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针对双锥辊辗压螺旋锥齿轮成形过程中型腔下模受力过大以及齿形充填高度不够的问题,首先,运用DEFORM-3D有限元软件对从动螺旋锥齿轮齿坯双锥辊辗压过程进行了模拟分析,研究了摩擦系数、辗压温度、凹模型腔进给速度对凹模型腔等效应力和Z方向成形齿高的影响;其次,采用正交试验设计方法,以凹模型腔等效应力和Z方向成形齿高为优化指标,得到了最佳工艺参数,并进行了数值验证;最后,通过数值计算分析以及与文献中研究结果进行比较分析,证明了从动螺旋锥齿轮双锥辊辗压成形工艺的可行性。结果表明:当摩擦系数为0.2、辗压温度为900℃、凹模型腔进给速度为2 mm·s~(-1)时,模具型腔受力最小,齿形的充填饱满,高度达到最高。
In order to solve the problem that the cavity under die is over stressed and the toothed filling height is not enough during the forming process of double cone roller, firstly, DEFORM-3D finite element software is used to analyze the double cone roller of driven helical bevel gear The effects of friction coefficient, rolling temperature and die cavity feed rate on the equivalent stress and the forming tooth height in the Z direction were studied. Secondly, using the orthogonal experimental design method, Equivalent stress and forming tooth height in Z direction are the optimal indexes, and the best technological parameters are obtained and verified by numerical verification. Finally, numerical analysis and comparison with the research results in the literature prove that the ratio of driven helical bevel gear double Feasibility of Tapered Roll Rolling Process. The results show that when the friction coefficient is 0.2 and the rolling temperature is 900 ℃, the cavity of the die cavity is the least stressed, the filling of the tooth shape is full and the height is the highest when the die cavity is fed at the speed of 2 mm · s -1 .