CN201579463U - Twist drill with multiple arc edges and multiple edge point - Google Patents
Twist drill with multiple arc edges and multiple edge point Download PDFInfo
- Publication number
- CN201579463U CN201579463U CN2009202744909U CN200920274490U CN201579463U CN 201579463 U CN201579463 U CN 201579463U CN 2009202744909 U CN2009202744909 U CN 2009202744909U CN 200920274490 U CN200920274490 U CN 200920274490U CN 201579463 U CN201579463 U CN 201579463U
- Authority
- CN
- China
- Prior art keywords
- sections
- sword
- arc
- straight
- point
- Prior art date
- 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
Images
Abstract
The utility model provides belongs to a twist drill with multiple arc edges and multiple edge point. Two or more than two sections of arc edges are arranged on two sections of main cutting edges of the twist drill respectively; and two sections of main cutting edges comprise two sections of outer straight edges (4), two sections of outer arc edges (5), two sections of central edges (6), two sections of inner circular arc edges (7); two sections of inner straight edges (8) and a section of horizontal edge (9) as well as two outer points (3), two central points (2) and a coring point (1). The utility model has the benefits that except for all the advantages of the ordinary multi-edge point twist drill of which only one arc edge is reserved on each side, the twist drill provided by the utility model overcomes the defect that straw hat-shaped round drilled solids are stuck to the drill points when the ordinary multi-edge point twist drill bores are drilled, and if the straw hat-shaped round drilled solids are not cleaned up in time, the second bore is precluded from being drilled. The utility model not only has better centering and solids-removing effects and higher drilling quality, but also can smoothly and continuously drill multi-layer stacked materials.
Description
Affiliated technical field:
The utility model is to belong to a kind of fluted drill, has two or more many circular arcs sword multiple-cutting-edge point fluted drills on specifically a kind of each outside.
Background technology:
Existing more than 100 year of fluted drill invention, two helicla flutes, two main cutting edge angles be 118 ° fluted drill as world standard fluted drill brill type, still use in a large number at present in the whole world." Ni Zhifu " of China be in nineteen fifty-three invention, and at " Ni Zhifu " drill bit of typing in 1967, after rename as " Ni Zhifu drill " and mean masses' crystallization of wisdom, be called multiple-cutting-edge point fluted drill this century again.
The distinguishing feature of multiple-cutting-edge point fluted drill is tricuspid seven swords, and promptly it has two sections outer straight swords, two sections circular arc swords, straight sword in two sections, one section chisel edge.
Thereby it is respectively to grind the cutting edge that a crescent forms the approximate circle arc on two sections main cutting edges of standard fluted drill, and thereby web thinning respectively forms one section outer straight sword, one section circular arc sword, straight sword in one section, the chisel edge length mill is short, highly reduce, be 1/4th of common fluted drill chisel edge length.Unbearable cusp height mill is low and form three points again, promptly infiltrates the blade tip on point and both sides.
Multiple-cutting-edge point fluted drill is felt relieved, and the drilling resistance is little, the drilling efficiency height, and the drill bit durability increases substantially, and these are proved in the practice of multiple reference book and decades repeatedly.
But its shortcoming also is unique, and promptly it can produce a circle when hole drill is logical, the drilling cuttings of similar straw hat shape, and usually be bonded on the apex point, when boring stainless sheet steel, this kind phenomenon is particularly serious.If untimely removing, it will hinder bores next hole, is in particular in: can't feel relieved, the round bur bits rotate simultaneously with drill bit, and the drilling resistance strengthens, and is difficult to drilling.
Unmanned in decades this difficult problem that solves.
Can invent a kind of whole advantages of multiple-cutting-edge point fluted drill that both kept, can overcome the fluted drill of its original shortcoming again, be that the fluted drill research of multiple-cutting-edge point is engaged in the whole world and the people that produces wants the difficult problem that solves for many years always.
Summary of the invention:
The purpose of this utility model provides a kind of many circular arcs sword multiple-cutting-edge point fluted drill.
By being 135 ° ± 25 ° at sharp angle, relief angle is the circular arc sword more than two sections or two sections that grinds symmetry on two sections main cutting edges of common fluted drill of 10 ° ± 3 ° respectively, thereby form circular arc sword and a plurality of apex point more than two sections or two sections, thereby when boring, form multistage and divide bits, multistage centering, the drilling that it produces make a concerted effort to make straw hat shape round bur bits can not be bonded on the apex point, when boring multilayer stack metal material, the round bur bits that produced also easily break, and do not hinder and continue boring.It is the many circular arcs sword multiple-cutting-edge point fluted drill that has overcome former multiple-cutting-edge point fluted drill inherent shortcoming fully.
The technical scheme in the invention for solving the technical problem is:
Circular arc sword more than two sections or two sections is respectively arranged on two sections main cutting edges of described fluted drill.
