CN110548883B - Split type handle of a knife - Google Patents
Split type handle of a knife Download PDFInfo
- Publication number
- CN110548883B CN110548883B CN201910679876.6A CN201910679876A CN110548883B CN 110548883 B CN110548883 B CN 110548883B CN 201910679876 A CN201910679876 A CN 201910679876A CN 110548883 B CN110548883 B CN 110548883B
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- Prior art keywords
- main body
- screw
- connecting rod
- handle
- knife
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- 238000005299 abrasion Methods 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
Abstract
A split handle, comprising: a shank main body having a first end surface formed at one side of the shank main body, and a conical hole formed inwardly from the first end surface along an axis of the shank main body; the connecting rod is provided with a second end face formed on one side of the connecting rod and a truncated cone formed outwards from the second end face along the axis of the connecting rod; the connecting piece is used for connecting and fixing the cutter handle main body and the connecting rod after being spliced and assembled; after the cutter handle main body and the connecting rod are assembled in a plugging mode, the cone frustum is matched into the cone hole, and the first end face and the second end face are tightly abutted. When in tensioning, the tool handle has the state that the conical surface and the end surface are in positioning fit, so that the problems of abrasion, eccentricity and the like possibly occurring in long-term use are effectively avoided, the tool handle precision is affected, the stability is high, the strength is high, the disassembly and assembly are convenient, and the practicability is high.
Description
Technical Field
The invention relates to the technical field of cutters, in particular to a split type high-precision cutter handle with a conical surface and an end surface in positioning fit.
Background
The cutter is a common cutting tool in machining and has the characteristics of high temperature resistance, wear resistance, high strength and the like. In practical application, the tool is generally required to be detachably assembled on the tool handle for use. The tool shank generally includes a front tool holding portion and a rear mounting portion. The existing knife handle structure is formed by integrating the front end and the rear end, and has the advantages that the knife handle is strong in structural stability, but because the knife handle is made of alloy steel, the price is very expensive, if the knife handle is specially customized for different knives, the preparation cost of the knife handle is greatly increased, the control of the cost is not facilitated for downstream application manufacturers, and especially, when the front end clamping part is required to be replaced according to different knives, the knife handle can only be replaced together with the knife handle; meanwhile, when the clamping part at the front end of the cutter handle is damaged and needs to be replaced, the cutter handle can only be replaced together with the whole cutter handle. This approach is not conducive to lean production management. Therefore, the structure of the cutter handle is required to be improved, the replacement cost is reduced, the replacement efficiency is improved, and the cutter handle has stable and reliable structural characteristics.
Disclosure of Invention
The split type knife handle provided by the invention is used for solving the defects in the prior art, the knife handle main body and the connecting rod are assembled through the connecting piece, and are in a state that the conical surface and the end surface are in positioning fit after being assembled and connected, so that the problems of abrasion, eccentricity and the like possibly occurring in long-term use after the assembly of the knife handle main body and the connecting rod are effectively avoided from influencing the precision and the service life of the knife handle, and the split type knife handle has the advantages of stronger stability and strength, convenience in disassembly and assembly and strong practicability.
In order to achieve the above object, the following technical means are adopted:
a split handle of a knife, comprising:
a shank main body having a first end surface formed at one side of the shank main body, and a conical hole formed inwardly from the first end surface along an axis of the shank main body;
the connecting rod is provided with a second end face formed on one side of the connecting rod and a truncated cone formed outwards from the second end face along the axis of the connecting rod;
the connecting piece is used for connecting and fixing the cutter handle main body and the connecting rod after being spliced and assembled;
after the cutter handle main body and the connecting rod are assembled in a plugging mode, the cone frustum is matched into the cone hole, and the first end face and the second end face are tightly abutted.
Further, the depth of the conical hole is greater than or equal to the length of the conical surface of the truncated cone.
Further, the connecting piece is tightened or pressed to complete connection fixation by tightening or compressing the cutter handle main body and the connecting rod along the axial direction.
