B - Operations – Transporting – 27 – B
Patent
B - Operations, Transporting
27
B
B27B 33/08 (2006.01)
Patent
CA 2542470
A disc-shaped tool 10 includes a plurality of virtual regions formed such that it is surrounded by two radius lines extending from a rotation center of a disc-shaped base metal 11 and two concentric circles on the base metal disposed around the rotation center. A central angle formed by the two radius lines is equal to or less than 90°, and the number of the virtual regions is 4 to 24. The concentric circle located in a center of an interval of the two concentric circles forming the virtual region is in a range of 0. 6r to 0.8r with respect to the rotation center of the base metal when a maximum gullet bottom radius of the base metal is r. An overlapping of the virtual regions continuously adjoining each other is in a range of 0° to 12°. A minimum neighborhood distance between the adjoining slits is equal to or more than 0. 05r. A ratio of a length of an arc of the central concentric circle in each virtual region with respect to the interval of the two concentric circles in the virtual region is 3 to 6.
L'invention concerne une scie circulaire (10) comprenant des zones imaginaires (13) continues dans le sens de la circonférence. Ces zones sont toutes entourées par deux lignes radiales s'étendant à partir du centre de rotation d'un métal de base (11), et par deux cercles formés sur ledit métal (11), le centre de ces deux cercles correspondant au centre de rotation. L'angle central formé par les deux lignes radiales est de 90· ou inférieur, et le nombre de zones imaginaires est compris entre 4 et 24. Un cercle concentrique central, placé au centre de l'espacement entre les deux cercles concentriques formant les zones imaginaires, est compris entre 0,6r et 0,8r par rapport au centre de rotation du métal de base, r représentant le rayon inférieur de dent maximum du métal de base. Le chevauchement de zones imaginaires adjacentes continues est compris entre 0· et 12·. La distance minimum entre des fentes adjacentes est de 0,05r ou supérieure. Dans chaque zone imaginaire, le rapport entre la longueur d'arc du cercle concentrique central et l'espacement entre les deux cercles concentriques est compris entre 3 et 6.
Iinuma Tomoyuki
Nakajima Yasutaka
Nishio Satoru
Kanefusa Kabushiki Kaisha
Smart & Biggar
LandOfFree
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