| 摘要 |
PROBLEM TO BE SOLVED: To provide a solution to solve the problem of an amplifier 12A for a superimposing main shaft to raise an alarm by exceeding an adjustable capability for speeds, due to the fact that a pattern slope of the superimposing main shaft is less steeper than that of a standard main shaft, if the superimposing main shaft adjusts the speed according to the pattern of the standard shaft when the standard main shaft adjusts the speed during a control period of the superimposing main shaft. SOLUTION: A numerically controlled device has the standard main shaft and the superimposing main shaft, and controls a revolution number of the superimposing main shaft in respect to the standard main shaft. The device provides a means 23 to calculate the constant for adjustable speeds, which does not exceed the adjustable capability for the speeds of the amplifiers for both standard and superimposing main shafts. COPYRIGHT: (C)2004,JPO
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