Circular saw blade

A circular saw blade for metal cutting, comprising:

• a disk-shaped base metal having a circular mounting hole located at a center of the disk-shaped base metal for receiving a rotation shaft configured to rotate the circular saw blade in a rotational direction about a central axis to cut the metal;
• a plurality of circumferentially-spaced gullets opening radially outward at an outer periphery of the base metal, wherein each gullet has a rear end relative to the rotational direction;
• a plurality of circumferentially-spaced tip-receiving seats defined by a plurality of recesses in the base metal at the rear ends of the gullets;
• a plurality of cutting tips seated in the plurality of tip-receiving seats and mounted to the base metal, wherein the cutting tips protrude radially outward from the base metal, and wherein each cutting tip includes:
• a rectangular box-shaped tip body and a rectangular box-shaped thin portion extending radially inward from the rectangular box-shaped tip body,
• wherein the rectangular-box shaped tip body has a cutting edge at an intersection of a rake face on a front side of the rectangular-box shaped tip body relative to the rotational direction and a flank on a radially outer side of the rectangular-box shaped tip body, wherein the cutting edge extends in a thickness direction of the base metal, and
• wherein a circumferentially extending groove is formed in the flank.

A circular saw blade for metal cutting, comprising:

• a disk-shaped base metal having a circular mounting hole located at a center of the disk-shaped base metal for receiving a rotation shaft configured to rotate the circular saw blade in a rotational direction about a central axis to cut the metal;
• a plurality of circumferentially-spaced gullets opening radially outward at an outer periphery of the base metal, wherein each gullet has a rear end relative to the rotational direction;
• a plurality of circumferentially-spaced tip-receiving seats defined by a plurality of recesses at the rear ends of the gullets;
• a plurality of cutting tips seated in the plurality of tip-receiving seats mounted to the base metal, wherein the cutting tips protrude radially outward from the base metal, wherein each of the plurality of cutting tips includes:
• a rectangular box-shaped tip body and a rectangular box-shaped thin portion extending radially inward from the rectangular box-shaped tip body,
• wherein the rectangular-box shaped tip body has a cutting edge at an intersection of a rake face on a front side of the rectangular-box shaped tip body relative to the rotational direction and a flank on a radially outer side of the rectangular-box shaped tip body, wherein the cutting edge extends in a thickness direction of the base metal,
• wherein a circumferentially extending groove is formed in the flank, and
• wherein a chip breaker is formed along the rake face and extends across an entirety of the rectangular-box shaped tip body in the thickness direction.