CN203541585U - Rotatable double-faced cutting blade - Google Patents
Rotatable double-faced cutting blade Download PDFInfo
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- CN203541585U CN203541585U CN201320681736.0U CN201320681736U CN203541585U CN 203541585 U CN203541585 U CN 203541585U CN 201320681736 U CN201320681736 U CN 201320681736U CN 203541585 U CN203541585 U CN 203541585U
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Abstract
The utility model provides a rotatable double-faced cutting blade. The rotatable double-faced cutting blade is provided with polygonal blade body with the upper portion and the lower portion symmetrical to each other, wherein the blade body comprises an upper end face, a lower end face and side surfaces, an installation through hole is formed in the geometrical center of the blade body, every two adjacent side surfaces are connected through an arc surface, a cutting unit is arranged on the included angle of every two adjacent side surfaces, each cutting unit comprises an auxiliary cutting edge, a main cutting edge, a chamfering plane, a rake face, the bottom surface of a concave surface and a chip breaking table body, each rake face, the bottom surface of the corresponding concave surface and the corresponding chip breaking table body are connected into a whole, each chip breaking table body is provided with multiple bosses which are close to the corresponding main cutting edges, the bosses are arranged symmetrically relative to an angular bisector, and the surface of each boss rises gradually to form a first chip breaking table and a second chip breaking table. According to the rotatable double-faced cutting blade, on the premise that the strength of the cutting edges of the blade is guaranteed, the surface quality of parts to be machined can be improved, the chip breaking capacity of the blade is improved, and the overall performance of the blade is improved.
Description
Technical field
The utility model belongs to Machining Technology for Cutting field, particularly relates to the indexable double-sided cutting insert of a kind of fine finishining.
Background technology
In the blade of or machining anti-dandruff at metal works, there is a class fine finishining blade to be only applicable to last one machining operation, this operation is essential guarantee workpiece to be machined dimensional accuracy and surface quality, its feature in process is mainly: cutting depth is shallow, the amount of feeding is little, the cutting force that blade itself is subject to is little, and the accessory size after machining is the final size of part, and surface accuracy requires high.This class fine finishining blade will, according to different machining conditions and processing object, design respectively different grooveds.In the groove design process of blade, take into full account the composite factors such as the intensity of processing environment, processing object, cutter hub material, coating and blade, design a kind of cutting tip of the grooved with unique shape, to obtain better crudy, working durability.Not identical to the Treatment Design of cutting edge and grooved for different machining conditions yet, because fine finishining blade cut amount is little, cutting resistance is little, the blade abrasion time is longer, its most important is the precision that will guarantee processing parts, surface quality, therefore, when design, cutting edge is relatively sharp, and trench structure is relatively complicated.
On the other hand, chip breaking Functional Design is also very important in the design of fine finishining Chip grooves, due to fine finishining blade cut depth as shallow, transverse curvature rigidity is low, especially, when processing P class material, generally can form long and thin screw type smear metal, chip breaking difficulty voluntarily, tend to form and be wound around, damage with finished surface, thereby affect the surface quality of processing parts.Chip breaking is mainly to be completed by the cutting unit of point of a knife, and in prior art, the modes that adopt single chip breaker, linear cutting edge, are affected by processing conditions larger more, and chip breaking is irregular, affects Surface Machining precision.Therefore, for the groove design of P class material fine finishining Indexable cutting inserts, be necessary further optimization.
Utility model content
Technical problem to be solved in the utility model is for the deficiencies in the prior art part, provide a kind of for accurately machined indexable double-sided cutting insert, it can guarantee under the prerequisite of blade cutting edge intensity, improve the surface quality of part to be processed, improve the chip breaking ability of blade, improve the overall performance of blade.
