| 摘要 |
PURPOSE:To enable a desired added twist angle to be provided accurately as a whole by dispersely and additionally assigning pulse number equivalent to a numerator to data number equivalent to a denominator. CONSTITUTION:For example, a twist angle is set to omega=30 degree and NC data number in one pitch is 360 with total number of 1800 as a condition. An increment theta per data at a twist angle omega is theta=1/60. thetap in pulse conversion (1 pulse=0.005 degree) is thetap=10/3=3+ 1/3(pulse/data). Where the denominator of 1/3(pulse/data) is a number of data and the numerator number of pulse. Namely, the 1/3(pulse/data) can be realized by sending 1 pulse for every 3 data. Since thetap=3+ 1/3, an angle that can be obtained with 360 data per pitch by periodically sending 3 pulses 3 pulses 4 pulses is 6 degree or an angle of 30 degree with total of 1800 data. This becomes omega=30 degree mentioned above.
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