基于ANSYS Workbench的ZC1型蜗杆副瞬态动力学分析

摘要

为了研究圆环面包络圆柱蜗杆(即ZC1型蜗杆)副的动力学特性,分析了不同类型的蜗杆之间承载能力以及变形间的关系.利用有限元法,建立蜗杆副的动力学分析模型,在啮合瞬间进行瞬态动力学分析.首先,根据建立的蜗杆副的动力学模型,进行瞬态动力学分析,得到蜗杆副的接触应力、等效应力以及总变形.其次,对ZC1型蜗杆副与盘形锥面包络圆柱蜗杆(即ZK1型蜗杆)副的瞬态动力学性能及变形情况进行比较分析.结果表明:蜗杆副的应力、应变云图表明,啮合瞬间,蜗轮蜗杆至少同时啮合5对齿,可以清楚地看到最大应力在蜗杆螺旋线靠近中心附近;同等条件下,蜗杆副的接触应力较ZK1型蜗杆副减小超过23%;ZC1型蜗杆副的最大等效应力为ZK1型蜗杆副的84.5%;ZC1型蜗杆副较ZK1型蜗杆副具有较强的承载和抗变形能力.研究结论为ZC1型蜗杆在减速器等领域中的应用提供理论依据和工程应用价值.%The relationship of carrying capacity and deformation between different structure types of worm was analyzed for the purpose of acquiring the dynamic characteristics of the ZC1 worm gear.By using the el-ement method,the dynamic analysis model of worm was set up and transient dynamic analysis of meshing moment was analyzed. Firstly,by transient dynamics analysis which based on the dynamic model,the contact stress,equivalent stress and total deformation of the ZC1 worm gear were obtained,respectively.And then, the transient dynamic performance and deformation were analyzed and compared,respectively between the ZC1 worm gear and the ZK1 worm gear.The conclusion showed that the worm gear is at least engaged with five pairs of teeth,and we can distinctly see the maximum stress is at the tooth top.The contact stress of the ZC1 worm is reduced more than 23% compared with the ZK1 worm under the same condition.The maxi-mum equivalent stress of the ZC1 worm gear is only 84.5% of the ZK1 worm gear. Consequently,Com-pared with the ZK1 worm gear,the ZC1 worm gear has stronger anti-deformation and carrying ability.The research conclusions offer the theoretical basis and and engineering applications value for the ZC1 worm drive in the field of reducer.