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. 12, 1989
Filed:
Jun. 09, 1988
Karlheinz Gudow, Bad Homburg, DE;
Klingelnberg Sohne, Remscheid, DE;
Abstract
A numerically controlled machine for processing printed circuit boards, including a workpiece holder and at least one operating unit that includes a motor arbor with an exchangeable tool, and a feed mechanism with a drive motor, a control mechanism, and a first movement-measuring system. For each operating unit, there is provided a respective second movement-measuring system that is disposed thereon, and a respective reference measuring point on the workpiece holder, with the aid of which there can be measured a distance between a tip of the tool and an abutment surface of the operating unit that rests upon a workpiece during a processing operation. Prescribed drilling depths are correctable in the control mechanism of the feed mechanism via the measured distance value. This compensation of respective tolerance values is effected independently for each operating unit.