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:
Nov. 20, 2012
Filed:
Jul. 29, 2009
Hans-juergen Heyder, Lautertal, DE;
Hans-Juergen Heyder, Lautertal, DE;
Kapp GmbH, Coburg, DE;
Abstract
The invention relates to a method for the production of a rotor of a rotary screw compressor () with a cylindrical basic shape, which has a helical profile () at its outer circumference, wherein the method comprises the steps of: a) Pre-processing of the workpiece () by bringing in the profile (), wherein the profile () has a stock compared with the finished shape, b) Pre-grinding of the profile () by a rough-machining process in a grinding machine, wherein a part of the stock is removed and c) Finish-grinding of the profile () by a finish-machining process in the grinding machine, wherein the remainder of the stock is removed and the finished shape of the profile () is produced. To improve the efficiency of the production especially of rotors of rotary screw compressors and ensure a high quality of the production the invention is characterized in that the pre-grinding and/or the finish-grinding is carried out with a grinding worm () by a continuous generative grinding process.