It is as follows that the utility model solves the problems of the technologies described above adopted technical scheme:
A kind of indexable double-sided cutting insert is provided, comprise and there is polygonal shape and laterally zygomorphic blade body, described blade body comprises upper surface, lower surface and side surface, described blade body geometric center place is provided with installation through hole, described two adjacent side are connected by arc surface, and the angle in described two adjacent side is provided with cutting unit, it is characterized in that, described cutting unit comprises the front cutting edge that is formed on described upper surface or lower surface and arc surface intersection location, be formed on the main cutting edge of described upper surface or lower surface and side surface intersection location, be formed on the chamfered edge plane of described main cutting edge and front cutting edge inner side, from described chamfered edge plane cave inward form rake face, from described rake face cave inward and with the smooth concave face bottom surface being connected of described rake face and the chip breaker body that is connected with concave face bottom surface, described rake face and concave face bottom surface, chip breaker body is connected as a single entity, wherein,
In each cutting unit place, described chip breaker body is provided with multiple boss that are respectively adjacent to main cutting edge, described boss is symmetrical arranged about angular bisector, described boss surface raises gradually and forms the first chip breaker, the second chip breaker, described the first chip breaker is the first ridge cutting edge of a knife or a sword of two projections at cutting unit place, described two the first ridge cutting edges of a knife or a sword are about angular bisector vertical plane symmetry, described the first ridge cutting edge of a knife or a sword starts gradually to raise from described rake face, and with described smooth being connected of the second chip breaker, described the second chip breaker is provided with the second ridge cutting edge of a knife or a sword across angular bisector, described the second ridge cutting edge of a knife or a sword also reduces height and smooth connection of described concave face bottom surface gradually to described main cutting edge is contiguous.
Further, described chip breaker body raises up from described concave face bottom surface and around through hole setting is installed, and is symmetrical arranged about angular bisector.
Further, described main cutting edge is Straight Line and Arc sword.
Further, described main cutting edge is 3-5 ° with the angle span that is connected plane, the peak of described main cutting edge is at position of tool tip place, away from position of tool tip place height, reduce gradually, described main cutting edge is that one section of circular arc connects away from point of a knife place, and its circular arc minimum point is 0.3-0.4mm to the distance of point of a knife.
Further, described blade body is symmetrical arranged take by-level as datum plane, and the angle of described chamfered edge plane and datum plane is-3-3 ° that described chamfered edge plane width is 0.05-0.13mm.
Further, the anterior angle of described rake face is 12-18 °.
Further, around described installation through hole, be circumferentially evenly equipped with four location secondary surfaces.
Further, described the first chip breaker is connected with described the second chip breaker in position of tool tip place, described the first chip breaker is raised on described concave face bottom surface, its minimum point starts gradually to raise from described rake face, distance between itself and main cutting edge is 0.3-0.6mm, and its peak is positioned on angular bisector.
Further, described the second chip breaker is positioned on chip breaker body, adjacent with position of tool tip, its distance to position of tool tip is 0.7-1.5mm, and described the second chip breaker and rake face seamlessly transit, have a chip space between the two, and to the direction away from position of tool tip, it is spacious that chip space becomes gradually.
Further, described concave face bottom surface is 1-1.8mm to the distance of point of a knife, the peak of described the first chip breaker is positioned on position of tool tip, the peak of described the first chip breaker and the difference in height of position of tool tip are 0.03-0.08mm, the peak of described the first chip breaker to the distance of position of tool tip is 0.8-1.2mm, described the second chip breaker is higher than the first chip breaker, and its difference in height is 0.1-0.15mm.
The indexable double-sided cutting insert that the utility model provides, with respect to prior art, has following beneficial effect:
(1) blade that is arranged so that of Straight Line and Arc sword makes main cutting edge more sharp in the situation that not changing anterior angle, can effectively reduce cutting force suffered in working angles, the edge of a knife is provided with chamfered edge simultaneously, effectively relax the sharp angles that rake face and rear knife face form, strengthened cutting edge strength, be adapted to cutting depth shallow, the fine finishining operating mode that the amount of feeding is little, especially be adapted to the cutting of P class material, can effectively prevent iron filings buildup, thereby improve Surface Machining precision.The cutting force that in working angles, blade itself is subject to is little, has improved the impact resistance of blade, has realized effective combination of intensity and wearability.
