CN114260495A - Indexable cutting tool with cooling flow channel - Google Patents
Indexable cutting tool with cooling flow channel Download PDFInfo
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- CN114260495A CN114260495A CN202111534580.9A CN202111534580A CN114260495A CN 114260495 A CN114260495 A CN 114260495A CN 202111534580 A CN202111534580 A CN 202111534580A CN 114260495 A CN114260495 A CN 114260495A
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- cooling flow
- flow channel
- cooling
- blade
- outlet end
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- 238000001816 cooling Methods 0.000 title claims abstract description 183
- 238000005520 cutting process Methods 0.000 title claims abstract description 35
- 239000000112 cooling gas Substances 0.000 claims abstract description 8
- 239000000110 cooling liquid Substances 0.000 claims abstract description 8
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000002173 cutting fluid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Cutting Tools, Boring Holders, And Turrets (AREA)
- Drilling Tools (AREA)
Abstract
The invention discloses an indexable cutting tool with a cooling runner, which comprises a tool body and a plurality of blades; each mounting groove of the cutter body is fixedly connected with a blade correspondingly; in the cutter body, a first cooling flow channel is respectively arranged corresponding to each mounting groove, and the outlet end of each first cooling flow channel is communicated to the corresponding mounting groove and is positioned at the position contacted with the corresponding blade; the blade is provided with a second cooling flow channel corresponding to each blade tip, the inlet end of the second cooling flow channel is communicated with the blade and is arranged at the position contacted with the cutter body so as to be in butt joint with the outlet end of the first cooling flow channel of the cutter body, and the outlet end of the second cooling flow channel is communicated with the blade and is arranged at the position close to the corresponding blade tip. The invention can improve the flow velocity of cooling liquid/gas and enhance the cooling and chip removal effects of the cooling flow channel; in addition, the outlet of the cooling flow channel is close to the cutter point, so that the cooling flow channel can act on the cutting chips and the cutter point more accurately, and the cooling effect is improved.
Description
Technical Field
The invention relates to the technical field of cutter design and manufacture, in particular to an indexable cutting tool with a cooling flow channel.
Background
Cutting tools are tools used in machining for cutting operations. With the transformation and upgrade of manufacturing industry, the cutting technology is continuously developed, and the processing requirements of high speed, high precision and high economy are increasingly highlighted. During cutting, the cutting fluid has good cooling effect, can absorb part of heat generated in the cutting process, and if the cutting fluid cannot be properly sprayed to a cutting area, the cutting fluid can cause quick heating and quenching of a cutter to generate thermal shock, so that the cutter can fail in advance. As shown in fig. 1, an indexable cutting tool of the prior art, which includes a tool body 100 and an insert 200, wherein the tool body 100 is rotatable along a rotation axis S, a plurality of mounting grooves 101 are formed in the tool body 100, one insert 200 is mounted in each mounting groove 101, and the insert 200 is usually fixed in the mounting groove 101 of the tool body 100 by a screw 300, and a cooling flow passage 400 is formed in the tool body 100, and the cooling flow passage 400 is directed toward the insert 200 through the mounting groove 101, and due to process limitations, an axis S1 of the cooling flow passage 400 is only a straight line, and a curved flow passage cannot be manufactured; the axis S1 is directed from the front of the insert 200 to the cutting edge of the insert 200, and the flow velocity direction of the coolant/gas is as shown by Vq in fig. 1, and since the outlet of the cooling flow passage 400 is far from the cutting edge of the insert 200, if the tool rotates along with the machine tool spindle, the coolant jetted from the cooling flow passage 400 cannot accurately act on the cutting edge due to the centrifugal force, and the cooling effect of the cutting edge of the insert 200 is affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an indexable cutting tool with a cooling flow channel, which can improve the flow velocity of cooling liquid/gas and enhance the cooling and chip removal effects of the cooling flow channel through structural improvement; on the other hand, the outlet of the cooling flow channel is close to the cutter point, so that the cooling flow channel can act on the cutting chips and the cutter point more accurately, and the cooling effect is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: an indexable cutting tool with a cooling channel comprises a tool body and a plurality of blades; the cutter body is provided with a plurality of mounting grooves along the rotation direction of the rotation axis, and each mounting groove is fixedly connected with a blade correspondingly; a first cooling flow channel is arranged in the cutter body corresponding to each mounting groove, the inlet end of each first cooling flow channel is communicated with the flow inlet channel of the cutter body, and the outlet end of each first cooling flow channel is communicated to the corresponding mounting groove and is positioned at a position where the corresponding blade is contacted; the blade is of an indexable structure, a second cooling flow channel is arranged in the blade corresponding to each tool nose, the inlet end of the second cooling flow channel is communicated with the blade and is arranged at a position contacted with the tool body so as to be in butt joint with the outlet end of the first cooling flow channel of the tool body, and the outlet end of the second cooling flow channel is communicated with the blade and is arranged at a position close to the corresponding tool nose.
