The debugging of the basic functions of CNC machine tools is an important part of the debugging work of CNC machine tools, mainly the technical personnel of CNC machine tools manufacturers in the user site through the setting of the parameters of the machine to complete, but this technology is not as a training content, not open to the user maintenance personnel. However, in the use of CNC machine tools, due to operational errors and other reasons, resulting in the loss of part or all of the parameters of CNC machine tools resulting in part or all of the loss of function has occurred from time to time.

If you want to restore the function of CNC machine tools, it is necessary to CNC machine tool manufacturers for help, their services are not only remunerated, but also can not guarantee to provide services for users at any time, so it will inevitably bring unnecessary trouble to users. So, for the unit using CNC maintenance personnel, learning basic functional recovery methods and techniques, numerical control machine tool can not only ensure nc machine tools in their own units for repair in time, and can make the control function of the CNC maintenance personnel for nc machine tools have a more comprehensive understanding, help to develop a mind map, improve the efficiency of routine maintenance.

The restoration and debugging of the basic functions of CNC machine tools mainly include the setting of the parameters of CNC machine tools and the testing of the functions of CNC machines, among which the setting of parameters is the most critical and important work. So, what are the parameters that determine the basic functions of CNC machine tools, and what is their role and significance? 2.1 Role and classification of parameters is an important parameter of CNC machine tool CNC system, it completes the matching between the CNC system and the structure of the machine tool and each function of the machine tool, and these parameters are classified according to the functional group, so as to control the operation of the CNC system.

For example, the servo shaft parameters configuration NC machine shaft number, servo motor parameters, speed and position feedback element type and feedback element parameters, serial communication port parameters in serial interface data transmission, baud rate, stop bit and other parameters allocation, etc. Taking CK0625 CNC lathe as an example, this paper introduces the servo shaft of FANUC0I-MATE -TC CNC lathe and the meaning of servo parameters. (1)1825# Parameter: the gain of the CNC machine tool operation and programming servo ring on each axis, that is, the gain of the control ring is set on each axis. For linear or circular interpolation, the gain of the servo ring on each axis must be set to the same value. With the increase of loop gain, the response speed of position control is accelerated, but the setting value is too large, which makes the servo system unstable.