Further, the connecting piece comprises a first screw, the top end of the first screw is limited in the main body of the cutter handle, and the lower part of the first screw extends out of the main body of the cutter handle from one end of the conical hole and is in threaded fit with the threaded hole of the connecting rod.
Further, a second screw with the opposite screw direction to the first screw is arranged in the cutter handle main body.
Further, after the cutter handle main body and the extension rod are completely tensioned and assembled, a gap exists between the top surface of the first screw and the bottom surface of the second screw.
Further, the second screw is a hollow screw, and the outer side surface is matched with the threads of the tool handle body.
Further, the first screw and the second screw are both positioned on the central axis of the cutter handle. The first end face and the second end face are parallel and perpendicular to the central axis.
Further, a receiving hole is formed in the other side of the cutter handle main body, and a cutter mounting cavity is formed in the other side of the connecting rod.
Further, the bearing hole, the mounting cavity of the second screw and the limiting cavity of the first screw are sequentially communicated.
Further, the middle part of the cone frustum is provided with a counter bore, and the threaded hole is positioned at the bottom of the counter bore.
The invention has the beneficial effects that:
1. the tool handle is designed into the split type tool handle main body and the extension rod, so that the practicability of the tool handle is greatly improved, the extension rod can be conveniently disassembled and assembled, and for a downstream application scene, the tool is convenient to replace and select, the number of the required tool handles is reduced, and the cost is reduced;
2. in the scheme, the conical frustum is matched with the conical hole, the first end face is matched with the second end face, so that the conical face and the end face are in an oversubscribed matching state, the split-type assembled tool handle is strong in stability and strength, the use precision of the tool handle and the tool is improved, and the service life is prolonged. Specific:
2.1, when the cutter handle main body and the connecting rod are respectively processed, the processing precision of the end face is easy to control under the existing process conditions, and the processing precision of the conical surface is not easy to control and the processing difficulty is high, so that the requirements on the production processing technology and the processing equipment can be reduced by adopting the structures of the conical surface and the end face, only the vertical relation between the end face and the axis of the cutter handle main body/the connecting rod is realized and ensured, the conical surface is processed in a conventional mode, the excessive pursuit of high precision which is not easy to realize in the conical surface processing is not needed, and the assembly precision and the service life are not influenced;
2.2, when the cutter handle main body and the connecting rod are assembled, the conical surface and the end face are in an overstock matching state, even if the central axis of the conical surface is not coincident with the axis of the cutter handle main body/the connecting rod and errors exist under the existing process conditions, the mismatch or the angle mismatch can be corrected to the central axis through the tight interference fit between the end faces, so that the two conical surfaces are concentric and coincide with the axis of the cutter handle main body/the connecting rod, and the instability and the shaking possibility existing in the conical surface matching contact only are solved;
2.3, when the device is used after assembly, due to good connection strength and the oversubstance matching state of the conical surface and the end surface, the problems of eccentric extension rod and the like caused by large end matching or small end matching of the conical surface and abrasion of the conical surface possibly occurring in long-term use after assembly of the device are effectively avoided, the use precision is affected, and even if the device is used, the possible conical surface abrasion occurs, the continuous matching of the end surface exists, so that the precision is guaranteed and the service life is prolonged;
3. the connecting piece is arranged on the central axis, so that the design space of the cutter handle is effectively utilized, the top end of the first screw is limited through the main body, the connecting rod is in threaded fit with the lower part of the first screw, and tensioning assembly of the connecting rod is effectively realized by screwing the first screw;
4. the second screw with opposite screw directions is arranged on the basis of the first screw, and in a tensioning state, the second screw and the first screw are provided with gaps, so that on one hand, the first screw can have a loosening and retreating distance/space during disassembly, meanwhile, the top end of the first screw can be effectively limited from the other direction, the first screw can be conveniently withdrawn from the other end in the continuous loosening process, the disassembly is completed, on the other hand, the second screw is prevented from being driven during screwing, meanwhile, in order to avoid interference after assembly, the second screw adopts a hollow structure, the first screw is conveniently screwed through a hollow part, the integral structure of the tool handle is further effectively optimized, and the tool handle is more reasonable and reliable;
5. by arranging the counter bore, space can be provided for deformation of the cone frustum in the axial direction, which is possibly generated by the cone frustum, after the cone frustum is tightly matched with the cone hole; on the other hand, the weight of the whole connecting rod and the cutter handle can be reduced, the expensive alloy steel material required by the connecting rod is reduced, the processing of the connecting rod is convenient, and the threaded hole is conveniently formed.
