Patent ID: 6834573
Filing Date: 2004-12-28
Classification: B23D,Y10T

Abstract:
A saw blade, comprising:an unset tooth; a left set tooth; a right set tooth; wherein the left set tooth and the right set tooth are set to a right-and-left direction; wherein when a thickness of a body section of the saw blade is D, and a set width is T, and where &agr; is a setting coefficient, a relationship that T=D+2&agr; is established; wherein a relationship between the thickness D of the body section and the coefficient &agr; is established in a manner such that when 0.85 mm&lE;D&lE;0.95 mm, 0.15 mm&lE;&agr;&lE;0.35 mm is established; when 0.96 mmwhen 1.2 mmwhen 1.5 mmwhen 1.7 mmwherein a small-diameter curl forming section for small curling chips generated at the time of cutting a workpiece is provided at a tip portion of saw teeth; wherein the small-diameter curl forming section has a plane rake face, which extends by a predetermined length from the point of the saw tooth to a direction of a gullet bottom section of the saw blade, and a curved face which is continuous to the rake face; wherein in the case where a vertical line is drawn from a cross position between the curved face and a gullet forming curved face forming the gullet section towards a direction of the cutting by means of the saw teeth, when a dimension from the vertical line to the point of the saw tooth is A and when a radius of the curved face is R, a relationship that R/1.5wherein the cross position between the curved face and the gullet forming curved face is protruded from the curved face and the gullet forming curved face.