CN2784115Y - Position-changing milling tool - Google Patents
Position-changing milling tool Download PDFInfo
- Publication number
- CN2784115Y CN2784115Y CN 200520090602 CN200520090602U CN2784115Y CN 2784115 Y CN2784115 Y CN 2784115Y CN 200520090602 CN200520090602 CN 200520090602 CN 200520090602 U CN200520090602 U CN 200520090602U CN 2784115 Y CN2784115 Y CN 2784115Y
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- CN
- China
- Prior art keywords
- blade
- cutter hub
- cutting edge
- cutter
- utility
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- Expired - Fee Related
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Abstract
The utility model relates to an indexable milling cutter which belongs to a metal cutting tool. The utility model comprises a cutter body and blades, wherein the blades are fixed on the cutter body through a pressure plate, screws, etc., each side of an upper and a lower surfaces of each blade is provided with a cutting edge, and the upper and the lower surfaces are mutually perpendicular to each lateral surface. A radial negative rake angle alpha is formed between each blade and a centerline of the cutter body, an axial negative rake angle beta is formed between each blade and the cutter body, and an outer roundness regulating and compensating angle gamma is also formed between each blade and the cutter body. The cutter can fully utilize the other surface of the indexable blade, after each cutting edge of one surface is blunt, the blade is turned over so that the cutting edge of the other surface is used, therefore material cost is saved. Because each cutting edge of the blade of the utility model is not provided with a back angle, the utility model is more shock-resistant, angles are not easily dropped, and the utility model can cut at a high speed.
Description
Technical field
The utility model belongs to metal-cutting machine tool, particularly a kind of indexable milling cutter.
Background technology
Its cutting edge of indexable milling cutter tool that extensively adopts all has relief angle at present, because the restriction of relief angle is arranged, so can only use the cutting edge on the blade front, the another side of blade does not but utilize.Because the cutting edge relief angle of blade is an acute angle, so not shock-resistant, when arrisdefect was big, this cutting edge of generally just can not refacing again caused waste again.
Summary of the invention
Given this, the utility model provides the blade two sides all can make full use of, and is shock-resistant, saves the indexable milling cutter of material.
The utility model purpose realizes by following scheme: a kind of indexable milling cutter, comprise cutter hub and blade, blade is fixed on the cutter hub by pressing plate and housing screw etc., characteristics are that each limit of each cutter blade upper and lower surfaces all has cutting edge, vertical mutually between upper and lower surfaces and each side, promptly so-called right angle blade.Form radially negative rake α between blade and the cutter hub center line, form axial negative rake β between blade and the cutter hub, also have an outer circularity to regulate offset angle γ between blade and cutter hub, promptly place the inclination γ angle, bottom surface of blade on the cutter hub, the two ends of working cutting edge are remained on the same cylindrical of cutter hub.
Because cutter blade is the right angle blade, if this blade is loaded on the common milling cutter body, cutting edge has not had relief angle, is can not produce cutting power.Therefore the utility model changes the structure of cutter hub: promptly form radially negative rake α between blade and the cutter hub center line, make milling cutter form the relief angle θ that can cut; Form axial negative rake β between blade and the cutter hub, make milling cutter form the relief angle ε that can cut.So just make each cutting edge of two faces of this kind blade all produce cutting power.When each bite of a face of blade with after blunt, again blade is turned, use the cutting edge of another side.
Cutter hub of the present utility model is owing to along the axis angle [alpha] angle that tilts, make that its cylindrical bus is more and more far away from center cutter, if process the perpendicularity requirement of consequently not satisfying workpiece to be machined by this.Therefore, need an angle compensation, promptly outer circularity is regulated offset angle γ.The angle γ angle that tilted, the bottom surface of therefore placing blade on the cutter hub of the present utility model remains on the same cylindrical of cutter hub the two ends of working cutting edge, to guarantee the perpendicularity requirement of institute's processing work.Outer circularity is regulated offset angle γ and is changed according to the variation of the excircle dimension of cutter, blade size, each angle.
