JPS637405U

JPS637405U -

Info

Publication number: JPS637405U
Application number: JP10259186U
Authority: JP
Priority date: 1986-07-02
Filing date: 1986-07-02
Publication date: 1988-01-19

Description

[Brief explanation of the drawing]

第１図〜第３図はこの考案のドリルの一実施例
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１図の―線視断面図、第４図〜
第６図は従来のドリルを示すもので、第４図は正
面図、第５図は底面図、第６図は第４図の―
線視断面図、第７図〜第９図は他の従来のドリル
を示すもので、第７図は正面図、第８図は底面図
、第９図は第７図の―線視断面図である。１０……ドリル本体、１１……切屑排出溝、１
２……チツプ（スローアウエイチツプ）、１５…
…先端面、１６……クランプネジ、２０……油穴
、２１……油穴本管、２２……油穴管、２３……
連絡油路。 Figures 1 to 3 show an embodiment of the drill of this invention. Figure 1 is a front view, Figure 2 is a bottom view, and Figure 3 is a cross-sectional view taken along the - line of Figure 1. Figure 4~
Fig. 6 shows a conventional drill, Fig. 4 is a front view, Fig. 5 is a bottom view, and Fig. 6 is the same as Fig. 4.
7 to 9 show other conventional drills, FIG. 7 is a front view, FIG. 8 is a bottom view, and FIG. 9 is a cross-sectional view of FIG. 7. It is. 10...Drill body, 11...Chip discharge groove, 1
2... Chip (throwaway chip), 15...
... Tip surface, 16 ... Clamp screw, 20 ... Oil hole, 21 ... Oil hole main pipe, 22 ... Oil hole pipe, 23 ...
Connecting oil road.

Claims

[Scope of utility model registration request]

A throw-away tip having a cutting edge is attached to the tip of a drill body that has a chip discharge groove formed on its outer periphery, and an oil hole that opens at the tip surface of the drill body is formed in the drill body. In the indexable drill, the above oil hole is
an oil hole main pipe extending toward the distal end within the drill body;
An oil hole pipe extending from the tip of the main oil hole pipe toward the outer circumference of the drill body and opening to the outer circumferential surface other than the chip discharge groove, and an oil hole pipe formed on the outer circumference of the drill body where the oil hole pipe opens. A throw-away type drill characterized by being formed with a concave groove-shaped communication oil passage that opens on the outer circumferential side and the tip side.