Saw arbor and guided circular saw

B - Operations – Transporting – 27 – B

Patent

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Details

B27B 5/34 (2006.01) B23D 61/02 (2006.01) B27B 5/32 (2006.01)

Patent

CA 2295585

An arbor (30) for a guided circular saw (28) has three symmetrical lobes (50). The lobes (50) have end regions (52) with profiles which follow an arc centred on an axis of rotation (40) of the arbor (30). The lobes (50) have driving regions with profiles which follow the arc of a circle (53) centred in an opposing lobe (50). A saw (28) for use with the arbor (30) has an eye (60) with a shape which follows the contour of the arbor (30). The saw (28) is capable of floating axially along the arbor (30). The saw (28) and arbor (30) can be used to advantage in sawing machines such as edgers. The arbor (30) provides a much larger saw contact area than do prior art arbors. In one embodiment of the invention the saw (28) is mounted between a pair of spaced- apart collars (80) on the arbor (30). The collars (80) guide the saw (28) but are not tightly clamped to the saw (28).

Arbre (30) pour une scie circulaire guidée (28), qui possède trois lobes symétriques (50) dotés de régions terminales (52) à profils qui suivent un arc centré sur un axe de rotation (40) de l'arbre (30). Lesdits lobes (50) possèdent des régions d'entraînement à profils qui suivent l'arc d'un cercle (53) centré dans un lobe opposé (50). Une scie (28) à utiliser avec l'arbre (30) possède un oeillet (60) dont la forme épouse le contour de l'arbre (30). Ladite scie (28) est capable de flotter axialement le long de l'arbre (30). La scie (28) et l'arbre (30) de la présente invention peuvent être utilisés de manière bénéfique dans des machines à scier telles que des déligneuses. Ledit arbre (30) fournit une zone de contact avec la scie qui est bien plus grande que celle des arbres selon la technique antérieure. Dans un mode de réalisation, la scie (28) est montée entre une paire de brides (80) espacées situées sur l'arbre (30). Les brides (80) guident la scie (28), mais ne sont pas fixement attachées par serrage à cette dernière.

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