For making the loading and unloading blade more convenient laborsaving, below said pressing plate, preferably establish one and eject rag iron spring.
The utlity model has following advantage: (1) the utility model can also make full use of the another side of indexable insert tip, throw away tip, saves material cost greatly.(2) because each cutting edge of the utility model blade does not have relief angle, thus more shock-resistant, be difficult for arrisdefect, can high-speed cutting.
Description of drawings:
Fig. 1 is the utility model structural representation;
Fig. 2 is that the Y of Fig. 1 is to structural representation;
Fig. 3 is that the X of Fig. 1 is to structural representation;
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is further described:
Cutter as shown in the figure is an indexable milling cutter, comprises cutter hub 1 and blade 3, and knife bar 2 is structure as a whole with cutter hub 1.The position that 3 fixed blades are arranged on the cutter hub 1 is furnished with 3 indexable insert tip, throw away tips, and blade 3 is a triangular blade, and each blade 3 has up and down two planes and 3 sides, and is vertical mutually between two planes and each side up and down.All there is cutting edge on each limit of the upper and lower surfaces of each blade, totally 6 cutting edges.Blade by pressing plate 4, eject rag iron spring 6 and in hexagonal housing screw 5 be fixed on the cutter hub, eject rag iron spring 6 below pressing plate 4, be located on the cutter hub in the corresponding aperture.Form radially negative rake α between blade and the cutter hub center line, make milling cutter form the relief angle θ of the identical size that can cut; Form axial negative rake β between blade and the cutter hub, make milling cutter form the relief angle ε of the identical size that can cut.Also have an outer circularity to regulate offset angle γ between blade and cutter hub, promptly place very little angle γ angle of direction inclination from inside to outside, bottom surface of blade on the cutter hub, the ends A B of working cutting edge is remained on the same cylindrical of cutter hub.
Claims (2)
1, a kind of indexable milling cutter, comprise cutter hub (1) and blade (3), blade (3) is fixed on the cutter hub (1) by pressing plate (4) and housing screw (5) etc., all there is cutting edge on each limit that it is characterized in that each blade (1) upper and lower surfaces, vertical mutually between upper and lower surfaces and each side, one negative rake α is radially arranged between each blade and the cutter hub center line, one axial negative rake β is arranged between blade and the cutter hub, also have an outer circularity to regulate offset angle γ between blade and cutter hub, be the inclination γ angle, bottom surface of placing blade on the cutter hub, the ends A B of working cutting edge is remained on the same cylindrical of cutter hub.
2, milling cutter according to claim 1 is characterized in that being provided with ejection rag iron spring (6) below said pressing plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520090602 CN2784115Y (en) | 2005-04-26 | 2005-04-26 | Position-changing milling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520090602 CN2784115Y (en) | 2005-04-26 | 2005-04-26 | Position-changing milling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2784115Y true CN2784115Y (en) | 2006-05-31 |
Family
ID=36771098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520090602 Expired - Fee Related CN2784115Y (en) | 2005-04-26 | 2005-04-26 | Position-changing milling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2784115Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728883A (en) * | 2012-07-06 | 2012-10-17 | 薛红伟 | Milling cutter device |
| CN105345115A (en) * | 2015-12-02 | 2016-02-24 | 北京星航机电装备有限公司 | Negative rake milling cutter for milling carbon fiber enhanced silicon carbide ceramic matrix (C/Si) composite materials |
-
2005
- 2005-04-26 CN CN 200520090602 patent/CN2784115Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728883A (en) * | 2012-07-06 | 2012-10-17 | 薛红伟 | Milling cutter device |
| CN105345115A (en) * | 2015-12-02 | 2016-02-24 | 北京星航机电装备有限公司 | Negative rake milling cutter for milling carbon fiber enhanced silicon carbide ceramic matrix (C/Si) composite materials |
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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: 20060531 |