Circular saw

B - Operations – Transporting – 27 – B

Patent

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Details

B27B 33/08 (2006.01) B23D 61/02 (2006.01) B23D 61/04 (2006.01)

Patent

CA 2358990

A side cutting edge of a tip 20 fixed to the outer circumference of a circular saw blade body 11 has a inflexion point K at a portion at which the tip projects laterally to the greatest distance. An outer-circumferential-side portion of the side cutting edge has a negative radial clearance angle of not less than -1° but less than 0° at the inflexion point, and an inner-circumferential-side portion of the side cutting edge has a positive radial clearance angle of greater than 0° but less than 1° at the inflexion point. By virtue of this configuration, a cut surface having a better surface roughness as compared to that obtained conventionally can be obtained in cutting of a soft material such as wood by use of a circular saw.

L'invention concerne une scie circulaire dans laquelle la lame coupante latérale d'un embout (20), fixé à la périphérie extérieure du corps principal (11) de cette scie circulaire, présente des points d'inflexion K au niveau des parties à partir desquelles cet embout fait le plus saillie sur le coté. Par ailleurs, l'angle réglé au niveau de ces points d'inflexion sur ladite lame tranchante latérale, du coté périphérique extérieur, est négatif, autrement dit égal à -1 DEG ou moins, et inférieur à 0 DEG , l'angle réglé au niveau desdits points d'inflexion de la lame coupante latérale, du coté périphérique intérieur, étant positif, c'est-à-dire supérieur à 0 DEG mais inférieur à 1 DEG . On obtient ainsi une surface coupante présentant un excellent état de surface, et permettant donc de couper des matériaux tendres, comme le bois, à l'aide de ladite scie circulaire.

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