At present, the production technology of plasma cutting machine equipment for CNC machine tools in China has been relatively mature. The key common faults are concentrated on the reasons of spare parts and the common faults of switching power supply for plasma cutting of CNC machine tools. In addition, the relativity of internal equipment faults of machinery and equipment is less. When the plasma cutting of CNC machine tools can not work properly, the primary resolution attributes the common faults to the machine equipment, and ignores the inspection of the key points involved in the whole process. The common troubleshooting problems neglected the air compressor and plasma technology output power flame ultrasonic generator. The following will describe how to solve the arc breaking problem caused by the working pressure of plasma cutting on CNC machine tools and the common faults of flame ultrasonic generator.
1. Automatic ARC-BREAKING of CNC plasma cutting machine
當開展數控機床數控機床等離子切割的每日任務時，最先引燃低溫等離子弧，而且電級和噴頭內腔中間的汽體被高頻率震蕩器激起以造成高頻放電，進而使汽體一部分地 電離產生1個小弧，小弧被高壓氣。從噴嘴噴射以點燃電弧的作用是火花攻擊者的次要義務。在正常情況下，火花攻擊裝置的任務時間僅為0.5到1秒。 不自動斷開電弧的原因是控制電路板部件失去平衡，并且火花點蝕裝置的放電電極間隙不合適。此外，應始終反映火花插入電極，使其外觀平整，調整放電電極間隙（0.8~1.2mm）的火花情節，必要時更換控制面板。
When carrying out the daily task of plasma cutting on CNC machine tools, low temperature plasma arc is first ignited, and the vapor in the middle of the level and nozzle chamber is stimulated by high frequency oscillator to cause high frequency discharge, which causes a small arc to ionize part of the vapor, and the small arc is subjected to high pressure gas. It is the secondary duty of the spark attacker to ignite the arc by spraying it from the nozzle. Under normal circumstances, the task time of spark attack device is only 0.5 to 1 second. The reason for not automatically disconnecting the arc is that the control circuit board components are out of balance and the discharge electrode gap of spark pitting device is not appropriate. In addition, the spark insertion into the electrode should always be reflected to make its appearance smooth, adjust the spark plot of the gap between the discharge electrode (0.8-1.2 mm), and replace the control panel when necessary.
2. The plasma pressure of NC plasma cutting machine is too low to cause arc fracture.
In the daily task of CNC machine tool plasma cutting, if the standard pressure of daily task is much lower than the working pressure required by the instructions, it means that the low temperature plasma arc becomes weaker and the output cyclone is lower than the basic value. At this time, high efficiency energy and low temperature plasma arc can not be produced. Thus, the scene of poor quality of incision, incision and incision is formed. The reasons for lack of air pressure are: insufficient air output of air compressor, low pressure regulation of air conditioning valve of cutting machine, oil pollution in solenoid valve, and no lag in air path.
When using CNC plasma cutting machine, problems should be checked in time and solved quickly to ensure the normal work of CNC plasma cutting machine.http://www.dudleysmarina.com/