JPS60176827U

JPS60176827U - Burring punch

Info

Publication number: JPS60176827U
Application number: JP6551284U
Authority: JP
Inventors: 手川　蔵敏; 相場　栄一
Original assignee: 三池工業株式会社; 相栄産業株式会社
Priority date: 1984-05-07
Filing date: 1984-05-07
Publication date: 1985-11-22

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図は従来のバーリング用パンチの要部を示す斜視図
、第２図は同パンチによって成形したバーリング部の斜
視図、第３図は本考案のバーリング用パンチを有するプ
レス装置の要部断面図、第４図は同パンチの要部斜視図
、第５図は同パンチにより成形したバーリング部の斜視
図、第６図は同バーリング部の使用状態を示す概略断面
図、第７図Ａ、　Ｂは本考案の他の実施例を示す要部断
面図である。１０・・・バーリング用パンチ、１６・・・バーリング
部、１８・・・バーリングパンチ部、１９・・・下孔パ
ンチ部、２０・・・尖端部、２１ａ、２１ｂ・・・平担
部、２２・・・開口。Fig. 1 is a perspective view showing the main parts of a conventional burring punch, Fig. 2 is a perspective view of a burring part formed by the same punch, and Fig. 3 is a cross section of the main part of a press device having the burring punch of the present invention. Figure 4 is a perspective view of the main parts of the punch, Figure 5 is a perspective view of the burring part formed by the punch, Figure 6 is a schematic sectional view showing the burring part in use, Figure 7A, B is a sectional view of main parts showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 10... Burring punch, 16... Burring part, 18... Burring punch part, 19... Prepared hole punch part, 20... Point end part, 21a, 21b... Flat part, 22 ...opening.

Claims

[Scope of utility model registration request]

In a burring punch having a burring punch part for forming a burring part on a flat plate and a pilot hole punch part for opening a through hole in the burring part, the tip of the pilot hole punch part 19 has a mountain-shaped cross section. A punch for burring.