CN103752929B - Rotary cutting tool with double-layered cutting edge - Google Patents
Rotary cutting tool with double-layered cutting edge Download PDFInfo
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- CN103752929B CN103752929B CN201310742860.8A CN201310742860A CN103752929B CN 103752929 B CN103752929 B CN 103752929B CN 201310742860 A CN201310742860 A CN 201310742860A CN 103752929 B CN103752929 B CN 103752929B
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- 238000005520 cutting process Methods 0.000 title claims abstract description 330
- 238000001816 cooling Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 10
- 238000003754 machining Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention discloses a rotary cutting tool with a double-layered cutting edge. The rotary cutting tool comprises a tool body, the tool body is provided with at least one set of tool grooves, a cutting tip set consisting of a first cutting tip and a second cutting tip is fixed on each tool groove by a fastener, the first cutting tip is pressed on the second cutting tip, the second cutting tip is pressed on the tool groove, and in the process of cutting processing, the cutting feed of the second cutting tip is larger than or equal to that of the first cutting tip. The rotary cutting tool with a double-layered cutting edge disclosed by the invention has the advantages of high cutting efficiency, easy manufacturing, cost reduction and smooth chip removal.
Description
Technical field
The present invention relates to metal cutting process field, more particularly, to a kind of rotary cutting tool with double-layer cutting edges.
Background technology
Rotary cutting tool, in order to improve working (machining) efficiency, is generally equipped with the cutting tip of multi-quantity as far as possible, so that for revolving
Turn cutting tool and cutting edge as much as possible is set, the purpose of do so is to be at utmost to reduce cutting edge under identical feeding
Cutting force on piece especially tangential force.However, rotary cutting tool is when using, in order to ensure that chip smoothly discharges and keep away
Exempt from and cutter hub interfere, in the circumferential, need have chip space to be generally chip pocket in the top surface areas of milling cutting insert, simultaneously for
Ensure that blade installation slot can be that cutting tip provides enough cutting bearing capacitys and impact resistance, need in cutter groove
Bottom retains relatively thicker material, therefore, need to take into account the demand of chip pocket and cutter groove during design cutter, in rotary cutting sharpener
Sufficiently large chip pocket should be had to carry out chip removal in the circumference of tool, have sufficiently thick entity to carry out proof strength again, this necessarily just leads
The quantity having caused cutting tip is restricted.As can be seen here, in the prior art rotary cutting tool in order to improve working (machining) efficiency
Need to arrange cutting tip as much as possible, and in order to ensure that chip removal and tool strength need setting cutting edge as few as possible
Piece, this contradiction has become the principal element limiting rotary cutting tool cutting ability.
In order to reduce the restriction to rotary cutting tool for the above-mentioned contradiction, occur in that there is double-layer cutting edges structure at present
Cutting tip load rotary cutting tool technical scheme, the cutting tip in a cutter groove can successively be cut twice from
And realize increasing the purpose of cutting edge number, this kind of structure largely improves effective sword that rotary cutting tool participates in cutting
Number, but, in order to ensure the edge strength first participating in the cutting tip of double-layer cutting edges structure cutting, this cutting edge needs to be had
There is rear knife face full enough, this participates in the cutting edge corresponding channel space very little cut after making, groove design is also subject to
Very big restriction, corresponding chip breaking, with to hold bits ability also very poor, therefore, is entered to the cutting tip of this double-layer cutting edges structure
During row design, the rear cutting edge participating in cutting need to be set smaller than first participating in respect to the radius of clean-up of rotary cutting central shaft
The cutting edge of cutting is with respect to the radius of clean-up of rotary cutting central shaft, thus the cutting edge participating in after reducing cutting corresponding is cut
Cut the amount of feeding, so that its work in-process produces more frangibility, is more easy to the chip of discharge.From the point of view of changing an angle, due to rear participation
The cutting edge corresponding cutting feed amount very little of cutting, its cutting contribution less, along with this, there are double-layer cutting edges
Cutting blade structure is complicated, precision controlling is difficult, manufacturing cost is very high, and after having one layer of cutting edge abrasion in two-layer cutting edge
It is necessary for changing whole blade, use cost is very high it is seen that its cost performance is actually very low.
Content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide stock-removing efficiency high, easily manufactured, section
The about smooth rotary cutting tool with double-layer cutting edges of cost and chip removal.
For solving above-mentioned technical problem, the present invention employs the following technical solutions:
A kind of rotary cutting tool with double-layer cutting edges, including cutter hub, described cutter hub is provided with least one set cutter groove,
The cutting tip group being made up of the first cutting tip and the second cutting tip is fixed with by securing member in described cutter groove, described the
One cutting tip is pressed on the second cutting tip, and described second cutting tip is pressed in cutter groove, during machining, described
The cutting feed of two cutting tips is more than or equal to the cutting feed of the first cutting tip.
Improvement further as technique scheme:
Described first cutting tip by the first top surface, the first bottom surface and is connected between the first top surface and the first bottom surface
One side surrounds, and described second cutting tip by the second top surface, the second bottom surface and is connected between the second top surface and the second bottom surface
Second side surround, described first side and the first top surface are crossed to form the first cutting edge, described second side and the second top
Face is crossed to form the second cutting edge, and the distance of described second cutting edge and the Pivot axle of rotary cutting tool is cut more than first
Cut the distance of sword and the Pivot axle of rotary cutting tool.
Described cutter groove is surrounded by the first groove side, the second groove side and groove bottom, and described groove bottom is provided with tight for connecting
The fixing hole of firmware, described first bottom surface and the second top surface are pressed into contact with, and described second bottom surface is pressed into contact with groove bottom.
Described groove bottom is provided with the projection of intersection, and described second bottom surface is provided with the concave station of intersection, described raised and concave station card
Tight fit.
It is provided with gap, described first side is connect with the first groove lateral surface compressing between described second groove side and second side
Touch.
Described first side and the first top surface are crossed to form the first cutting edge, and described second side and the second top surface intersect shape
Become the second cutting edge, described first cutting edge and the second cutting edge are continuous cutting sword.
Described first side and the first top surface are crossed to form the first cutting edge, and described second side and the second top surface intersect shape
Become the second cutting edge, described first cutting edge is continuous cutting sword, and it is recessed that described second cutting edge is provided with multiple cutting edges.
Described first side and the first top surface are crossed to form the first cutting edge, and described second side and the second top surface intersect shape
Become the second cutting edge, it is recessed that described first cutting edge is provided with multiple cutting edges, described second cutting edge is continuous cutting sword.
Described first side and the first top surface are crossed to form the first cutting edge, and described second side and the second top surface intersect shape
Multiple cutting edges are recessed to become the second cutting edge, described first cutting edge and the second cutting edge to be equipped with, the sword of described first cutting edge
Stomatodeum enters the recessed complementation with the cutting edge of the second cutting edge.
It is provided with the cooling bath leading to first side, on described cutter hub between described first cutting tip and the second cutting tip
It is provided with cooling duct, described cooling duct is connected with cooling bath.
Sealing member is arranged with described securing member, described securing member passes through the centre bore two to the first cutting tip for the sealing member
End sealing.
Compared with prior art, it is an advantage of the current invention that:
The rotary cutting tool with double-layer cutting edges of the present invention, is provided with the first cutting edge of superposition in single cutter groove
Piece and the second cutting tip, two blades are separate, can individually process respectively during processing and fabricating, to respective rear knife face,
The design limit of the key positions such as flute profile greatly reduces, and the chip breaking of two cutting tips can be made close with appearance bits ability, therefore cut
When cutting processing, the cutting feed of the second cutting tip can be more than or equal to the cutting feed of the first cutting tip, makes two to cut
Paring blade makes close cutting contribution in rotary cutting, improves the actual cut efficiency of two cutting edges in single cutter groove；
And each blade structure of itself is simple, and compared to the blade with double-layer cutting edges, its difficulty of processing, manufacturing cost drop significantly
Low, and make precision control be easier；After single cutting edge abrasion, can only change a corresponding blade, use cost
Reduce；Two cutting edges participating in cutting in single cutter groove are no longer fixing with respect to the circumferential size of the cutting tool centre of gyration
, by mating different blades, the radius of clean-up difference of two cutting edges becomes adjustable cutting parameter, such that it is able to
Meet the demand of more different cutting occasions, improve the applicable ability of rotary cutting tool, adjust two using this function and cut
Cut the radius of clean-up of sword, can make it have close to or identical cutting feed amount so that two cutting tips have close
Service life, reduces the tool changing frequency in using, using more convenient.
Brief description
Fig. 1 is the perspective view of rotary cutting tool first embodiment of the present invention.
Fig. 2 is the present invention looks up structural representation of rotary cutting tool first embodiment of the present invention.
Fig. 3 is the structural representation of cutting tip group in rotary cutting tool first embodiment of the present invention.
Fig. 4 is the present invention looks up structural representation of the first cutting tip in rotary cutting tool first embodiment of the present invention.
Fig. 5 is the perspective view of the first cutting tip in rotary cutting tool first embodiment of the present invention.
Fig. 6 is the present invention looks up structural representation of the second cutting tip in rotary cutting tool first embodiment of the present invention.
Fig. 7 is the perspective view of the second cutting tip in rotary cutting tool first embodiment of the present invention.
Fig. 8 is the perspective view of rotary cutting tool second embodiment of the present invention.
Fig. 9 is the present invention looks up structural representation of rotary cutting tool second embodiment of the present invention.
Figure 10 is the structural representation of cutting tip group in rotary cutting tool second embodiment of the present invention.
Figure 11 is the present invention looks up structural representation of the first cutting tip in rotary cutting tool second embodiment of the present invention.
Figure 12 is the perspective view of the first cutting tip in rotary cutting tool second embodiment of the present invention.
Figure 13 is the present invention looks up structural representation of the second cutting tip in rotary cutting tool second embodiment of the present invention.
Figure 14 is the perspective view of the second cutting tip in rotary cutting tool second embodiment of the present invention.
Figure 15 is the perspective view of rotary cutting tool 3rd embodiment of the present invention.
The each label of in figure represents:
1st, cutter hub；11st, cooling duct；2nd, cutter groove；21st, the first groove side；22nd, the second groove side；23rd, groove bottom；24th, solid
Determine hole；3rd, the first cutting tip；31st, the first top surface；32nd, the first bottom surface；33rd, first side；34th, the first cutting edge；35th, center
Hole；4th, the second cutting tip；41st, the second top surface；42nd, the second bottom surface；43rd, second side；44th, the second cutting edge；5th, securing member；
6th, cooling bath；7th, raised；8th, concave station；9th, sealing member.
