The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 1998
Filed:
Sep. 28, 1995
Yasuo Ozaki, Shizuoka-ken, JP;
Masato Tominaga, Shizuoka-ken, JP;
Kabushiki Kikai Kabushiki Kaisha, Tokyo, JP;
Abstract
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 (x.sub.n, y.sub.n) 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.