摘要
齿轮精锻能生产齿形不需切削加工的净形锻件,因此在汽车及宇航等领域得到广泛的应用。精锻齿轮的精度主要取决于模具的精度及其结构。所以设计时必须合理地考虑到工作压力及组合凹模的过配合所产生的变形及应力状态。而且,模具的寿命主要由模具材料的机械性能及应力状态决定的。为了揭示微型汽车锥齿轮的应力状态及优化设计,本文用边界元对锥齿轮二层组合凹模进行了计算。计算结果揭示了应力危险区域、应力分布及过盈量对应力分布的影响。此外,根据计算结果,还确定了最佳过盈量范围。
The lifespan of Bevel gear forging die is mainly decided by its stress state.In order to reveal the stress state and optimal design of forging die of miniature automobile bevel gear,The program of boundary element method(BEM)has been developed and used to calculate the doubly reinforced die of precision forging of bevel gear.According to the program developed by authors, the characteristics of BEM program are given.On the basis of calculated results by BEM,the dangerous.tress region is determined and the effect of interference amount on the distribution of stress is revealed.
出处
《南昌航空工业学院学报》
CAS
1992年第2期31-39,共9页
Journal of Nanchang Institute of Aeronautical Technology（Natural Science Edition）
关键词
应力分析
边界元法
齿轮
模具
锻模
precision
Forging Die
Stress Analysis
Optimal Design
BEM
