Woodworking – Process – Including monitoring of operation
Patent
1997-04-17
1998-08-11
Bray, W. Donald
Woodworking
Process
Including monitoring of operation
144213, 144365, 144392, 144408, 36447402, 36447409, B27B 100, B27C 100, B27L 502, G06F 1546
Patent
active
057913889
ABSTRACT:
A method of controlling the feed of the backup rolls of a log backup apparatus for use in a veneer lathe for preventing a log from bowing while veneer is peeled from the log. The method comprises the step of centripetally feeding the backup rolls from a control-start diameter .PHI. at a provisional feed rate f which is higher than a predetermined feed rate F by a feed rate of a pre-selected correction value .alpha. per log rotation. The aforementioned control-start diameter .PHI. is slightly larger than the diameter of the log at which the backup rolls are brought into contact with the log. The method further comprises the steps of stopping the centripetal feeding of the backup rolls at the provisional feed rate f when the bowing is eliminated from the log and thereafter centripetally feeding the backup rolls at the predetermined feed rate F, thereby eliminating the bowing that occurs during the veneer peeling from the log.
REFERENCES:
patent: 4396049 (1983-08-01), Calvert et al.
patent: 4893663 (1990-01-01), Ely
patent: 5016692 (1991-05-01), Cremona
patent: 5141038 (1992-08-01), Nakaya
patent: 5452220 (1995-09-01), Ely
patent: 5564253 (1996-10-01), Nakaya
Bray W. Donald
Meinan Machinery Works Inc.
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