Verfahren und Einrichtung zur Bearbeitung von Löcher mittels eines rotierenden Werkzeugs

摘要

The invention relates to servo-driven computer-numerically-controlled systems of the type adapted to receive part program instructions defining a desired path Ä110Ü of relative movement between a tool Ä12Ü and a workpiece ÄWÜ, wherein the path may include an interior or exterior curved portion to be effected by coordinated linear movement of machine members along at least two orthogonal linear axes ÄX,YÜ. The invention provides apparati and methods for correcting path radius errors ÄEÜ to facilitate rapid and accurate movement along the curve. The invention carries out path radius correction by generating position commands Ä52,53,54 and 55Ü received by the servo Ä69Ü using corrected radius data Ä46Ü, the difference between which and the desired radius ÄRÜ to be machined compensates for at least a portion of the path radius error ÄEÜ that would otherwise be generated by the servo Ä69Ü.