CNC machine tool is the abbreviation of digital control machine tool. It is an automatic machine tool equipped with program control system. The control system can logically process programs with control coding or other symbolic instructions, decode them, use coded digital representation, and input them into the NC device through the information carrier. After operation, the NC device sends out various control signals, controls the movement of the machine tool, and automatically processes the parts according to the shape and size required by the drawings.
Fault Diagnosis Principle of CNC Machine Tool - Deep Hole Processing Manufacturers come to tell you
1. External first and then internal
CNC machine tool is a machine tool with mechanical, hydraulic and electrical integration, so the occurrence of faults must be reflected comprehensively from the three. Therefore, maintenance personnel are required to grasp the principle of first external and then internal, that is, when the CNC machine tool fails, maintenance personnel should adopt the methods of looking, hearing, asking and so on, and inspect one by one from the outside to the inside.
Faults caused by external hardware operation are common faults in NC repair. Generally, it is caused by the problems of testing switches, hydraulic systems, pneumatic systems, electrical actuators and mechanical devices. Some of these faults can be found by alarm information. For general CNC system, it has fault diagnosis function or information alarm. Maintenance personnel can use these information means to narrow the scope of diagnosis. Although some faults have alarm information, it can not reflect the real cause of the fault. At this time, it is necessary to analyze and solve the problem according to alarm information and fault phenomena.
2. Machinery before electricity
Because CNC machine tool is an advanced mechanical processing equipment with high automation and complex technology. Mechanical faults are easy to find, but system fault diagnosis is more difficult.
3. Quiet before moving
Maintenance personnel should first stop and then move, not blindly start. They should first inquire about the process and status of the operator's failure, check the instructions and information before they can start to find out the cause of the failure, and then troubleshoot.
4. Public use before special use
The problem of public utility will affect the whole situation, while the problem of specificity will only affect the part.
5. Simplicity before complexity
When there are many kinds of faults intertwined to cover up, and there is no way to start at the moment, we should first solve the easy problem, then solve the larger problem. Often in the process of solving simple faults, difficult problems may also become easier, clear thinking, will become more difficult easier.
6.First general, then special
When eliminating a fault, we should first consider the most common possible causes, and then analyze the special reasons which rarely happen.
