JPS62101633U

JPS62101633U -

Info

Publication number: JPS62101633U
Application number: JP19487485U
Authority: JP
Priority date: 1985-12-18
Filing date: 1985-12-18
Publication date: 1987-06-29

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す断面図、第２
図は第１図の平面図、第３図は第２図のＡ部の拡
大図、第４図および第５図は第１図のピアスダイ
の作用説明図、第６図はスクラツプの要部平面拡
大図、第７図は従来のピアスダイの構成を示す断
面図、第８図は第７図の作用説明図、第９図はス
クラツプの形状が異なる従来のピアスダイの断面
図である。４…ピアスポンチ、１０…ピアスダイ、１０ａ
…ダイ穴、１１…切欠溝、Ｗ…ワーク、Ｂ…突起
部。 Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a plan view of Fig. 1, Fig. 3 is an enlarged view of section A in Fig. 2, Figs. 4 and 5 are explanatory diagrams of the operation of the piercing die in Fig. 1, and Fig. 6 is a plan view of the main part of the scrap. 7 is a sectional view showing the structure of a conventional piercing die, FIG. 8 is an explanatory view of the operation of FIG. 7, and FIG. 9 is a sectional view of a conventional piercing die with a different scrap shape. 4...Earring punch, 10...Earring die, 10a
...Die hole, 11...Notch groove, W...Work, B...Protrusion.

Claims

[Scope of utility model registration request]

It is a piercing die that performs piercing processing by shearing action based on engagement with a piercing punch, and is a piercing die that is placed on the inner peripheral surface of the die hole from the opening edge of the die hole toward the inner part and ends midway through the effective depth of the die hole. A piercing die structure characterized by the formation of notched grooves.