CONTOUR-COPYING APPARATUS

摘要

A contour-copying apparatus has a lathelike arrangement for turning at least one workpiece and a model or pattern about parallel axes. A carriage on which is pivotally mounted a support having an arm arranged above each of the turning bodies is displaceable along the bodies in the direction of their rotation axes. Journaled in each arm is a longitudinally fixed but rotatable spindle with the spindle over the model carrying a feeler and the arm over the workpiece carrying a cutting tool. The tool-carrying arm or arms has on its other end a driven pulley overy which is spanned a V-belt also engaged over a drive pulley on a motor mounted on the carriage. The V-belt engages the driven pulley over a contact arc, and the support is pivotal on the carriage about an axis which lies in a plane defined by this arc while extending orthogonally to the body axes and through the belt. Thus, only the weight of the spindle and its arm is effective against the workpiece and model since the drive forces are applied directly and only at the pivot axis.