CN101239405B - Bulb slotting cutter - Google Patents
Bulb slotting cutter Download PDFInfo
- Publication number
- CN101239405B CN101239405B CN2008103005196A CN200810300519A CN101239405B CN 101239405 B CN101239405 B CN 101239405B CN 2008103005196 A CN2008103005196 A CN 2008103005196A CN 200810300519 A CN200810300519 A CN 200810300519A CN 101239405 B CN101239405 B CN 101239405B
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- sword
- bulb
- ball
- edge
- end mill
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Abstract
The invention discloses a bulb end milling cutter comprising a bulb part and a cylindrical/conical part. An S-shaped bulb edge (1) of the bulb part and a rear tool face (3) of the bulb edge connect respectively with a spiral circumferential edge (5) of the cylindrical/conical part, a front tool face (6) of the circumferential edge, and the rear tool face of the circumferential. A rather big positive front angle is provided at the front tool face (2) of the bulb edge, and a narrow edge flank (9) is provided near the cutting edge of the bulb edge front tool face; the groove bottom curve of the bulb part spiral groove (4) is a lead-variable scroll, the groove bottom curve of the spiral groove (8) of the cylindrical bulb end milling cutter the cylindrical part is a axis protecting scroll, and the groove bottom curve of the spiral groove (8) of the conical bulb end milling cutter the conical part is a conical scroll. The invented milling cutter is provided with characteristic of stable milling process and smooth chip removal, the processed products thereof have high precision and good quality, and the milling tool can be used broadly.
Description
Technical field
The present invention relates to a kind of milling tool, particularly a kind of ball end mill that is used for Digit Control Machine Tool processing.
Background technology
Ball end mill is the new structure cutter a kind of commonly used of Digit Control Machine Tool processed complex curved surface, has a wide range of applications in industries such as mould manufacturing, automobile making, space flight and aviation, the manufacturings of telecommunications product.Popular in the market ball end mill of a great variety comprises monoblock type and clamped ball end mill.
The rake face grinding processing method of present being seen monoblock type ball end mill mainly contains two classes: a class is to adopt four-axle linked following simple grinding equipment to carry out grinding to form, its ball sword is the flush cut sword, ball sword rake face is negative rake or part negative rake, and ball sword (being ball head point cutting edge) rake face and Zhou Ren (are the circumferential section cutting edge, the circumferential section of cylindrical ballnosed end mill cutter is a cylinder, the circumferential section of conical ball end mill is a circular cone) rake face is not smooth connection, such rake face ball end mill is in process, easily produce vibration, cut not steady, phenomenons such as chip removal is not smooth, with its product processed precision and second-rate, use occasion is restricted; Another kind of employing five-axle linkage machine tool carries out grinding, the ball end mill of such device fabrication has comparatively reasonably tooth shape and geometric angle distribution, the processing characteristics of cutter is good, but the equipment design is complicated, device fabrication required precision height, the equipment price height has increased the cutter manufacturing cost.
What clamped ball end mill adopted is special rake face blade, and clamping is on the cutter hub of ball end mill.The blade of ball end mill adopts the powder metallurgical technique compacting to form mostly, can be divided into plane and non-planar two classes.Imperfect manufacture and monoblock type plane rake face rose cutter that the clamped ball end mill of plane blade exists are similar; The clamped ball end mill rake face of non-planar blade, purposes difference, processing conditions difference, manufacturer's difference differ greatly.
Summary of the invention
Technical problem to be solved by this invention provide a kind of in process, be difficult for to produce vibration, working angles steadily, chip removal ball end mill smoothly, thereby improve precision and quality with its product processed.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of ball end mill.Its formation comprises bulb part and column part (perhaps tapered segment), knife face and ball sword helicla flute after described bulb partly has S shape ball sword by the centre of sphere, ball sword rake face, ball sword; Knife face and all sword helicla flutes after described column part (perhaps tapered segment) has helical circumferential sword, all sword rake faces, Zhou Ren; Described S shape ball sword is connected with the helical circumferential sword, ball sword rake face and all smooth connections of sword rake face, and knife face is connected with knife face behind the Zhou Ren behind the ball sword, and ball sword helicla flute is connected with all sword helicla flutes; Described ball cutlery has big positive rake angle, is little size distribution from inside to outside, and promptly less near the top, the middle part is bigger, and is less near circumferential section.
