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:
Oct. 25, 2005
Filed:
Nov. 05, 2002
Thomas Engelfried, Baltmannsweiler, DE;
Thomas Engelfried, Baltmannsweiler, DE;
Walter AG, Tubingen, DE;
Abstract
A machine for machining a workpiece with at least one revolving or rotating tool has a work spindle with a shaft (), whose temperature is monitored by means of at least one temperature sensor (). The temperature sensor is detected in contactless fashion. The sensor () is preferably a radiation-sensitive sensor, which detects the temperature radiation output. by the shaft (). In triggering the positioning drive mechanisms, the control unit () of the machine () takes into account the temperature expansions of the shaft () that result from the temperature changes in the shaft. The positioning drive mechanisms serve to position a tool (), carried by the shaft (), relative to the workpiece (). A machining precision is thus achieved that is independent of the temperature and temperature changes of the machine () overall, of temperature changes in the coolant—lubricant, and of temperature changes in the tool () and the shaft (), that can all be caused by the power converted at the machining site.