JPS5973037U

JPS5973037U - Mild steel thin plate punching burring mold

Info

Publication number: JPS5973037U
Application number: JP16822682U
Authority: JP
Inventors: 遠藤　淳二; 染宮　清
Original assignee: 太平洋工業株式会社
Priority date: 1982-11-06
Filing date: 1982-11-06
Publication date: 1984-05-17

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 drawings]

第１図は従来金型の縦断正面図、第２図ａ、　　ｂ。Ｃは第１図の金型による打抜き工程を示す断面図、第３
図は本考案金型による打抜き工程を示す断面図。 ■はバーリングパンチ、■は被加工物、◎はバーリング
ボタンダイ、＠はインナーダイ、◎はコイルばね、［相
］はカラー。Figure 1 is a longitudinal sectional front view of a conventional mold, and Figures 2 a and b. C is a cross-sectional view showing the punching process using the die in Figure 1;
The figure is a sectional view showing the punching process using the mold of the present invention. ■ is a burring punch, ■ is a workpiece, ◎ is a burring button die, @ is an inner die, ◎ is a coil spring, [phase] is a color.

Claims

[Scope of utility model registration request]

By burring punch■ and burring button die◎,
In a burring mold that simultaneously presses a seat surface and a hole matching the shape of a countersunk machine screw, a hole O equal to the outside diameter of the countersunk machine screw is inserted from above in the center of the burring button die 0, and Large diameter holes [existence] are prepared one after another, and the inner die 0 supported by the coil spring @ is inserted into the holes [phase] and [phase] so as to slide up and down, and the inner die 0 is inserted under the burring button die @. A burring mold for punching out a thin soft steel plate with a collar [phase] having a hole through which the inner die ◎ can pass.