Side activated tool unit clamping apparatus using mechanical...

B - Operations – Transporting – 23 – B

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B23B 29/04 (2006.01)

Patent

CA 2332907

A side activated clamping mechanism (235) for detachably connecting a tool unit (210) to a tool suport housing (237). The tool unit (210) has a shank (216) with openings which are engaged by locking elements (257a, b) extending radially from apertures (255a, b) in a canister (239) mounted within the tool support housing (237). Mechanical advantage of the locking elements (257a, b) may be increased by angling the locking element contact surfaces (230, 276) relative to one another. The locking elements (257a, b) are driven along a ball track (263) on a reciprocating lock rod (260). To accommodate the angle between the contact surfaces (230, 276), the ball track (263) must be angled.

Mécanisme (235) de serrage à activation latérale servant à coupler de manière amovible une unité (210) d'outil à un carter (237) de porte-outil. L'unité (210) d'outil comporte un corps (216) doté d'ouvertures bloquées par des éléments (257a, b) de verrouillage qui s'étendent radialement des ouvertures (255a, b) à l'intérieur d'un boîtier (239) monté dans le carter (237) de porte-outil. L'avantage mécanique des éléments (257a, b) de verrouillage peut être amélioré si on place de biais avec un angle les surfaces (320, 276) de contact des éléments de verrouillage l'une par rapport à l'autre. Les éléments (257a, b) de verrouillage sont entraînés le long d'un chemin (263) à billes sur une tige (260) de verrouillage animée d'un mouvement de va-et-vient. Pour s'adapter à l'angle existant entre les surfaces (230, 276) de contact, le chemin (263) à billes doit lui aussi être incliné avec un angle.

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