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:
Jan. 10, 2017
Filed:
Jul. 05, 2011
Leo Christopher Somerville, St. Charles, IL (US);
Leo Christopher Somerville, St. Charles, IL (US);
RENISHAW PLC, Wotton-under-Edge, GB;
Abstract
A method and corresponding apparatus are described for recalibrating coordinate positioning apparatus after a disturbance, such as a stylus replacement. The coordinate positioning apparatus includes a platform, a measurement probe and a probe head for reorienting the measurement probe relative to the platform. A calibration data set is taken for the coordinate positioning apparatus that includes datum data for a plurality of orientations of the measurement probe. The datum data includes at least first datum data for a first nominal orientation of the measurement probe. After a disturbance to the coordinate positioning apparatus, the calibration data set is updated by acquiring one or more position measurements and calculating a first correction from the one or more position measurements. The first correction describes any change in the first datum data following the disturbance and is used to update the datum data for plurality of different orientations of the measurement probe. Corresponding apparatus is also described.