Apparatus for machining a workpiece

Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work

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72 83, B21D22/18

Patent

active

059015950

ABSTRACT:
An apparatus for machining a workpiece comprises means for clamping the workpiece, means for rotatingly driving the clamped workpiece, a tool for machining the workpiece, the tool having a part for engaging the workpiece, a tool holder, means for moving the tool holder with respect to the clamping means and a control unit with a memory for one or more control programs. The control unit is arranged to control the moving means according to a control program by means of measuring means providing the x,y-positions of the tool holder in such a manner that the tool follows a desired path along the clamping means for machining the workpiece. The apparatus comprises a measuring device located at a predetermined reference position with respect to the moving means. The control unit is arranged to control the moving means in such a manner that said tool part is moved along to the measuring device, wherein the measuring device delivers a measuring signal to the control unit, wherein the control unit determines the shape of said tool part and the position thereof with respect to the tool holder directly from the x,y-positions provided by the x,y-measuring means and stores these x,y-positions in the memory for use in the (each) control program for the corresponding tool.

REFERENCES:
patent: 4807145 (1989-02-01), Takahashi et al.
patent: 5255199 (1993-10-01), Barkman et al.
patent: 5363185 (1994-11-01), Zana
patent: 5419222 (1995-05-01), Bieg

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