Patent ID: 7014540

Claim:
A device for the precision plane finishing of planar surfaces on workpieces, configured as a honing machine with a tool spindle rotatable about a spindle axis, on which a tool with at least one operating surface on the face side covered with cutting medium is mounted, whereby the device has a spindle rotary drive for the tool, an axial spindle drive for the tool spindle, and an axial feed drive embedded in the tool spindle, whereby furthermore a workpiece rotary drive is provided for the workpiece, which rotary drive has a workpiece axis of rotation eccentric with respect to the spindle axis, and whereby the feed occurs at least through one of the axial drives of the honing machine, the tool having at least two operating surfaces, which are covered on the face side with cutting means, and which are axially movable independent of one another, however, are together rotatable about the spindle axis, the operating surfaces having at least one inner and one outer operating surface viewed in radial direction, which operating surfaces are arranged concentrically to one another having varying cutting means surfaces, the spindle rotary drive and the workpiece rotary drive are controllable such that the cutting speed, which results from the superpositioning of the peripheral speeds of the respective operating surface and of the workpiece, is between 10 m/min and 50 m/min.