JPS62179132U

JPS62179132U -

Info

Publication number: JPS62179132U
Application number: JP6661986U
Authority: JP
Priority date: 1986-04-30
Filing date: 1986-04-30
Publication date: 1987-11-13
Also published as: JPH024728Y2

Description

[Brief explanation of the drawing]

第１図は本考案に係るマンドレルの一実施例を
示す半裁断面正面図。第２図は拡管ビレツトの装
着脱を行う際の状態を示す断面図。第３図乃至第
５図は部品図を示し、第３図イはセツトピンの後
端部の形状を示す要部正面図、同図ロはその要部
平面図、第４図イはスリーブの断面図、同図ロは
その右側面図、第５図イはマンドレル軸の先端部
の要部正面図、同図ロはその左側面図。第６図は
従来例を示す要部断面図。１……セツトピン、３……拡管ビレツト、６…
…係合突起、７……スリーブ、１０……係合凸部
、１２……スプリング、１３……マンドレル軸、
１５……係合用溝、１６……係合用孔。 FIG. 1 is a half-cut front view showing an embodiment of the mandrel according to the present invention. FIG. 2 is a cross-sectional view showing the state when attaching and detaching the expanded billet. Figures 3 to 5 show parts diagrams, Figure 3A is a front view of the main part showing the shape of the rear end of the set pin, Figure 4B is a plan view of the main part, and Figure 4A is a cross section of the sleeve. Figure 5B is a right side view, Figure 5A is a front view of the main part of the tip of the mandrel shaft, and Figure 5B is a left side view. FIG. 6 is a sectional view of main parts showing a conventional example. 1... Set pin, 3... Expanded billet, 6...
...Engagement protrusion, 7...Sleeve, 10...Engagement protrusion, 12...Spring, 13...Mandrel shaft,
15...Engagement groove, 16...Engagement hole.

補正昭６１．７．２５図面の簡単な説明を次のように補正する。明細書第１５頁第８行目の「第６図は…要部断
面図。」を下記の文章に補正。「第６図は他実施例を示す要部断面正面図。第
７図は従来例を示す要部断面図。」Amendment July 25, 1980 The brief description of the drawing is amended as follows. In the 8th line of page 15 of the specification, "Figure 6 is a sectional view of the main parts." has been amended to the following sentence. "Figure 6 is a sectional front view of main parts showing another embodiment. Figure 7 is a sectional view of main parts showing a conventional example."

Claims

[Claims for Utility Model Registration] 1. A set pin 1 having an expanded billet 3 at its tip, and a set pin 1 on the rear side of the set pin 1.
a sleeve 7 which is slidably fitted to the outside of the set pin 1 in a non-rotating state; and an elastic member 1 for urging the sleeve 7 toward the rear end of the set pin 1.
2, and furthermore, a rear end portion of the set pin 1 and a distal end portion of the mandrel shaft 13 are each provided with a screw plate so as to prevent the set pin 1 and the mandrel shaft 13 from coming off by rotational displacement of both the pin 1 and the mandrel shaft 13. An engaging protrusion 6 and an engaging hole 16 are provided which are capable of engaging and disengaging each other, and the sleeve 7 and the mandrel shaft 13 are provided at both the rear end of the sleeve 7 and the tip of the mandrel shaft 13. Engagement protrusions 10 and 1 that can be engaged with each other to prevent both from rotating.
1. A mandrel for expanding a tube, characterized in that a groove 0 and an engaging groove 15 are provided. 2. A means for stopping the rotation of the sleeve 7 on the set pin 1 is provided through notch guide holes 9, 9 provided along the axial direction of the sleeve 7, and through the set pin 1 to engage with the notch holes 9, 9. A pipe expanding mandrel according to claim 1, which comprises a pin 11 provided as a utility model.