B - Operations – Transporting – 21 – K
Patent
B - Operations, Transporting
21
K
B21K 1/76 (2006.01) B21H 1/06 (2006.01) B21K 1/04 (2006.01) B23D 21/00 (2006.01) B21H 1/12 (2006.01)
Patent
CA 2189042
In order to produce highly-accurate rings, preferably from antifriction bearing steel, it is proposed according to the invention that the section of the tubular workpiece to be separated be completely encompassed by the longitudinal contour of the cutting rollers and that the faces of the rings being produced plane-parallel and vertical relative to the workpiece axis. What is essential is that prior to the cutting process the tubular workpiece is heated to a temperature that substantially lowers the deformation resistances of the material used.
L'invention concerne un procédé permettant de séparer en continu, sans enlèvement de copeaux, des bagues (4) individuelles identiques, de pièces tubulaires (1), à l'aide de rouleaux de coupe (2). Afin de produire, avec une grande précision, de préférence des bagues (4) en acier pour roulements, il est prévu que la section à séparer de la pièce tubulaire (1) soit entièrement entourée par le contour longitudinal des rouleaux de coupe (2). Les faces d'extrémité des bagues (4) seront planes et parallèles, perpendiculaires à l'axe de la pièce. Il est important qu'avant le processus de séparation, la pièce tubulaire soit portée à une température abaissant sensiblement la résistance à la déformation du matériau utilisé.
Fetherstonhaugh & Co.
Mannesmann Aktiengesellschaft
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