凸轮轴数控磨削工件主轴转速优化建模与实验研究

发布时间：2018-02-10 08:08

本文关键词： 凸轮轴工件主轴转速优化砂轮架加速度积分反求　出处：《中国机械工程》2016年05期 　论文类型：期刊论文

【摘要】：根据凸轮轴X-C轴联动恒线速度磨削加工数学模型,建立了砂轮架进给位移与速度、凸轮工件主轴转速的理论方程。根据数控凸轮轴磨床加工能力的约束条件,对砂轮架进给中速度、加速度或加加速度值超出限定值的凸轮转角区间,通过积分反求方法求解出相应转角区间工件主轴所允许的转速值,并以该段转速值替换对应的转角区间上凸轮轴恒线速度磨削时理论转速值。对优化计算前后的工件主轴转速曲线进行了凸轮轴磨削加工实验。实验结果表明:采用优化后的凸轮工件主轴转速进行加工,相比于恒线速度理论转速加工,其升程最大误差与最大相邻误差减小,工件表面粗糙度降低,提高了凸轮轴高效精密磨削加工质量。
[Abstract]:According to the mathematical model of camshaft X-C axis linkage constant linear speed grinding, the theoretical equations of grinding wheel frame feed displacement and speed, and cam workpiece spindle speed are established. According to the constraint conditions of NC camshaft grinding machine's machining ability, For the cam angle interval in which the speed, acceleration or addition velocity of the grinding wheel frame is in excess of the limited value, the allowable rotational speed of the workpiece spindle in the corresponding rotation angle interval is calculated by the inverse integral method. At the same time, the theoretical rotational speed of camshaft in constant linear speed grinding is replaced by the rotational speed value of this section. The experiment of camshaft grinding before and after optimization calculation is carried out. The experimental results show that: 1. Machining with the optimized spindle speed of the cam workpiece, Compared with constant linear speed theoretical rotational speed machining, the maximum error of lift and maximum adjacent error are reduced, the surface roughness of workpiece is reduced, and the quality of camshaft high efficiency precision grinding is improved.
【作者单位】：湖南大学;湖南科技大学难加工材料高效精密加工湖南省重点实验室;湖南海捷精密工业有限公司;
【基金】：国家自然科学基金资助项目(51175163) 国家科技支撑计划资助项目(2015BAF23B01) 高等学校博士学科点专项科研基金资助项目(20110161110032)
【分类号】：TG596

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