CN103009333A - Indexable cutting insert for rough machining - Google Patents
Indexable cutting insert for rough machining Download PDFInfo
- Publication number
- CN103009333A CN103009333A CN2012105651866A CN201210565186A CN103009333A CN 103009333 A CN103009333 A CN 103009333A CN 2012105651866 A CN2012105651866 A CN 2012105651866A CN 201210565186 A CN201210565186 A CN 201210565186A CN 103009333 A CN103009333 A CN 103009333A
- Authority
- CN
- China
- Prior art keywords
- chip breaker
- face
- cutting edge
- concave face
- plane
- 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
Links
Images
Landscapes
- Milling Processes (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention discloses an indexable cutting insert for rough machining. An insert body is a polygonal body, the geometrical center is provided with a mounting through hole, a chip breaker body is arranged around the mounting through hole, and cutting units are respectively distributed at the included angle between each two neighboring sides. The indexable cutting insert is characterized in that each cutting unit consists of a main cutting edge and an auxiliary cutting edge; each of the main cutting edge and the auxiliary cutting edge is provided with a chamfer plane and an arris plane, and a first front insert face and a second front insert face are connected with the chip breaker body through concave bottoms; at each cutting unit, the chip breaker body is provided with a boss, the surface of the boss gradually rises to form a first chip breaker and a second chip breaker, a first concave is formed between the ridge of the first chip breaker and the ridge of the second chip breaker, a second concave is formed between the second chip breaker and the chip breaker body, and both the first concaves and the second concaves are smoothly connected with the concave bottoms. Under the premise of guaranteeing the edge strength of the insert, the cutting resistance is decreased, the indexable cutting insert has high chip-breaking ability, and the overall cutting performance is good.
Description
Technical field
The present invention relates to a kind of for the anti-dandruff rough machined Indexable cutting inserts of metal.
Background technology
The blade cut grooved that is used for the anti-dandruff rough machined Indexable cutting inserts of metal should design according to different machining conditions and processing object, should take into full account the composite factors such as intensity of processing environment, processing object, cutter hub material, coating, blade, to obtain better cutting ability and efficient.For the roughing blade, it in use both need adopt larger cutting feeding to satisfy the requirement of working (machining) efficiency, need guarantee cutting edge strength again, satisfied the requirement in service life, how obtaining best blade serviceability, is the key point of blade cut groove design.In each design considerations, the formed anterior angle of blade datum level and rake face is a key parameter, the excessive excellent cutting performance of anterior angle but its cutting edge break easily, so often cutting edge is adopted wide chamfered edge or reduces front corner structure with proof strength, but this mode of directly cutting edge being carried out simple chamfered edge processing, although can improve the impact property of blade, the suffered cutting resistance of blade is sharply increased, the wearing and tearing aggravation of blade.
On the other hand, the chip breaking Functional Design is also very important in the design of roughing Chip grooves, because the roughing cutting depth is large, transverse curvature rigidity is high, generally can not form long and thick screw type smear metal, and is most of take C type bits as main, its main chip breaking function is finished by the cutting unit of point of a knife, in the prior art, the more employing plane transition of chip-breaker is unfavorable for the chip breaking of roughing smear metal in the point of a knife cutting unit.Therefore, the groove design that is used for the roughing Indexable cutting inserts need further be optimized.
Summary of the invention
The objective of the invention is the deficiency for prior art, provide a kind of for the roughing Indexable cutting inserts, it can under the prerequisite that guarantees blade cutting edge intensity, reduce the cutting resistance that is subject in working angles, have good chip breaking ability, improve whole cutting ability.
