摘要
以GD-Ⅱ型电主轴为研究对象,首先根据动静态过盈理论初步确定过盈形式和过盈量的大小,然后采用有限元方法对电主轴连接结构进行三维建模,研究不同主轴转速条件下,电主轴初始过盈量的变化对主轴与转子间接触面的应力分布和扭矩传递能力的影响规律。通过分析发现,随着主轴转速的升高,接触面应力和扭矩的传递能力不断减小,且主轴转速越高,扭矩减小越快,研究结果表明,采用ф66H6/s6和ф65.9H6/t6的阶梯过盈量能较好地满足工作要求。
A GD-Ⅱ motorized spindle was introduced herein, the magnitude of step interference was also determined based on the dynamic interference fit theory, then the finite element model of the jointed structure was built and the effect of different initial interferences was also analyzed under dif- ferent running conditions. The analysis results show that the ability to transmit torque and the con- tact stress decrease with increasing spindle speed constantly, and the higher the spindle speed will lead to greater decreases of the transmitting torque capacity. The results also indicate that using 0-66H6/s6 and 465.9H6/t6 ladder interference magnitude can well meet the job requirements.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2013年第21期2933-2938,共6页
China Mechanical Engineering
基金
国家自然科学基金资助项目(50775043)
广东省科技计划资助项目(2011B090400427)
关键词
高速电主轴
动态阶梯过盈
有限元
应力分析
扭矩
high speed electronic spindle
dynamic step interference
finite element
stress analy- sis
torque
