摘要:
A servo drive system of a punch press uses a servo motor as a power source of a ram. An operation shaft which vertically moves the ram is directly driven by using the servo motor which can generate necessary ram pressure by using a torque based on speed-torque characteristics of a motor. The servo motor has a control power driver, the power driver being provided at its front stage with a reactor which suppresses peak current by cutting off high frequency current component, and a capacitor which supplies electric energy which becomes short due to suppression of the peak current.
摘要:
A continuous working system of a press machine uses a servo motor as a power source of a ram. An operation shaft which vertically moves the ram is directly driven by using a servo motor which can generate necessary ram pressure by using a torque based on speed-torque characteristics of a motor. The operation shaft is continuously reciprocated and turned through an angle range corresponding to a distance between a predetermined lower end position required for press working by the ram and a position where the ram is returned from the lower end position and a lower end of the ram is separated from a tool upper surface such that the ram vertically moves between these positions by the servo motor, thereby subjecting a work to a continuous press working.