© Mitsubishi
At Motek, Mitsubishi and Engmatec will be presenting a high-speed screwdriving station for inline operation in an assembly line. The system implements a screwdriving process based on the pick & place principle using vacuum suction cups. A robot of the type 'RP-5ADH' from Mitsubishi Electric with the corresponding robot controller 'CR1D' is used. The robot picks up the screws to be processed and inserts them into a switch strip at any position. Compared to conventional processing with the screw being shot into the mouthpiece of the screwdriver, the screwdriving process can be accelerated with the help of the robot and the integrated vacuum suction sleeve. The screwdriver works with a screwdriving time of around 0.8 s, i.e. including handling with a cycle time of ten screws in 18 s. In addition, the system controller takes the data for tightening torque and angle of rotation from each screw. In the application presented, for example, the Torx IP 8 screws have a tightening torque of 66 Ncm. The double-arm scara robots of the 'RP' series have been specially developed for micro-handling. The RP-5ADH is suitable for handling tasks with a payload of up to 5 kg and works with a repeat accuracy of ±0.01 mm in the X, Y and Z directions.
