Daily maintenance and care guide for vertical machining centers

Daily maintenance and care guide for vertical machining centers

As precision machining equipment, the performance and life of vertical machining centers are closely related to daily maintenance. Standardized maintenance can not only reduce the failure rate,

but also improve machining accuracy and efficiency. The following is a concise and practical maintenance guide, which operators must strictly follow.

1. Check before daily use

Lubrication system

Confirm the amount of lubricating oil in key parts such as the spindle, guide rails, and lead screws to ensure that the oil circuit is unobstructed.

Check whether the lubricating oil is clean. If it is turbid or has impurities, it must be replaced immediately.

Air pressure and cooling system

The air compressor pressure must be maintained within the equipment requirements (usually 0.5~0.8MPa).

The coolant level must be sufficient and the filter screen must not be blocked to avoid overheating during processing.

Tools and fixtures

Check the tool wear and replace the passivated tool in time.

Confirm that the clamping force of the fixture is stable to avoid loosening during processing.

2. Precautions during operation
Abnormal monitoring

Monitor the sound of the equipment running, and immediately stop the machine for investigation if any abnormal sound (such as friction or impact) is found.

Observe whether the processing vibration is abnormal, which may be caused by tool imbalance or spindle bearing wear.

Cleaning management

Clean the chips of the workbench, guide rails and tool magazine after each shift to prevent the accumulation of iron chips and the decrease of precision.

Use special cleaning tools (such as air guns and brushes) to avoid scratching precision parts.

3. Weekly in-depth maintenance
Guide rail and lead screw maintenance

Wipe the guide rail and lead screw surface with a dust-free cloth dipped in special lubricating oil to remove dust and debris.

Check the preload of the ball screw to avoid reverse clearance caused by looseness.

Electrical system inspection

Clean the dust on the filter screen of the electric control cabinet to ensure normal heat dissipation and prevent overheating of the circuit board.

Check whether each terminal is tightened to prevent poor contact.

4. Monthly comprehensive maintenance
Spindle maintenance

 Run the spindle at low speed for 10-15 minutes and observe whether the temperature rise is normal (usually ≤60℃).

 Check the cleanliness of the spindle taper hole and use a special rod to clean the residual cutting fluid or debris.

Hydraulic and pneumatic system

 Replace the hydraulic oil filter and check whether the cylinder seal is aging and leaking.

 Exhaust condensed water in the air path to prevent the air valve from clogging.

5. Long-term shutdown treatment
 If the equipment is idle for more than 7 days, apply anti-rust oil to the guide rails and lead screws.

 Power on and run the spindle for 30 minutes every week to prevent the electrical components from getting wet.

6. Operation specifications
 Overload processing is strictly prohibited to avoid overloading the spindle or motor.

 Move each axis to a safe position before shutting down to avoid long-term pressure deformation.