JPS6222014U

JPS6222014U -

Info

Publication number: JPS6222014U
Application number: JP1985112820U
Authority: JP
Priority date: 1985-07-23
Filing date: 1985-07-23
Publication date: 1987-02-10
Also published as: KR900011046Y1; JPH031137Y2; KR870001913U

Description

[Brief explanation of the drawing]

第１図〜第３図はこの考案のポジテイブスロー
アウエイチツプの一実施例を示すもので、第１図
は正面図、第２図は第１図の―線視側面図、
第３図は第１図の―線視側面図、第４図〜第
８図は上記チツプをエンドミル本体に装着した場
合の切削状態を示すもので、第４図は正面図、第
５図は側面図、第６図は底面図、第７図は第６図
のＡ部拡大図、第８図は第４図における加工面の
断面拡大図、第９図〜第１１図はこの考案の他の
実施例を示すもので、第９図は正面図、第１０図
は第９図の―線視側面図、第１１図は第９図
の―線視側面図。第１２図〜第１４図は
従来のポジテイブスローアウエイチツプを示すも
ので、第１２図は正面図、第１３図は第１２図の
Ｐ_１―Ｐ_１線視側面図、第１４図は第１２図のＰ
_２―Ｐ_２線視側面図、第１５図〜第１９図は従来
のポジテイブスローアウエイチツプをエンドミル
本体に装着した状態を示すもので、第１５図は正
面図、第１６図は側面図、第１７図は底面図、第
１８図は第１７図のＢ部拡大図、第１９図は第１
５図における加工面の断面拡大図である。１，２０，３０……ポジテイブスローアウエイ
チツプ、２……上面、３，８……稜辺部、４，２
２，３１……主切刃、５……下面、６，２１，３
２……すくい面、７……逃げ面、１２……カツタ
本体、１４，２４……切刃先端、１５，２５……
切刃後端、１６……円弧面、１７，２３……切刃
中央部、１８，２６……被切削物、１９，２７…
…加工面、α……すくい角、β，β_１……刃先角
度。 FIGS. 1 to 3 show an embodiment of the positive throw-away chip of this invention, in which FIG. 1 is a front view, FIG.
Figure 3 is a side view taken from the - line in Figure 1, Figures 4 to 8 show the cutting state when the tip is attached to the end mill body, Figure 4 is a front view, and Figure 5 is a front view. 6 is a bottom view, FIG. 7 is an enlarged view of section A in FIG. 6, FIG. 8 is an enlarged cross-sectional view of the machined surface in FIG. 4, and FIGS. FIG. 9 is a front view, FIG. 10 is a side view taken along the line ``-'' in FIG. 9, and FIG. 11 is a side view taken along the line ``-'' in FIG. 9. 12 to 14 show a conventional positive throw-away chip. FIG. 12 is a front view, FIG. 13 is a side view taken along line P ₁ - P ₁ in FIG. 12, and FIG. P in the diagram
₂ -P _2- line side view, and Figures 15 to 19 show the conventional positive throw-away tip attached to the end mill body. Figure 15 is a front view, Figure 16 is a side view, and Figure 16 is a side view. Figure 17 is a bottom view, Figure 18 is an enlarged view of part B in Figure 17, and Figure 19 is an enlarged view of part 1.
5 is an enlarged cross-sectional view of the processed surface in FIG. 5. FIG. 1, 20, 30... Positive throw-away tip, 2... Top surface, 3, 8... Edge part, 4, 2
2, 31... Main cutting edge, 5... Bottom surface, 6, 21, 3
2... rake face, 7... flank face, 12... cutter body, 14, 24... cutting edge tip, 15, 25...
Rear end of cutting blade, 16... Arc surface, 17, 23... Central part of cutting blade, 18, 26... Work to be cut, 19, 27...
...machined surface, α...rake angle, β, β ₁ ...cutting edge angle.

Claims

[Scope of utility model registration request]

The main cutting edge is formed on the opposing ridges of the upper surface, and the rake surface is formed on the side surface from the main cutting edge to the lower surface, which is the seating surface.It has a rectangular plate shape and rotates around the axis. In a positive throw-away chip that is mounted on the outer periphery of the tool body with the rake face having a positive axial rake angle, the rake face along the main cutting edge is set between the rake faces at the center of the main cutting edge. A positive throw-away tip, characterized in that it is formed with a convex curved surface whose width dimension is larger than the width dimension between the respective rake faces at the cutting edge tip and the cutting edge rear end of the main cutting edge.