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液壓類數(shù)控折彎機故障分析
Failure analysis of hydraulic numerical control bending machine
故障一：液壓系統(tǒng)無壓力。
Fault 1: no pressure in the hydraulic system.
1、比例溢流閥的電磁線圈是否得電，比例電磁線圈電壓是否符合要求，如上述原因，請檢查相關(guān)電氣原因。
1. Whether the solenoid coil of the proportional relief valve is electrified or not, and whether the voltage of the proportional solenoid coil meets the requirements, if the above reasons, please check the relevant electrical reasons.
2、檢查插裝閥是否卡死或主閥芯是否被卡死，以及阻尼小孔堵塞，如果是上述原因，請拆卸溢流閥清洗干凈，重新裝上。
2, check whether the cartridge valve is stuck or the main valve is stuck, and the damped hole is blocked. If it is the above reason, remove the overflow valve to clean and reinstall.
3、三相電源調(diào)相，導(dǎo)致電機反轉(zhuǎn)。
3, phase modulation of three phase power supply leads to motor reversal.
故障二：滑塊快速轉(zhuǎn)慢速，時間停頓過長。
Fault two: slider quickly turn slow, time pause is too long.
1、檢查油箱油面是否過低，充液口未被淹住，快進時油缸上腔充液吸空引起充液不足。如上述原因可以將油箱油液加至充液口上方5mm以上使充液孔完全被淹住。
1. Check whether the oil level of the fuel tank is too low, and the filling port is not flooded. For the above reasons, the tank oil can be added to the 5mm above the filling port to make the filling hole completely submerged.
2、檢查快進速度是否太快，引起充液不足。如上述原因可通過修改系統(tǒng)參數(shù)降低快進速度。
2, check whether the fast forward speed is too fast, causing insufficient fluid filling. For these reasons, fast forward speed can be reduced by modifying the system parameters.
3、檢查充液閥是否被完全打開，如果是因為油液污染，使充液閥的閥芯活動不靈活有卡滯現(xiàn)象引起充液不足。需要清洗充液閥重新裝上使閥芯靈活自如。
3. Check whether the filling valve is completely opened, if it is because of oil pollution, so that the valve spool of the filling valve is not flexible, there is a stuck phenomenon caused by insufficient filling. It is necessary to clean the filling valve and reinstall it to make the valve core flexible.
故障三：滑塊返程正常，快進正常，手動不能慢行向下，折板無力。
Fault three: slider return to normal, fast forward normal, manual not slow down, folded plate weak.
1、檢查控制充液控制油路的“二位四通”換向閥是否工作正常，如果是則引起充液閥未關(guān)閉，使上腔與油箱充液口相通，不能建壓。導(dǎo)致該閥不能正常工作的原因是沒有通電或者被卡死。
1. Check and control the "two - position and four - way" reversing valve of the oil filling control oil way to work normally, if it is, the valve is not closed and the upper chamber is connected with the tank filling port, and the pressure can not be built. The reason why the valve does not work properly is that the valve is not energized or jammed.
2、檢查充液閥是否被卡死，如是，請清潔充液閥，重新裝上，至使閥芯靈活自如。
2, check whether the filling valve is stuck. If yes, please clean the filling valve and reinstall it, so that the spool is flexible.
故障四：滑塊返程速度太慢，回程壓力高此類故障主要是充液閥未打開，此現(xiàn)象剛好與上述故障三的現(xiàn)象邏輯關(guān)系相反，可參照故障三的解決方法進行處理。
Fault four: the return speed of the slider is too slow and the return pressure is high. The main fault is that the valve is not opened. This phenomenon is just contrary to the logic relation of the above fault three, and can be handled with reference to the solution of the fault three.