| 摘要 |
<p>PURPOSE:To improve machining accuracy by providing an amplifying means variably amplifying the command speed of a control shaft and outputted the second speed control signal, a speed control means adding the second speed control signal to the first speed control signal in response to the follow-up error of the control shaft, and an amplification factor control means. CONSTITUTION:An amplifying means is fed with the command speed of a control shaft and amplifies the command speed with the optimum amplification factor determined from current machining conditions by an amplification factor control means and outputs the second speed control signal. A speed control means adds the second speed control signal to the first speed control signal in response to the follow-up error of the control shaft for use as the drive signal of a servo motor 23. As a result, the ratio that the constituent proportional to the command speed is contained in the drive signal of the servo motor 23 can be changed in response to the machining conditions, the follow-up property is improved, and machining accuracy can be improved.</p> |