The axis of the first cooling flow channel at least comprises a section of curve; the area of the inlet end of the first cooling flow passage is larger than the area of the outlet end of the first cooling flow passage.
The cross-sectional area of the first cooling flow channel is gradually reduced from the inlet end of the first cooling flow channel to the outlet end of the first cooling flow channel.
The axis of the second cooling flow channel at least comprises a section of curve; the area of the inlet end of the second cooling flow passage is larger than the area of the outlet end of the second cooling flow passage.
The cross-sectional area of the second cooling flow channel is gradually reduced from the inlet end of the second cooling flow channel to the outlet end of the second cooling flow channel.
The area size and the shape of the outlet end of the first cooling flow channel are matched with the area size and the shape of the inlet end of the second cooling flow channel.
The blade comprises a front blade face, a rear blade face and a bottom face, the inlet end of the second cooling flow passage is arranged at the bottom face of the blade, and the outlet end of the second cooling flow passage is arranged at the front blade face; the bottom surface of the blade is in contact with the bottom of the mounting groove of the cutter body, and the outlet end of the first cooling flow channel is arranged at the bottom of the mounting groove of the cutter body.
The first cooling flow channel comprises a first section and a second section, the axis of the first section is a straight line, the axis of the second section is a curve, the first section is connected with the inlet end of the first cooling flow channel, and the second section is connected with the outlet end of the first cooling flow channel.
The second cooling flow passage comprises a first cavity connected with the inlet end of the second cooling flow passage, a second cavity with a curved axis and a third cavity connected with the outlet end of the second cooling flow passage, wherein the third cavity is in a slit structure; wherein, the included angle between the flow speed direction of the cooling liquid/gas of the slit structure and the rotating shaft of the cutter body is alpha, and the value of alpha is more than 0 degree and less than 90 degrees.
The cross sections of the first cooling flow channel and the second cooling flow channel are circular, rectangular or polygonal.
Compared with the prior art, the invention has the beneficial effects that:
in the cutter body, a first cooling flow channel is arranged corresponding to each mounting groove, the inlet end of each first cooling flow channel is communicated with the flow inlet channel of the cutter body, and the outlet end of each first cooling flow channel is communicated with the corresponding mounting groove and is positioned at a position where the outlet end of each first cooling flow channel is contacted with the corresponding blade; the blade is of an indexable structure, a second cooling flow channel is arranged in the blade corresponding to each tool nose, the inlet end of the second cooling flow channel is communicated with the blade and is arranged at a position contacted with the tool body so as to be in butt joint with the outlet end of the first cooling flow channel of the tool body, and the outlet end of the second cooling flow channel is communicated with the blade and is arranged at a position close to the corresponding tool nose. According to the structure, on one hand, the flow velocity of cooling liquid/gas can be improved, and the cooling and chip removal effects of the cooling flow channel are enhanced; on the other hand, the outlet of the cooling flow channel is close to the cutter point, so that the cooling flow channel can act on the cutting chips and the cutter point more accurately, and the cooling effect is improved.
The invention is further explained in detail with the accompanying drawings and the embodiments; an indexable cutting insert with cooling channels of the present invention is not limited to the embodiments.
Drawings
FIG. 1 is a schematic view of a prior art indexable cutting tool with cooling channels;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3 is a schematic structural view of a cutter body according to an embodiment of the present invention;
FIG. 4 is a schematic view of a first cooling flow passage of the cutter body according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a blade of an embodiment of the present invention;
FIG. 6 is a schematic view of the orientation of the bottom surface of a blade of an embodiment of the present invention;
fig. 7 is a structural view of a second cooling flow passage of the insert according to the embodiment of the present invention.
