Modal analysis and design optimizationon of spring end grinder with four wheels

HUANG Jin-gen， JI Lei， ZHENG Zi-jun
（Key Laboratory of E&M， Ministry of Education & Zhejiang Province， Zhejiang University of Technology，
 Hangzhou 310014， China）

Abstract： Aiming at the vibration of spring end grinder process，the finite element numerical simulation analysis method was used to study the dynamic characteristics of the spring end grinder with four wheel. Solidworks 3D software was used to create solid model of spring end grinder，the finite element analysis software ANSYS Workbench was applied to conduct modal analysis of the simplified model，then the inherent vibration mode and natural frequency of the each mode state were obtained. Structural weaknesses of the machine structure of spring end grinder were optimized and improved. The results indicate that the improvement of the dynamic characteristics through the improvement of the bed is conducive to improve the machine's lower order natural frequency. The first order natural frequency of the bed is increased by 57.2%，the first order modal natural frequency of the whole improved machine is increased by 103%，which stays away from the motor vibration frequency to prevent the occurrence of resonance.
Key words： spring end grinder； vibration； modal analysis； natural frequency； optimization improvements