Described two sections main cutting edges are by straight sword and one section chisel edge and two outer points in the circular arc sword in the sword in the two sections outer straight swords, two sections external arc swords, two sections, two sections, two sections, two Tipping Centers, and a unbearable point is formed.
Described two sections main cutting edges are by two sections outer straight swords, straight sword and one section chisel edge and two outer points in the circular arc sword in the two sections external arc swords, two sections, two sections, and two Tipping Centers, a unbearable point is formed.
Described two sections main cutting edges are by circular arc sword in two sections, straight sword and one section chisel edge and two outer points in the circular arc sword in the sword in the two sections outer straight swords, two sections external arc swords, two sections, two sections, two sections, and two Tipping Centers, point in two, a unbearable point is formed.
Bit diameter is d, and outer straight sword length is 0.03d-0.15d; The apex point height is 0.08d-0.2d; The sharp angle of two sections outer straight tooth shape one-tenth is 110 °-160 °, and relief angle is 8 °-14 °; External arc sword length is 0.03d-0.15d, and relief angle is 10 ° ± 3 °; Middle cutter length is 0.01d-0.05d; Interior circular arc edge clearance angle is 12 ° ± 3 °; Interior circular arc sword is a straight line sword by unbearable part; The sharp angle that straight tooth shape becomes in two sections is 110 °-160 °; Chisel edge length is 0.05mm-0.35mm.
The beneficial effects of the utility model are:
Except that keeping every limit only whole advantages of the common multiple-cutting-edge point fluted drill of a circular arc sword, it overcome common multiple-cutting-edge point fluted drill hole drill when logical straw hat shape round bur bits be bonded at defective on the apex point, as untimely removing, will hinder second hole of brill.The utility model is not only felt relieved, and divides the bits performance better, and drilling quality is better, and can successfully bore multilayer stack material continuously.
Description of drawings
Followingly in conjunction with the accompanying drawings and embodiments the utility model is further specified
Fig. 1 is the structure chart of the utility model five points 11 swords;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the structure chart of the utility model five sharp nine swords;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the structure chart of the utility model seven points 13 swords;
Fig. 6 is the vertical view of Fig. 5.
The specific embodiment:
Circular arc sword more than two sections or two sections is respectively arranged on two sections main cutting edges of described fluted drill.
Described two sections main cutting edges are by two sections outer straight swords 4, two sections external arc swords 5, sword 6 in two sections, circular arc sword 7 in two sections, straight sword 8 and one section chisel edge 9 and 2, one unbearable points 1 of 3, two Tipping Centers of two outer points are formed in two sections.
Described two sections main cutting edges are made up of straight sword 8 in the circular arc sword in two sections outer straight 4, two sections external arc swords of sword 5, two sections 7, two sections and one section chisel edge 9 and 2, one unbearable points 1 of 3, two Tipping Centers of two outer points.
Described two sections main cutting edges are by circular arc sword 10 in two sections, two sections outer straight swords 4, two sections external arc swords 5, sword 6 in two sections, circular arc sword 7 in two sections, straight sword 8 and one section chisel edge 9 and two outer points 3 in two sections, 11, one unbearable points 1 of point are formed in 2, two of two Tipping Centers.
Bit diameter is d, and outer straight sword 4 length are 0.1d; The high h of apex point is 0.1d; Sharp angle 2 φ of two sections outer straight sword 4 formation are 135 °, and relief angle afc is 8 °; External arc sword 5 length are 0.1d, and relief angle aRc is 10 °; Middle cutter 6 length are 0.03d; Interior circular arc sword 7 relief angle aRc are 12 °; Interior circular arc sword 7 is a straight line sword by unbearable part; Sharp angle 2 φ that straight sword 8 forms in two sections
1It is 110 °; Chisel edge 9 length b ψ are 0.05mm.
Claims (5)
1. many circular arcs sword multiple-cutting-edge point fluted drill is characterized in that:
Circular arc sword more than two sections or two sections is respectively arranged on two sections main cutting edges of described fluted drill.
2. many circular arcs sword multiple-cutting-edge point fluted drill according to claim 1 is characterized in that:
Described two sections main cutting edges are by straight sword (8) and one section chisel edge (9) and two outer sharp (3) in the circular arc sword (7) in the sword (6) in the two sections outer straight swords (4), two sections external arc swords (5), two sections, two sections, two sections, two Tipping Centers (2), a unbearable point (1) is formed.
3. many circular arcs sword multiple-cutting-edge point fluted drill according to claim 1 is characterized in that:
Described two sections main cutting edges are by two sections outer straight swords (4), straight sword (8) and one section chisel edge (9) and two outer points (3) in the circular arc sword (7) in the two sections external arc swords (5), two sections, two sections, two Tipping Centers (2), a unbearable point (1) composition.
4. many circular arcs sword multiple-cutting-edge point fluted drill according to claim 1 is characterized in that:
Described two sections main cutting edges are by circular arc sword (10) in two sections, straight sword (8) and one section chisel edge (9) and two outer sharp (3) in the circular arc sword (7) in the sword (6) in the two sections outer straight swords (4), two sections external arc swords (5), two sections, two sections, two sections, two Tipping Centers (2), point (11) in two, a unbearable point (1) is formed.
