通过大量有限元分析和优化设计数值计算方法研究了楔形角、榫头颈宽、榫槽高度、上侧角、下侧角及拉削角等齿形基本参数对榫接结构强度的影响,并根据计算结果设计了新的结构模型,经过实验验证,新结构最大应力有所改善.研究表明,可以采用二维有限元分析结果来研究齿形基本参数对榫接结构应力分布的影响,但是其不能反映应力在轴向方向的变化。 The effects of basic parameters such as wedge angle, tenon neck width, tenon groove height, upper side angle, lower side angle and broaching angle on the strength of mortise and tenon joints were studied by means of a large number of finite element analysis and numerical calculation methods. The results show that the maximum stress of the new structure is improved by experiments.The results show that the influence of the basic parameters of the tooth profile on the stress distribution in the mortise and tenon structure can be studied by the two-dimensional finite element analysis results, but it can not Reflects the stress changes in the axial direction.