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:
Sep. 11, 2018
Filed:
Feb. 11, 2016
Carl Zeiss Industrielle Messtechnik Gmbh, Oberkochen, DE;
Rainer Sagemueller, Aalen, DE;
Dominik Seitz, Schwaebisch Gmuend, DE;
CARL ZEISS INDUSTRIELLE MESSTECHNIK GMBH, Oberkochen, DE;
Abstract
A method and apparatus for reducing errors of a rotary device of a coordinate measuring machine or a machine tool. The rotary device comprises first and second parts rotatable relative to one another about an axis of rotation of the rotary device, and a rotational position measuring device for measuring rotational positions of the first part and the second part relative to one another. Errors of the rotary device due to deviations between actual positions and axial alignments relative to ideal positions and an ideal axial alignment are measured over a range of rotary angles. Expected variations in the position of the first part or second part resulting from a deviation of the rotational movement of the rotary device from an ideal rotational movement are established from the error measurements. Rotational position measurement locations of the rotational position measuring device are established in accordance with the expected variations.