In the figure, 1, a cutter body; 11. mounting grooves; 12. a first cooling flow passage; 121. an inlet end of the first cooling flow passage; 122. an outlet end of the first cooling flow passage; 123. a first section of a first cooling flow passage; 124. a second section of the first cooling channel; 2. a blade; 21. a second cooling flow channel; 211. an inlet end of a second cooling flow channel; 212. an outlet end of the second cooling flow channel; 213. a first cavity of a second cooling flow channel; 214. a second cavity of a second cooling channel; 215. a third chamber of the second cooling flow passage; 22. a rake face; 23. a flank face; 24. a bottom surface; 25. a screw mating hole; 3. and (4) screws.
Detailed Description
Examples
As shown in fig. 2 to 7, an indexable cutting tool with a cooling channel according to the present invention includes a tool body 1 and a plurality of insert pieces 2; the cutter body 1 is provided with a plurality of mounting grooves 11 along the rotation direction of the rotation axis, and each mounting groove 11 is fixedly connected with a blade 2 correspondingly; in the cutter body 1, a first cooling flow channel 12 is respectively arranged corresponding to each mounting groove 11, an inlet end 121 of the first cooling flow channel 12 is communicated with a flow inlet channel (which can be communicated to the outside of the cutter body) of the cutter body, and an outlet end 121 of the first cooling flow channel 12 is communicated with the corresponding mounting groove 11 and is positioned at a position where the first cooling flow channel is contacted with the corresponding blade 2; the insert 2 is an indexable structure, a second cooling flow channel 21 is arranged in the insert 2 corresponding to each tool tip, an inlet end 211 of the second cooling flow channel 21 is communicated with the insert 2 and is arranged at a position contacting with the tool body 1 so as to be butted with an outlet end 122 of the first cooling flow channel 12 of the tool body 1, and an outlet end 212 of the second cooling flow channel 21 is communicated with the insert 2 and is arranged at a position close to the corresponding tool tip.
In this embodiment, the axis of the first cooling channel 12 at least comprises a curve; the inlet end 121 of the first cooling flow passage 12 has a larger area than the outlet end 122 of the first cooling flow passage 12.
In this embodiment, the cross-sectional area of the first cooling channel 12 gradually decreases from the inlet end 121 of the first cooling channel 12 to the outlet end 122 of the first cooling channel 12. The area of the inlet end 211 of the first cooling flow channel 12 of the cutter body 1 is M1, the area of the outlet end 122 of the first cooling flow channel 12 is M2, the ratio of M2 to M1 (M2/M1) is N, and the value range of N is 0 < N < 1, so that the first flow speed increasing effect can be realized.
In this embodiment, the axis of the second cooling flow channel 21 at least comprises a curve; the area of the inlet end 211 of the second cooling flow passage 21 is larger than the area of the outlet end 212 of the second cooling flow passage 21.
In this embodiment, the cross-sectional area of the second cooling flow channel 21 is gradually reduced from the inlet end 211 of the second cooling flow channel 21 to the outlet end 212 of the second cooling flow channel 21. The area of the inlet end 211 of the second cooling flow channel 21 of the blade 2 is m1, the area of the outlet end 212 of the second cooling flow channel 21 is m2, the ratio of m2 to m1 (m2/m1) is n, and the value range of n is 0 < n < 1, so that the secondary flow speed increasing effect can be realized.
In this embodiment, the area and shape of the outlet end 122 of the first cooling flow channel 12 are identical to the area and shape of the inlet end 211 of the second cooling flow channel 21.
In this embodiment, the insert 2 includes a rake surface 22, a flank surface 23 and a bottom surface 24, the inlet end 211 of the second cooling flow passage 21 is disposed on the bottom surface 24 of the insert 2, and the outlet end 212 of the second cooling flow passage 21 is disposed on the rake surface 22; the bottom surface 24 of the blade 2 contacts with the bottom of the mounting groove 11 of the cutter body 1, and the outlet end 122 of the first cooling flow passage 12 is arranged at the bottom of the mounting groove 11 of the cutter body 1.
In this embodiment, the first cooling flow channel 12 includes a first section 123 with a straight axis and a second section 124 with a curved axis, the first section 123 is connected to the inlet end 121 of the first cooling flow channel 12, and the second section 124 is connected to the outlet end 122 of the first cooling flow channel 12.
