CN2487478Y - Swallow drill - Google Patents
Swallow drill Download PDFInfo
- Publication number
- CN2487478Y CN2487478Y CN 00250106 CN00250106U CN2487478Y CN 2487478 Y CN2487478 Y CN 2487478Y CN 00250106 CN00250106 CN 00250106 CN 00250106 U CN00250106 U CN 00250106U CN 2487478 Y CN2487478 Y CN 2487478Y
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- CN
- China
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- cutting edge
- cutting
- drill
- swallow
- drill bit
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- Expired - Fee Related
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Abstract
The utility model relates to a swallow drill belonging to a drilling tool in the machining field. The swallow drill is provided with an advanced cutting edge at the end face of a standard twist drill. The structure of the utility model is characterized in that: a cusp cutting edge, a fillet cutting edge, a cutting edge with three inclined planes and a cutting edge with chisel edge breadth being 20 form an interdependent integral forming structure. The utility model has the advantages of high-efficient cutting performance, flexible and labor-saving cutting, much longer service life of drill and convenient sharpening and forming; meanwhile, the utility model which is convenient for popularization and application and can easily drill difficult-to-machining materials promotes the development of drilling technique in the machining field.
Description
The drilling tool of field of machining under the utility model swallow formula drill bit.It is drilling tool efficient in the machining, long-lived, high-quality.
Swallow formula drill edge type development purpose and technical characterictic:
The utility model swallow formula drill bit purpose; Just provide a kind of new-type cutter, solve high strength, high hardness material processing to other part machining of engineering goods.
Utility model swallow formula drill edge type development process: technical background is at converted products hydraulic part housing cr12MOV, in the material of HRC32, adopt conventional fluted drill cutting edge type, the very high hardened layer of material production during drilling, make very quick-wearing of fluted drill cutting edge, and use the utility model swallow formula drill edge type, can be wear-resistant in cutting, overcome the generation hardened layer, its life-span improves exponentially than fluted drill cutting edge type.Processing practice also confirms: utility model swallow formula drill edge type is to 2cr13, LD10CS, and materials such as LY12 all have good cutting ability.
Succeeding in developing of swallow formula drill bit for solving new material machining, particularly high strength, high rigidity cutting of hardworking material processing, provides convenience.
I am engaged in machining and put into practice for many years, have accumulated Tool in Cutting processing experience.Further investigate in theory in Tool in Cutting, study drilling Processing Technology Development situation again, and developed utility model swallow formula drill bit.
The structure accompanying drawing front view of swallow formula drill bit explanation: 1, be the cutting edge type of wedge angle, 2, be the cutting edge type of chisel edge width=0,3, be the cutting edge type of fillet, 4, be the cutting edge type of three tapered planes.Because of machining material difference, the wedge angle of drill bit and fillet have the angle of regulation.
The explanation of swallow formula drill bit drawing:
Fig. 1 is a swallow formula drill bit front view;
2 φ are sharp angles of angular shape cutting edge.
2 φ 1 are the sharp angles of fillet shape cutting edge.
Main cutting edge is divided into two sections: AB section cutting edge, BO section cutting edge.
A point---bore core point O.
Swallow formula drill bit structure feature is 1 sharp 4 sword cutting edge types.
The main cutting edge back---promptly the 1st tapered plane constitutes relief angle a
1
Auxiliary back---the i.e. relief angle a of the 2nd tapered plane formation
2
The 3rd tapered plane web thinning makes the chisel edge anterior angle become r.
Fig. 2 is that sectional view is looked at swallow formula drill bit mansion:
The 1st, main cutting edge AB section and BO section.
The 2nd, assisted machining sword---i.e. the 2nd cutting edge.
The 3rd, main cutting edge back---i.e. the 1st tapered plane.
The 4th, auxiliary back---i.e. the 2nd tapered plane.
Core is bored in the incision of 5 the 3rd tapered planes, web thinning, and produce central point O, make chisel edge width=0.
The technical scheme of utility model swallow formula drill bit: be the cutting edge type that has the advanced person at the fluted drill end face of standard, it is characterized in that the cutting edge type of 1 sharp 4 swords.
Swallow formula drill bit Figure of description mark, its technical characterictic is: the cutting edge type of wedge angle, the cutting edge type of chisel edge width=0, the cutting edge type of fillet, the cutting edge type of three tapered planes is whole stereotyped structures of interdependence.
Swallow formula drill edge type structure technology scheme and feature thereof:
Swallow formula bit drills core is characterized in that the cutting edge of an angular shape, accounts for 1/3 of whole bit diameter.
The both sides of the brill core wedge angle of swallow formula drill bit is characterized in that the cutting edge of fillet shape.
Swallow formula drill edge major flank is characterized in that the cutting shape that is made of three tapered planes.
The 1st tapered plane that it is characterized in that of swallow formula drill bit becomes 1 °-15 ° with the cutting plane.
The 2nd tapered plane that it is characterized in that of swallow formula drill bit becomes 25 °-30 ° with the cutting plane.
The 3rd tapered plane that it is characterized in that of swallow formula drill bit becomes 50 °-55 ° with the cutting plane.
It is characterized in that the 1st tapered plane and the 2nd tapered plane intersect and just produce a sword of swallow formula drill bit---i.e. the 2nd cutting edge by the bit diameter center.
Core is bored in the 3rd tapered plane incision that it is characterized in that of swallow formula drill bit, and makes chisel edge width=0.
