Patent ID: 8857326

Claim:
An electric servo press machine, which converts a rotation of an electric servomotor into a reciprocating linear motion of a slide through an intermediation of a power transmission/conversion mechanism, and utilizes the reciprocating linear motion of the slide to perform press working on a workpiece, the electric servo press machine comprising: a clutch mechanism interposed in a power transmission path between the electric servomotor and the slide; and a brake mechanism capable of applying a brake onto a motion of the slide under a disconnected state in which the electric servomotor and the power transmission path are decoupled from each other by the clutch mechanism, the electric servo press machine being configured to: bring the clutch mechanism into the disconnected state and apply the brake onto the motion of the slide by the brake mechanism in response to an immediate stop request; and recover from immediate stop under a state in which a phase shift between the electric servomotor and the power transmission path ranging from the clutch mechanism in the disconnected state to the slide is eliminated under a connected state of the clutch mechanism.