B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 7/00 (2006.01) G05B 19/4103 (2006.01)
Patent
CA 2159517
There is provided a method of cutting an ellipse contour in a numerically- controlled machine tool which can to cut a target ellipse precisely while considering the diameter of the tool, and to machine a three-dimensional ellipse surface as well as a rotated ellipse locus. This method is for controlling the coordinate position of a tool T such that the velocity of the contact point of the tool with the workpiece W in a tangential direction becomes constant with an eccentric angle .theta. relative to the major axis of the ellipse E as a parameter. This method comprises the step of controlling the coordinate position (xn, yn) of the center of the tool to track along the path being away from the ellipse E in the normal direction by a distance corresponding to the radius r of the tool.
Ozaki Yasuo
Tominaga Masato
Marks & Clerk
Toshiba Kikai Kabushiki Kaisha
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