Rotating saw blade having improved critical vibrational speed

Details Rotating saw blade having improved critical vibrational speed Rotating saw blade having improved critical vibrational speed

1989-09-13

1990-12-25

Yost, Frank T.

Cutting

Tool or tool with support

Toothed blade or tooth therefor

B27B 3308

Patent

active

049794175

ABSTRACT:
A circular saw utilized for ripping lumber (or cutting any other work piece material) is provided with a step taper construction. The step taper construction occurs between concentric circular members of decreasing thickness to the periphery of the saw, this construction raising critical rotational speeds to enable lower saw kerf or greater operating speeds of the saw. The saw includes a thick central concentric hub member having a thickness greater than that of the cutting path or kerf of the saw. An intermediate concentric member begins at a step taper at the concentric hub and extends the radial distance from the hub to the saw periphery. Intermediate radial member typically extends into the kerf of the saw at a diameter less than the kerf and has a thickness less than that of the kerf. An exterior tooth supporting concentric member of the saw extends from the intermediate concentric member to the supported saw teeth on the exterior of the saw. This final exterior tooth supporting concentric member commences from a second step taper at the exterior of the intermediate concentric member and has a thickness less than that of the intermediate concentric member. It is common, but not required, that the disclosed step taper construction be in combination with conventional prestressing of the saw, such as that produced by symmetrical stressing or asymmetrical stressing.

REFERENCES:
patent: 334440 (1886-01-01), Ireland
patent: 614053 (1898-11-01), Johnson
patent: 640279 (1900-01-01), Dickerson
patent: 1689618 (1928-10-01), Brown
patent: 4157673 (1979-06-01), Bruno

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