What are the hazards and safety precautions in repairing the punch in the workshop?
The maintenance of punching machines, like general maintenance of machine tools, has many hazards. Personally, I think there are the following aspects: 1, accidental start of punch and protection of rotating part. Pay attention to completely cut off the power supply during maintenance, and stop stamping at the top dead center of the slider; We can start the machine after the punch machine is overhauled. At this time, it is necessary to prevent the occurrence of punching (punching accidents are common machine failures). Note that the formwork must be dismantled first, and the dangerous area between the slider and the formwork can't be invaded by sundries or hands. 3, fasteners, small parts loose fall off and fly out. When the operator finds something abnormal, some parts actually break and fly. Be careful not to be too close to the punching machine, and wear safety protection articles during maintenance; 4. The hoisting of large parts is safe, and some large parts may be dismantled during maintenance, so it is necessary to hoist tools or machines. At this time, it is mainly to make safety preparations and protection, and to make clear the command of special personnel and not to work blindly; 4. Electric leakage, air leakage and oil leakage protection. When leakage occurs, cut off the power supply. When a leak is detected, the gas source can be turned off before treatment. Pay attention to the observation after the oil pump (especially the high-pressure oil pump) is started, and turn off the power supply when there is a problem. 6. Safety of aerial work. When the height of the punch exceeds 3m, the maintenance punch will climb to the top for inspection. At this time, attention should be paid to the protection of aerial work. Seat belts and safety ropes should be used correctly, and the ladder (stool) should be guarded by special personnel. Wipe the oil on it first to prevent slipping and injury.