In this embodiment, the second cooling flow passage 21 includes a first cavity 213 connected to the inlet end 211 of the second cooling flow passage, a second cavity 214 with a curved axis, and a third cavity 215 connected to the outlet end 212 of the second cooling flow passage, wherein the third cavity 215 is provided with a slit structure; wherein, the included angle between the flow velocity direction Vq2 of the cooling liquid/gas of the slit structure 215 and the rotating shaft of the cutter body is alpha, and the value of alpha is more than 0 degree and less than alpha and less than 90 degrees. The angle can promote the chip removal effect of the cooling liquid/gas on the scrap iron and the cooling of the tool nose.
In the present embodiment, the cross-sectional shapes of the first cooling flow channel 12 and the second cooling flow channel 21 are mainly circular, but may be rectangular, polygonal, irregular, or the like.
In this embodiment, the insert 2 is further provided with a screw fitting hole 25, and the insert 2 is fixed to the cutter body 1 by a screw 3.
The cutter material can be made of one or more materials such as carbon steel, stainless steel, titanium alloy, hard alloy, PCD, CBN and the like, and the cutter structure can be applied to a mandrel type, a straight handle type, a side fixed type or other integrated and modularized cutter bodies and the like.
The indexable cutting tool with the cooling flow channel adopts the structure that in the tool body 1, a first cooling flow channel 12 is respectively arranged corresponding to each mounting groove 11, the inlet end 121 of the first cooling flow channel 12 is communicated with the flow inlet channel of the tool body 1, and the outlet end 122 of the first cooling flow channel 12 is communicated with the corresponding mounting groove 11 and is positioned at the position contacted with the corresponding blade 2; the insert 2 is an indexable structure, a second cooling flow channel 21 is arranged in the insert 2 corresponding to each tool tip, an inlet end 211 of the second cooling flow channel 21 is communicated with the insert 2 and is arranged at a position contacting with the tool body 1 so as to be butted with an outlet end 122 of the first cooling flow channel 12 of the tool body 1, and an outlet end 212 of the second cooling flow channel 21 is communicated with the insert 2 and is arranged at a position close to the corresponding tool tip. According to the structure, on one hand, the flow velocity of cooling liquid/gas can be improved, and the cooling and chip removal effects of the cooling flow channel are enhanced; on the other hand, the outlet of the cooling flow channel is close to the cutter point, so that the cooling flow channel can act on the cutting chips and the cutter point more accurately, and the cooling effect is improved.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the scope of the disclosed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. An indexable cutting tool with a cooling channel comprises a tool body and a plurality of blades; the cutter body is provided with a plurality of mounting grooves along the rotation direction of the rotation axis, and each mounting groove is fixedly connected with a blade correspondingly; the method is characterized in that: a first cooling flow channel is arranged in the cutter body corresponding to each mounting groove, the inlet end of each first cooling flow channel is communicated with the flow inlet channel of the cutter body, and the outlet end of each first cooling flow channel is communicated to the corresponding mounting groove and is positioned at a position where the corresponding blade is contacted; the blade is of an indexable structure, a second cooling flow channel is arranged in the blade corresponding to each tool nose, the inlet end of the second cooling flow channel is communicated with the blade and is arranged at a position contacted with the tool body so as to be in butt joint with the outlet end of the first cooling flow channel of the tool body, and the outlet end of the second cooling flow channel is communicated with the blade and is arranged at a position close to the corresponding tool nose.
2. The indexable cutting tool with a cooling flow channel of claim 1 wherein: the axis of the first cooling flow channel at least comprises a section of curve; the area of the inlet end of the first cooling flow passage is larger than the area of the outlet end of the first cooling flow passage.
3. The indexable cutting tool with a cooling flow channel of claim 2 wherein: the cross-sectional area of the first cooling flow channel is gradually reduced from the inlet end of the first cooling flow channel to the outlet end of the first cooling flow channel.
4. The indexable cutting tool with a cooling flow channel of claim 2 wherein: the axis of the second cooling flow channel at least comprises a section of curve; the area of the inlet end of the second cooling flow passage is larger than the area of the outlet end of the second cooling flow passage.
5. The indexable cutting tool with a cooling flow channel of claim 4 wherein: the cross-sectional area of the second cooling flow channel is gradually reduced from the inlet end of the second cooling flow channel to the outlet end of the second cooling flow channel.