(2) rake face, concave face bottom surface and the first chip breaker, the second chip breaker forms chip-breaker and chip space jointly, two chip breaker designs can guarantee effectively chip breaking under different machining parameters condition, the first set chip breaker is near rake face, it is the back structure that a symmetry raises gradually, and be connected with the second chip breaker, this back formula structure gradually raising can effectively guide cutting to flow to, the iron filings of different-thickness all can flow according to the direction of setting, fractureing with regard to after curling through the first chip breaking of thinner thickness, after running into the second chip breaker after the thicker chip curling of thickness, fracture, and back spatial volume is little, curvature changes high, iron filings fracture comparatively fast, be not easy to produce built-up edge, when fine finishining, can greatly improve surface quality.By such structural design, can effectively control chip-flowing, chip removal smoothly, reduces blade abrasion, guarantee chip breaking effect, avoid sticky cutter phenomenon, effectively prevent that built-up edge and chip breaking are wound around, improve the cutting ability of blade, improve the surface accuracy of institute's processing parts simultaneously.
(3) beautify the external form of blade, optimized the overall structure of blade.
Accompanying drawing explanation
Fig. 1 is the stereogram of the indexable double-sided cutting insert that provides of the utility model one embodiment;
Fig. 2 is the partial enlarged drawing of angle in Fig. 1;
Fig. 3 is the top view of the indexable double-sided cutting insert that provides of the utility model one embodiment;
Fig. 4 is the side view of the indexable double-sided cutting insert that provides of the utility model one embodiment;
Fig. 5 is the cutaway view of Fig. 3 along A-A direction.
Reference numeral in Figure of description is as follows:
The specific embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Please refer to Fig. 1 to Fig. 5, the indexable double-sided cutting insert that the utility model one embodiment provides, comprise and there is polygonal shape and laterally zygomorphic blade body, blade body comprises upper surface 1, lower surface 2 and side surface 3, upper surface 1 and lower surface 2 are symmetrical arranged along datum plane m, upper surface 1, lower surface 2 are respectively arranged with eight connecting surfaces, blade is positioned in cutter connecting surface by connecting surface, concrete, by hold-down screw, pass the installation through hole 4 that is arranged on blade geometric center place and fix.Two adjacent side of blade are connected by arc surface 5.The position that upper surface 1 and lower surface 2 are positioned at two adjacent side angles is provided with a cutting unit, on upper surface 1 and lower surface 2, is respectively provided with four cutting units.Described cutting unit comprises: the main cutting edge 12 that is formed on described upper surface 1 or lower surface 2 and arc surface 5 intersection location, be formed on the front cutting edge 13 of described upper surface 1 or lower surface and side surface 3 intersection location, be formed on the chamfered edge plane 6 of described main cutting edge 12 and front cutting edge 13 inner sides, from described chamfered edge plane 6 cave inward form rake face 7, from described rake face 7 cave inward and with the smooth concave face bottom surface 16 being connected of described rake face 7, the chip breaker body being connected with concave face bottom surface 16 and be connected to the convex plane 17 between described installation through hole 4 and chip breaker body, convex plane 17 is parallel with blade mounting plane.
In the present embodiment, as shown in Figure 2, in each cutting unit place, described chip breaker body is provided with multiple boss that are respectively adjacent to front cutting edge 13, and described boss is symmetrical arranged about angular bisector 11.Described boss surface raises gradually and forms the first chip breaker 8, the second chip breaker 9, described the first chip breaker 8 is the first ridge cutting edge of a knife or a sword 10 of two projections at cutting unit place, described two the first ridge cutting edges of a knife or a sword 10 are about angular bisector vertical plane symmetry, described the first ridge cutting edge of a knife or a sword 10 starts gradually to raise from described rake face 7, and with described second chip breaker 9 is smooth is connected, described the second chip breaker 9 is provided with the second ridge cutting edge of a knife or a sword 15 across angular bisector, and described the second ridge cutting edge of a knife or a sword 15 also reduces height and 16 smooth connections of described concave face bottom surface gradually to described front cutting edge 13 is contiguous.The first chip breaker 8, near rake face 7, forms the back structure that a symmetry raises gradually, and is connected with the second chip breaker 9.Rake face 7 has a chamfered edge plane 6 with side surface 3 intersections, and it is the plane at front cutting edge 13 places.
