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    • 5. 发明公开
    • 원통형 중공 부재를 신장시키는 (튜브 드로잉) 방법 및장치
    • 用于通过绘图环的方式对管进行吹塑的方法和装置
    • KR1020020080253A
    • 2002-10-23
    • KR1020020018850
    • 2002-04-08
    • 지케이엔 오토모티브 게엠베하
    • 브로흐호이저울리히스타테즈니호르스트
    • B21K21/08
    • B21K1/12B21C1/18B21C1/26
    • PURPOSE: A method and device for elongating a tube by way of a drawing ring is provided to improve tube drawing process for increasing tool service life and/or shorten drawing cycle times. CONSTITUTION: The method of elongating a tube(10) with a drawing ring(13), the tube(10) having a first end, a blank portion and a rear end, the method comprising the steps of: (a) passing the tube(10) through an effective drawing ring cross section, starting with the first end; (b) applying tensile forces to an elongated tube portion having passed through the effective drawing ring cross section(11) and applying pressure forces to a tube blank portion which has not yet passed through the effective drawing ring cross-section(11), wherein the tensile forces are applied by a mandrel(16) which is positioned in the tube and which is connected to the front end in a form-fitting or force-locking way.
    • 目的:提供一种通过拉伸环拉伸管的方法和装置,以改进管拉拔过程,以提高刀具使用寿命和/或缩短拉伸循环时间。 构成:用拉伸环(13)延长管(10)的方法,管(10)具有第一端,坯料部分和后端,该方法包括以下步骤:(a)使管 (10)通过有效的拉环环截面,从第一端开始; (b)向已经穿过有效拉环环横截面(11)的细长管部分施加拉力,并向尚未通过有效拉伸环横截面(11)的管坯部分施加压力,其中 张力通过位于管中的心轴(16)施加,心轴(16)以形状配合或力锁定的方式连接到前端。