Burnishing roller head

B - Operations – Transporting – 24 – B

Patent

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Details

B24B 39/04 (2006.01) B24B 5/42 (2006.01)

Patent

CA 2590444

The invention relates to a burnishing roller head (10) for burnishing radii (28) or recesses which respectively laterally define the bearing seats of main and lifting journals (3, 4) of crankshafts (1) for motors of motor vehicles. Two disk-shaped and cylindrical burnishing rollers (11, 12) with the same diameter and approximately the same width are arranged parallel and at a mutual distance from each other in the housing (9) of the burnishing roller head (10) and are mounted in such a way that they can rotate about a common horizontal rotational axis (18) in the housing (9) of the burnishing roller head (10). Said burnishing rollers (11, 12) respectively comprise, on the outer peripheral edges (22) thereof opposing each other, a rotating rounded projection (21) which enlarges the diameter of the respective burnishing roller (11, 12) by a pre-determined measure (24), the axial width of the burnishing roller (11, 12) extending simultaneously over a section of the projection close to the edge.

La présente invention concerne une tête de cylindres de laminage (10) destinée au laminage de rayons (28) ou d'entailles qui délimitent latéralement respectivement les sièges de palier de tourillons principaux et tourillons de levage (3, 4) de vilebrequins (1) destinés à des moteurs de véhicules automobiles. Selon l'invention, deux cylindres de laminage (11, 12) en forme de disque et cylindriques, de diamètre identique et de largeur approximativement identique, sont disposés parallèlement et à distance l'un à l'autre, dans le boîtier (9) de la tête de cylindres de laminage (10), et sont montés dans le boîtier (9) de la tête de cylindres de laminage (10), pour pouvoir tourner autour d'un axe de rotation horizontal commun (18). Les cylindres de laminage (11, 12) présentent respectivement sur leurs bords périphériques extérieurs (22) mutuellement opposés, une partie en saillie (21) arrondie périphérique qui augmente le diamètre du cylindre de laminage (11, 12) respectif d'une valeur prédéterminée (24), la largeur axiale du cylindre de laminage (11,12) s'étendant simultanément sur une section de la partie en saillie, proche du bord.

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