In the present embodiment, as shown in Figure 3, the chip breaker body raising up from concave face bottom surface 16 arranges around through hole 4 is installed, and is symmetrical arranged about angular bisector 11, around through hole 4 is installed, be circumferentially evenly equipped with four location secondary surfaces 14, for fixing, strengthen and installation location.Be positioned at and on angular bisector 11, have a projection 18 for beautifying.The second chip breaker 9 is positioned on chip breaker body, adjacent with position of tool tip, and it is to the distance L of position of tool tip
3for 0.7-1.5mm, the second chip breaker 9 seamlessly transits with rake face 7, has a chip space 19 between the two, and to the direction away from position of tool tip, it is spacious that chip space 19 becomes gradually.The first chip breaker 8 is connected with the second chip breaker 9 in position of tool tip place, is raised on concave face bottom surface 16, and minimum point starts gradually to raise from rake face 7, the distance L between the first chip breaker 8 and front cutting edge 13
4for 0.3-0.6mm, peak is positioned on angular bisector 11.Between rake face 7 and side surface 3, there is a chamfered edge plane 6.By the restriction of parameter L 3 and L4, make the back spatial volume of the first chip breaker 8 and the second chip breaker 9 little, curvature changes high, and iron filings fracture comparatively fast, are adapted to fine finishining cutting needs.
In the present embodiment, as shown in Figure 4, as a preferred embodiment of the present utility model, its cutting edge is Straight Line and Arc sword, with be connected the planar shaped δ that has a certain degree, the best span of δ is 3-5 °, and front cutting edge 13 is that one section of circular arc connects away from point of a knife place, and its circular arc minimum point is to the distance H of point of a knife
1for 0.3-0.4mm.
In the present embodiment, as shown in Figure 5, preferably, described chamfered edge plane 6 width value L
1for 0.05-0.13mm, described chamfered edge plane 6 with the angle of datum plane m is-3-3 °.The optimized angle of the anterior angle β of described rake face 7 is 12-18 °.Concave face bottom surface 16 is to the distance H of point of a knife
2for 1-1.8mm.The first chip breaker 8 is in angular bisector 11 positions, place, and the peak of the first chip breaker 8 is positioned on position of tool tip, first peak of chip breaker 8 and the height difference H of position of tool tip
3for 0.03-0.08mm, the peak of the first chip breaker 8 is to the distance L of position of tool tip
5for 0.8-1.2mm, the second chip breaker 9 is higher than the first chip breaker 8, its height difference H
4for 0.1-0.15mm.
The indexable double-sided cutting insert that the utility model above-described embodiment provides, with respect to prior art, has following beneficial effect:
(1) blade that is arranged so that of Straight Line and Arc sword makes main cutting edge more sharp in the situation that not changing anterior angle, can effectively reduce cutting force suffered in working angles, the edge of a knife is provided with chamfered edge simultaneously, effectively relax the sharp angles that rake face and rear knife face form, strengthened cutting edge strength, be adapted to cutting depth shallow, the fine finishining operating mode that the amount of feeding is little, especially be adapted to the cutting of P class material, can effectively prevent iron filings buildup, thereby improve Surface Machining precision.The cutting force that in working angles, blade itself is subject to is little, has improved the impact resistance of blade, has realized effective combination of intensity and wearability.
(2) rake face, concave face bottom surface and the first chip breaker, the second chip breaker forms chip-breaker and chip space jointly, two chip breaker designs can guarantee effectively chip breaking under different machining parameters condition, the first set chip breaker is near rake face, it is the back structure that a symmetry raises gradually, and be connected with the second chip breaker, this back formula structure gradually raising can effectively guide cutting to flow to, the iron filings of different-thickness all can flow according to the direction of setting, fractureing with regard to after curling through the first chip breaking of thinner thickness, after running into the second chip breaker after the thicker chip curling of thickness, fracture, and back spatial volume is little, curvature changes high, iron filings fracture comparatively fast, be not easy to produce built-up edge, when fine finishining to can greatly improving surface quality.By such structural design, can effectively control chip-flowing, chip removal smoothly, reduces blade abrasion, guarantee chip breaking effect, avoid sticky cutter phenomenon, effectively prevent that built-up edge and chip breaking are wound around, improve the cutting ability of blade, improve the surface accuracy of institute's processing parts simultaneously.
