High-precision ball screw is one of the commonly used transmission mechanisms in machining at present. It has the advantages of high precision, high rigidity and high efficiency, and has been widely used in machine tools, industrial robots, numerical control equipment and other fields. However, with the continuous improvement of manufacturing technology and demand, the optimization of ball screw still faces many challenges. This paper will discuss several optimization methods.
1. Improve materials and processing technology
The performance of ball screw is influenced by material and processing technology. At present, some alloy materials with high strength, high hardness and high wear resistance have been widely used in the production of ball screws, such as high speed steel and cemented carbide. In addition, advanced heat treatment processes, such as vacuum quenching and plasma surface treatment, can also effectively improve the surface quality and mechanical properties of ball screws.
2. Optimize design and manufacturing accuracy
The design and manufacturing accuracy of ball screw have an important influence on its performance. Therefore, optimizing the design and manufacturing accuracy of ball screw can improve its performance, including the optimization of pitch, lead, radial clearance, back-and-forth clearance, axial deviation and other parameters of ball screw, as well as the improvement of machining accuracy, measurement accuracy and assembly accuracy.
3. Adopt new sealing technology
The ball and guide rail in the ball screw require high quality of lubricating oil, so effective sealing technology can ensure the service life and stability of the ball screw. At present, the use of high-precision rubber seals, sliding seals and composite seals can effectively prevent the leakage of lubricating oil and the entry of impurities, thus ensuring the stability and service life of ball screws.
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