5. according to the described arbitrary many circular arcs sword multiple-cutting-edge point fluted drill of claim 1-4, it is characterized in that:
Bit diameter is d, and outer straight sword (4) length is 0.03d-0.15d; Apex point height (h) is 0.08d-0.2d; The sharp angle (2 φ) of two sections outer straight sword (4) formation is 110 °-160 °, and relief angle (afc) is 8 °-14 °; External arc sword (5) length is 0.03d-0.15d, and relief angle (aRc) is 10 ° ± 3 °; Middle cutter (6) length is 0.01d-0.05d; Interior circular arc sword (7) relief angle (aRc) is 12 ° ± 3 °; Interior circular arc sword (7) is a straight line sword by unbearable part; Sharp angle (2 φ that straight sword (8) forms in two sections
1) be 110 °-160 °; Chisel edge (9) length (b ψ) is 0.05mm-0.35mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202744909U CN201579463U (en) | 2009-12-04 | 2009-12-04 | Twist drill with multiple arc edges and multiple edge point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202744909U CN201579463U (en) | 2009-12-04 | 2009-12-04 | Twist drill with multiple arc edges and multiple edge point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201579463U true CN201579463U (en) | 2010-09-15 |
Family
ID=42721456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202744909U Expired - Fee Related CN201579463U (en) | 2009-12-04 | 2009-12-04 | Twist drill with multiple arc edges and multiple edge point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201579463U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9731358B2 (en) | 2013-06-06 | 2017-08-15 | Milwaukee Electric Tool Corporation | Step drill bit |
| US11273501B2 (en) | 2018-04-26 | 2022-03-15 | Milwaukee Electric Tool Corporation | Step drill bit |
-
2009
- 2009-12-04 CN CN2009202744909U patent/CN201579463U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9731358B2 (en) | 2013-06-06 | 2017-08-15 | Milwaukee Electric Tool Corporation | Step drill bit |
| US10252351B2 (en) | 2013-06-06 | 2019-04-09 | Milwaukee Electric Tool Corporation | Step drill bit |
| US10695845B2 (en) | 2013-06-06 | 2020-06-30 | Milwaukee Electric Tool Corporation | Step drill bit |
| USD936117S1 (en) | 2013-06-06 | 2021-11-16 | Milwaukee Electric Tool Corporation | Step drill bit |
| US11273501B2 (en) | 2018-04-26 | 2022-03-15 | Milwaukee Electric Tool Corporation | Step drill bit |
| US11691203B2 (en) | 2018-04-26 | 2023-07-04 | Milwaukee Electric Tool Corporation | Step drill bit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105642972B (en) | One kind drills and reams ream integrated tool | |
| CN105772809B (en) | A kind of manufacturing method of drill bit and drill bit | |
| CN102198535A (en) | Combined composite blade composite drilling and milling cutter | |
| CN201455362U (en) | Multiple edge point sheet twist drill with vertical milling knife-like outer edge, outer edge sharp angle of 200 degrees and outer edge lateral R-shaped edge | |
| CN201579463U (en) | Twist drill with multiple arc edges and multiple edge point | |
| CN201295785Y (en) | Multi-point thin-plate twist drill with a slotting-cutter-shaped outer edge and with 120 degrees sharp angle of the outer edge | |
| CN210254406U (en) | Linear type three-point-fine tooth-shaped drilling and milling composite cutter | |
| CN202176265U (en) | Polycrystalline diamond compact (PDC) drill | |
| CN101862846A (en) | Integral hard alloy scaled drill | |
| CN209736719U (en) | Drilling and milling composite cutter with dovetail serrations for carbon fiber composite material | |
| CN202970487U (en) | Long gauge bidirectional-drilling PDC drill bit | |
| CN102441697A (en) | Combined composite drill and processing technology thereof | |
| CN207930031U (en) | A kind of hard alloy twist drill with four plane F types | |
| CN212665004U (en) | Milling cutter | |
| CN203961797U (en) | Combination tooth polycrystalline diamond compact bit | |
| CN207479674U (en) | A kind of drill bit for processing superhard material | |
| CN201720500U (en) | Machining cutter for drilling small-diameter and flat-bottom blind hole | |
| CN202199807U (en) | Hollow drill head | |
| CN206779528U (en) | A kind of indexable insert tip, throw away tip for shallow hole drilling | |
| CN208083480U (en) | A kind of composite polycrystal-diamond | |
| CN206009948U (en) | A kind of jackrod structure of drill bit | |
| CN202527754U (en) | Left-rotation drill bit | |
| CN206028818U (en) | Drill | |
| CN211221156U (en) | High-hardness alloy drill bit convenient for wood slotting | |
| CN207615714U (en) | Boring drill bit on a kind of slope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20100915 Termination date: 20161204 |