Specific embodiment
Fig. 1 to Fig. 7 shows that the first of the present invention has the rotary cutting tool embodiment of double-layer cutting edges, this rotation
Cutting tool includes cutter hub 1, and cutter hub 1 is provided with least one set cutter groove 2, is fixed with by securing member 5 and is cut by first in cutter groove 2
Blade 3 and the cutting tip group of the second cutting tip 4 composition, the first cutting tip 3 is pressed on the second cutting tip 4, and second
Cutting tip 4 is pressed in cutter groove 2, and the second cutting tip 4 has bigger rotary cutting radius compared with the first cutting tip 3, cuts
When cutting processing, the cutting feed of the second cutting tip 4 is more than or equal to the cutting feed of the first cutting tip 3, in single cutter groove
Inside it is provided with the first cutting tip 3 and second cutting tip 4 of superposition, two blades are separate, can be independent during processing and fabricating
Process respectively, the design limit of the key positions such as respective rear knife face, flute profile is greatly reduced, the disconnected of two cutting tips can be made
Bits are close with appearance bits ability, and the cutting feed of the therefore second cutting tip 4 is more than or equal to being cut into of the first cutting tip 3
Give, thus the first cutting tip 3 in single cutter groove 2, the second cutting tip 4 can under close cutting depth twice successively
Carry out stable circumference cutting, make two cutting tips make close cutting contribution in rotary cutting, improve single cutter groove 2
The actual cut efficiency of interior two cutting edges；And each blade structure of itself is simple, compared to the knife with double-layer cutting edges
Piece, its difficulty of processing, manufacturing cost substantially reduce, and the control of making precision is easier；After single cutting edge abrasion, can be only
Change a corresponding blade, use cost reduces；Two cutting edges of cutting are participated in respect to cutting tool in single cutter groove 2
The circumferential size of the centre of gyration is no longer fixing, and by mating different blades, the radius of clean-up difference of two cutting edges becomes
For adjustable cutting parameter, such that it is able to meet the demand of more different cutting occasions, improve the suitable of rotary cutting tool
With ability, adjust the radius of clean-up of two cutting edges using this function, close or identical cutting feed can be made it have
Amount, so that two cutting tips have close service life, reduces the tool changing frequency in using, using more convenient.
In the present embodiment, the first cutting tip 3 by the first top surface 31, the first bottom surface 32 and is connected to the first top surface 31 and
First side 33 between one bottom surface 32 surrounds, and the second cutting tip 4 by the second top surface 41, the second bottom surface 42 and is connected to second
Second side 43 between top surface 41 and the second bottom surface 42 surrounds, and first side 33 and the first top surface 31 are crossed to form the first cutting
Sword 34, second side 43 and the second top surface 41 are crossed to form the second cutting edge 44, the second cutting edge 44 and rotary cutting tool
The distance of Pivot axle is more than the distance of the first cutting edge 34 and the Pivot axle of rotary cutting tool.Cutter groove 2 is by first
Groove side 21, the second groove side 22 and groove bottom 23 surround, and groove bottom 23 is provided with the fixing hole 24 for securing member is connected 5, the
One bottom surface 32 is pressed into contact with the second top surface 41, and the second bottom surface 42 and groove bottom 23 are pressed into contact with, the second groove side 22 and second
It is provided with gap, first side 33 is pressed into contact with the first groove side 21 between side 43.
In the present embodiment, groove bottom 23 is provided with the projection 7 of intersection, and the second bottom surface 42 is provided with the concave station 8 of intersection, raised 7 with
Concave station 8 snap-fit, can effectively limit the second cutting tip 4 and produce loosening, raising cutting stability in cutting.
In the present embodiment, first side 33 and the first top surface 31 are crossed to form the first cutting edge 34, second side 43 and
Two top surfaces 41 are crossed to form the second cutting edge 44, and the first cutting edge 34 and the second cutting edge 44 are continuous cutting sword, Ke Yiguang
General it is applied to polish, semifinishing occasion.
In the present embodiment, it is provided with, between the first cutting tip 3 and the second cutting tip 4, the cooling bath leading to first side 33
6, cutter hub 1 is provided with cooling duct 11, and cooling duct 11 is connected with cooling bath 6.Cooling medium passes through cooling duct 11, cooling bath
6 can reach cutting zone, cutting zone can be carried out sufficiently cool, and the chip that the second cutting tip 4 is produced is formed
Impact is quick to discharge chip；Simultaneously when cooling medium adopts high pressure to cool down, chip can be made quickly to fracture, thus increasing by second
The cutting power of cutting tip 4, improves the cutting feed that can bear and cutting load.Sealing member 9 is arranged with securing member 5, tightly
Firmware 5 passes through sealing member 9 and centre bore 35 two ends of the first cutting tip 3 is sealed, and securing member 5 is cut to first by sealing member 9
The centre bore 35 two ends sealing of paring blade 3, thus improve high pressure cooling effect.