Technical scheme of the present invention is:
A kind of indexable double-sided cutting insert, blade body is laterally zygomorphic polygonal body, comprises two end faces and side surface, and the blade body geometric center is provided with installs through hole 17, the chip breaker body arranges around through hole 17 is installed, and described two adjacent sides are connected by arc surface 14; Cutting unit is distributed in angle, two adjacent sides, and it is characterized in that: described cutting unit comprises: described end face and arc surface 14 intersect section and are main cutting edge 15, and it is front cutting edge 16 that described end face and side surface intersect section; Described main cutting edge 15 and front cutting edge 16 are provided with negative chamfered edge plane, major first face 20 conceited chamfered edge planes cave inward, continue to cave inward with major first face 20 smooth the second rake faces 21 that the connect major first face 20 that continues, connected with the chip breaker body by the concave face bottom surface;
In each cutting unit place, the chip breaker body is provided with the boss of contiguous main cutting edge 15, described boss is symmetrical arranged along angular bisector, the surface gradually raises and forms the first chip breaker 22 and the second chip breaker 23, described the first chip breaker 22 and the second chip breaker 23 are provided with the ridge peak across angular bisector, described ridge peak is to the contiguous height that also gradually reduces of side cutting edge to connecting with the concave face bottom surface is smooth, form the first concave face 46 between the ridge peak of the ridge peak of described the first chip breaker 22 and the second chip breaker 23, form the second concave face 47 between the second chip breaker 23 and the chip breaker body, described the first concave face 46 and the second concave face 47 all connect with the concave face bottom surface is smooth.
Described blade body is take the by-level section as datum plane, and described rib plane 19 is parallel with datum plane, width l
2Be 0.1mm-0.2mm.Described negative chamfered edge plane 18 width l
1Be 0.08mm-0.15mm, angle [alpha] is 5 °-15 °.
The anterior angle β of described the second rake face 21 is 12 °-18 °.
The ratio of the anterior angle β of the anterior angle γ of described major first face 20 and the second rake face 21 is 2/5-3/5, the width l of described major first face 20
3With rib plane 19 width l
2Ratio be 1-1.2.
Extend along the front cutting edge direction described concave face bottom surface, described concave face bottom surface and angular bisector intersection are peak, the minimum point of described concave face bottom surface is positioned at front cutting edge center vertical section, and the difference in height between described concave face bottom surface peak and the minimum point is 0.2mm-0.25mm.
Described the first chip breaker (22) end face is conical convex surface, and described conical convex surface and concave face bottom surface be by the arc surface transition, the summit of described conical convex surface apart from main cutting edge apart from l
4Be 1.5mm-1.8mm.
The difference in height l on described the second chip breaker (23) and rib plane (19)
5Be 0.12mm-0.15mm.
Beneficial effect of the present invention is:
In the present invention, because cutting edge is provided with negative chamfered edge plane, and has a hook angle structure, and the major first face that is connected with this plane, the second rake face have formed a side of concave face bottom surface, and the first chip breaker, the first concave face and the second chip breaker, the second concave face form the waveform extensional surface that gradually raises from the concave face bottom surface, namely become another side of concave face bottom surface, formed the chip-breaker of blade, the roughing indexable insert tip, throw away tip of above-mentioned grooved had the following advantages:
1, the chamfered edge face arranges the impact resistance that has strengthened the point of a knife top, major first face is as the transition face of rib plane and the second rake face, effectively having relaxed the chamfered edge face directly links to each other with the second rake face and forms the wedge angle part, reduced the suffered cutting resistance of blade in the working angles, and the virtual angle that guarantees chamfered edge face and the second rake face is constant, namely do not reduce anterior angle and the sharpness of cutting edge is weakened, do not enlarge markedly cutting force because of the chamfered edge face yet, guaranteeing to have improved the cutting ability of blade under the impact resistance condition of blade base.
2, the chip-breaker of the formations such as concave face bottom surface has guaranteed chip space, set secondary chip breaker structure, i.e. the first chip breaker, the first concave face and the second chip breaker, the gradually rising waveform extensional surface that the second concave face forms can guide smear metal effectively, the smear metal of the different-thickness that produces in the roughing process all can effectively be fractureed, the smear metal of thinner thickness is namely fractureed at the first chip breaker, the slightly large smear metal of thickness is fractureed by the first concave face and the second chip breaker through the first chip breaker is curling, this waveform extensional surface can effectively be controlled chip-flowing, smoothly chip removal, reduce blade abrasion, reduce cutting temperature, guarantee the chip breaking effect, avoided the phenomenon of sticking cutter.
