CN206083948U - Bipyramid angle chip breaking drill bit - Google Patents
Bipyramid angle chip breaking drill bit Download PDFInfo
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- CN206083948U CN206083948U CN201621079989.0U CN201621079989U CN206083948U CN 206083948 U CN206083948 U CN 206083948U CN 201621079989 U CN201621079989 U CN 201621079989U CN 206083948 U CN206083948 U CN 206083948U
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- main cutting
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- drill bit
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Abstract
The utility model provides a bipyramid angle chip breaking drill bit, includes drill tip, work portion and handle of a knife, the drill tip includes and two main cutting edges and chisel edge is the chisel edge between two main cutting edges, and every main cutting edge is equallyd divide for first section main cutting edge and second section main cutting edge, and first section main cutting edge is close to the chisel edge, and second section main cutting edge is close to work portion, and the cone angle that first section main cutting edge in two main cutting edges formed is greater than the cone angle of second section main cutting edge formation, work portion includes flute, land and the land that is extended out by the drill tip, three along paranemic coiling linear extension to handle of a knife. The drill tip main cutting edge of this drill bit is the bipyramid angle, can reduce the chip thickness, reduces the rigidity and the intensity of smear metal, promotes chip deformation and fracture, forms discontinuous smear metal, guarantees the smear metal and discharges smoothly, can effectively reduce cutting force, especially axial cutting force simultaneously, reduces cutter grinder and decreases, improves cutter life, guarantees pore wall processingquality, effectively puies forward high pressure heater work efficiency rate.
Description
Technical field
The utility model is related to a kind of double tapered angle chip-breaking drill bit suitable for difficult-to-machine material drilling processing, can be in lamination
Effective chip breaking, belongs to machining tool technical field during material drilling.
Background technology
Laminated construction is increasingly using in field of aerospace, during automatic drilling laminated construction material,
Traditional fluted drill has that chip is long, chip breaking is difficult, cuts the larger problem of axial force, and the former causes hole drill to enter end and hole wall
Scuffing, drilling temperature are higher, and the latter causes laminated construction interface to occur compared with big gap, and this all will be to laminated construction easily to block up bits
Assembly precision and drilling quality bring considerable influence.
Therefore, how to realize that chip fractures in time, it is to avoid chip twines knife, it is ensured that chip is smoothly discharged, become drilling hardly possible and add
Research emphasis during work material.
Utility model content
The utility model is directed to existing drill bit problem present in laminated construction drilling, proposes a kind of easy chip breaking, avoids
Twine the high double tapered angle chip-breaking drill bit of bits, durability.
Double tapered angle chip-breaking drill bit of the present utility model, employs the following technical solutions：
The drill bit, including apex point, work department and handle of a knife；Apex point includes two main cutting edges and chisel edge, two main cutting edges
Between be chisel edge, every main cutting edge is divided into first paragraph main cutting edge and second segment main cutting edge, and first paragraph main cutting edge is leaned on
Nearly chisel edge, the cone angle that first paragraph main cutting edge of the second segment main cutting edge in work department, two main cutting edges is formed is more than
The cone angle that second segment main cutting edge is formed；Work department includes flute, land and the land extended out by apex point, and three is along flat
Row helix extends to handle of a knife.
The chisel edge length is 0.9 °～1.1mm, it is ensured that the rigidity of drill bit.
The cone angle that the first paragraph main cutting edge is formed is 132 °, and the cone angle that second segment main cutting edge is formed is 90 °.
The length of the first paragraph main cutting edge is not more than the length of second segment main cutting edge.
Two main cutting edge outer most edges anterior angle is 9 °～11 °, and relief angle is 13 °～15 °.
The helical angle of the work department is 40 °.
The utility model by the way that main cutting edge to be divided into the cutting edge of two sections of different cone angles, so as to reduce every section of cutting edge
Thickness of cutting, reduce cutting force, reduce the rigidity and intensity of chip so that chip disconnects in time, realizes effective chip breaking
Purpose, discontinuous chip reduces scuffing of the chip to machined surface, is conducive to smooth chip removal, it is ensured that good drilling
Quality.
