Patent ID: 7187996

Claim:
A press machine comprising: a crankshaft; a motor connected to the crankshaft and driven to rotate reversibly; a slide moving up and down by rotation of the motor; a control section controlling the up and down movement of the slide; and a motor drive control section controlling the drive of the motor based on an output from the control section, wherein the control section comprises a position control system, a control mode switching control section and a pressing force control system, wherein the position control system moves down the slide from an initial position to a pressing region by controlling the motor to rotate regularly; wherein when the slide is determined to exist in the pressing region, the control mode switching control section substitutes the position control system with the pressing force control system; and wherein the pressing force control system performs pressing by moving down the slide such that a slide pressing force becomes equal to a set pressing force by controlling the motor to rotate regularly.