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1. 发明授权

US3829920A Tool head with multiple tools and common oscillatable recede and collapse cam mechanism 失效
标题翻译：具有多种工具的工具头和普通振动台及其凸轮机构
公开(公告)号：US3829920A
公开(公告)日：1974-08-20
申请号：US37630873
申请日：1973-07-05
申请人： PIPE MACHINERY CO
发明人： THEUERKAUF F
IPC分类号： B23G1/22 , B23G5/04
CPC分类号： B23G5/04 , B23G1/22
摘要： A pipe threading die head supports a plurality of radially reciprocable die carriers in circumferentially spaced relation about a common axis. A cam plate is oscillatable relative to the head about the axis, and has elongated cam slots which are arranged in end to end spaced relation in a row extending circumferentially of the axis. The slots are connected by cam followers to the tool carriers, respectively. The slots are shaped so that, upon rotation of the cam plate relative to the head in one direction at a uniform rate, they first recede all of the carriers concurrently at the same rate of speed away from the axis part way toward their fully receded positions to produce a full depth taper cut, and then recede the carriers at increased rates, to run out and collapse positions. Beginning with the second slot in the series, each slot, during run-out, recedes its associated carrier at a greater rate than the rate of recession of the immediately preceding carrier. The die head and a coaxial pipe supporting chuck are relatively rotated about the axis while driven relatively toward and away from each other end-wise of the rotational axis. A cam maintains the recessions for taper cutting and die run-out to collapsed position in predetermined fixed relation to the relative advance of the head and pipe held in the chuck.
摘要翻译：管道穿芯模头围绕公共轴线以周向间隔的关系支撑多个可往复运动的模具托架。凸轮板相对于头部围绕轴线是可摆动的，并且具有细长的凸轮槽，它们以沿轴线周向延伸的一排的端对端间隔开的关系布置。槽被凸轮从动件分别连接到工具架上。狭槽的形状使得当凸轮板相对于头部在一个方向上以均匀的速度旋转时，它们首先以相同的速度离开所有的载体，远离轴线部分方向朝向完全后退的位置产生全深度锥形切割，然后以较高的速率使载体减速，以使其失效。从系列中的第二个插槽开始，每个插槽在耗尽期间以比前一个载波的衰退速率更快的速度减速其相关联的载波。模头和同轴管支撑卡盘围绕轴线相对旋转，同时相对于旋转轴线的端部相对地朝向和远离驱动。凸轮保持锥形切割和模具退出的凹陷部以与保持在卡盘中的头部和管道的相对前进部预定的固定关系保持在折叠位置。

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