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E-mail
sales@yimingcnc.com
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Phone
13777298878
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Address
Ningbo South Binhai New Area, Ninghai County, Zhejiang Province
Ningbo Maituosi CNC Machinery Co., Ltd
The common faults and troubleshooting methods of CNC engraving and milling machines can be summarized as follows
Date: 2025-03-06Read: 8
As a high-precision machining equipment, the common faults and troubleshooting methods of CNC engraving and milling machines can be summarized as follows:
1. Spindle component malfunction
Spindle heating and noise:
Reason: Insufficient cleanliness of the spindle box or damaged bearings.
Solution: Clean the spindle box and add lubricating oil; If the bearing is damaged, replace the bearing.
Tool clamping mechanism malfunction:
Reason: The tool clamping mechanism may not be tightened due to insufficient spring clamping force or stroke switch issues.
Solution: Check and adjust the pressure and stroke switch device of the knife hydraulic cylinder.
2. CNC engraving and milling machine feed transmission chain failure
Decreased positioning accuracy:
Reason: Wear or insufficient preload of transmission components such as ball screw pairs and static pressure guides.
Solution: Improve transmission accuracy, adjust the preload of each motion pair, and eliminate unnecessary transmission clearances.
Increase in reverse clearance:
Reason: Similar to the decrease in positioning accuracy, it is mainly due to wear or looseness of transmission components.
Solution: In addition to adjusting the preload force, it is also necessary to consider the reasonable selection of the size and material of the screw to improve the transmission stiffness.
3. Automatic tool changer malfunction
The knife magazine cannot rotate normally:
Reason: Loose coupling, tight mechanical connection, or motor malfunction.
Solution: Check and adjust the relevant bolts and mechanical connection parts; If the motor malfunctions, it needs to be replaced or repaired.
The motion error of the robotic arm is large:
Reason: Accuracy issues with the robotic arm itself or inaccurate control signals.
Solution: Calibrate the motion accuracy of the robotic arm; Check whether the signal output of the control system is accurate and make corresponding adjustments.
Falling knife phenomenon:
Reason: Insufficient pressure of the spring clamping claw or incorrect installation of the tool.
Solution: Adjust the pressure of the spring clamping claw; Ensure that the tool is correctly installed on the handle.
4. CNC engraving and milling machine axis movement position stroke switch pressing fault
Reason: The travel switch is aging, damaged, or displaced in position.
Solution: Regularly check and replace the travel switch; Adjust the position of the travel switch to ensure its accuracy.
5. The servo axis cannot return to the origin or the origin is inaccurate
Reason: System parameter abnormality, servo drive abnormality, feedback abnormality, or switch abnormality.
Solution: Enter normal parameters; Exclude servo drive abnormalities; Handle disconnection situations; Replace the switch.
6. Spindle speed fluctuation
Reason: spindle bearing wear, spindle motor failure, electrical control system failure, or spindle cooling system failure.
Solution: Take corresponding measures based on the specific reasons, such as replacing the spindle bearings, checking the internal faults of the motor, repairing or replacing electrical control components, checking the spindle cooling system and cleaning or replacing the faulty parts.
