CN201267890Y - Multi-edge nib chip-breaker - Google Patents
Multi-edge nib chip-breaker Download PDFInfo
- Publication number
- CN201267890Y CN201267890Y CNU2008201655180U CN200820165518U CN201267890Y CN 201267890 Y CN201267890 Y CN 201267890Y CN U2008201655180 U CNU2008201655180 U CN U2008201655180U CN 200820165518 U CN200820165518 U CN 200820165518U CN 201267890 Y CN201267890 Y CN 201267890Y
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- Prior art keywords
- edge
- drill bit
- cutting
- circular arc
- point
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000008685 targeting Effects 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 7
- 239000012809 cooling fluid Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 235000019628 coolness Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model discloses a multi-point chip breaker, comprising a drill point part and a guiding part. Two main cutting edges of the drill point part respectively comprise an outer edge 11, a circular arc edge 12 and an inner edge 13 from the outer to the inner; a chisel edge 14 positioned at the central part of the drill point is arranged between the two inner edges 13; the two outer edge 11 and the two circular arc edges 12 are crossed to form two arc points 15. The middle point of the chisel edge 14 between the two inner edges 13 is of a boring point 16 of the central part of the drill point. In the projection of the plane surface 17 of the drill bit, the included angle between the tangent line of the arc point 15 of the circular arc edge 12 and the outer edge 11, i.e., the chip breaking angle Ksi of the arc edge, is 140 degrees to 160 degrees. The ration between the farthest vertical distance of the inward extension line from the circular arc edge 12 to the outer edge 11, i.e., the normal depth h of the arc edge, and the diameter d of the drill bit is 0.02 to 0.03: 1. The multi-point chip breaker can stably break chip and improve the abrasion resistance of the drill bit and the safety of operation.
Description
Technical field
The utility model relates to machining tool, especially is applied to the machining tool of toughness material, specifically is that the chip breaking of a kind of multiple-cutting-edge point is bored.
Background technology
Present multiple-cutting-edge point Ni Zhifu drill, comprise apex point part and targeting part, two main cutting edges of this apex point part ecto-entad respectively are divided into three sections of outside, circular arc sword and inner edges, it between two inner edges chisel edge that is positioned at the apex point centre, form seven swords, this two outside and two circular arc swords intersect formation two arc blade tips, the inner of two circular arc swords is connected with the outer end of two inner edges is slick and sly, chisel edge between two inner edges becomes the unbearable point in this apex point centre, and forming with unbearable point is the tricuspid that center, two arc blade tip symmetries are positioned at its both sides.
The multiple-cutting-edge point Ni Zhifu drill of prior art is when toughness materials such as the bigger mild steel of brill toughness, steel alloy, stainless steel, have following shortcoming: outside goes out banded bits, twining drill bit can not chip breaking, the obstruction cooling fluid is injected, can make drill bit produce sharp wear when serious, thereby reduce the durability of drill bit, and the drilling cuttings of winding drill bit is also dangerous to operation, is not easy cleaning.
The utility model content
The technical problems to be solved in the utility model is, provides a kind of energy to stablize chip breaking and the multiple-cutting-edge point chip breaking that can improve the drill bit durability and improve processing safety is bored.
The technical solution of the utility model is, provide a kind of multiple-cutting-edge point chip breaking to bore with following structure, comprise apex point part and targeting part, two main cutting edges of this apex point part ecto-entad respectively comprise outside, circular arc sword and inner edge, are the chisel edges that is positioned at the apex point centre between described two inner edges; Described two outsides and two circular arc swords intersect formation two arc blade tips, the mid point of the chisel edge between described two inner edges becomes the unbearable point in this apex point centre, in the projection of drill bit midplane, described circular arc sword is that arc sword branch bits angle is 140 °～160 ° at the tangent line and the angle between the outside of arc blade tip; Described circular arc sword is that the diameter ratio of the arc sword normal direction degree of depth and this drill bit is 0.02～0.03:1 to the vertical range farthest of the inside extended line of outside.
After adopting above structure, the utility model compared with prior art, have the following advantages: because in the projection of drill bit midplane, described circular arc sword is 140 °～160 ° at the tangent line and the angle between the outside of arc blade tip for the arc sword divides the bits angle, described circular arc sword is that the diameter ratio of the arc sword normal direction degree of depth and this drill bit is 0.02～0.03: 1 to the vertical range farthest of the inside extended line of outside, just can be controlled at and divide bits when chip-flowing changes naturally, naturally fracture, drill bit is twined in the smear metal of avoiding drilling to produce, cooling fluid is injected smoothly, guaranteed that drill bit has enough coolings, thereby improved the durability of drill bit, improve handling safety, clear up smear metal easily.
As improvement, it is that 150 ° of diameter ratios with described arc sword normal direction degree of depth h and this drill bit are 0.025: 1 that described arc sword divides bits angle ξ, divides bits like this when chip-flowing changes naturally, and better effects if naturally fractures.
