How to Maintain the System of Cnc Milling Machine?

CNC milling machine is an abbreviation of a digitally controlled machine tool, which is an automatic machine tool equipped with a program control system. The control system can logically process and decode a program specified by a control code or other symbolic instructions, thereby causing the machine to operate and process parts.

CNC milling machine consists of mechanical, electrical, hydraulic, lubrication, chip removal, etc.

The machine includes a turret, a screw, a spindle, a tailstock, a center frame, a bed, a cover, a magazine, and a turret.

Electricity includes control system control cabinet, there are servo drives, transformers, relays, contactors, input, and output, etc. in the control cabinet, display screen, motor, travel switch.

Hydraulics include hydraulic stations, hydraulic pumps, various valve hydraulic gauges, lubrication, lubrication pumps, lubrication lines.

The processing characteristics of small CNC milling machine are: accurate, fast, suitable for mass production, has nothing to do with operator experience, high production efficiency, can process parts with complex shapes and high precision requirements, and some ordinary machine tools cannot or The parts that are inconvenient to process are set to be able to process multiple processes after the clamping, and the processing quality is stable, which reduces the labor intensity of the operator.

CNC Milling Machine

How to maintain the system of the CNC milling machine?

1) Maintenance of the main drive chain

Regularly adjust the tightness of the spindle drive belt to prevent slippage caused by belt slipping; check the constant temperature oil tank of the spindle lubrication, adjust the temperature range, replenish the amount of oil in time, and clean the filter; after long-term use of the tool clamping device in the spindle There will be a gap, which will affect the clamping of the tool. It is necessary to adjust the displacement of the piston of the hydraulic cylinder in time.

2) Maintenance of ball screw thread pair

Regularly check and adjust the axial clearance of the screw thread pair to ensure the accuracy of reverse transmission and axial rigidity; regularly check whether the connection between the screw and the bed is loose; replace the screw protection device in time to prevent dust or Chips enter.

3) Maintenance of tool magazine and tool changing robot

It is strictly forbidden to put overweight and long tools in the tool magazine to avoid the robot from changing the tool or the tool colliding with the workpiece and fixture when changing the tool; often check whether the return position of the tool magazine is correct and the position of the tool spindle return point In place, and adjust in time; when the machine is turned on, the tool magazine and the manipulator should be run dry to check whether each part is working properly, especially whether the stroke switch and solenoid valve can work normally; Normally, it should be handled in time.

4).Maintenance of hydraulic and pneumatic systems

Regularly clean or replace the filters or sub-filters of each lubrication, hydraulic, and pneumatic system; regularly perform oil quality inspection and replacement of hydraulic oil on the hydraulic system; and regularly divide the air filter into the air filter to drain water;

5). Maintenance of machine tool accuracy

Regularly check and correct machine level and mechanical accuracy. There are two methods of correcting mechanical accuracy: hard and soft. The soft method is mainly compensated by system parameters, such as screw backlash compensation, fixed-point compensation for each coordinate positioning accuracy, and machine tool reference point position correction. The hard method is generally performed during machine tool overhaul, such as rail repair, the ball rolling Pre-tightening of the screw nut pair, adjustment of backlash, etc.