Method for Generating a Thread by a Tool machine, Coupling Device and Tool Machine

Abstract

The invention relates to a method for generating a thread by a numerically-controlled tool machine (or: machine tool) using a thread generation tool, the thread generation tool being rotated by a tool spindle and simultaneously advanced according to the thread pitch in the axial direction, in order to generate a thread in a borehole of a workpiece. In order to increase the working velocity of the thread generation, the invention provides that the rotational velocity (ω1) of the thread generation tool is geared up using a transmission gearing, which is situated so it is active between tool spindle and thread generation tool, in relation to the rotational velocity (ω2) of the tool spindle. Furthermore, the invention relates to a numerically-controlled machine tool.

Dependencies are inferred from the claim text.