As improvement, described sharp angle 2 Φ are 125 °～145 °, can help to control chip-flowing, form bigger arc sword branch bits angle, guarantee branch bits, chip breaking.
As improvement, the diameter ratio of described outside length and this drill bit is: 0.20～0.30: 1, consider that also drill bit master angle of cutting edge optimization designs with forming the figure six smear metal.
As improvement, the diameter ratio of described circular arc sword radius and this drill bit is: 0.14～0.22: 1, and help under the prerequisite that guarantees arc sword branch bits angle, to control the circular arc sword like this and be connected with inner edge is smooth.
Description of drawings
The master that accompanying drawing 1 bores for multiple-cutting-edge point of the present utility model chip breaking looks schematic diagram.
Accompanying drawing 2 is the schematic top plan view that multiple-cutting-edge point of the present utility model chip breaking is bored.
Accompanying drawing 3 is the perspective view at midplane that multiple-cutting-edge point of the present utility model chip breaking is bored.
As shown in the figure: 11, outside, 12, the circular arc sword, 13, inner edge, 14, chisel edge, 15, the arc blade tip, 16, unbearable point, 17, midplane, ξ, arc sword divide bits angle, h, the arc sword normal direction degree of depth, d, bit diameter, L, length, R, circular arc sword radius, 2 Φ, sharp angle.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As Fig. 1, Fig. 2, shown in Figure 3, multiple-cutting-edge point of the present utility model chip breaking is bored, comprise apex point part and targeting part, two main cutting edges of this apex point part ecto-entad respectively comprise outside 11, circular arc sword 12 and inner edge 13, are the chisel edges 14 that is positioned at the apex point centre between described two inner edges 13; Described two outsides 11 and two circular arc swords 12 intersect formation two arc blade tips 15, the mid point of the chisel edge 14 between described two inner edges 13 becomes unbearable sharp 16 of this apex point centre, in the projection of drill bit midplane 17, described midplane 17 is meant, along by drill bit axial line and the section parallel with two outsides 11, the symmetrical profile of parallel major cutting edge just describedly is meant in the projection of drill bit midplane 17, the apex point of drill bit up, the direction on vertical centering control plane 17 is carried out projection.Described circular arc sword 12 is that the arc sword divides bits angle ξ to be meant at the tangent line and the angle between the outside 11 of arc blade tip 15, described circular arc sword 12 is projected as line segment BD at the tangent line of arc blade tip 15 at midplane 17, described outside 11 is projected as line segment AB midplane 17, it is the angle of line segment BD and line segment AB that described arc sword divides bits angle ξ, and it is 140 °～160 ° that described arc sword divides bits angle ξ.Described circular arc sword 12 is that arc sword normal direction degree of depth h is meant to the vertical range farthest of the extended line of outside 11, described circular arc sword 12 is projected as arc section BC midplane 17, the extended line of described outside 11 is projected as line segment BE midplane 17, described arc sword normal direction degree of depth h is the farthest vertical range of arc section BC to line segment BE, and the diameter ratio of described arc sword normal direction degree of depth h and this drill bit is 0.02～0.03: 1.So just can be controlled at and divide bits when chip-flowing changes naturally, naturally fracture, form the figure six smear metal, drill bit is twined in the smear metal of avoiding drilling to produce, cooling fluid is injected smoothly, guaranteed that drill bit has enough coolings, thereby improved the durability of drill bit, improve operator safety, cleared up smear metal easily.
As preferably, it is 150 ° and described arc sword normal direction degree of depth h that described arc sword divides bits angle ξ and the ratio of the diameter d of this drill bit is 0.025: 1, and branch is considered to be worth doing, and better effects if naturally fractures.
Sharp angle 2 Φ of described outside 11 are 125 °～145 °, can help to control chip-flowing like this, form bigger arc sword and divide bits angle ξ, guarantee branch bits, chip breaking, and when sharp angle 2 Φ of described outside 11 are 135 ° best results.
The length L of described outside 11 with the ratio of the diameter d of this drill bit is: 0.20～0.30: 1, also consider drill bit master angle of cutting edge optimization and form the figure six smear metal and design, and when the ratio of the length L of described outside 11 and the diameter d of this drill bit is 0.25:1 best results.
The radius R of described circular arc sword 12 with the ratio of the diameter d of this drill bit is: 0.14～0.22: 1, help like this guaranteeing that the arc sword divides control circular arc sword 12 and 13 smooth connections of inner edge under the prerequisite of bits angle ξ, and be 0.18: 1 o'clock best results at the ratio of the radius R of circular arc sword 12 and the diameter d of this drill bit.
The sharpening of sword type of the present utility model has multiple mode.
1, adopts the CNC cutter sharpener, be converted into the programming of machine coordinates parameter by technology, realize processing by given parameter.