Drawings
Fig. 1 is a cross-sectional view of a first embodiment of the present invention.
Fig. 2 is a cross-sectional view of a second embodiment of the present invention.
Fig. 3 is a cross-sectional view of a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but embodiments of the present invention are not limited thereto.
As shown in fig. 1, is an embodiment of the present invention. A split type knife handle comprises a knife handle main body 1 and a connecting rod 2 which are mutually independent.
The tool handle main body 1 and the connecting rod 2 are detachably assembled through connecting pieces arranged on the tool handle. Through designing the handle of a knife into split type handle of a knife main part 1 and connect pole 2 two parts, greatly improved the practicality of handle of a knife, the dismouting that connects pole 2 that can be convenient carries out, to the change and the selection of cutter of being convenient for of low reaches application scenario to reduce required handle of a knife quantity, thereby reduce cost.
The scheme of the invention is suitable for the structure of the cutter handle, in particular to a thermal expansion type/thermal loading type cutter handle.
Specifically, the shank body 1 shown in FIG. 1 is of the 7:24 type.
The split type handle of a knife of this embodiment includes:
a shank main body 1 having a first end face 12 formed on one side of the shank main body 1, and a conical hole 11 formed inward from the first end face 12 along the axis of the shank main body 1;
a connecting rod 2 having a second end surface 22 formed at one side of the connecting rod 2, and a truncated cone 21 formed outwardly from the second end surface 22 along the axis of the connecting rod 2;
the connecting piece is used for connecting and fixing the assembled cutter handle body 1 and the connecting rod 2;
when the tool handle body 1 and the connecting rod 2 are assembled in a plugging manner, the conical frustum 21 is matched into the conical hole 11, and the first end face 12 and the second end face 22 are tightly abutted.
The specific implementation manner may be that, for example, one end of the tool shank body 1 is provided with a conical hole 11, and the other end is provided with a receiving hole 10. The top surface of the side wall of the conical hole 11 is provided with a first end surface 12 perpendicular to the central axis of the cutter handle; one end of the connecting rod 2 is provided with a conical frustum 21 matched with the conical hole 11, and the other end of the connecting rod 2 is provided with a cutter mounting cavity 20. The conical frustum 21 is provided with a second end surface 22 on the bottom periphery thereof, which is engaged with the first end surface 12. The depth of the conical bore 11 is greater than the distance from the top surface of the truncated cone 21 to the second end surface 22.
The connecting piece is used for tensioning and assembling the tool handle main body 1 and the connecting rod 2, specifically, the conical frustum 21 is matched with the conical hole 11, the first end face 12 is matched with the second end face 22, the conical surface and the end faces are in an oversubstance matching state, the problems that the connecting rod 2 is eccentric and the like due to abrasion of the conical surface possibly occurring in long-term use after the tool handle main body and the end faces are assembled are effectively avoided, the precision problem of tool use cannot be influenced, and the tool handle of the split type assembly is enabled to be strong in stability and high in strength as a whole.
As an embodiment of the connecting member, it includes a first screw 31 having a top end limited in the shank body 1 and a bottom end extending from one end of the conical hole 11 out of the shank body 1 and threadedly engaged with the threaded hole 23 of the extension rod 2. Specifically, the rod body of the first screw 31 may be a rod body having a threaded portion at the bottom end thereof, which is engaged with the threaded hole 23, or may be a rod body with threads at all, or may be a rod body with threads at the bottom and top.
