发明授权
US4543635A Process and switching circuit for the positional control of radial drilling machines 失效
径向钻床定位控制的过程和切换电路

Process and switching circuit for the positional control of radial
drilling machines
摘要:
A process is disclosed for automatically positioning the drill spindle over a workpiece at a predetermined location defining the bore center, wherein the shop drawing and the workpiece bore centers are defined as to their locations in different coordinate systems and wherein the invention provides for calculating and measuring steps to transform between the various coordinate systems. The invention discloses also apparatus for practicing the process by employing a controller-arithmatic unit which carries out the coordination of the plurality of logic circuits and the effecting the use of a programmed performance of the process including the teaching or updating of the program for new bores.
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