(3) beautify the external form of blade, optimized the overall structure of blade.
It is laterally zygomorphic square structure for the indexable double-sided cutting insert that the utility model above-described embodiment provides, and certainly, in other embodiments, can be also equilateral triangle structure, diamond structure.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. an indexable double-sided cutting insert, comprise and there is polygonal shape and laterally zygomorphic blade body, described blade body comprises upper surface, lower surface and side surface, described blade body geometric center place is provided with installation through hole, described two adjacent side are connected by arc surface, and the angle in described two adjacent side is provided with cutting unit, it is characterized in that, described cutting unit comprises the main cutting edge that is formed on described upper surface or lower surface and arc surface intersection location, be formed on the front cutting edge of described upper surface or lower surface and side surface intersection location, be formed on the chamfered edge plane of described main cutting edge and front cutting edge inner side, from described chamfered edge plane cave inward form rake face, from described rake face cave inward and with the smooth concave face bottom surface being connected of described rake face and the chip breaker body that is connected with concave face bottom surface, described rake face and concave face bottom surface, chip breaker body is connected as a single entity, wherein,
In each cutting unit place, described chip breaker body is provided with multiple boss that are respectively adjacent to main cutting edge, described boss is symmetrical arranged about angular bisector, described boss surface raises gradually and forms the first chip breaker, the second chip breaker, described the first chip breaker is the first ridge cutting edge of a knife or a sword of two projections at cutting unit place, described two the first ridge cutting edges of a knife or a sword are about angular bisector vertical plane symmetry, described the first ridge cutting edge of a knife or a sword starts gradually to raise from described rake face, and with described smooth being connected of the second chip breaker, described the second chip breaker is provided with the second ridge cutting edge of a knife or a sword across angular bisector, described the second ridge cutting edge of a knife or a sword also reduces height and smooth connection of described concave face bottom surface gradually to described main cutting edge is contiguous.
2. indexable double-sided cutting insert according to claim 1, is characterized in that, described chip breaker body raises up from described concave face bottom surface and around through hole setting is installed, and is symmetrical arranged about angular bisector.
3. indexable double-sided cutting insert according to claim 1, is characterized in that, described cutting edge is Straight Line and Arc sword.
4. indexable double-sided cutting insert according to claim 3, it is characterized in that, described main cutting edge is 3-5 ° with the angle span that is connected plane, the peak of described main cutting edge is at position of tool tip place, away from position of tool tip place height, reduce gradually, described main cutting edge is that one section of circular arc connects away from point of a knife place, and its circular arc minimum point is 0.3-0.4mm to the distance of point of a knife.
5. indexable double-sided cutting insert according to claim 1, it is characterized in that, described blade body is symmetrical arranged take by-level as datum plane, and the angle of described chamfered edge plane and datum plane is-3-3 ° that described chamfered edge plane width is 0.05-0.13mm.
6. indexable double-sided cutting insert according to claim 1, is characterized in that, the anterior angle of described rake face is 12-18 °.
7. indexable double-sided cutting insert according to claim 1, is characterized in that, around described installation through hole, is circumferentially evenly equipped with four location secondary surfaces.
8. indexable double-sided cutting insert according to claim 1, it is characterized in that, described the first chip breaker is connected with described the second chip breaker in position of tool tip place, described the first chip breaker is raised on described concave face bottom surface, its minimum point starts gradually to raise from described rake face, distance between itself and cutting edge is 0.3-0.6mm, and its peak is positioned on angular bisector.
9. indexable double-sided cutting insert according to claim 1, it is characterized in that, described the second chip breaker is positioned on chip breaker body, adjacent with position of tool tip, its distance to position of tool tip is 0.7-1.5mm, and described the second chip breaker and rake face seamlessly transit, and has a chip space between the two, and to the direction away from position of tool tip, it is spacious that chip space becomes gradually.