In the above-mentioned ball end mill, near cutting edge a very narrow land is arranged partly, form chamfered edge at described ball sword rake face, the width of this chamfered edge changes with the variation of grinding parameter, is little size distribution from inside to outside, and is promptly less near the top, the middle part is bigger, less near circumferential section.
In the aforesaid ball end mill, bulb part bottom land curve and column part (or tapered segment) bottom land curve be smooth the connection near bulb and cylinder (perhaps circular cone) handing-over, bulb part bottom land curve is that surface of revolution becomes the helical pitch helix, cylindrical ballnosed end mill cutter column part bottom land curve is for protecting the axis helix, and conical ball end mill tapered segment bottom land curve is a conical spiral.
Compared with prior art, ball cutlery of the present invention has good S shape, and the tooth shape amplitude is bigger, helps the steady of Tool in Cutting process; The anterior angle of its ball sword rake face is big positive rake angle, be little size distribution from inside to outside, promptly less near the top, the middle part is bigger, less near circumferential section, and a very narrow cutting edge band is partly arranged near cutting edge at ball sword rake face, form chamfered edge, the width difference of the different chamfered edges of grinding parameter, width is little size distribution from inside to outside, and is promptly less near the top, the middle part is bigger, less near circumferential section, feasible so higher with its product processed precision and quality, use occasion is wider.Curve can better be connected with cylinder (or circular cone) interface portion at bulb with all sword rake faces smooth the connection with realization ball sword rake face near bulb and circumference handing-over at the bottom of bulb part bottom land curve of the present invention and the circumferential groove, helps smooth chip removal.Rake face moulding of the present invention can be used for monoblock type ball end mill, clamped ball end mill, also can be used for the manufacturing of cylindrical ballnosed end mill cutter and conical ball end mill.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of S shape ball sword of the present invention;
Fig. 3 partly holds the architectural feature schematic diagram of section for bulb of the present invention;
Fig. 4 is the variation schematic diagram of rake face cutting edge band of the present invention;
Fig. 5 is the ball sword rake face of cylindrical ballnosed end mill cutter of the present invention and the connection diagram of all sword rake faces.
The specific embodiment
Embodiments of the invention 1: as shown in Figure 1, comprise bulb part and column part, knife face 3 and ball sword helicla flute 4 after bulb partly has S shape ball sword 1 by the centre of sphere, ball sword rake face 2, ball sword; Knife face 7 and all sword helicla flutes 8 after column part has helical circumferential sword 5, all sword rake faces 6, Zhou Ren; S shape ball sword 1 is connected with helical circumferential sword 5, ball sword rake face 2 and all 6 smooth connections of sword rake face, knife face 3 is connected with knife face 7 behind the Zhou Ren behind the ball sword, ball sword helicla flute 4 is connected with all sword helicla flutes 8, the anterior angle of ball sword rake face 2 is a positive rake angle, is little size distribution from inside to outside, and is promptly less near the top, the middle part is bigger, and is less near circumferential section; Near cutting edge a very narrow land 9 is arranged partly at ball sword rake face 2, form chamfered edge (seeing accompanying drawing 4), the width of this chamfered edge changes with the variation of grinding parameter, be little size distribution from inside to outside, promptly less near the top, the middle part is bigger, less near circumferential section.Near curve smooth connection with realization ball sword rake face 2 handing-over of bulb and circumference can better be connected (seeing accompanying drawing 5) at bulb with all sword rake faces 6 at the bottom of the circumferential groove of bulb part bottom land curve and cylinder with the cylinder interface portion.Bulb part bottom land curve is that surface of revolution becomes the helical pitch helix, cylindrical ballnosed end mill cutter column part bottom land curve is for protecting the axis helix, the back knife face of ball end mill is with usually finding is the same, and it is according to a bit forming with the tangent principle grinding of the periphery of emery wheel on arbitrary moment cutting edge (ball sword, Zhou Ren).
