B - Operations – Transporting – 21 – C
Patent
B - Operations, Transporting
21
C
B21C 37/20 (2006.01) B21H 5/02 (2006.01) B21J 5/12 (2006.01) B21K 1/30 (2006.01) B21K 21/08 (2006.01) B21H 7/18 (2006.01)
Patent
CA 2209121
The invention concerns flow-turning process for manufacturing internally geared parts, with a press mandrel (10) comprising a mandrel (1) on which is fitted a forming tool (2) and one or more pressure rollers (3). A workpiece (4) is held between the forming tool (2) or press mandrel (10) and press rollers (3) and undergoes plastic deformation under the force exerted by the press rollers (3). As an improvement, in particular with regard to mass production, it is proposed that the forming tool should consist of chromium- and molybdenum-containing materials and should be tempered and surface-hardened, and that the distance between the forming tool (2) and. the mounting of the press mandrel (10) in the machine should be sufficient to permit a degree of deviation (a) by the forming tool (2) relative to the machine axis (5).
L'invention porte sur un processus de fluotournage pour la fabrication de pièces dentées intérieures, comprenant un mandrin de presse (10) comportant un mandrin (1) équipé d'un outil de forme (2) et d'un ou de plusieurs galets de pression (3). Une pièce à travailler (4) est maintenue entre l'outil de forme (2) ou le mandrin de presse (10) et les galets de pression (3) et subit une déformation plastique sous la force exercée par les galets de pression (3). Pour améliorer l'invention, surtout en ce qui a trait à la production en masse, on propose que l'outil de forme soit fait de matériaux comprenant du chrome ou du molybdène, et que la distance soit assez grande entre l'outil de forme (2) et le montage du mandrin de presse (10) de la machine pour permettre un certain degré de déviation (a) de l'outil de forme (2) par rapport à l'axe (5) de la machine.
Stein Bernd
Zimmermann Jurgen
Zimmermann Willi
Dynamit Nobel Gmbh Explosivstoff-Und Systemtechnik
Robic
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