Drehautomat mit verschiebbarem Spindelstock und Bearbeitungsverfahren zum Anwenden desselben.

摘要

In machining a blank material on an automatic lathe of the type having first and second headstocks slidably carried along a bed, the first and second headstocks are slidable along their respective machining axes, and the first headstock grips the blank material to take a front machining, whereupon the semi-machined blank material, i.e., a workpiece is transferred to the second headstock to take a rear machining. The lathe also has first and second guide bushes for intermediately guiding the workpiece near the working point while the workpiece is gripped by the first and second headstocks. For machining a blank material in the form of a cylindrical rod continuously, the entire machining cycle can be divided into the front and rear machinings. Thus it is possible to shorten the machining cycle period.