2, adopt drill point grinder, the Ni Zhifu drill blade milling machine of supplying on the market, be converted into the parameter that machine coordinates can be aligned by technology, realize processing by given parameter.
3, adopt easy frock clamp,, realize processing by the position of given parameter levelling anchor clamps and bistrique emery wheel.
More than three kinds of modes, this patent designer by the practice, prove all to reach designing requirement.Need to use coherent detection equipment behind the sharpening, control parameters precision and symmetry.
Claims (9)
1, the chip breaking of a kind of multiple-cutting-edge point is bored, comprise apex point part and targeting part, two main cutting edges of this apex point part ecto-entad respectively comprise outside (11), circular arc sword (12) and inner edge (13), are the chisel edge (14) that is positioned at the apex point centre between described two inner edges (13); Described two outsides (11) intersect formation two arc blade tips (15) with two circular arc swords (12), the mid point of the chisel edge (14) between described two inner edges (13) becomes the unbearable point (16) in this apex point centre, it is characterized in that: in drill bit midplane (17) projection, described circular arc sword (12) is that arc sword branch bits angles (ξ) are 140 °～160 ° at the tangent line and the angle between the outside (11) of arc blade tip (15); Described circular arc sword (12) is the arc sword normal direction degree of depth (h) and the ratio of the diameter (d) of this drill bit is 0.02～0.03: 1 to the vertical range farthest of the inside extended line of outside (11).
2, multiple-cutting-edge point according to claim 1 chip breaking is bored, and it is characterized in that: it is 150 ° that described arc sword divides bits angles (ξ).
3, multiple-cutting-edge point according to claim 1 chip breaking is bored, and it is characterized in that: the described arc sword normal direction degree of depth (h) is 0.025: 1 with the ratio of the diameter (d) of this drill bit.
4, multiple-cutting-edge point according to claim 1 chip breaking is bored, and it is characterized in that: the sharp angle of described outside (11) (2 Φ) is 125 °～145 °.
5, multiple-cutting-edge point according to claim 4 chip breaking is bored, and it is characterized in that: the sharp angle of described outside (11) (2 Φ) is 135 °.
6, multiple-cutting-edge point according to claim 1 chip breaking is bored, and it is characterized in that: the ratio of the diameter (d) of the length L of described outside (11) and this drill bit is: 0.20～0.30: 1.
7, multiple-cutting-edge point according to claim 6 chip breaking is bored, and it is characterized in that: the ratio of the diameter (d) of the length L of described outside (11) and this drill bit is: 0.25: 1.
8, multiple-cutting-edge point according to claim 1 chip breaking is bored, and it is characterized in that: the ratio of the diameter (d) of the radius R of described circular arc sword (12) and this drill bit is for being: 0.14～0.22: 1.
9, multiple-cutting-edge point according to claim 8 chip breaking is bored, and it is characterized in that: the ratio of the diameter (d) of the radius R of described circular arc sword (12) and this drill bit is for being: 0.18: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201655180U CN201267890Y (en) | 2008-09-28 | 2008-09-28 | Multi-edge nib chip-breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201655180U CN201267890Y (en) | 2008-09-28 | 2008-09-28 | Multi-edge nib chip-breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201267890Y true CN201267890Y (en) | 2009-07-08 |
Family
ID=40840469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201655180U Expired - Fee Related CN201267890Y (en) | 2008-09-28 | 2008-09-28 | Multi-edge nib chip-breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201267890Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007091A1 (en) * | 2011-07-11 | 2013-01-17 | 宁波华刃工具有限公司 | Universal pointed drill with multiple edges |
| CN103008735A (en) * | 2012-11-27 | 2013-04-03 | 大连经济技术开发区伊达工具有限公司 | PCD (pitch circle diameter) drill bit with chip breaker groove |
| CN107186251A (en) * | 2017-07-24 | 2017-09-22 | 江苏飞达钻头股份有限公司 | A kind of Double Tops wedge angle chip dividing drill |
-
2008
- 2008-09-28 CN CNU2008201655180U patent/CN201267890Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007091A1 (en) * | 2011-07-11 | 2013-01-17 | 宁波华刃工具有限公司 | Universal pointed drill with multiple edges |
| CN103008735A (en) * | 2012-11-27 | 2013-04-03 | 大连经济技术开发区伊达工具有限公司 | PCD (pitch circle diameter) drill bit with chip breaker groove |
| CN103008735B (en) * | 2012-11-27 | 2015-01-21 | 大连经济技术开发区伊达工具有限公司 | PCD (pitch circle diameter) drill bit with chip breaker groove |
| CN107186251A (en) * | 2017-07-24 | 2017-09-22 | 江苏飞达钻头股份有限公司 | A kind of Double Tops wedge angle chip dividing drill |
| CN107186251B (en) * | 2017-07-24 | 2023-09-05 | 江苏飞达钻头股份有限公司 | Double-center angle chip drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20120928 |