| 摘要 |
<p>A method of operating a press machine having a servomotor (20) and a servo controller therefor are disclosed. The speed at which a tool secured to a ram (36) of a mechanical press machine (1) applies an impact to a workpiece for plastic working is decelerated immediately before the tool strikes against the workpiece in order to reduce the noise generated when the impact is applied. The speed and positional locus of the ram (36) are set for each step using respective setting switches provided on a panel. The servomotor (20) is program-controlled according to the data input through the respective setting switches. <IMAGE></p> |
