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. 12, 1991
Filed:
Apr. 03, 1989
David H Youden, Nelson, NH (US);
Rank Taylor Hobson Inc., Keene, NH (US);
Abstract
A device which substantially compensates for the expansion or contraction of a machining apparatus to varying temperatures in and among the components of the machining apparatus links two axes of movement of the machining apparatus by providing a measurement axis defined by the intersection of a first vertical plane passing through the cutting tip of a cutting tool and a second vertical plane passing through the workface of a workpiece to be machined, and associating one end of a temperature-insensitive member with this measurement axis, the other end of the temperature-insensitive member being in the same vertical plane as a reference point which remains stationary with respect to the measurement axis regardless of the thermal growth of the components of the machining apparatus.