B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 23/00 (2006.01) B24B 1/00 (2006.01) B24B 41/06 (2006.01)
Patent
CA 2352426
The invention relates to a method for machining workpieces with areas which comprise form variations, whereby the workpiece (5) is fixed between the tip (13) of the tool spindle (30) of the workpiece spindle head (1) and the tip (6) of the sleeve (13) of the tailstock (3), and a backrest seat (8) is ground on the workpiece (5). The tip (6) of the sleeve (13) of the tailstock (3) sits closely in the center of the receiver of the workpiece. The method is characterized in that the tip and the tailstock sleeve are retracted from the contact area, said contact area being located in the center of the clamping of the workpiece, to an intermediate position after the backrest seat has been ground. In addition, the workpiece is positionally fixed on the side of the tailstock by a backrest (7) and by an axial force which is applied via a prestressed pressure pin (21) and which is directed against the center of the clamping of the workpiece.
L'invention concerne un procédé pour l'usinage de pièces ayant des zones présentant des écarts de forme. Dans le procédé selon l'invention, la pièce (5) est montée entre la pointe (4) de la broche (30) de la poupée porte-pièce (1) et la pointe (6) du fourreau (13) de la contre-poupée (3) et un logement de lunette (8) est poli sur la pièce (5), la pointe (6) du fourreau (13) de la contre-poupée (3) adhérant au centre du logement de la pièce. Le procédé selon l'invention est caractérisé en ce que, après polissage du logement de lunette, la pointe et le fourreau de contre-poupée sont ramenés de la zone de contact au centre de la fixation de la pièce à une position intermédiaire et en ce que la position de la pièce est fixée, côté contre-poupée, par une lunette (7) et une force axiale dirigée contre le centre de la fixation de la pièce et appliquée par l'intermédiaire d'un boulon de maintien précontraint (21).
Erwin Junker Maschinenfabrik Gmbh
Fetherstonhaugh & Co.
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