JPS62138521U

JPS62138521U -

Info

Publication number: JPS62138521U
Application number: JP2525786U
Authority: JP
Priority date: 1986-02-24
Filing date: 1986-02-24
Publication date: 1987-09-01
Also published as: JPH0453848Y2

Description

[Brief explanation of the drawing]

第１図〜第１１図はこの考案のエンドミルの一
実施例を示すもので、第１図は正面図、第２図は
底面図、第３図は第２図の―線視図、第４図
は上記エンドミルに外周チツプとして装着されて
いるチツプを示す正面図、第５図は第４図の―
線視断面図、第６図は第４図の―線視図、
第７図は上記エンドミルに内周チツプとして装着
されているチツプを示す正面図、第８図は第７図
の―線視断面図、第９図は第７図の―線
視図、第１０図は上記内周チツプと外周チツプと
の回転軌跡を示す側断面図、第１１図は第２図の
―線視、第１２図および第１３図は従来
のエンドミルを示すもので、第１２図は底面図、
第１３図は正面図である。１０……エンドミル本体、１２……外周面、１
３，１５……チツプ座、１４……先端面、１６…
…（外周）チツプ、１７……（内周）チツプ、２
０，３０……上面、２１，３１……下面、２２，
２３，３２，３３……切刃、２５，３５……側面
、２６，３６……ノーズ刃、２７……小切刃。 Figures 1 to 11 show an embodiment of the end mill of this invention; Figure 1 is a front view, Figure 2 is a bottom view, Figure 3 is a perspective view of Figure 2, and Figure 4 is a The figure is a front view showing the tip installed as the outer peripheral tip on the end mill, and Figure 5 is the same as in Figure 4.
A line sectional view, Figure 6 is a - line view of Figure 4,
FIG. 7 is a front view showing the tip installed as an inner circumferential tip in the end mill, FIG. 8 is a cross-sectional view taken along the - line of FIG. 7, FIG. 9 is a view taken along the - line of FIG. The figure is a side sectional view showing the rotation locus of the inner circumferential tip and the outer circumferential tip, FIG. 11 is a view taken along the - line in FIG. 2, FIG. 12 and FIG. is the bottom view,
FIG. 13 is a front view. 10...End mill body, 12...Outer peripheral surface, 1
3,15...Tip seat, 14...Tip surface, 16...
...(Outer circumference) Chip, 17...(Inner circumference) Chip, 2
0,30...Top surface, 21,31...Bottom surface, 22,
23, 32, 33...cutting blade, 25, 35...side surface, 26, 36...nose blade, 27...small cutting blade.

Claims

[Scope of utility model registration request]

The end mill body includes an end mill body that rotates around an axis, an inner tip attached to the tip surface of the end mill body, and an outer tip attached to the outer periphery of the tip of the end mill body. Each of the outer chips has a plate shape, and a cutting edge is formed on the ridge of the upper surface, and the side surface from the cutting edge to the lower surface serving as the seating surface has a width dimension between the side surfaces at the center of the cutting edge. is formed by a convex curved surface that is larger than the width dimension between each side surface at both ends of the cutting blade, and the inner circumferential tip has its lower surface abutted against the tip surface of the end mill body so that the cutting blade By making it a bottom cutting edge, the side surface becomes a rake surface, and on the other hand, the outer circumferential tip has its upper surface facing the outer circumferential side of the end mill body, and the cutting edge serves as an outer circumferential cutting edge, so that the side surface becomes a rake surface. A small cutting edge formed on the ridge line of the side surface that is a surface and intersects with the tip side of the cutting edge that is the outer peripheral cutting edge is the cutting edge that is the bottom edge of the inner peripheral chip and the rotation locus. An end mill with a bottom blade, characterized in that the end mills are attached to the end mill body in series with each other.