In the press assembly station, the use of servo electric cylinder can achieve high-precision position control and speed control and torque control, the pressure accuracy of this case is 5%, the displacement accuracy of 0.01mm. In the pressing process, the segmented pressing is often used in the pressing equipment to ensure the optimization of the pressing force distribution and the optimization of the time distribution. Sectional pressing can be divided into 5 steps: a empty stroke: servo electric cylinder telescopic rod fast movement close to the workpiece. b Pressure test section: Detect whether the workpiece is square, if there is no force alarm number, terminate the downward pressure movement. c press assembly section: set the output force and walking displacement of the electric cylinder, set the force and displacement alarm, and detect whether the workpiece press assembly is normal. d pressing section: Delay 50ms after reaching the output force and displacement, and the holding time can be set. e return section: After the press assembly, the electric cylinder is quickly returned. f Seeking the origin section: the electric cylinder in the return section backs to the upper limit of the travel, and then moves downward to stop the movement at the origin position.
