摘要
渐开线齿轮齿根过渡曲线是影响齿根弯曲应力的重要因素,该过渡曲线由滚刀刀顶圆角展成。为提高齿轮弯曲强度,采用不同半径的圆弧描述该圆角,并推导了最佳圆角半径的计算公式。运用ANSYS的APDL语言对不同半径圆角滚刀加工的齿轮进行了参数化有限元建模,并通过ANSYS/FE-SAFE软件对特定载荷下齿根弯曲疲劳进行了分析。结果表明,选择最佳的圆角半径可使齿根应力减小4.9%,弯曲强度提高43%。
The fillet curve of involute gears processed by hob tip fillet is the important factor which affects the root bending stress. The goal is to improve tooth bending strength by using arcs with different radius to describe the hob tip curve and the formula for computing the best fillet radius is derived. Parametric finite element model of gear is founded by APDL and bending strength under specific load is analyzed by ANSYS/FE - SAFE software. The results show that bending stress is reduced by 4.9 % and bending strength is increased by 43 % by choosing the best tip fillet hob.
出处
《机械传动》
CSCD
北大核心
2013年第3期27-30,共4页
Journal of Mechanical Transmission
基金
国家科技支撑计划项目(2012BAH32F05)
