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Six Important Aids In Repairing Ball Screws
There are six important concepts when trying to repair a ball screw. They are lubrication, examination of the ball screw’s initial condition, extensive cleaning, rebuilding the ball screw assembly, extended testing, and refurbishing.
Ball screws are used generally in highly-specialized industries like aircraft, missiles, machinery, precision assembly equipment and robotics industries. Ball screw components require regular maintenance and should be subjected to ball screw repair to keep performance high and help with troubleshooting failures. Although there might be varied causes of ball screw failures there are essential principles in repairing them. It is important to understand these principles to better know how ball screw repair is undertaken.
Applying a lubricant
Wear and tear is the main reasons why ball screws fail. This would occur when the re-circulating ball screw surface comes in persistent contact with the ball screw shaft’s hard surface. Over time, the ball screw surface becomes eroded and worn down. The lubrication is present to both repair this specific problem and also helps the ball screw function correctly and make it last longer. Selecting lubricant that best suits the component’s conditions is vitally important. You should avoid over lubrication since too much grease can make more pressure to ball nut return system and cause the tube to burst.
Consider the condition of ball screw before beginning to repair
Consider the ball screw’s condition before beginning repairs. Checking the ball screw’s drag torque and free running condition is included in this principle. The ball screw is also subjected to a health check focused on the main points that contribute to optimum ball screw performance. In order to determine if the ball screw is in repairable condition, refer to this principle.
Thorough cleansing
Until you clean the ball screw, you can’t continue fixing it. First the extent of the ball screw track is polished, and then ultrasonic cleaning and high-pressure washing are used to remove built-up grease and grime.
Repairing the assembly for the ball screw
Over-sized micron-graded precision ball bearings are rebuilt on the ball screw assembly. The pre-load level, conforming to DIN standards, is achievable through these means.
Extended testing
Ball screw units need to undergo extended testing. On motorized testing rigs, the running performance of ball screws is tested. To determine whether a ball screw meets the required standards and criteria extended testing is found to be helpful. You need to make a compilation of report when the ball screw testing passes the standard. The report details the criteria employed, drag torque graphs and other important information.
Giving it an overhaul
Methods such as plating or spraying are used to refurbish bearing end journals. These are regrinded later, with help of a precision multipurpose grinder. If it is necessary, fixing thread forms are also refurbished after comprehensive checking and cleaning. Wiper seals and such small details can be taken care of as needed.
The essential function of proper ball screw repair and maintenance is that it helps the device and operations successful and efficient.
For more information on ball screw repair you may visit http://www.motorcityrepair.com/BallScrewTemplate.html.
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