JPS6395624U

JPS6395624U -

Info

Publication number: JPS6395624U
Application number: JP19146686U
Authority: JP
Priority date: 1986-12-12
Filing date: 1986-12-12
Publication date: 1988-06-20

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の皿穴成形用金具を
示す部分断面図、第２図ａ〜ｃは第１図の皿穴成
形用金具の使用状態を示す部分断面図、第３図及
び第４図は、従来の皿穴成形方法を説明するため
の断面図である。１……パンチボデイ、１ａ……皿穴成形部、１
ｂ……ガイド部、１ｃ……パンチボデイの先端面
、２……台、２ａ……台の表面部、３……加工す
る板、７……皿穴、９……台の穴、１０，５，６
……加工する板の下穴（丸穴）、１１……中立面
。 Fig. 1 is a partial sectional view showing a countersink forming metal fitting according to an embodiment of the present invention, Figs. 2 a to c are partial sectional views showing the use state of the countersink forming metal fitting of Fig. 1, and Fig. 3 and FIG. 4 are cross-sectional views for explaining a conventional countersink forming method. 1... Punch body, 1a... Countersink forming part, 1
b... Guide part, 1c... Tip face of punch body, 2... Stand, 2a... Surface part of stand, 3... Board to be processed, 7... Countersink, 9... Hole in stand, 10, 5 ,6
...Prepared hole (round hole) of the plate to be processed, 11... Neutral surface.

Claims

[Claims for Utility Model Registration] (1) Consisting of a table on which a plate to be processed is placed and a punch body for pressing the plate, a hole perpendicular to the plate is provided in the table, and the tip of the punch body is provided with a hole perpendicular to the plate. is planar, the bottom surface of a truncated conical countersink forming part is fixed to the tip surface of the punch body, and a cylindrical guide part is connected in the axial direction at the tip of the countersink forming part. A countersink molding die, characterized in that the diameter of the guide portion is slightly smaller than the diameter of the hole in the stand. (2) The countersink forming mold according to claim 1, wherein the surface portion of the table has a tapered shape that gently bulges around the hole.