Patent Number: 6,332,271

Title: Method for making rotors

Abstract: A method for making rotors for screw-type machines with a plunge-cut turning method in which an approximately rectangular groove is formed approximately at a center of a work piece with trilateral machining, a groove is cut radially deeper by trilateral machining until a predetermined groove depth has been reached, the profile flanks are shaped by bilateral machining, and the groove depth is increased with a recessing tool.

Inventors: Hampel; Kurt (Obernkirchen, DE)

Assignee: Joh. Heinr. Bornemann GmbH

International Classification: B23F 15/08 (20060101); B23F 15/00 (20060101); F01C 1/08 (20060101); F01C 1/00 (20060101); B23P 015/00 ()

Expiration Date: 12/25/2018