Under the cooperation of suitable feed speed, the utility model is drilled with less drilling axial force than common fried dough twist, it is to avoid
Excessive gap is produced between laminated construction, and then piles up chip and powder affects laminated construction quality.Suitable for high temperature alloy,
The difficult-to-machine materials such as titanium alloy drilling processing, can effectively chip breaking, promotion chip removal, it is ensured that tool life, drilling quality
And working (machining) efficiency.
Description of the drawings
Fig. 1 is the structural representation of the utility model double tapered angle chip-breaking drill bit.
Fig. 2 is the left view of the utility model double tapered angle chip-breaking drill bit.
Fig. 3 is the drill bit part profile of the utility model double tapered angle chip-breaking drill bit.
Fig. 4 is the schematic diagram of the drill bit part angle of the utility model double tapered angle chip-breaking drill bit and sword length.
In figure：1. first paragraph main cutting edge, 2. second segment main cutting edge, 3. flute, 4. handle of a knife, 5. chisel edge, 6. land, 7.
Knife face after master, 8. rake face, 9. land.
Specific embodiment
Chip-breaking drill bit with double tapered angle blade type of the present utility model, material is hard alloy, its structure such as Fig. 1 and Fig. 2
It is shown, including the apex point, work department and the part of handle of a knife three that are sequentially connected.
Apex point includes two main cutting edges, a chisel edge 5 and roots, and two main cutting edges are symmetrical with center line, with two
Knife face 7 and two symmetrical rake faces 8 of relative center line after the symmetrical master of individual relative center line, referring to Fig. 3 and Fig. 4.Two masters
It is chisel edge 5 between cutting edge, is the rigidity for ensureing drill bit, the length of chisel edge 5 is set to 0.9mm～1.1mm.Every main cutting edge is equal
It is divided into first paragraph main cutting edge 1 and second segment main cutting edge 2, first paragraph main cutting edge 1 is near chisel edge, second segment main cutting edge 2
Near work department.Referring to Fig. 4, the θ of cone angle 2 that the first paragraph main cutting edge in two main cutting edges is formed is 132 °, length l1；Two
The θ ' of cone angle 2 that second segment main cutting edge in bar main cutting edge is formed is 90 °, length l2.The length of two sections of main cutting edges meets l1
≤l2.The outer most edge anterior angle of two main cutting edges is 9 °～11 °, to ensure the sharpness of cutting edge, reduces cutting force；Outer most edge
Relief angle is 13 °～15 °, it is ensured that the sharpness of cutter, reduces the contact area with machined surface.
Two symmetrical and parallel flutes 3 (helicla flute) that work department includes being extended out by apex point, two it is symmetrical and flat
Capable land 6 (front cutting edge) with two with the symmetrical and parallel land 9 of center line, three extends to circle along parallel spires
Cylindricality handle of a knife 4, helical angle ω of work department selects to be 40 °.Work department and the length of handle of a knife 4 are all 35mm.
Bit diameter d refers to the distance between two outermosts of land 6 of work department, and rear angular region is 13 °～15 °, is subtracted
The friction of little drill bit and machined surface, is to ensure drilling aluminium alloy process so as to be conducive to obtaining more excellent surface quality
In chip removal effect.
In the parameter of the double tapered angle chip-breaking drill bit, the cutting edge of two kinds of different cone angles can effectively reduce each cutting
The thickness of cutting of sword, reduces the rigidity of chip so that chip is easy to fracture, and so as to reduce cutting force and length of chip, keeps away
Exempt from chip and twined knife, improve crudy and working (machining) efficiency.
Above-mentioned drill bit is applied to the drilling of difficult-to-machine material (high strength steel, high temperature alloy, titanium alloy etc.) and processes, Neng Gouyou
Effect reduces depth of cut, reduces chip rigidity and intensity, final to accelerate chip deformation and fracture, reaches effective chip breaking, promotes row
Bits, the effect for improving crudy and efficiency.
Claims (6)
1. a kind of double tapered angle chip-breaking drill bit, including apex point, work department and handle of a knife；It is characterized in that：Apex point includes two main cutting edges
And chisel edge, it is chisel edge between two main cutting edges, every main cutting edge is divided into first paragraph main cutting edge and second segment main cutting
Sword, near chisel edge, second segment main cutting edge the first paragraph master in work department, two main cutting edges cut first paragraph main cutting edge
Cut tooth shape into cone angle more than second segment main cutting edge formed cone angle；Work department includes flute, the sword extended out by apex point
Band and land, three extends to handle of a knife along parallel spires.
