公开(公告)号：US20040107560A1

公开(公告)日：2004-06-10

申请号：US10687583

申请日：2003-10-20

Applicant: Piolax Inc.

Inventor： Masami Wakamori ,  Toshie Fueki

IPC: B23P011/00

CPC classification number: B21D39/00 ,  F16F1/122 ,  Y10T29/49611 ,  Y10T29/4992

Abstract: A manufacturing method of a spring assembly, assembles an annular plate and a compression coil spring. The method includes forming a protrusion having a tapered portion on the annular plate, and inserting a punch including a first portion having a larger diameter than an inner diameter of a tip end of the tapered portion from the tip end side into the protrusion to expand the tip end of the tapered portion. The expansion of the tip end of the tapered portion involves expanding a base portion of the protrusion, which extends the tapered portion and has a larger inner diameter than that of the tip end of the tapered portion, along a surface of an end turn of the compression coil spring.

Abstract translation: 一种弹簧组件的制造方法，组装环形板和压缩螺旋弹簧。 该方法包括在环形板上形成具有锥形部分的突起，并且将包括第一部分的冲头插入到突起中，该第一部分具有比锥形部分的前端的内径大的直径， 锥形部分的尖端。 锥形部分的尖端的膨胀包括使突出部的基部延伸，该基部延伸锥形部分并且具有比锥形部分的尖端更大的内径，沿着 压缩螺旋弹簧。