3, the profile exquisiteness is attractive in appearance, has optimized the overall structure of blade.
Description of drawings
Fig. 1 is structural representation stereogram of the present invention;
Fig. 2 is cutting unit partial structurtes signal enlarged drawing of the present invention;
Fig. 3 is top view of the present invention;
Fig. 4 is side view of the present invention;
Fig. 5 is the A-A sectional schematic diagram of Fig. 3 of the present invention.
Among the figure:
Arc surface-14, main cutting edge-15, front cutting edge-16 is installed through hole-17, negative chamfered edge plane-18, rib plane-19, major first face-, 20, the second rake faces-21, the first chip breaker-22, the second chip breaker-23, the first concave face-46, the second concave face 47.
The specific embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1:
A kind of indexable double-sided cutting insert, blade body is symmetrical square body up and down, extremely shown in Figure 5 such as Fig. 1, comprise two end faces and side surface, be provided with four connecting surfaces on the end face, blade is positioned on the cutter connecting surface by connecting surface, and particularly, it is fixing to pass the installation through hole 17 that is positioned at the blade body geometric center by hold-down screw.The both ends of the surface of described blade body are symmetrical arranged take middle discontinuity surface as datum plane m, and described two adjacent sides are connected by arc surface 14; Eight cutting units are distributed in the up and down angle, two adjacent sides of two end faces, and described cutting unit comprises: described end face and arc surface 14 intersect the main cutting edge 15 that section forms, and it is front cutting edge 16 that described end face and side surface intersect section; Described main cutting edge 15 and front cutting edge 16 are provided with negative chamfered edge plane 18, and described negative chamfered edge plane 18 is 5 °-15 ° with datum plane angle α, described negative chamfered edge plane 18 width l
1Be 0.08mm-0.15mm, rib plane 19 is connected with negative chamfered edge, and rib plane 19 is parallel with datum plane, width l
2Be 0.1mm-0.2mm; Described end face cave inward from rib plane 19 form that major first face 20, the second rake faces 21 continue that major first face 20 continues to cave inward and with its smooth connection, form the concave face bottom surface of end face; Extend along front cutting edge 16 directions described concave face bottom surface, described concave face bottom surface and main cutting edge 15 angular bisector intersections are peak, the minimum point of described concave face bottom surface is positioned at the front cutting edge central cross-section, and the difference in height between described peak and the minimum point is 0.2mm-0.25mm.
The chip breaker body that raises up from the concave face bottom surface arranges around through hole 17, described chip breaker body is provided with a plurality of boss that are respectively adjacent to each main cutting edge 15, described boss is symmetrical arranged take angular bisector as symmetry axis, the surface of described boss gradually raises along angular bisector to the chip breaker body and forms the first chip breaker 22 and the second chip breaker 23, described the first chip breaker 22 end faces are that height is along the angular bisector conical convex surface cumulative to the center, described conical convex surface and concave face bottom surface arc transition, the summit of described conical convex surface apart from main cutting edge apart from l
3Be 1.5mm-1.8mm.
Described the first chip breaker 22 and the second chip breaker 23 are provided with the ridge peak across angular bisector, two ends, ridge peak are respectively to the contiguous height that also gradually reduces of side cutting edge to connecting with the concave face bottom surface is smooth, form the first concave face 46 between the ridge peak of the ridge peak of described the first chip breaker 22 and the second chip breaker 23, form the second concave face 47 between the second chip breaker 23 and the chip breaker body, described the first concave face 46 and the second concave face 47 all connect with the concave face bottom surface is smooth.
As preferred forms of the present invention, the anterior angle β of described the second rake face 21 is preferably 12 °-18 °.On this basis, the ratio that the present invention also limits the anterior angle β of the anterior angle γ of major first face 20 and the second rake face 21 is 2/5-3/5, and the combination of the two is in the optimized scope, is 15 degree such as the second anterior angle, the first anterior angle then is 9 degree, forms the corresponding relation of optimizing between the two.And further limit the width l of major first face 20
3With rib plane 19 width l
2Ratio be 1:1-1:1.2, be 0.2mm such as the width on rib plane 19, then the width of major first face is no more than 0.24mm, the geometry of cutting edge can reach the optimized cutting performance of blade after the above-mentioned Optimal Parameters combination, guarantees enough chip spaces.
