° ± 1 '.
Axial inclination α
pWith radial rake α
fWill become the axial relief angle and the radial clearance angle of cutting tip 24 and wiper inserts 25 after tool rest is installed, acting in conjunction forms the cutting edge inclination of blade, thereby makes the blade work in-process be able to continuous rotation, makes cutting ability better.
The cutting tip 24 of cutting tool rest 7,8,9,10 correspondences is on same horizontal line, the wiper inserts 25 of smoothing tool rest 11 correspondences is lower than cutting tip 24, its axial vertical range difference is 0.05mm, adjust acquisition by limited block 14,15,16,17,18, finished surface is finally finished by wiper inserts 25 like this, has created condition for improving machining accuracy and surface quality.
Plane of orientation in the tool rest groove tilts with respect to cutter hub central axis 55, makes blade obtain axial relief angle α
p, the tapering locating slot makes blade obtain radial clearance angle α with respect to the inclination of cutter hub central axis 55
f, acting in conjunction has formed the nominal cutting edge inclination λ of blade, and their pass is:
Make blade in machining, be achieved continuous rotation, and make cutter obtain very high durability.
Cutter hub five slot types, odd structure, four cutting tip functions are for removing allowance, and a wiper inserts function is to finish the polishing of finished surface.
Shown in Fig. 7,8, be cutting tool rest 7,8,9,10 structure charts, structure is the same, has interchangeability, form by cutter shaft 27, angular contact bearing 28, combination bearing 29 in the tool rest, cutting tip 24 is installed in the front end of cutter shaft and reinforces, and adds man-hour cutting force cutting tip 24 is rotated on cutter shaft 27 voluntarily, forms roll extrusion and cutting to surface of the work.
Shown in Fig. 9,10,11,12,13,14, be smoothing tool rest 11 and upper and lower sliding axle carrier ring 37,38 structure charts, smoothing tool rest 11 profiles are the same with cutting tool rest 7,8,9,10, its bearing is made up of upper and lower sliding axle carrier ring 37,38 and combination bearing 29, upper and lower sliding axle carrier ring 37,38 is bearing shell formula obvolvent cutter shaft 27 up and down, adjust screw 39 and can prevent that cutter shaft 27 from taking place axially and circular runout in working angles, make the rotation of cutter shaft 27 and wiper inserts 25 slow more and steady, help improving machining accuracy and quality.
Last sliding axle carrier ring 37 is made up of cylindrical portion 41, axle hole 42, and properties of journal bearing lubricated ring 38 is made up of cylindrical portion 43, axle hole 44, groove 40, and fastening by screw 39, realizes holding tightly cutter shaft 27.
Shown in Figure 15,16, structure chart for cutting tip 24 and wiper inserts 25, be conical, rake face 52 is a taper seat, the transversal that intersects with back knife face 51 is a blade 53, middle is that blade installing hole 50, bottom are installed surface 54, because blade 53 is a circumference, the rotation of blade makes the circumferential blade all will participate in cutting in the processing, created condition for improving tool life, cutting tip 24 and wiper inserts 25 have the interchangeability of geometric parameter, and hardness height, intensity are good, can use materials such as high-speed steel, carbide alloy, coated carbides to make.
Claims (8)
1. paperback self-rolling type plain milling cutter is characterized in that: primary structure by: cutter hub, tool rest groove, cutting tool rest, smoothing tool rest, cutter hub axis hole, cutter hub keyway, limited block, locating slot, locating surface, cutting tip, wiper inserts are formed; Cutter hub (1) is a disc, and the centre is cutter hub axis hole (12), in cutter hub (1) upper surface cutter hub keyway (13) is set, and in the middle part of cutter hub (1), the outer symmetrical of cutter hub axis hole (12) four screws (23) is set; Peripheral uniform five tool rest grooves (2,3,4,5,6) at cutter hub (1), tool rest groove (2,3,4,5,6) inside portion is provided with plane positioning face (21), tapering locating surface (22), screw (20), cutting tool rest (7,8,9,10) is set in tool rest groove (2,3,4,5), spacing by limited block (14,15,16,17) respectively, and fixing by screw (19); Smoothing tool rest (11) is set in tool rest groove (6), spacing by limited block (18), and fixing by screw (19); Conical cutting tip (24) is equipped with in bottom at cutting tool rest (7,8,9,10), in the bottom of smoothing tool rest (11) conical wiper inserts (25) is housed.
