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1. 发明授权

US4621512A Mechanism for and method of shifting cam mechanisms in a press for pressing workpieces with depressed portions 失效
标题翻译：用于压制具有凹陷部分的工件的压机中的凸轮机构的移动机构和方法
公开(公告)号：US4621512A
公开(公告)日：1986-11-11
申请号：US461948
申请日：1983-01-28
申请人： Shinziro Tachikawa , Chikao Hada , Isami Maeda
发明人： Shinziro Tachikawa , Chikao Hada , Isami Maeda
IPC分类号： B21D28/34 , B21D28/32 , B21D37/08 , B21D28/22 , B21D28/30
CPC分类号： B21D28/32 , Y10T83/384 , Y10T83/402 , Y10T83/8835
摘要： Mechanism for and method of shifting cam mechanisms in a press for pressing workpieces with depressed portions comprise a combination of a first single cam mechanism for retracting a die by a distance equal to the depth of a depressed portion of a workpiece and a second single cam mechanism for pressing the workpiece to work the depressed portion. Said single mechanisms are provided between a bottom form and a top form being vertically movable toward and away from said bottom form. Said first single cam mechanism is composed of a pad positioned downwardly of said top form, a pin mounted on and extending downwardly from said pad, a first cam follower mounted on said bottom form and movable in response to depression of said pin, and a second cam follower mounted on said bottom form. Said second single cam mechanism has a punch for punching the depressed portion of the workpiece and is composed of a fixed cam mounted on the top form, and a third cam follower mounted on said bottom form and supporting said punch.
摘要翻译：在用于压制具有凹陷部分的工件的压机中移动凸轮机构的机构和方法包括用于将模具缩回距离等于工件的凹陷部分的深度的第一单个凸轮机构和第二单个凸轮机构用于按压工件来工作凹陷部分。所述单个机构设置在底部形式和顶部形式之间，可以朝向和远离所述底部形状竖直移动。所述第一单凸轮机构由位于所述顶部形式的下方的垫构成，安装在所述垫上并从所述垫向下延伸的销;安装在所述底部形状上并响应于所述销的按压而可移动的第一凸轮从动件，安装在所述底部形式上的凸轮从动件。所述第二单凸轮机构具有用于冲压工件的凹陷部分的冲头，并且由安装在顶部形式上的固定凸轮和安装在所述底部形状上并支撑所述冲头的第三凸轮从动件构成。

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