JPS60161509U

JPS60161509U - circular perforation knife

Info

Publication number: JPS60161509U
Application number: JP4803184U
Authority: JP
Inventors: 茂岸田
Original assignee: 日本コネチカツトソ−株式会社
Priority date: 1984-04-03
Filing date: 1984-04-03
Publication date: 1985-10-26

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は環状穿孔刃物の斜視図、第２図は第１図におけ
る■−■線の矢視拡大図、第３図および第４図は第２図
における■−■線およびＩＶ−ＩＶ線に沿う断面図、第
５図は切削作用の説明図である。３・・・刃物本体、７・・・溝、９・・・内刃、１１・
・・外刃、９Ｆ・・・第１切刃部、９Ｓ・・・第２切刃
部、９■・・・頂部、ＩＩＦ・・・第１切刃部、１１Ｓ
・・・第２切刃部、１１■・・・頂部。Figure 1 is a perspective view of the annular punching tool, Figure 2 is an enlarged view of the line ■-■ in Figure 1, and Figures 3 and 4 are the lines ■-■ and IV-IV in Figure 2. 5 is an explanatory diagram of the cutting action. 3...Knife body, 7...Groove, 9...Inner blade, 11.
...Outer blade, 9F...First cutting edge part, 9S...Second cutting edge part, 9■...Top part, IIF...First cutting edge part, 11S
...Second cutting edge part, 11■...Top part.

Claims

[Scope of utility model registration request]

(1) A plurality of grooves for discharging chips are formed at appropriate intervals on the outer peripheral surface of the cylindrical cutter body, and inner and outer cutters are formed at the end of the cutter body corresponding to each groove. The inner cutter and the outer cutter are arranged alternately in the circumferential direction, and the inner cutter and the outer cutter are formed into a mountain shape having a steeply inclined first cutting edge portion and a gently inclined second cutting edge portion. 9, the vicinity of the apex where the first cutting edge part and the second cutting edge part of the inner cutter intersect is provided so as to intersect the single rotation locus drawn by the second cutting edge part of the outer cutter, and the top part of the outer cutter is The vicinity is provided to intersect with the rotation locus drawn by the second cutting edge part of the inner blade, and the vicinity of the inner part of the second cutting edge part of the inner blade is provided to intersect with the rotation locus drawn by the first cutting edge part of the outer blade. At the same time, the vicinity of the outer end of the second cutting edge portion on the outer and inner sides is
An annular perforating blade characterized in that the first cutting edge portion of the inner blade is provided to intersect with the rotation locus.

(2) Scope of Utility Model Registration Claims, characterized in that the vicinity of the inner end of the second cutting edge of at least one inner cutter among the plurality of inner cutters is slightly deleted. circular perforation knife.