During assembly, the first screw 31 is inserted from the receiving hole 10, and the bottom end of the first screw 31 extends out of the tool shank main body 1 from one end of the conical hole 11 until the top end of the first screw 31 is limited by the tool shank main body 1, so that the connecting rod 2 is in a state to be assembled. Then, installing the extension rod 2 from the other end, enabling the threaded hole 23 of the extension rod 2 to be matched with the threaded part of the first screw 31, screwing the extension rod 2 by hand until the two end faces are completely matched with each other until the hand cannot continue screwing, or gaps cannot be observed by naked eyes, or the gaps are small, screwing the first screw 31, further tightening the extension rod 2 towards the tool handle main body 1 until the cone frustum 21 is matched with the conical surface of the cone hole 11, tightly attaching the first end face 12 to the second end face 22, and completing the assembly; the first screw 31 can also be screwed directly during the assembly of the extension rod 2 until a completely connected and fixed assembly state is reached.
As a preferred embodiment of the connecting member, a second screw 32 opposite to the first screw 31 in the screw direction is further provided in the shank main body 1. The second screw 32 is arranged on one side of the top end of the first screw 31, and after the tool shank main body 1 and the extension rod 2 are completely tensioned and assembled, a gap exists between the top surface of the first screw 31 and the bottom surface of the second screw 32, for example, the gap can be designed to be 0.5-4 mm, and the first screw 31 is mainly provided with a space for unscrewing and backing a certain distance, so that the screwing and backing of the extension rod 2 are facilitated.
Specifically, the first screw 31 and the second screw 32 are both located on the central axis of the tool handle.
Specifically, the second screw 32 is a hollow screw, and the outer side surface is engaged with the thread of the tool shank body 1. In particular, it may be a screw/bolt with external threads and internal hexagonal through holes. Hollow holes for facilitating screwing of the first screw 31.
Specifically, the receiving hole 10, the mounting cavity of the second screw 32, and the limiting cavity of the first screw 31 are sequentially communicated.
During assembly, the first screw 31 and the second screw 32 are sequentially inserted from the cutter handle mounting cavity 20, the second screw 32 is screwed, the second screw 32 is mounted in place, after the second screw 32 is mounted in place, the first screw 31 is screwed through the hollow hole of the second screw 32, the connecting rod 2 is tensioned towards the cutter handle main body 1 by adopting the mode described above until the conical frustum 21 is matched with the conical surface of the conical hole 11, the first end surface 12 is tightly attached to the second end surface 22, positioning matching is formed, and assembly is completed. At this time, a gap exists between the top surface of the first screw 31 and the bottom surface of the second screw 32. When the connecting rod 2 is required to be disassembled or loosened, the first screw 31 is firstly unscrewed, and the second screw is prevented from being driven during screwing due to the opposite screw directions of the first screw 31 and the second screw 32, so that the top surface of the first screw 31 is contacted with the bottom surface of the second screw 32 after the first screw 31 is unscrewed; at this time, the first screw 31 is continuously unscrewed, and the extension rod 2 is driven to withdraw from the other end due to the supporting limit of the second screw 32, so that the disassembly is completed.
As a specific embodiment of the connecting rod 2, a counter bore 24 is arranged in the middle of the truncated cone 21, and the threaded hole 23 is positioned at the bottom of the counter bore 24. Through the setting of counter bore 24, on the one hand can be for the circular cone bench 21 behind closely cooperating with the circular cone hole 11, the circular cone bench 21 can produce the deformation to the axis direction and provide the space, on the other hand can alleviate and connect pole 2 and the holistic weight of handle of a knife to reduce required expensive alloy steel material, conveniently carry out the processing of connecting pole 2 moreover, do benefit to the seting up of screw hole 23 simultaneously.
As shown in fig. 2, another embodiment of the present invention is shown. The split type knife handle comprises a knife handle main body 1 and a connecting rod 2 which are mutually independent, wherein a knife handle receiving hole 10 is formed in the other end of the knife handle main body 1, and a knife tool mounting cavity 20 is formed in the other end of the connecting rod 2.
Specifically, the shank body 1 shown in fig. 2 is of the HSK type.
