Ball screw is used more in automatic mechanical equipment such as machine tool screw and grinding machining center, and has good operation support performance, wear resistance, service life and guide accuracy. As a key part of the ball screw power transmission, it is inevitable that the ball screw bearings will fail, and what should be done at this time?
As a professional bearing application engineer, the author of this paper gives a comprehensive solution to this problem, in order to help more mechanical operators.
Ball screw bearings
What if the ball screw bearing is damaged?
1. check the bearing status
Check bearing wear and clearance with special tools and instruments to see if there is any abnormal sound or vibration. Pay attention to the bearing for cracks, peeling or other physical damage.
2. Analyze the cause of bearing damage
Through a series of inspections, you can determine the specific causes of bearing damage, such as overload, poor lubrication, foreign body entry and other abnormal conditions. Only by identifying the cause of bearing damage can targeted maintenance measures be taken subsequently to prevent similar failure problems from occurring again.
3. maintenance and replacement of bearings
After the abnormal situation is handled, the ball screw bearing can be repaired or replaced. In most cases, bearing maintenance can only solve the problem briefly, and a lot of damage can not be repaired. According to the bearing type, a new ball screw bearing can be selected to replace it, so that the equipment can maintain a long-term working state.
Ball screw bearing disassembly and assembly steps
1. remove the equipment spindle guide rail guard plate, end cover, remove the ball screw at both ends of the fastening nut, here should pay attention to two top wire, remove after finding.
2. take out the bearing washer, remove the bearing seat flange, bearing seat screws, positioning pins and other parts, you can try to remove the bearing seat. If it is fixed tightly, it can be handled gently with a tool to avoid damage.
3. you can remove the old bearing, find the right type of new bearing installed on the bearing seat, to ensure that the bearing inner and outer ring and the journal, the bearing seat hole between the precision, tightening torque meet the actual requirements.
4. in order to make the bearing better use, it is recommended to remove the bearing frame, accessories cleaning, erase the attached dirt, rust, grease, etc., you can use fine sandpaper gently, do not use brute force disassembly, so easy to damage the bearing or screw structure.
5. according to the above steps to reinstall the bearing, bearing seat, fastening screws on the ball screw bearing, and then test whether the equipment can operate normally.
When the ball screw bearing is damaged and replaced with a new bearing, be sure to find the corresponding model, if you can not determine the model, you can consult VKUKEN, as a professional ball screw bearing manufacturer, by the technical staff to give professional advice to ensure that the bearing can operate normally.
Conclusion
When the ball screw bearing failure, do not panic, first shut down the mechanical equipment, and then according to the method given in this article to troubleshoot the cause and solve the problem. It is important to remind the mechanical equipment operator to establish a work log, regularly check and maintain each part of the mechanical equipment, and sometimes the failure of other parts will also affect the bearing.