The difference in height l on described the second chip breaker 23 and rib plane 19
5Be 0.12mm-0.15mm, above-mentioned restriction can realize optimum chip breaking effect, and then the resistance that runs into of smear metal is too little to be lower than this scope, can't realize chip breaking, and then resistance is too large to be higher than this scope, is unfavorable for smooth chip removal.
Above-described embodiment only is preferred embodiment of the present invention, should be understood that, for the person of ordinary skill of the art, not breaking away under the principle prerequisite of the present invention, can also make some equivalents, such as the basic profile of blade except can being the square, can also be parallelogram, rhombus, triangle, pentagon, hexagon etc.These equivalents all should be considered as protection scope of the present invention.
Claims (7)
1. indexable double-sided cutting insert, blade body is laterally zygomorphic polygonal body, comprises two end faces and side surface, and the blade body geometric center is provided with installs through hole (17), the chip breaker body is around installing through hole (17) setting, and described two adjacent sides are connected by arc surface (14); Cutting unit is distributed in angle, two adjacent sides, and it is characterized in that: described cutting unit comprises: described end face and arc surface (14) intersect section and are main cutting edge (15), and it is front cutting edge (16) that described end face and side surface intersect section; Described main cutting edge (15) and front cutting edge (16) are provided with negative chamfered edge plane (18) and rib plane (19), major first face (20) caves inward from the rib plane, continue to cave inward with smooth the second rake face (21) that connects of major first face (20) major first face (20) that continues, connected with the chip breaker body by the concave face bottom surface;
In each cutting unit place, the chip breaker body is provided with the boss of contiguous main cutting edge (15), described boss is symmetrical arranged along angular bisector, the surface gradually raises and forms the first chip breaker (22) and the second chip breaker (23), described the first chip breaker (22) and the second chip breaker (23) are provided with the ridge peak across angular bisector, described ridge peak is to the contiguous height that also gradually reduces of side cutting edge to connecting with the concave face bottom surface is smooth, form the first concave face (46) between the ridge peak of the ridge peak of described the first chip breaker (22) and the second chip breaker (23), form the second concave face (47) between the second chip breaker (23) and the chip breaker body, described the first concave face (46) and the second concave face (47) all connect with the concave face bottom surface is smooth.
2. indexable double-sided cutting insert according to claim 1 is characterized in that, described blade body is take the by-level face as datum plane, and described negative chamfered edge plane (18) is 5 °-15 ° with datum plane angle α, described negative chamfered edge plane (18) width l
1Be 0.08mm-0.15mm, connected rib plane (19) width l
2Be 0.1mm-0.2mm.
3. indexable double-sided cutting insert according to claim 2 is characterized in that, the anterior angle β of described the second rake face (21) is 12 °-18 °.
4. indexable double-sided cutting insert according to claim 3 is characterized in that, the ratio of the anterior angle β of the anterior angle γ of described major first face (20) and the second rake face (21) is 2/5-3/5, the width l of described major first face (20)
3Width l with rib plane (19)
2Ratio be 1/1-1/1.2.
5. indexable double-sided cutting insert according to claim 2, it is characterized in that: extend along the front cutting edge direction described concave face bottom surface, described concave face bottom surface and angular bisector intersection are peak, the minimum point of described concave face bottom surface is positioned at front cutting edge center vertical section, and the difference in height between described concave face bottom surface peak and the minimum point is 0.2mm-0.25mm.
6. indexable double-sided cutting insert according to claim 1, it is characterized in that, described the first chip breaker (22) end face is conical convex surface, and described conical convex surface and concave face bottom surface be by the arc surface transition, the summit of described conical convex surface apart from main cutting edge apart from l
4Be 1.5mm-1.8mm.
