Means for producing relative reciprocatory movement between...

B - Operations – Transporting – 24 – B

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Details

B24B 3/36 (2006.01) B23Q 5/00 (2006.01) B23Q 5/027 (2006.01) B23Q 5/38 (2006.01) B24B 47/04 (2006.01)

Patent

CA 2179275

Means for producing reciprocatory movement of a vice carrier (18) across a guideway (17) mounted on a body moulding (11, 16), which partly shrouds a rotatably driven grinding wheel (14), comprise a rack moulding (57) having upper and lower racks (61, 62) which are alternately engaged by a pinion (44) driven from the grinding wheel drive, in use. Rack moulding movement is transmitted to the vice carrier and spring means (67, 68) move the rack mounding to change the pinion engagement from the lower rack to the upper rack and vice versa at the ends of the racks, thereby reversing the rack moulding movement. A guide peg (56) of the body moulding alternately engages in upper and lower slots (65a, 65b) of the rack moulding to maintain the pinion in engagement with its appropriate associated rack while it is between the ends thereof. The arrangement is intended for use as part of a releasable adapter for a powered grinding tool incorporating said grinding wheel.

Moyen permettant d'appliquer un mouvement alternatif à un porte-étau (18) sur une glissière (17) montée sur un corps moulé (11, 16) qui enveloppe en partie une meule (14) entraînée en rotation. Ce moyen comprend un ensemble crémaillère formé par moulage (57), et doté de crémaillères supérieure et inférieure (61, 62) qui entrent alternativement en prise avec un pignon (44) entraîné, en cours d'utilisation, par le dispositif d'entraînement de la meule. Le mouvement de l'ensemble crémaillère est transmis au porte-étau, et des ressorts (67, 68) déplacent ledit ensemble de façon que le pignon passe de la crémaillère inférieure à la crémaillère supérieure, et inversement, aux extrémités des crémaillères, inversant ainsi le mouvement de l'ensemble crémaillère moulé. Une cheville de guidage (56) du corps moulé entre alternativement en prise avec des fentes supérieure et inférieure (65a, 65b) de l'ensemble crémaillère afin de maintenir le pignon en prise avec la crémaillère associée appropriée alors qu'il se trouve entre les extrémités des crémaillères. Cet agencement peut être intégré dans un adaptateur libérable d'un outil de meulage électrique comprenant ladite meule.

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