Knife pitch control for veneer lathe

Details Knife pitch control for veneer lathe Knife pitch control for veneer lathe

1981-02-05

1983-07-12

Bray, W. D.

Woodworking

Veneer lathe

Knife or knife block

7386206, 144356, 364174, B27L 502

Patent

active

043925197

ABSTRACT:
A veneer lathe having power spindle means for rotating a log on the spindle axis, a knife carriage disposed for movement transversely of said spindle axis, a knife rockably mounted on the carriage for movement laterally of the spindle axis, means for adjusting the pitch of the knife as it is moved toward the spindle axis, and means for correcting the pitch adjustment in accordance with lateral deflecting forces on the knife. A sensing device mounted adjacent the knife utilizes lateral deflection of the knife edge during the veneer peeling operation to generate a signal indicating the direction and amplitude of the deflection. The signal may be applied directly to a suitably calibrated deflection indicator. It may also be amplified and utilized to effect a correction in the pitch adjusting means so as to maintain the lateral forces on the knife in approximate balance, with a slight bias toward the wood.

REFERENCES:
patent: 2329541 (1943-09-01), Kuehnl
patent: 2477457 (1949-07-01), Hughes
patent: 2670263 (1954-03-01), Hall
patent: 2924968 (1960-02-01), Colten et al.
patent: 3161044 (1964-12-01), Harrison et al.
patent: 3244206 (1966-04-01), Bossen
patent: 3303693 (1967-02-01), Stedman
patent: 3596506 (1971-08-01), Wilson, Jr.
patent: 3680613 (1972-08-01), Daniels et al.
patent: 3826131 (1974-07-01), Pritschow
patent: 4197888 (1980-04-01), McGee et al.

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