As shown in fig. 3, is yet another embodiment of the present invention. The split type knife handle comprises a knife handle main body 1 and a connecting rod 2 which are mutually independent, wherein a knife handle receiving hole 10 is formed in the other end of the knife handle main body 1, and a knife tool mounting cavity 20 is formed in the other end of the connecting rod 2.
Specifically, the holder body 1 shown in fig. 3 is a straight shank.
The tool shank body 1 according to the inventive concept may be of a type other than the above-listed embodiments, and will not be described in detail here.
According to the invention, the tool handle is designed into the split type tool handle main body 1 and the extension rod 2 which can be conveniently assembled/disassembled, so that the practicability of the tool handle is greatly improved, the extension rod 2 can be conveniently disassembled, and for a downstream application scene, the tool is convenient to replace and select, the number of the required tool handles is reduced, and the cost is reduced.
According to the invention, the cutter handle main body 1 and the extension rod 2 are assembled through the connecting piece and are in a state that the conical surface and the end surface are in positioning fit after being connected and fixed, so that the problems of abrasion, eccentricity and the like possibly occurring in long-term use after the cutter handle main body and the extension rod are assembled are effectively avoided from influencing cutter handle precision, and the cutter handle has the advantages of stronger stability and strength, convenience in disassembly and assembly and strong practicability.
Claims (5)
1. A split handle of a knife, comprising:
a shank main body (1) having a first end surface (12) formed on one side of the shank main body (1), and a conical hole (11) formed inward from the first end surface (12) along the axis of the shank main body (1);
a connecting rod (2) which is provided with a second end surface (22) formed at one side of the connecting rod (2), and a truncated cone (21) which is outwards formed from the second end surface (22) along the axis of the connecting rod (2);
the connecting piece is used for connecting and fixing the assembled cutter handle main body (1) and the connecting rod (2), and the cutter handle main body (1) and the connecting rod (2) are tensioned or pressed along the axial direction to finish the connecting and fixing; the connecting piece comprises a first screw (31) with the top end limited in the tool shank main body (1) and the lower part extending out of the tool shank main body (1) from one end of the conical hole (11) and being in threaded fit with the threaded hole (23) of the connecting rod (2);
after the cutter handle main body (1) and the connecting rod (2) are assembled in a plugging mode, the cone frustum (21) is matched into the cone hole (11), and the first end face (12) and the second end face (22) are tightly abutted;
a second screw (32) with the opposite screw direction to the first screw (31) is also arranged in the tool handle main body (1);
after the cutter handle main body (1) and the connecting rod (2) are completely tensioned and assembled, a gap exists between the top surface of the first screw (31) and the bottom surface of the second screw (32);
the middle part of the cone frustum (21) is provided with a counter bore (24), and the threaded hole (23) is positioned at the bottom of the counter bore (24).
2. The split knife handle according to claim 1, wherein the depth of the conical hole (11) is equal to or greater than the conical length of the truncated cone (21).
3. The split handle according to claim 1, characterized in that the second screw (32) is a hollow screw, the outer side surface of which cooperates with the thread of the handle body (1).
4. The split tool shank according to claim 1, wherein the first screw (31) and the second screw (32) are both located on a tool shank central axis.