Swallow formula drill bit in machining, the technical solution problem:
Compare with the processing experience, directly perceived know from experience feel that swallow formula drill bit compares with the standard fluted drill, the drilling axial force reduces more than 1/2, cut very briskly, the also corresponding proportional reduction of the cutting moment of torque is more than 1/3, the also raising exponentially of the amount of feeding of holing.
The centering effect that forms of chisel edge width=0 o'clock institute is top, when a sharp contact workpiece material just begins real cutting, thereby significantly reduces the drilling drag.
Second cutting edge can play bifurcating chip action and chip breaking effect, and smear metal is discharged from chip pocket easily, and work in-process does not need to withdraw from drill bit, and just directly chip removal so save non-cutting time in producing, is enhanced productivity.Have second cutting edge and will significantly improve bit life, this sword has branch to consider to be worth doing, and chip breaking acts on well.
When the 3rd tapered plane incision is bored core and is become 50 °-55 ° with the cutting plane, significantly reduce the drilling axial force, bore core place cutting edge life-span height, three tapered plane sword types make in the bit cutting fine radiating condition is arranged, workpiece is cut at cryogenic conditions, and the aperture burr are little.
The sword type of wedge angle, its apex point one contact workpiece material just begins real machining, makes that drilling processing incision property is good, and processing is felt relieved, and stable in the machining, machining is very brisk.
The sword type of fillet makes drill bit intensity increase, and plays to bore on wedge angle sword type cutting basis and expands shear action, makes the drilling drag descend, the material of the various hard high-strengths of suitable processing.
Three tapered plane sword types make drill bit in machining, divide and consider to be worth doing, and chip breaking is good, and chip removal is good, and the machining radiating condition is good, make drill bit be in the cryogenic conditions cutting, and bit life significantly improves, and helps difficult-to-machine material is carried out machining.
The sword type of chisel edge width=0, make bit drills core chisel edge become one top, make to bore core place excellent cutting performance, cut brisk laborsaving, chip breaking good, chip removal good, bores core segment life-span height.
Swallow formula drill bit effect:
Significantly reduce the drilling drag, cut brisk laborsavingly, the cutting axial force reduces more than 1/2, and the also corresponding reduction of the cutting moment of torque is more than 1/3.
The 3-4 that can enhance productivity doubly.
The difficult-to-machine material of the various hard high-strengths of the brisk drilling of energy.
Can improve bit life 4-6 doubly.
Sharpening moulding easily is convenient to promote the use of, and has popularity on promoting.
Can enhance productivity the good economic benefit of extra earning for enterprise reduces processing cost.
Can in field of machining, promote the drilling technical development.
Claims (3)
1, a kind of name is called swallow formula drill bit, is that 1 sharp 3 cutting drill types with standard fluted drill cutting tip are split into new brill type, it is characterized in that: the cutting edge type of wedge angle, the cutting edge type of chisel edge width=0, the cutting edge type of fillet, the cutting edge type of three tapered planes is 1 sharp 4 cutting drill types of interdependence typing.
2, swallow formula drill bit according to claim 1 is characterized in that: boring core is the cutting edge of an angular shape, accounts for 1/3 of whole bit diameter, and the both sides of boring the core wedge angle are the cutting edges of fillet shape.
3, swallow formula drill bit according to claim 1, it is characterized in that: the cutting edge major flank is the cutting shape that is made of three tapered planes, the 1st tapered plane and the 2nd tapered plane intersect and just to produce a sword by the bit diameter center---i.e. the 2nd cutting edge, core is bored in the incision of the 3rd tapered plane, and makes chisel edge width=0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00250106 CN2487478Y (en) | 2000-09-12 | 2000-09-12 | Swallow drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00250106 CN2487478Y (en) | 2000-09-12 | 2000-09-12 | Swallow drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2487478Y true CN2487478Y (en) | 2002-04-24 |
Family
ID=33608370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00250106 Expired - Fee Related CN2487478Y (en) | 2000-09-12 | 2000-09-12 | Swallow drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2487478Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010148626A1 (en) * | 2009-06-24 | 2010-12-29 | Wang His Yuan | Self-drilling screw with two or more angles |
| CN102728873A (en) * | 2012-06-05 | 2012-10-17 | 江苏天工工具有限公司 | Washing and cooling narrow-plane drill bit |
| CN105033328A (en) * | 2015-07-30 | 2015-11-11 | 北京理工大学 | Self-centering micro drill bit without chisel edge |
| CN110521532A (en) * | 2019-09-30 | 2019-12-03 | 中南林业科技大学 | A kind of integrated rotating drill bit and Portable rotating drilling machine and butt breaking method |
-
2000
- 2000-09-12 CN CN 00250106 patent/CN2487478Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010148626A1 (en) * | 2009-06-24 | 2010-12-29 | Wang His Yuan | Self-drilling screw with two or more angles |
| CN102728873A (en) * | 2012-06-05 | 2012-10-17 | 江苏天工工具有限公司 | Washing and cooling narrow-plane drill bit |
| CN105033328A (en) * | 2015-07-30 | 2015-11-11 | 北京理工大学 | Self-centering micro drill bit without chisel edge |
| CN105033328B (en) * | 2015-07-30 | 2017-05-24 | 北京理工大学 | Self-centering micro drill bit without chisel edge |
| CN110521532A (en) * | 2019-09-30 | 2019-12-03 | 中南林业科技大学 | A kind of integrated rotating drill bit and Portable rotating drilling machine and butt breaking method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |