Analysis of the Thermal Behavior of a Ball Screw Based on Simulation and Experimental Investigation

Abstract:

Thermal expansion of ball screw system affects the machining accuracy of machine tools significantly. The objective of this paper is to analyze the thermal behavior and predict the temperature variation pattern of a ball screw based on finite element analysis and experimental investigation. Wireless temperature sensors are used to monitor the temperature variation of the ball screw system under different thermal conditions during both the warm-up and cooldown phases, so as to investigate its temperature variation pattern. Then an exponential algorithm is proposed to analyze and predict the temperature variation of the ball screw based on finite element analysis, and the actual thermal boundary conditions of the ball screw system are exactly defined according to the proposed algorithm and the experimental results. Finally, it was found that the simulation based on the thermal boundary conditions identified herein could match quite well with the experimental results.

• Periodical: Applied Mechanics and Materials (Volume 577)
• Pages: 140-144
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.577.140
• Online since: July 2014
• Authors: Zi Han Li*, Kai Guo Fan, Jian Guo Yang
• Keywords: Ball Screw, Experimental Investigation, Finite Element Analysis (FEA), Thermal Behavior

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