Six Basic Principles Of Ball Screw Repair You Need To Understand
Ball screw repair follows 6 essential principles which include lubrication, examination of the ball screw’s initial condition, extensive cleaning, rebuilding the ball screw assembly, extended testing, and refurbishing.
Ball screws are used in highly-specialized industries such as aircraft, missiles, machinery, precision assembly equipment and robotics industries. Ball screw components should be subject to regular maintenance. The causes of failure may vary, but the essential principles for their repair do not. It is important to understand these principles to better know how ball screw repair is undertaken.
Applying a lubricant
For your information, routine wear and poor surface finish are the usual factors that cause ball screw failure. This would occur when the re-circulating ball screw surface comes in persistent contact with the ball screw shaft’s hard surface. Given enough time, the surface of the ball screw will succumb to wear and tear. Lubricated ball screws work better and last longer. Choosing the best lubricant is very important in order to best match the conditions of the component. It is also crucial to avoid over-lubricating, as this can contribute to pressure on the ball nut return system and, consequently, cause the tube to burst from too much grease.
Inspecting the primary status of the ball screw
Consider the ball screw’s condition before beginning repairs. This principle includes checking the ball screw’s free running condition and its drag torque. There is a need to examine the major factors that contribute to the ball screw’s best performance. This is necessary to determine whether the ball screw is in repairable condition, or not.
Thorough cleansing
Before any subsequent repairs are conducted, the ball screw component has to be cleaned. The length of the ball screw track is first polished and, to remove accumulated grease and dirt, it is also subjected to ultrasonic cleaning and high pressure washing.
Repairing the assembly for the ball screw
Large micron-graded precision ball bearings are created using the ball and screw method. This will help in getting an acceptable pre-load level, which also fits the DIN requirements.
Multiple examinations
For extended testing, ball screw units undergo these tests. Ball screws are tested on motorized testing rigs to ensure the highest running performance possible. It will require thorough testing to figure out whether a ball screw meets the necessary standards and criteria. An extensive test report is complied and logged when the bail screw completes the testing and passes. The report details the criteria employed, drag torque graphs and other important information.
Giving it an overhaul
Bearing end journals are refurbished using methods like hard-chrome plating or metal spraying. After this, they undergo regrinding using a precision universal grinder. If it is necessary, fixing thread forms are also refurbished after comprehensive checking and cleaning. Components like fixing key ways, wiper seals and other smaller details may also be cleaned and refurbished if needed.
The essential function of proper ball screw repair and maintenance is that it helps the device and operations successful and efficient.
To find out more information about ball screw repair, go to http://www.motorcityrepair.com/BallScrewTemplate.html.
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