锻压技术

偏心套转速对螺旋锥齿轮摆辗成形的影响

英文标题：Influence of eccentric sleeve rotational speed on rotary forging of spiral bevel gears

作者：高玉凡朱春东朱兴元王莹珺

分类号：TG331

出版年,卷(期):页码：2019,44(5):41-46

摘要：

摆辗成形过程中不同的上模运动轨迹对螺旋锥齿轮的摆辗成形有重要的影响，而上模的运动轨迹由内外偏心套的转速决定。单辊摆辗过程中，偏心套转速的改变会引起玫瑰线和螺旋线运动周期和轨迹形状的改变。以材料为20CrMnTiH钢的螺旋锥齿轮为研究对象，通过UG建立了三维有限元模型，并利用Deform3D详细研究了当偏心套转速不同时，轨迹运动周期和轨迹形状的变化对摆辗成形螺旋锥齿轮成形力能参数、变形均匀性、齿根损伤因子和接触面积的影响规律。结果表明：不同的偏心套转速对玫瑰线和螺旋线摆辗成形螺旋锥齿轮的影响规律具有相似性，螺旋锥齿轮在玫瑰线和螺旋线轨迹摆辗成形过程中取周期T=3 s、转速比|n1/n2|=6/7较为合适。

The different trajectories of upper die have an important influence on the rotary forging of spiral bevel gears, and the trajectory of upper die is determined by the rotational speed of the inner and outer eccentric sleeves. Therefore, the change of rotational speed of eccentric sleeve in the rotary forging process with single roller causes the change of motion period and trajectory shape of rose line and helical line. For the spiral bevel gear made by material 20CrMnTiH steel, a threedimensional finite element model was established by UG, and the influences of trajectory motion period and trajectory shape changes on forming force and energy parameters, deformation uniformity, root damage factor and contact area of spiral bevel gears in the rotary forging process were studied by Deform3D in detail under the different rotational speeds of eccentric sleeve. The results show that the influences of different eccentric sleeve rotational speeds on the spiral bevel gears formed by rose line and helical line rotary forging are similar, and the period T=3 s and the speed ratio |n1/n2|=6/7 in the process of roseline and helical line rotary forging are more suitable.

基金项目：

国家自然科学基金资助项目（51741506，51875427）

作者简介：高玉凡（1993-），男，硕士研究生 Email：gauvan@163.com 通讯作者：朱春东（1963-），男，硕士，教授 Email：zhuchundong@whut.edu.cn

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