Floating Thread Tap
Original Publication Date: 1989-Jan-01
Included in the Prior Art Database: 2005-Jan-27
This article describes an arrangement for robotized threading of work pieces. A specially designed coupling is used in order to make this operation possible. Threading of bore holes in work pieces is practically exclusively performed manually today, at least for certain details. The difficulty in robotizing this operation arises because of the "incremental" movement pattern of the robots, which leads to non-uniform loading during the actual threading. Such a non-uniform loading might give rise to deficient tolerances in the manufactured thread. By utilizing a special connection or coupling 1 between the robot arm and the thread tap 2, the robot arm can be held in a fixed position and the threading can be performed under constant load.