7. indexable double-sided cutting insert according to claim 1 is characterized in that, the difference in height l on described the second chip breaker (23) and rib plane (19)
5Be 0.12mm-0.15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210565186.6A CN103009333B (en) | 2012-12-24 | 2012-12-24 | Indexable cutting insert for rough machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210565186.6A CN103009333B (en) | 2012-12-24 | 2012-12-24 | Indexable cutting insert for rough machining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103009333A true CN103009333A (en) | 2013-04-03 |
| CN103009333B CN103009333B (en) | 2015-01-21 |
Family
ID=47958726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210565186.6A Active CN103009333B (en) | 2012-12-24 | 2012-12-24 | Indexable cutting insert for rough machining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103009333B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551615A (en) * | 2013-11-01 | 2014-02-05 | 株洲欧科亿硬质合金有限公司 | Double-sided cutting blade capable of transferring |
| CN104308206A (en) * | 2014-10-21 | 2015-01-28 | 台州市锐安硬质合金工具有限公司 | Indexable cutter blade for turning |
| CN104400029A (en) * | 2014-11-07 | 2015-03-11 | 江西稀有稀土金属钨业集团有限公司 | Preparation method for effectively improving use property of indexable cutter blade |
| CN107414114A (en) * | 2017-09-26 | 2017-12-01 | 株洲欧科亿数控精密刀具股份有限公司 | A kind of Double-sided, indexable turning insert for roughing high temperature alloy |
| CN111054961A (en) * | 2019-11-01 | 2020-04-24 | 株洲欧科亿数控精密刀具股份有限公司 | Indexable insert and cutter for large-feed milling |
| CN113182575A (en) * | 2021-05-11 | 2021-07-30 | 哈尔滨理工大学 | Heat-resistant anti-friction high-strength milling cutter blade for heavy cutting |
| CN113182575B (en) * | 2021-05-11 | 2024-05-28 | 哈尔滨理工大学 | High-strength milling blade for heavy cutting, heat resistance and antifriction |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6217264B1 (en) * | 1998-05-30 | 2001-04-17 | Korloy, Inc. | Cutting insert having an improved chip breaker |
| CN1490105A (en) * | 2003-08-27 | 2004-04-21 | 株洲钻石切削刀具股份有限公司 | Positionable milling cutter |
| CN101695761A (en) * | 2009-10-23 | 2010-04-21 | 株洲钻石切削刀具股份有限公司 | Cutting blade for processing soft metal materials |
| CN202087853U (en) * | 2010-12-07 | 2011-12-28 | 中硬金属切削(大连)有限公司 | Double groove type indexable vertical numerical control turning blade for heavy cutting |
| CN203091768U (en) * | 2012-12-24 | 2013-07-31 | 株洲欧科亿硬质合金有限公司 | Indexable cutting blade for rough machining |
-
2012
- 2012-12-24 CN CN201210565186.6A patent/CN103009333B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6217264B1 (en) * | 1998-05-30 | 2001-04-17 | Korloy, Inc. | Cutting insert having an improved chip breaker |
| CN1490105A (en) * | 2003-08-27 | 2004-04-21 | 株洲钻石切削刀具股份有限公司 | Positionable milling cutter |
| CN101695761A (en) * | 2009-10-23 | 2010-04-21 | 株洲钻石切削刀具股份有限公司 | Cutting blade for processing soft metal materials |
| CN202087853U (en) * | 2010-12-07 | 2011-12-28 | 中硬金属切削(大连)有限公司 | Double groove type indexable vertical numerical control turning blade for heavy cutting |
| CN203091768U (en) * | 2012-12-24 | 2013-07-31 | 株洲欧科亿硬质合金有限公司 | Indexable cutting blade for rough machining |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551615A (en) * | 2013-11-01 | 2014-02-05 | 株洲欧科亿硬质合金有限公司 | Double-sided cutting blade capable of transferring |
| CN103551615B (en) * | 2013-11-01 | 2016-01-20 | 株洲欧科亿硬质合金有限公司 | Indexable double-sided cutting insert |
| CN104308206A (en) * | 2014-10-21 | 2015-01-28 | 台州市锐安硬质合金工具有限公司 | Indexable cutter blade for turning |
| CN104308206B (en) * | 2014-10-21 | 2018-02-02 | 台州市锐安硬质合金工具有限公司 | Turning indexable insert tip, throw away tip |
