Method and apparatus for grinding a rotating roller with an...

B - Operations – Transporting – 24 – B

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B24B 5/04 (2006.01) B24B 5/37 (2006.01) B24B 41/06 (2006.01)

Patent

CA 2491800

The invention relates to a device for grinding rollers (6), also for grinding hollow rollers. As the rollers tend to vibrate transversally as a result of the contact with the grinding disc (13), a cushioned body (15) is applied to the opposite side of the roller from the grinding disc (13), said body being engaged pneumatically against the roller (6) and adapting at least partially to the contours of the roller. The cushioned body consists of an elastic solid material or an elastic external skin that is filled with an elastic pressurised medium. The engagement pressure of the cushion is adjustable. This is achieved by a pneumatic advance cylinder (17) located on a base (16), said cylinder having a piston that can be impinged on both sides (18) and that bears on its piston rod (19) a fixing plate (20) comprising the elastic cushion (15). The advance cylinder (17) is connected to compressed air conduits (21, 22), P indicating the conduit comprising a pressure regulator and L indicating the return conduit in the standard case. The invention thus provides a device (14) for damping vibrations, which suppresses any regenerative chatter and guarantees a grinding pattern that is devoid of chatter marks.

L'invention concerne un dispositif pour rectifier des cylindres (6) pouvant même se présenter sous la forme de cylindres creux. Lesdits cylindres ayant tendance à être soumis à des vibrations transversales provoquées par le contact de la meule (13), un corps faisant office de tampon (15) est placé sur le côté du cylindre, opposé à la meule (13), ledit corps étant plaqué par voie pneumatique sur ledit cylindre (6) et adapté en partie au contour de ce dernier. Ledit tampon est constitué d'un matériau plein élastique ou d'une enveloppe extérieure élastique, remplie d'un agent de pression élastique. La pression d'appui dudit tampon est ajustable. A cet effet, un cylindre de poussée (17), comportant un piston (18) pouvant être sollicité de deux côtés et comportant, sur sa tige de piston (19), une plaque de fixation (20) avec ledit tampon élastique (15), se trouve sur un socle (16). Le cylindre de poussée (17) est raccordé à des conduites d'air comprimé (21, 22), P représentant la conduite d'alimentation pourvue d'un régulateur de pression et L la conduite de retour dans un cas normal. On obtient ainsi une unité d'amortissement de vibrations (14) qui empêche le broutage régénératif et assure une rectification sans trace de broutage.

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