B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
B24B 41/047 (2006.01)
Patent
CA 2235333
A machine (10) for simultaneously milling and grinding a workpiece comprises milling (12) and grinding (14) wheels rotatable about respective first (A1) and second (A2) parallel axes, the second axis being offset radially with respect to the first axis. A single motor (16) drives the milling and grinding wheels at different relative speeds. The grinding wheel is mounted to a hub (58) which includes an axially flexible portion to enable the grinding surface to be axially adjusted. The milling wheel includes an array of milling cutters (36) with a large gap formed between leading and trailing ones of the the milling cutters to accomodate the offset grinding wheel. The radial spacing of the milling cutters from the axis of rotation of the milling wheel progressively increases from the leading milling cutter to the trailing milling cutter to compensate for the stock material uncut by the missing teeth derived from the cutter rotation and lateral feed of the cutter relative to the material to be machined.
Machine (10) servant à fraiser et à meuler simultanément une pièce et comprenant des roues de fraisage (12) et de meulage (14) rotatives autour d'un premier (A1) et d'un deuxième (A2) axes parallèles respectifs, le deuxième axe étant décalé radialement par rapport au premier axe. Un moteur unique (16) entraîne les roues de fraisage et de meulage à différentes vitesse relatives. La roue de meulage est montée sur un moyeu (58) qui comprend un partie flexible axialement, ce qui permet de régler axialement la surface de meulage. La roue de fraisage comprend un ensemble de lames de fraisage (36), un espace important séparant les lames arrières et avant, de manière à loger la roue de meulage décalée. L'espacement radial des lames de fraisage depuis l'axe de rotation de la roue de fraisage augmente progressivement depuis la lame avant jusqu'à la lame arrière, afin d'équilibrer l'absence de coupe dans le matériau de base causée par les dents manquantes et provenant de la rotation de la lame, ainsi que de l'avance latérale de la lame par rapport au matériau à usiner.
Cobra Machine Tool Co. Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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