2. a kind of paperback self-rolling type plain milling cutter according to claim 1, it is characterized in that: described cutting tool rest (7,8,9,10), structure is the same, cutting tool rest (7,8,9,10) centre is cutter shaft (27), in the front portion of cutter shaft (27) angular contact bearing (28) is housed, combination bearing (29) is equipped with at the rear portion, front end at cutter shaft (27) is equipped with edge bearing (26), the front end of edge bearing (26) is equipped with cutting tip (24), and it is fixing by screw (32), in the rear end of cutter shaft (27) end cap (30) is housed, in the rear end of end cap (30) pressure ring (31) is housed, and fixing by nut (33); The right side of cutting tool rest (7,8,9,10) is positioning boss (34), and the both sides of positioning boss (34) are tapering locating surface (35), plane positioning face (36).
3. a kind of paperback self-rolling type plain milling cutter according to claim 1, it is characterized in that: described smoothing tool rest (11), inside is cutter shaft (27), sliding axle carrier ring (37) is equipped with in the front portion of cutter shaft (27), properties of journal bearing lubricated ring (38), and fix by screw (39) obvolvent, at the rear portion of cutter shaft (27) combination bearing (29) is housed, front end at cutter shaft (27) is equipped with edge bearing (26), the front end of edge bearing (26) is equipped with wiper inserts (25), and it is fixing by screw (32), in the rear end of cutter shaft (27) end cap (30) is housed, pressure ring (31) is equipped with in the rear end of end cap (30), and fixing by nut (33); In the right side of smoothing tool rest (11) is positioning boss (34), is tapering locating surface (35), plane positioning face (36) in the both sides of positioning boss (34).
4. a kind of paperback self-rolling type plain milling cutter according to claim 1, it is characterized in that: described cutter hub (1), with cutting tool rest (7,8,9,10), the positioning form of crossing on the conical surface+plane is adopted in the location of smoothing tool rest (11), the plane positioning face (21) of cutter hub (1), tapering locating surface (22) respectively with the cutting tool rest (7,8,9,10), the plane positioning face (36) of smoothing tool rest (11), tapering locating surface (35) is corresponding to coincide, the tapering locating surface (22) of cutter hub (1) and tool rest (7,8,9,10,11) its awl oblique angle of tapering locating surface (35) equates, is 15 °.
5. a kind of paperback self-rolling type plain milling cutter according to claim 1, it is characterized in that: the last sliding axle carrier ring (37) of described smoothing tool rest (11), properties of journal bearing lubricated ring (38) are bearing shell formula structure, last sliding axle carrier ring (37) is semicircle, the outside is cylindrical portion (41), and inside is axle hole (42); Properties of journal bearing lubricated ring (38) is semicircle, and the outside is cylindrical portion (43), and inside is axle hole (44), is provided with groove (40) in the middle lower portion of cylindrical portion (43).
6. a kind of paperback self-rolling type plain milling cutter according to claim 1, it is characterized in that: the plane positioning face (21) in the described tool rest groove (2,3,4,5,6) favours cutter hub central axis (55), and plane positioning face (21) is 8 ° with the inclination angle of cutter hub central axis (55).
7. a kind of paperback self-rolling type plain milling cutter according to claim 1, it is characterized in that: the tapering locating surface (22) in the described tool rest groove (2,3,4,5,6), favour cutter hub central axis (55), tapering locating surface (22) is 5 ° with the inclination angle of cutter hub central axis (55).