5. The split type knife handle according to claim 1, wherein the other side of the knife handle main body (1) is provided with a receiving hole (10), and the other side of the connecting rod (2) is provided with a knife mounting cavity (20).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019204784745 | 2019-04-10 | ||
| CN201920478474 | 2019-04-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110548883A CN110548883A (en) | 2019-12-10 |
| CN110548883B true CN110548883B (en) | 2024-04-02 |
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ID=68735927
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921186317.3U Active CN210587225U (en) | 2019-04-10 | 2019-07-26 | Split type handle of a knife |
| CN201910679876.6A Active CN110548883B (en) | 2019-04-10 | 2019-07-26 | Split type handle of a knife |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921186317.3U Active CN210587225U (en) | 2019-04-10 | 2019-07-26 | Split type handle of a knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN210587225U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210587225U (en) * | 2019-04-10 | 2020-05-22 | 成都成林数控刀具有限公司 | Split type handle of a knife |
| CN112475488A (en) * | 2020-11-23 | 2021-03-12 | 四川共享铸造有限公司 | Thread machining device |
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| JP2001150221A (en) * | 1999-09-07 | 2001-06-05 | Nikken Kosakusho Works Ltd | End mill chucking structure |
| US6352395B1 (en) * | 1999-03-19 | 2002-03-05 | Nikken Kosakusho Works Ltd. | Tool holder and tool holder attachment mechanism |
| CN201102098Y (en) * | 2007-09-30 | 2008-08-20 | 东方电气集团东方汽轮机有限公司 | Replaceable rotor wheel slot cutter |
| CN202367507U (en) * | 2011-12-29 | 2012-08-08 | 重庆机床(集团)有限责任公司 | High-rigidity connecting structure of spindle and knife handle |
| DE102012209312A1 (en) * | 2012-06-01 | 2013-12-05 | Gühring Ohg | Modular tool holder |
| CN204019226U (en) * | 2014-08-20 | 2014-12-17 | 中国第一汽车股份有限公司 | HSK handle of a knife joint universal converting device |
| CN109226797A (en) * | 2018-08-22 | 2019-01-18 | 深圳信息职业技术学院 | A kind of novel combination type knife bar |
| CN210587225U (en) * | 2019-04-10 | 2020-05-22 | 成都成林数控刀具有限公司 | Split type handle of a knife |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7338420B2 (en) * | 2005-05-04 | 2008-03-04 | Takeo Imahata | Versatile toolholder for numerically controlled machine tool for holding tool through collet |
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2019
- 2019-07-26 CN CN201921186317.3U patent/CN210587225U/en active Active
- 2019-07-26 CN CN201910679876.6A patent/CN110548883B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH583084A5 (en) * | 1974-09-18 | 1976-12-31 | Koch Benno | |
| US6352395B1 (en) * | 1999-03-19 | 2002-03-05 | Nikken Kosakusho Works Ltd. | Tool holder and tool holder attachment mechanism |
| JP2000308941A (en) * | 1999-04-26 | 2000-11-07 | Honda Motor Co Ltd | Toolholder structure and tool holding device |
| JP2001150221A (en) * | 1999-09-07 | 2001-06-05 | Nikken Kosakusho Works Ltd | End mill chucking structure |
| CN201102098Y (en) * | 2007-09-30 | 2008-08-20 | 东方电气集团东方汽轮机有限公司 | Replaceable rotor wheel slot cutter |
| CN202367507U (en) * | 2011-12-29 | 2012-08-08 | 重庆机床(集团)有限责任公司 | High-rigidity connecting structure of spindle and knife handle |
| DE102012209312A1 (en) * | 2012-06-01 | 2013-12-05 | Gühring Ohg | Modular tool holder |
| CN204019226U (en) * | 2014-08-20 | 2014-12-17 | 中国第一汽车股份有限公司 | HSK handle of a knife joint universal converting device |
| CN109226797A (en) * | 2018-08-22 | 2019-01-18 | 深圳信息职业技术学院 | A kind of novel combination type knife bar |
| CN210587225U (en) * | 2019-04-10 | 2020-05-22 | 成都成林数控刀具有限公司 | Split type handle of a knife |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110548883A (en) | 2019-12-10 |
| CN210587225U (en) | 2020-05-22 |
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| CB02 | Change of applicant information |
Address after: 611130 No.7, Rongtai Avenue, Chengdu cross strait science and Technology Industrial Development Park, Wenjiang District, Chengdu City, Sichuan Province Applicant after: Chengdu Chenglin CNC Tool Co.,Ltd. Address before: 611130 No.7, Rongtai Avenue, Chengdu cross strait science and Technology Industrial Development Park, Wenjiang District, Chengdu City, Sichuan Province Applicant before: CHENGDU CHENGLIN NUMERICAL CONTROL CUTTING TOOLS CO.,LTD. |
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| GR01 | Patent grant |