B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 51/04 (2006.01) B23B 31/107 (2006.01) B23Q 3/12 (2006.01)
Patent
CA 2385578
A shank attaching structure with as less axial free movement as possible and of a simplified construction, a cutter for use with the shank attaching structure, and a cutter for use with the shank attaching structure which is free from an incident that the cutter becomes incapable of coming off even if an impactive rotating torque is exerted thereon, are intended to be provided, wherein the shank attaching structure is constructed such that in a state restricted by a restriction mechanism for restricting a depth to which a shank (7) is inserted into an arbor (A), the position of an engaging portion (7B) relative to the lock member (5) is axially deviated toward the open side of a shank attaching bore to bring the lock member (5) and the engaging portion (7B) into abutment with each other on the base end side of the shank attaching bore. The cutter (B) is constructed such that an outer peripheral edge portion (7C) of a concave portion forming the engaging portion (7B) is dented from an outer peripheral surface of the shank (7).
La présente invention concerne une structure d'installation de tige autorisant le moins possible de movements erratiques axiaux et une simplicité de construction. L'invention concerne également un outil de coupe servant à la structure d'installation de tige et ne se défaisant pas, même en cas de couple de rotation de choc. En l'occurrence, la structure d'installation de tige est faite de façon que, dans les limites autorisées par un mécanisme limiteur limitant la profondeur d'insertion d'une tige (7) par rapport à un arbre (A), la position de la partie engagée (7B) soit axialement déviée vers le côté ouvrant du trou d'installation de tige par rapport à l'élément de verrouillage (5). Il en résulte que l'élément de verrouillage (5) vient au contact de la partie engagée (7B) du côté de la base du trou d'installation de la tige. En outre, un outil de coupe (B) présente une forme telle que la partie périphérique extérieure (7C) d'une partie rentrante formant la partie engagée (7B) forme un évidement partant de la surface périphérique externe de la tige (7).
Kabushiki Kaisha Miyanaga
Kirby Eades Gale Baker
LandOfFree
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