Basic maintenance of press brake
There are three kind different press brakes: manual press brake, hydraulic press brake and CNC press brake. Hydraulic press brakes could be classified according to different method of synchronization; they are twisted shaft synchronization, mechanical-hydraulic synchronization and electro-hydraulic synchronization.
Before maintain hydraulic press bake, it needs to low up die to down die and then shut down machine until maintenance works done, if have to start up machine to make some operation, it should choose manual mode to ensure safety.
Maintenance of hydraulic bending machine includes:
- Check hydraulic circuit
(1) Check oil lever of oil tank, it also has to check it after repair hydraulic system, once oil level of lower than oil indicator, add hydraulic pressure oil to make sure there is enough pressure;
(2) Recommended hydraulic oil could be ISO HM46 or MOBIL DTE25;
(3) Change new oil after 2000 hours continuous working of new press brake, and after that, change new oil every 4000-6000 hours of machining, clean oil tank each time when replace used oil;
(4) Regular temperature of oil should be 35℃-60℃, can’t exceed 70℃, if temperature of oil is too high, it will affect oil quality and damaged relative accessories;
- Filter of hydraulic press brake
(1) Clean completely or replace present filter while change new oil each time;
(2) Change new filter if there is alarm relative to filter or oil is not clean;
(3) There is air filter on the oil tank, check and clean it every 3 months, it’s better to change new one after one year use;
- Hydraulic components
(1) Clean every hydraulic components of press brake every month(base plate, valve, motor, pump, oil pipes and etc.), to avoid dirt get in to recycling system; do not use any detergent;
(2) After one month use of new hydraulic bending machine, check if there is deformation of each bent position of pipes, if there is something abnormal , change with new ones, after two months of use, must tighten every connecting part of whole system, it needs to shut machine when do this job to release pressure of machine.