| CN104400029A (en) * | 2014-11-07 | 2015-03-11 | 江西稀有稀土金属钨业集团有限公司 | Preparation method for effectively improving use property of indexable cutter blade |
| CN107414114A (en) * | 2017-09-26 | 2017-12-01 | 株洲欧科亿数控精密刀具股份有限公司 | A kind of Double-sided, indexable turning insert for roughing high temperature alloy |
| CN107414114B (en) * | 2017-09-26 | 2023-09-08 | 株洲欧科亿数控精密刀具股份有限公司 | Double-sided indexable turning blade for rough machining of high-temperature alloy |
| CN111054961A (en) * | 2019-11-01 | 2020-04-24 | 株洲欧科亿数控精密刀具股份有限公司 | Indexable insert and cutter for large-feed milling |
| CN111054961B (en) * | 2019-11-01 | 2021-11-16 | 株洲欧科亿数控精密刀具股份有限公司 | Indexable insert and cutter for large-feed milling |
| CN113182575A (en) * | 2021-05-11 | 2021-07-30 | 哈尔滨理工大学 | Heat-resistant anti-friction high-strength milling cutter blade for heavy cutting |
| CN113182575B (en) * | 2021-05-11 | 2024-05-28 | 哈尔滨理工大学 | High-strength milling blade for heavy cutting, heat resistance and antifriction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103009333B (en) | 2015-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103009333B (en) | Indexable cutting insert for rough machining | |
| EP1782902B1 (en) | Replaceable-blade cutting insert and corner milling cutter with replaceable cutting insert | |
| JP6127439B2 (en) | Replaceable cutting tool and cutting insert | |
| US9630257B2 (en) | Cutting insert | |
| EP2838682B1 (en) | Cutting insert chip-control arrangement | |
| EP2258504B1 (en) | Radius end mill and cutting insert | |
| US20120057943A1 (en) | Milling cutting insert | |
| RU2012134433A (en) | CUTTING PLATE HAVING CUTTING EDGES WITH DEPTHED AREAS | |
| CN203091768U (en) | Indexable cutting blade for rough machining | |
| JP2013176846A (en) | Face milling insert | |
| CN103209792A (en) | Cutting insert | |
| CN103551615A (en) | Double-sided cutting blade capable of transferring | |
| CN203610753U (en) | Double-side indexable milling blade | |
| CN203541585U (en) | Rotatable double-faced cutting blade | |
| JP2010064224A (en) | Cutting insert and insert detachable type rotary cutting tool | |
| EP3424631B1 (en) | Cutting insert and cutting tool | |
| CN110695386A (en) | Indexable turning insert | |
| US10987740B2 (en) | Cutting insert having land with spaced apart upwardly bulging land portions and non-rotary cutting tool provided therewith | |
| CN205551503U (en) | Cutting cutter | |
| CN209935962U (en) | Hexagonal blade square shoulder milling cutter | |
| CN207402125U (en) | A kind of roughing turning insert | |
| CN111001833A (en) | Superhard blade with superhard strip insert | |
| JP3109561B2 (en) | Indexable inserts and cutting tools | |
| CN210010471U (en) | Grooving blade for grooving and turning | |
| CN203711879U (en) | Indexable inner hole turning blade |
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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Dong Jia Duan high-tech park in Hunan province 412008 Zhuzhou city Lusong District venture four Road No. eight Patentee after: Zhuzhou OUKE CNC precision cutting tools Co., Ltd. Address before: Dong Jia Duan high-tech park in Hunan province 412008 Zhuzhou city Lusong District venture four Road No. eight Patentee before: Zhuzhou OKE Carbide Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 412500, Hunan County, Zhuzhou province Yanling County entrepreneurship Park entrepreneurial road Patentee after: Zhuzhou OUKE CNC precision cutting tools Limited by Share Ltd Address before: Dong Jia Duan high-tech park in Hunan province 412008 Zhuzhou city Lusong District venture four Road No. eight Patentee before: Zhuzhou OUKE CNC precision cutting tools Co., Ltd. |