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:
Jun. 21, 2005
Filed:
Feb. 27, 2003
Jürgen Walz, Frickenhausen, DE;
Jürgen Walz, Frickenhausen, DE;
Werkxeugmaschinenfabrik Zerbst GmbH, Zerbst, DE;
Abstract
In a method of machining a first and a second surface recess in a workpiece, the workpiece has a longitudinal axis and a first local Cartesian coordinate system. The machine tool has a longitudinal axis and a second local Cartesian coordinate system, the first and second surface recess are associated with a first and second recess longitudinal axis and a non-circular cross-section. The recesses are separated on the surface of the workpiece such that they are mirror images of each other about a plane along the longitudinal workpiece axis. A skew angle is defined between the first recess longitudinal axis and the workpiece axis in the first plane. The method includes setting the tool axis at a start or setting angle relative to a first major axis (Z-axis) in a first plane in the second local Cartesian coordinate system; rotating the first and second local Cartesian coordinate system relative to one another until a projection of the tool axis onto a second plane (X-Y plane) of the first local Cartesian coordinate system is parallel to a second major axis of the second local Cartesian coordinate system such that when the skew angle is 0.deg, the first surface recess is machined solely by displacement of the machine tool relative to the workpiece in the direction of the longitudinal tool axis (Z-axis), or when the skew angle of other than 0.deg, the first surface recess is machined solely by displacement of the machine tool relative to the workpiece in all three axes of the second local Cartesian coordinate system.