Embodiments of the invention 2: comprise bulb part and tapered segment, knife face 3 and ball sword helicla flute 4 after bulb partly has S shape ball sword 1 by the centre of sphere, ball sword rake face 2, ball sword; Knife face 7 and all sword helicla flutes 8 after tapered segment has helical circumferential sword 5, all sword rake faces 6, Zhou Ren; S shape ball sword 1 is connected with helical circumferential sword 5, ball sword rake face 2 and all 6 smooth connections of sword rake face, knife face 3 is connected with knife face 7 behind the Zhou Ren behind the ball sword, ball sword helicla flute 4 is connected with all sword helicla flutes 8, the anterior angle of ball sword rake face 2 is a positive rake angle, is little size distribution from inside to outside, and is promptly less near the top, the middle part is bigger, and is less near circumferential section; Near cutting edge a very narrow land 9 is arranged partly at ball sword rake face 2, form chamfered edge, the width of this chamfered edge changes with the variation of grinding parameter, is little size distribution from inside to outside, and promptly less near the top, the middle part is bigger, less near circumferential section.Near curve smooth connection with realization ball sword rake face 2 handing-over of bulb and circumference can better be connected with the circular cone interface portion at bulb with all sword rake faces 6 at the bottom of the circumferential groove of bulb part bottom land curve and circular cone.Conical ball end mill tapered segment bottom land curve is a conical spiral.The back knife face of ball end mill is with usually finding is the same, and it is according to a bit forming with the tangent principle grinding of the periphery of emery wheel on arbitrary moment cutting edge (ball sword, Zhou Ren).
Claims (1)
1. ball end mill, its formation comprises bulb part and cylinder/tapered segment, it is characterized in that: knife face (3) and ball sword helicla flute (4) after described bulb partly has S shape ball sword (1) by the bulb top center, ball sword rake face (2), ball sword; Knife face (7) and all sword helicla flutes (8) after described cylinder/tapered segment has helical circumferential sword (5), all sword rake faces (6), Zhou Ren; Described S shape ball sword (1) is connected with helical circumferential sword (5), ball sword rake face (2) and smooth connection of all sword rake faces (6), and knife face behind the ball sword (3) is connected with knife face (7) behind the Zhou Ren, and ball sword helicla flute (4) is connected with all sword helicla flutes (8); The anterior angle of described ball sword rake face (2) is a positive rake angle, is little size distribution from inside to outside, and promptly less near the top, the middle part is bigger, and is less near circumferential section; Near cutting edge a very narrow land (9) is arranged partly at described ball sword rake face (2), form chamfered edge, the width of this chamfered edge changes with the variation of grinding parameter, be little size distribution from inside to outside, promptly less near the top, the middle part is bigger, less near circumferential section; Bulb part bottom land curve and cylinder/tapered segment bottom land curve be smooth the connection near bulb and cylinder/circular cone handing-over, bulb part bottom land curve is that surface of revolution becomes the helical pitch helix, cylindrical ballnosed end mill cutter column part bottom land curve is for protecting the axis helix, and conical ball end mill tapered segment bottom land curve is a conical spiral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103005196A CN101239405B (en) | 2008-03-11 | 2008-03-11 | Bulb slotting cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103005196A CN101239405B (en) | 2008-03-11 | 2008-03-11 | Bulb slotting cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101239405A CN101239405A (en) | 2008-08-13 |
| CN101239405B true CN101239405B (en) | 2011-05-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008103005196A Expired - Fee Related CN101239405B (en) | 2008-03-11 | 2008-03-11 | Bulb slotting cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101239405B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239406B (en) * | 2008-03-11 | 2011-03-16 | 贵州大学 | Bulb slotting cutter and its abrasive machining four-shaft linkage equipment |
| JP5060626B2 (en) * | 2011-03-03 | 2012-10-31 | 日立ツール株式会社 | Replaceable blade end mill |
| CN102328126B (en) * | 2011-09-22 | 2013-01-23 | 山东理工大学 | Small helix-edge ball-end milling cutter |
| CN102328127B (en) * | 2011-09-22 | 2013-04-10 | 山东理工大学 | Superfine tapered ball end milling cutter |
| JP5842708B2 (en) * | 2012-03-29 | 2016-01-13 | 三菱マテリアル株式会社 | Ball end mill |
| CN106270701B (en) * | 2016-10-24 | 2018-10-09 | 上海冠钻精密工具有限公司 | High speed sculpture single-edge ball milling cutter |
| CN107052914B (en) * | 2016-12-26 | 2019-10-25 | 科德数控股份有限公司 | A kind of efficient removing method of rose cutter machined trace |
| CN112313024B (en) * | 2018-06-22 | 2023-06-02 | Osg株式会社 | Cone end mill |
| CN110064788A (en) * | 2019-05-22 | 2019-07-30 | 汇专绿色工具有限公司 | A kind of cutter head structure and cutting tool |
-
2008
- 2008-03-11 CN CN2008103005196A patent/CN101239405B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101239405A (en) | 2008-08-13 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20180311 |
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| CF01 | Termination of patent right due to non-payment of annual fee |