Electric turret CNC lathes failure analysis

Electric turret CNC lathes as important configuration plays a vital role in the operation of the machine, once the failure is likely to cause the workpiece scrapped, and even cause the chuck and turret collision accident. Failure in the maintenance of CNC machine tools, electrical control circuit complexity, symptoms varied, some less obvious symptom, more difficult to find, but more similar to the mechanical parts with common tools, the fault is relatively easy to exclude. Electric turret stations generally have four or six stations, the electric motor, mechanical tool changer, letter tray, etc., when the system sends a signal tool change, tool motor is transferred, via a reduction mechanism and the lifting mechanism on the tool body rose to a certain position, the clutch disc to work, to drive the cutter body rotation to the selected tool position, issued a letter disk cutter bit position signal, turret motor reversal, after the completion of the early positioning the cutter body drop, meshing teeth plate, completion of precise positioning and locking knife through the lifting mechanism. Turret failure occurs when the following phenomena:

A turret without tool change

For this failure, first determine the internal mechanical problem or turret turret motor failure. When a tool change, touch the motor, to see whether the vibration and measure the motor voltage to determine whether the motor failure. If the motor is normal, then it is a mechanical problem, generally for the knife stuck inside machinery. Remove the knife to clean reinstall. But sometimes it may be an internal mechanical damage.

2 turret lock is not tight

This failure may be locked turret machine parameters in the set time is too short, there may be an internal lock blade knife nut is too loose and the position of the transmitter coil and magnet Hall element is not aligned.

3 can not find pockets

Performance of turret stop switch. This problem may exist in the turret letter tray problems; problems CNC system tool signal receiving circuit; communication line failure problems.

No. 4 could not find a knife

Performance can not find a number knives, knives and other bits can be properly changed, the problem may be damaged turret letter tray Hall element generates a Hall element offset knife or the number or position of the knife the signal line circuit. Failure is usually the first two: the mechanically relatively easy to determine the cause and maintenance of the latter two electrical failure causes. In the actual production process, due to the turret plate causes the transmitter fault condition turret lathe more emphasis on the following principle analysis and diagnostic tool holder disc dispatch, maintenance.