10. indexable double-sided cutting insert according to claim 1, it is characterized in that, described concave face bottom surface is 1-1.8mm to the distance of point of a knife, the peak of described the first chip breaker is positioned on position of tool tip, the peak of described the first chip breaker and the difference in height of position of tool tip are 0.03-0.08mm, the peak of described the first chip breaker to the distance of position of tool tip is 0.8-1.2mm, and described the second chip breaker is higher than the first chip breaker, and its difference in height is 0.1-0.15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681736.0U CN203541585U (en) | 2013-11-01 | 2013-11-01 | Rotatable double-faced cutting blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681736.0U CN203541585U (en) | 2013-11-01 | 2013-11-01 | Rotatable double-faced cutting blade |
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| CN203541585U true CN203541585U (en) | 2014-04-16 |
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| CN201320681736.0U Expired - Lifetime CN203541585U (en) | 2013-11-01 | 2013-11-01 | Rotatable double-faced cutting blade |
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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 |
| CN104708039A (en) * | 2015-03-20 | 2015-06-17 | 上海鹤工进出口有限公司 | Novel blade and manufacturing method thereof |
| CN104858460A (en) * | 2015-05-06 | 2015-08-26 | 株洲钻石切削刀具股份有限公司 | Rotary turning blade |
| CN107598200A (en) * | 2017-10-13 | 2018-01-19 | 株洲欧科亿数控精密刀具股份有限公司 | A kind of steel class turning insert |
| CN112041105A (en) * | 2018-04-26 | 2020-12-04 | 山特维克科洛曼特公司 | Turning insert |
| CN112475340A (en) * | 2020-12-07 | 2021-03-12 | 哈尔滨理工大学 | High-efficient chip breaking antifriction two-sided rhombus lathe tool piece under high pressure cooling |
| JP2022030438A (en) * | 2020-08-07 | 2022-02-18 | 京セラ株式会社 | Cutting insert, cutting tool and cut product manufacturing method |
-
2013
- 2013-11-01 CN CN201320681736.0U patent/CN203541585U/en not_active Expired - Lifetime
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 |
| CN104708039A (en) * | 2015-03-20 | 2015-06-17 | 上海鹤工进出口有限公司 | Novel blade and manufacturing method thereof |
| CN104858460A (en) * | 2015-05-06 | 2015-08-26 | 株洲钻石切削刀具股份有限公司 | Rotary turning blade |
| CN104858460B (en) * | 2015-05-06 | 2017-08-04 | 株洲钻石切削刀具股份有限公司 | A kind of index lathe paring blade |
| CN107598200A (en) * | 2017-10-13 | 2018-01-19 | 株洲欧科亿数控精密刀具股份有限公司 | A kind of steel class turning insert |
| CN112041105A (en) * | 2018-04-26 | 2020-12-04 | 山特维克科洛曼特公司 | Turning insert |
| CN112041105B (en) * | 2018-04-26 | 2023-11-28 | 山特维克科洛曼特公司 | Turning insert |
| JP2022030438A (en) * | 2020-08-07 | 2022-02-18 | 京セラ株式会社 | Cutting insert, cutting tool and cut product manufacturing method |
| JP7417494B2 (en) | 2020-08-07 | 2024-01-18 | 京セラ株式会社 | Manufacturing method for cutting inserts, cutting tools, and cut products |
| CN112475340A (en) * | 2020-12-07 | 2021-03-12 | 哈尔滨理工大学 | High-efficient chip breaking antifriction two-sided rhombus lathe tool piece under high pressure cooling |
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Address after: Dong Jia Duan high-tech park in Hunan province 412008 Zhuzhou city Lusong District venture four Road No. eight Patentee after: ZHUZHOU OKE CNC PRECISION TOOL 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: OKE CARBIDE CO.,LTD. |
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| CP03 | Change of name, title or address |
Address after: 412500, Hunan County, Zhuzhou province Yanling County entrepreneurship Park entrepreneurial road Patentee after: OKE 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 CNC PRECISION TOOL Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
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Granted publication date: 20140416 |
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| CX01 | Expiry of patent term |