摘要
基于螺旋铣孔的加工原理设计了螺旋铣孔专用主轴单元,为提高整个单元的精度,对主轴单元的关键部件在设计阶段早期进行了精度分配。对影响孔精度的主要因素进行了分析,分别使用改进的统计方法和遗传算法建立了精度分配模型,统计模型中考虑了权重影响系数和精度储备系数,从刀尖的位置和定位误差角度对主轴单元进行了精度分配。
In order to improve the whole accuracy of the spindle unit,tolerance allocation for individual key components of the spindle unit was carried out in the early design stage.The main influence factors on the final tolerance of the holes were presented through sensitivity analysis.Tolerance allocation model was established,using the improved statistical tolerance analysis method and GA,the weight coefficient and accuracy storage coefficient were thought out in statistical model.Improved statistical method and GA were all used to allocate the tolerance of the components in the spindle unit design stage with the consideration of the orientation and position errors of the tool tip.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2014年第20期2729-2734,共6页
China Mechanical Engineering
基金
河北省自然科学基金资助项目(E2014501077)
东北大学秦皇岛分校博士基金资助项目(XNB201315)
河北省高等学校科学技术研究项目(Z2013056)
关键词
螺旋铣孔
主轴单元
精度分配
改进的统计方法
遗传算法
helical milling
spindle unit
tolerance allocation
improved statistical method
genetic algorithm（GA）
