Cutting – Tool or tool with support – Toothed blade or tooth therefor
Patent
1986-08-25
1988-08-30
Kazenske, E. R.
Cutting
Tool or tool with support
Toothed blade or tooth therefor
83848, 83851, B27B 3308
Patent
active
047667940
ABSTRACT:
A radial saw blade is formed of a flat disc having peripheral edge including circular peripheral portions and recessed stepped peripheral portions. The peripheral edge includes spaced apart, radially inwardly extending notches. Each notch has a flat, plate-like insert brazed to an L-shaped seat in the notch facing the direction of rotation. Each insert has cutting edges formed on side edges of the inserts which extend axially from both sides of the disc and on a crown edge extending radially from the peripheral edge of the disc. The side and crown edges each have beveled surfaces extending away from the direction of rotation to define a relief angle. A first set of the notches are positioned about the circular peripheral portion of the peripheral edge. The inserts in the first set of notches make the primary cut in both linear and non-linear passes. A second set of notches are circumferentially spaced along the recessed peripheral portions, or stepped portions, of the blade and are located at different radial distances from the center of the disc. The side cutting edges of the inserts in the second set of notches radially overlap the side cutting edges of radially adjacent cutting inserts in the second set of notches. The inserts in the second set of notches plane the raw cut edges cut by the first set of inserts on straight cuts. The inserts in the second set of notches also cut in the axial direction relative to the disc for curved and diagonal cutting to prevent the blade from binding in the kerf by providing axial relief.
REFERENCES:
patent: 1711102 (1929-04-01), Sierra, Jr.
patent: 2756787 (1956-07-01), Siese
patent: 3347289 (1967-10-01), Kotesovec et al.
patent: 3576200 (1971-04-01), Elmes
patent: 3831484 (1974-08-01), Gibb
patent: 4011783 (1977-03-01), Mobley
patent: 4024785 (1977-05-01), Jansen-Herfeld
Kazenske E. R.
Phan Hien H.
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