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a) The workstation sets two operation stations, each welding fixtures is fixed, and the workpieces are alternately loaded and unloaded, and the robot automatically completes the welding. At each loading and unloading station, there is a grating to ensure the safety of the operator.
b) When the worker loads and unloads the workpiece, the robot will never enter the area. When the robot welds the workpiece, if the person enters the area, the robot will stop running immediately.