Fig. 8 to Figure 14 shows that the second of the present invention has the rotary cutting tool embodiment of double-layer cutting edges, this reality
Apply example essentially identical with first embodiment, differ only in: the first cutting edge 34 and the second cutting edge 44 are equipped with multiple cutting edges
Recessed, the recessed recessed complementation of cutting edge with the second cutting edge 44 of cutting edge of the first cutting edge 34, this cutting edge combination can be
Big degree is strengthened chip removal ability and is reduced cutting edge impulsive force, thus being widely used in semifinishing, roughing occasion.
Figure 15 shows that the third of the present invention has a rotary cutting tool embodiment of double-layer cutting edges, the present embodiment with
First embodiment is essentially identical, differs only in: the first cutting edge 34 is continuous cutting sword, and the second cutting edge 44 is provided with multiple swords
Stomatodeum is entered.Additionally, in other embodiments, recessed, the second cutting edge 44 that the first cutting edge 34 can also be set to multiple cutting edges
It is set to continuous cutting sword.The combination of both cutting edges can be widely applied to semifinishing, roughing occasion.
Although the present invention is disclosed above with preferred embodiment, but it is not limited to the present invention.Any it is familiar with ability
The technical staff in domain, in the case of without departing from technical solution of the present invention scope, can be utilized the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible variations and modification, or the Equivalent embodiments being revised as equivalent variations.Therefore, every
Without departing from the content of technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments,
Equivalent variations and modification, all should fall in the range of technical solution of the present invention protection.
Claims (11)
1. a kind of rotary cutting tool with double-layer cutting edges, including cutter hub (1), described cutter hub (1) is provided with least one set
Cutter groove (2) it is characterised in that: be fixed with by securing member (5) in described cutter groove (2) and cut by the first cutting tip (3) and second
The cutting tip group that paring blade (4) forms, described first cutting tip (3) is pressed on the second cutting tip (4), and described second
Cutting tip (4) is pressed in cutter groove (2), and during machining, the cutting feed of described second cutting tip (4) is more than or equal to
The cutting feed of the first cutting tip (3).
2. the rotary cutting tool with double-layer cutting edges according to claim 1 it is characterised in that: described first cutting
Blade (3) by the first top surface (31), the first bottom surface (32) and is connected between the first top surface (31) and the first bottom surface (32)
One side (33) surrounds, and described second cutting tip (4) by the second top surface (41), the second bottom surface (42) and is connected to the second top surface
(41) second side (43) and the second bottom surface (42) between surrounds, and described first side (33) intersects shape with the first top surface (31)
The first cutting edge (34), described second side (43) and the second top surface (41) is become to be crossed to form the second cutting edge (44), described
Two cutting edges (44) are more than the first cutting edge (34) and rotary cutting tool with the distance of the Pivot axle of rotary cutting tool
Pivot axle distance.
3. the rotary cutting tool with double-layer cutting edges according to claim 2 it is characterised in that: described cutter groove (2)
Surrounded by the first groove side (21), the second groove side (22) and groove bottom (23), described groove bottom (23) is provided with tight for connecting
The fixing hole (24) of firmware (5), described first bottom surface (32) and the second top surface (41) are pressed into contact with, described second bottom surface (42) with
Groove bottom (23) is pressed into contact with.
4. the rotary cutting tool with double-layer cutting edges according to claim 3 it is characterised in that: described groove bottom
(23) it is provided with the projection (7) of intersection, described second bottom surface (42) is provided with the concave station (8) of intersection, described projection (7) and concave station (8)
Snap-fit.
5. the rotary cutting tool with double-layer cutting edges according to claim 3 it is characterised in that: described second groove side
It is provided with gap, described first side (33) is pressed into contact with the first groove side (21) between face (22) and second side (43).
6. the rotary cutting tool with double-layer cutting edges according to any one of claim 2 to 5 it is characterised in that:
Described first side (33) and the first top surface (31) are crossed to form the first cutting edge (34), described second side (43) and the second top
Face (41) is crossed to form the second cutting edge (44), and described first cutting edge (34) and the second cutting edge (44) are continuous cutting
Sword.
7. the rotary cutting tool with double-layer cutting edges according to any one of claim 2 to 5 it is characterised in that:
Described first side (33) and the first top surface (31) are crossed to form the first cutting edge (34), described second side (43) and the second top
Face (41) is crossed to form the second cutting edge (44), and described first cutting edge (34) is continuous cutting sword, described second cutting edge
(44) it is provided with multiple cutting edges recessed.
8. the rotary cutting tool with double-layer cutting edges according to any one of claim 2 to 5 it is characterised in that:
Described first side (33) and the first top surface (31) are crossed to form the first cutting edge (34), described second side (43) and the second top
Face (41) is crossed to form the second cutting edge (44), and it is recessed that described first cutting edge (34) is provided with multiple cutting edges, described second cutting
Sword (44) is continuous cutting sword.
9. the rotary cutting tool with double-layer cutting edges according to any one of claim 2 to 5 it is characterised in that:
Described first side (33) and the first top surface (31) are crossed to form the first cutting edge (34), described second side (43) and the second top
Face (41) is crossed to form the second cutting edge (44), and described first cutting edge (34) and the second cutting edge (44) are equipped with multiple cutting edges
Recessed, the recessed recessed complementation of cutting edge with the second cutting edge (44) of cutting edge of described first cutting edge (34).
10. the rotary cutting tool with double-layer cutting edges according to any one of claim 2 to 5 it is characterised in that:
It is provided with the cooling bath (6) leading to first side (33) between described first cutting tip (3) and the second cutting tip (4), described
Cutter hub (1) is provided with cooling duct (11), and described cooling duct (11) is connected with cooling bath (6).
11. rotary cutting tools with double-layer cutting edges according to claim 10 it is characterised in that: described securing member
(5) it is arranged with sealing member (9) on, described securing member (5) passes through the centre bore (35) to the first cutting tip (3) for the sealing member (9)
Two ends seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310742860.8A CN103752929B (en) | 2013-12-30 | 2013-12-30 | Rotary cutting tool with double-layered cutting edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310742860.8A CN103752929B (en) | 2013-12-30 | 2013-12-30 | Rotary cutting tool with double-layered cutting edge |
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| Publication Number | Publication Date |
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| CN103752929A CN103752929A (en) | 2014-04-30 |
| CN103752929B true CN103752929B (en) | 2017-01-25 |
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| CN201310742860.8A Active CN103752929B (en) | 2013-12-30 | 2013-12-30 | Rotary cutting tool with double-layered cutting edge |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107803541A (en) * | 2017-12-06 | 2018-03-16 | 成都工具研究所有限公司 | Multilayer milling cutter blade capable of rotating positions and its manufacture method |
| CN114012153B (en) * | 2021-11-03 | 2022-08-30 | 株洲华锐精密工具股份有限公司 | Cutting tool |
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| US3574911A (en) * | 1969-12-17 | 1971-04-13 | Milling Specialties Inc | Cutter and inserts therefor |
| US5004378A (en) * | 1988-05-19 | 1991-04-02 | Mitsubishi Metal Corporation | Clamped cutting tool |
| US4938639A (en) * | 1989-05-12 | 1990-07-03 | Kennametal Inc. | Combination tool holder |
| US5938377A (en) * | 1996-04-19 | 1999-08-17 | Seco Tools Ab | Cutting tool for chip removal and a locking pin |
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| Publication number | Publication date |
|---|---|
| CN103752929A (en) | 2014-04-30 |
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