How to treat the independent innovation of the automatic control system of NC planer?

The traditional automatic control system of planer electrical equipment widely uses AC contactor automobile relay control system. Because of the selection of hard contact force and complicated wiring, the circuit system often has common faults at the contact point, so that the planer is often shut down for maintenance, which can not ensure all normal production and manufacturing.

A kind of automatic control system of CNC blade automatic walking is realized by using PLC to control speed regulating motor and speed reducing equipment. The program changes the original pedal cutting control organization, improves the cutting precision and enforceability, and has very good scalability, which can be widely used in a variety of CNC lathe cutting control system.

The system software of the main control chip of the planer is PLC, which completes the whole process automatic control system of all the work, including the left and right of the bearing beam, the movement of the tool table, the lifting and dropping of the tool, the automatic repeated movement of the operation table, the interlocking maintenance, the alarm, etc. Most of the hardware development of PLC is carried out according to the basic principle. In the design scheme, the output automobile relay of PLC is not used to drive the DC contactor immediately, but a 24 V DC relay is promoted behind each output contact point. Using the contact point of the automobile relay to drive the load can not only expand the output level, improve the practicability, but also have the maintenance effect on the output automobile relay of PLC. In the control system, the AC / DC ratio relay is replaced by PLC. The load-bearing beam elevator still uses the original motor, and the knife lifting still retains the original electromagnetic coil, but they are all controlled by PLC.

In the whole process of the renovation of the automatic control system of the electrical equipment of the numerical control planer, based on the scientific research of the structural characteristics and characteristics of various cutting organizations, a universal automatic control system of the tool table of the planer is developed. The system software uses PLC to cooperate with speed change equipment, greatly simplifies the structure of mechanical and electrical engineering system, and adds speed reducing equipment between the ball screw and the motor drive system of the tool table, which reduces the deviation caused by the reliability of speed ratio and the variability of start-up time, and ensures the precision of CNC blade.

Practical experience shows that the control system has excellent design, high cost performance, wide range of variable speed, simple structure, reliable operation and strong expansibility. It can be widely used in the renovation of automatic control system of electrical equipment of various types of planer, and also has very good practical value for variable speed operation of other AC / DC brushless motors.