Patent ID: 11858164
Assignee: MEINAN MACHINERY WORKS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  G  Y | IPC B

Claim 10:
11. A method for controlling a log feeding apparatus, the apparatus including a centering unit having first and second centering spindles that are capable of holding a log therebetween at the first and second end faces of the log in a longitudinal direction of the log, a transport unit including first and second clamping arm that are capable of holding the log therebetween, and first and second cutting spindles that are capable of holding the log therebetween, wherein the log fed to the centering unit is fed to the first and second cutting spindles by the log transport unit, the method comprising:
(a) feeding the log to the centering unit located at a receiving position;
(b) holding the fed log between the first and second centering spindles;
(c) calculating a cutting axis center line of the log by rotating the first and second centering spindles, and positioning the log at a rotational angle corresponding to the calculated cutting axis center line;
(d) moving the centering unit from the receiving position to a delivery position where the log is delivered from the first and second centering spindles to the first and second clamping arms, the delivery position being away from the receiving position downstream in a transport direction of the log by a distance equal to or greater than a maximum diameter of the log;
(e) feeding a new log to the receiving position after the centering unit has moved from the receiving position by the distance that is equal to or greater than the maximum diameter of the log;
(f) when the centering unit has reached the delivery position, delivering the log from the first and second centering spindles to the first and second clamping arms; and
(g) feeding the log from the first and second clamping arms to the first and second cutting spindles.