2. double tapered angle chip-breaking drill bit according to claim 1, is characterized in that：The chisel edge length is 0.9mm～1.1mm.
3. double tapered angle chip-breaking drill bit according to claim 1, is characterized in that：The cone angle that the first paragraph main cutting edge is formed
For 132 °, the cone angle that second segment main cutting edge is formed is 90 °.
4. double tapered angle chip-breaking drill bit according to claim 1, is characterized in that：The length of the first paragraph main cutting edge is little
In the length of second segment main cutting edge.
5. double tapered angle chip-breaking drill bit according to claim 1, is characterized in that：Two main cutting edges outer most edge anterior angle is
9 °～11 °, relief angle is 13 °～15 °.
6. double tapered angle chip-breaking drill bit according to claim 1, is characterized in that：The helical angle of helix is in the work department
40°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621079989.0U CN206083948U (en) | 2016-09-26 | 2016-09-26 | Bipyramid angle chip breaking drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621079989.0U CN206083948U (en) | 2016-09-26 | 2016-09-26 | Bipyramid angle chip breaking drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206083948U true CN206083948U (en) | 2017-04-12 |
Family
ID=58479675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621079989.0U Expired - Fee Related CN206083948U (en) | 2016-09-26 | 2016-09-26 | Bipyramid angle chip breaking drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206083948U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216743A (en) * | 2016-09-26 | 2016-12-14 | 山东大学 | A kind of double tapered angle chip-breaking drill bit |
| CN106984850A (en) * | 2017-06-08 | 2017-07-28 | 昆山伟吉电子有限公司 | A kind of groove knife for easily surrounding cutting |
| CN108608040A (en) * | 2018-05-10 | 2018-10-02 | 大连理工大学 | For composite material and its micro- serrated knife tool of the double ladders of the perpendicular sword of laminated construction high quality drilling |
| CN110394484A (en) * | 2019-08-13 | 2019-11-01 | 厦门厦芝科技工具有限公司 | A kind of three apex angular bit heads |
| CN110561547A (en) * | 2019-09-27 | 2019-12-13 | 广东鼎泰高科精工科技有限公司 | Drill bit for target hole drilling of high TG plate |
| US11278970B2 (en) | 2018-10-09 | 2022-03-22 | Milwaukee Electric Tool Corporation | Drill bit |
| US11407039B2 (en) | 2018-01-29 | 2022-08-09 | Milwaukee Electric Tool Corporation | Drill bit |
-
2016
- 2016-09-26 CN CN201621079989.0U patent/CN206083948U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216743A (en) * | 2016-09-26 | 2016-12-14 | 山东大学 | A kind of double tapered angle chip-breaking drill bit |
| CN106984850A (en) * | 2017-06-08 | 2017-07-28 | 昆山伟吉电子有限公司 | A kind of groove knife for easily surrounding cutting |
| US11407039B2 (en) | 2018-01-29 | 2022-08-09 | Milwaukee Electric Tool Corporation | Drill bit |
| CN108608040A (en) * | 2018-05-10 | 2018-10-02 | 大连理工大学 | For composite material and its micro- serrated knife tool of the double ladders of the perpendicular sword of laminated construction high quality drilling |
| CN108608040B (en) * | 2018-05-10 | 2020-04-07 | 大连理工大学 | Vertical-edge double-step micro-tooth cutter for high-quality hole making of composite material and laminated structure of composite material |
| US11278970B2 (en) | 2018-10-09 | 2022-03-22 | Milwaukee Electric Tool Corporation | Drill bit |
| CN110394484A (en) * | 2019-08-13 | 2019-11-01 | 厦门厦芝科技工具有限公司 | A kind of three apex angular bit heads |
| CN110561547A (en) * | 2019-09-27 | 2019-12-13 | 广东鼎泰高科精工科技有限公司 | Drill bit for target hole drilling of high TG plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20190926 |