6. The indexable cutting tool with a cooling flow channel of claim 4 wherein: the area size and the shape of the outlet end of the first cooling flow channel are matched with the area size and the shape of the inlet end of the second cooling flow channel.
7. The indexable cutting tool with a cooling flow channel of claim 4 wherein: the blade comprises a front blade face, a rear blade face and a bottom face, the inlet end of the second cooling flow passage is arranged at the bottom face of the blade, and the outlet end of the second cooling flow passage is arranged at the front blade face; the bottom surface of the blade is in contact with the bottom of the mounting groove of the cutter body, and the outlet end of the first cooling flow channel is arranged at the bottom of the mounting groove of the cutter body.
8. The indexable cutting tool with a cooling flow channel of claim 2 or 3 wherein: the first cooling flow channel comprises a first section and a second section, the axis of the first section is a straight line, the axis of the second section is a curve, the first section is connected with the inlet end of the first cooling flow channel, and the second section is connected with the outlet end of the first cooling flow channel.
9. The indexable cutting tool with a cooling flow channel of claim 4 or 5, wherein: the second cooling flow passage comprises a first cavity connected with the inlet end of the second cooling flow passage, a second cavity with a curved axis and a third cavity connected with the outlet end of the second cooling flow passage, wherein the third cavity is in a slit structure; wherein, the included angle between the flow speed direction of the cooling liquid/gas of the slit structure and the rotating shaft of the cutter body is alpha, and the value of alpha is more than 0 degree and less than 90 degrees.
10. The indexable cutting tool with a cooling flow channel of claim 4 wherein: the cross sections of the first cooling flow channel and the second cooling flow channel are circular, rectangular or polygonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111534580.9A CN114260495A (en) | 2021-12-15 | 2021-12-15 | Indexable cutting tool with cooling flow channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111534580.9A CN114260495A (en) | 2021-12-15 | 2021-12-15 | Indexable cutting tool with cooling flow channel |
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| Publication Number | Publication Date |
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| CN114260495A true CN114260495A (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111534580.9A Pending CN114260495A (en) | 2021-12-15 | 2021-12-15 | Indexable cutting tool with cooling flow channel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201747446U (en) * | 2010-08-09 | 2011-02-16 | 奇瑞汽车股份有限公司 | Piston cooling nozzle |
| CN102427906A (en) * | 2009-04-22 | 2012-04-25 | 克雷雷有限公司 | Indirect cooling of a rotary cutting tool |
| KR20140103478A (en) * | 2013-02-18 | 2014-08-27 | 한국야금 주식회사 | Cutting insert |
| CN104551044A (en) * | 2014-12-26 | 2015-04-29 | 苏州欧美克合金工具有限公司 | Lathe tool with built-in cooling curve |
| US20160158855A1 (en) * | 2014-12-09 | 2016-06-09 | Kennametal Inc. | Cutting insert with internal coolant passages and method of making same |
| CN208696331U (en) * | 2018-09-03 | 2019-04-05 | 南京林业大学 | A kind of efficiently cooling interior cryoprobe piece and cutter |
| CN208712971U (en) * | 2018-08-02 | 2019-04-09 | 成都市明峰光学仪器有限公司 | A kind of milling cutter with interior cold-working |
-
2021
- 2021-12-15 CN CN202111534580.9A patent/CN114260495A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427906A (en) * | 2009-04-22 | 2012-04-25 | 克雷雷有限公司 | Indirect cooling of a rotary cutting tool |
| CN201747446U (en) * | 2010-08-09 | 2011-02-16 | 奇瑞汽车股份有限公司 | Piston cooling nozzle |
| KR20140103478A (en) * | 2013-02-18 | 2014-08-27 | 한국야금 주식회사 | Cutting insert |
| US20160158855A1 (en) * | 2014-12-09 | 2016-06-09 | Kennametal Inc. | Cutting insert with internal coolant passages and method of making same |
| CN104551044A (en) * | 2014-12-26 | 2015-04-29 | 苏州欧美克合金工具有限公司 | Lathe tool with built-in cooling curve |
| CN208712971U (en) * | 2018-08-02 | 2019-04-09 | 成都市明峰光学仪器有限公司 | A kind of milling cutter with interior cold-working |
| CN208696331U (en) * | 2018-09-03 | 2019-04-05 | 南京林业大学 | A kind of efficiently cooling interior cryoprobe piece and cutter |
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