Patent ID: 6752571
Filing Date: 2004-06-22
Classification: B23B,Y10T

Abstract:
A feed system for a rotating cutting tool, comprising:a tool holding fixture adapted to be driven by a spindle; adjusting means moving the tool holding fixture in a feeding direction and including a control surface to which a transmission element is associated through which transmission element the tool holding fixture is translatable in a direction of adjustment in the event of a relative movement of the control surface with respect to the transmission element; wherein an internal spindle having an outer periphery at which the control surface is formed and which is adapted to be driven synchronously with the spindle or at a predetermined difference in speed with respect thereto by means of a feed motor, wherein the tool holding fixture has the form of a boring bar coupled to the spindle, at an outer circumference of which a bending tool holder is fastened, and the transmission element is a radial pin passing through a circumferential wall of the boring bar and is biased against the control surface via a free end portion of the bending tool holder.