Invention Grant
US08312750B2 Method for the production of a rotationally symmetrical part, and part produced according to said method
有权
用于制造旋转对称部分的方法,以及根据所述方法制造的部分
- Patent Title: Method for the production of a rotationally symmetrical part, and part produced according to said method
- Patent Title (中): 用于制造旋转对称部分的方法,以及根据所述方法制造的部分
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Application No.: US12307865Application Date: 2007-07-05
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Publication No.: US08312750B2Publication Date: 2012-11-20
- Inventor: Thomas Koerner , Ernst-Peter Schmitz , Peter Kolbe
- Applicant: Thomas Koerner , Ernst-Peter Schmitz , Peter Kolbe
- Applicant Address: DE Aalen
- Assignee: Gesenkschmiede Schneider GmbH
- Current Assignee: Gesenkschmiede Schneider GmbH
- Current Assignee Address: DE Aalen
- Agency: Roberts Mlotkowski Safran & Cole, P.C.
- Agent David S. Safran
- Priority: DE102006031564 20060707
- International Application: PCT/DE2007/001189 WO 20070705
- International Announcement: WO2008/003305 WO 20080110
- Main IPC: B21D17/04
- IPC: B21D17/04 ; B21D17/08

Abstract:
A method for producing a rotationally symmetrical hollow metal part, particularly a shaft. According to the method, bar-shaped ductile solid material is provided, the solid material is heated from about 300° C. below the forging temperature to the forging temperature, the solid material is transversally spline-rolled until weakenings are created in the core zone (3) of the solid material and the sold material is torn open. Two mandrels (5,6) are forcibly introduced into the center of the bar-shaped solid material during the rolling process, and then one mandrel is retracted while the other mandrel continues advancing so as to produce a tubular part. A transversally spline-rolled rotationally symmetrical hollow part, especially a shaft, which is produced according to noted method can be embodied as a transmission shaft, camshaft, drive shaft, output shaft, starter shaft, hollow shaft, or can be a preform for molded parts and the like.
Public/Granted literature
- US20090312110A1 METHOD FOR THE PRODUCTION OF A ROTATIONALLY SYMMETRICAL PART, AND PART PRODUCED ACCORDING TO SAID METHOD Public/Granted day:2009-12-17
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