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Maintenance for Z-Axis Ball Screws
Alloy Wheel Repair CNC Machine
In previous article, we have had discussions about one of the most important maintenance jobs for mechanical components installed on all Alloy Wheel Repair CNC lathes, that is, to keep both X-axis ball screw and Z-axis ball screw clean and lubricated. When ball screws are not cleaned and not lubricated as required, the work life span for these ball screws can be dropped as much as 85%.
Lehigh MR-2540 Alloy Wheel Repair Diamond Cutting CNC lathe
1. Alloy Wheel Repair CNC Lathe –Maintenance of Z-axis – Front Access
After removing the front cover, you will have full access to Z-axis ball screw.
View at the left end: Multiple locking screws circled in red shall be removed.
2. Alloy Wheel Repair CNC Lathe –Maintenance of Z-axis: Lubrications
The end view of the Z-axis ball screw and its sheet metal cover in full length.
Moving the cross slide to the other end before removing sheet metal cover.
Close look of piles of chips and dusts
Z-axis ball screw without top cover
It is also very important to verify and confirm that the automatic lubrication system is fully functional and the oil pipe from oil terminal going to the Z-axis ball screw provides enough oil on the Z-axis ball screw after cleaning job. Once again, in order to keep alloy wheel repair diamond cutting CNC lathe working correctly, both X-axis and Z-axis ball screws must be properly lubricated and kept clean all the time. For good machine shop practice, it requires full inspection on both X-axis ball screw & Z-axis ball screw every three month.
3. Alloy Wheel Repair CNC Lathe –Maintenance of Z-axis Servo Motor
The large sheet metal cover on the top of Z-axis servo motor
After removing this sheet metal cover on the top, you can locate the housing for Z-axis servo motor. The first thing to do is to clean all the small chips and dusts in this area. Then, the timing belt should be removed and replaced as part of the maintenance procedures
View after removing the cover.
Enlarged view for Z-axis servo motor.
View for old Z-servo motor timing belt
View of new Z-servo motor timing belt
As a short summary, Ball Screws play a critical role in the feed drive system of Alloy Wheel Repair CNC lathes which require higher precision delivering motion due to higher accuracy requirement of the machining quality. Therefore, it is very important to remember that the reliability and performance are critical standard for both X-axis ball screw and Z-axis ball screw. Furthermore, the proper maintenance on alloy wheel repair diamond cutting CNC lathe is critical to its performance over the long term. Keeping ball screws lubricated and free from contaminants extends their working lift and reduce the down time for your alloy wheel repair CNC lathe. The recommended maintenance schedule for both X-axis ball screw and Z-axis ball screw is every 3 months.