Abstract
The dynamic behavior of a ball screw under a moving grinding force and the resulting ball screw surface roughness are investigated. The system includes a ball screw, a headstock, a tailstock, a steady rest, a grinding wheel, and a wheel head. Equations of motion of the system are derived through Lagrangian approach combined with global assumed mode method in this study. The transient responses of the system due to a moving force are evaluated using Runge–Kutta method. Results show that the steady rest can reduce 90% vibration in a grinding process. An equation is proposed to predict the maximum response by the cutting depth. Then we simulate the grain height distribution on the grinding wheel, considering transient response on the ball screw and the grinding wheel. Lastly, the ball screw surface roughness could be simulated via calculating the depth of all working grains. The purpose of using grinding process is that the ball screw needs fine surface roughness. The ball screw surface roughness is influenced by the grain size more than the structure numbers can be.
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Shiau, TN., Chen, KH., Wang, FC. et al. The effect of dynamic behavior on surface roughness of ball screw under the grinding force. Int J Adv Manuf Technol 52, 507–520 (2011). https://doi.org/10.1007/s00170-010-2731-2
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DOI: https://doi.org/10.1007/s00170-010-2731-2