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

Claim 8:
9. The log feeding apparatus according to claim 7, wherein
the log feeding unit includes a placing section on which the log is placed, said placing section having a reference portion that serves as a reference for calculating a temporary rotation axis center line of the log, and
the controller calculates a first distance from the reference portion to a temporary rotation axis center line of the new log placed on the placing section, using the second temporary diameter and a geometric shape of the placing section when the first and second centering spindles are holding the log,
the controller further uses the safe distance and the second distance by which the centering unit has moved from the second receiving position to the second delivery position, so as to calculate a third distance from a temporary rotation axis center line of the new log to the rotation axis center line of the first and second centering spindles with the centering unit being located at the second receiving position, when an axial distance between the rotation axis center line of the first and second centering spindles while the centering unit is moving from the second receiving position toward the second delivery position and the temporary rotation axis center line of the new log is the safe distance,
the controller further calculates a fifth distance by subtracting the first and third distances from a fourth distance, so as to cause the log feeding unit to move by the fifth distance, the fourth distance being a distance from the reference portion when the log feeding unit is at the first receiving position to the rotation axis center line of the first and second centering spindles when the centering unit is at the second receiving position.