Study on significant factors of stable dynamic stiffness and advanced assembly for precision fastening system by Taguchi method

Abstract

Precision assembly fastening is an indispensable part of technology. The clamping force of the precision fastening system maybe remain Table or decrease when the assembly is subjected to axial vibration. In the meantime, rotating for a long time at a very high speed will produce a very high temperature. When the temperature rises, it will greatly reduce the overall performance and accuracy of the precision fasten system. With the background of this problem, this research was started. In this study, experiments were carried out with a rotation dynamic percussion testing machine, and the Taguchi method was used to discuss the assembly of the precision fasten system with different parameters and conditions. The experimental control factors are the fitting clearance, bearing contact angles, and the viscosity of the lubricating oil. After getting the test value, the next step is a statistical analysis using the Taguchi method in stages to get the final optimal results of the experiment. The results showed that the bearing contact angle and the viscosity of the lubricating oil are important factors affecting the temperature rise of the bearing. The results of this experiment can be applied as a basis for assembling machine tools for the advanced manufacturing industry, aircraft industry, automotive light vehicles to heavy vehicles in the mining world, etc. This also aims to improve the accuracy and stability of the precision fastening system.