直齿圆锥齿轮精锻成形工艺数值模拟研究

齿轮锻造成形是一个复杂的塑性大变形过程.传统的理论分析方法难以很好地分析其复杂的成形过程及成形规律,而有限元数值模拟可以弥补这一不足.通过基于刚塑性/刚粘塑性有限元方法的计算机模拟对直齿圆锥齿轮的温锻和冷锻过程进行了分析,对两成形方法中的模具载荷、应力和应变分布及温度场分布进行了比较.结果表明,温锻成形具有成形载荷小、应力数值小、温度分布均匀等优点.进行了相应的温锻工艺试验研究,为温锻成形技术在工业生产中的应用提供了理论依据.

Numerical simulation study on precision forging technology of straight bevel gear

The gear forging formation is a complicated and large plastic deforming process. The conventional analysis method is difficulty to analyze the forming process and its laws. But the application of FEM numerical simulation technology was used to solve this problem. The warm forging process and the cold forming process of the straight bevel gear were analyzed with computer numerical simulation based on rigid plastic/rigid viscoplastic finite element method. Some parameters, such as loads of mold, stress, strain and temperature in these two forming methods mare compared. Results indicate that the warm forging has some advantages just like small loads, small stress and well-proportioned temperatures, and the technology were researched experimentally. These provide academic gist for the industrial applications of warm forging technology.