8. a kind of paperback self-rolling type plain milling cutter according to claim 1 is characterized in that: described cutting tip (24) and wiper inserts (25), and the setting height(from bottom) difference on cutter hub (1), cutting tip (24) is higher than wiper inserts (25) 0.05mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200773279U CN201192736Y (en) | 2008-05-23 | 2008-05-23 | Level loading and self rolling facing mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200773279U CN201192736Y (en) | 2008-05-23 | 2008-05-23 | Level loading and self rolling facing mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201192736Y true CN201192736Y (en) | 2009-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200773279U Expired - Fee Related CN201192736Y (en) | 2008-05-23 | 2008-05-23 | Level loading and self rolling facing mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201192736Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672252A (en) * | 2011-09-15 | 2012-09-19 | 庞勇 | Step-shaped chip separation disk milling cutter |
| CN104057133A (en) * | 2014-06-24 | 2014-09-24 | 芜湖求精紧固件有限公司 | Combined cutter and lathe |
| CN104057132A (en) * | 2014-06-24 | 2014-09-24 | 芜湖求精紧固件有限公司 | Cutterhead and lathe |
| CN104096894A (en) * | 2014-06-24 | 2014-10-15 | 芜湖求精紧固件有限公司 | Lathe |
| CN105458378A (en) * | 2014-09-26 | 2016-04-06 | 钴碳化钨硬质合金公司 | Rotary cutting tool |
| CN109562467A (en) * | 2016-12-22 | 2019-04-02 | 日东电工株式会社 | Building up by welding processing unit (plant) and building up by welding processing method |
| JP2019526459A (en) * | 2016-09-06 | 2019-09-19 | イスカル リミテッド | Insert adapter for cutting and tool assembly including the adapter |
| CN110899831A (en) * | 2019-12-16 | 2020-03-24 | 恒锋工具股份有限公司 | Broaching process method of small-modulus internal gear |
| CN110899794A (en) * | 2019-12-17 | 2020-03-24 | 山东大学 | Damping face milling cutter with tooth pitch and cutting speed capable of being adaptively and instantaneously changed |
-
2008
- 2008-05-23 CN CNU2008200773279U patent/CN201192736Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672252A (en) * | 2011-09-15 | 2012-09-19 | 庞勇 | Step-shaped chip separation disk milling cutter |
| CN104057133A (en) * | 2014-06-24 | 2014-09-24 | 芜湖求精紧固件有限公司 | Combined cutter and lathe |
| CN104057132A (en) * | 2014-06-24 | 2014-09-24 | 芜湖求精紧固件有限公司 | Cutterhead and lathe |
| CN104096894A (en) * | 2014-06-24 | 2014-10-15 | 芜湖求精紧固件有限公司 | Lathe |
| CN105458378A (en) * | 2014-09-26 | 2016-04-06 | 钴碳化钨硬质合金公司 | Rotary cutting tool |
| US10118236B2 (en) | 2014-09-26 | 2018-11-06 | Kennametal Inc. | Rotary cutting tool |
| JP7167007B2 (en) | 2016-09-06 | 2022-11-08 | イスカル リミテッド | Insert adapter for cutting and tool assembly containing this adapter |
| JP2019526459A (en) * | 2016-09-06 | 2019-09-19 | イスカル リミテッド | Insert adapter for cutting and tool assembly including the adapter |
| CN109562467A (en) * | 2016-12-22 | 2019-04-02 | 日东电工株式会社 | Building up by welding processing unit (plant) and building up by welding processing method |
| CN109562467B (en) * | 2016-12-22 | 2019-10-01 | 日东电工株式会社 | Building up by welding processing unit (plant) and building up by welding processing method |
| CN110899831A (en) * | 2019-12-16 | 2020-03-24 | 恒锋工具股份有限公司 | Broaching process method of small-modulus internal gear |
| CN110899831B (en) * | 2019-12-16 | 2023-12-26 | 恒锋工具股份有限公司 | Broaching process method for small-modulus internal gear |
| CN110899794A (en) * | 2019-12-17 | 2020-03-24 | 山东大学 | Damping face milling cutter with tooth pitch and cutting speed capable of being adaptively and instantaneously changed |
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| Date | Code | Title | Description |
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| 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 Termination date: 20110523 |