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剃齿接触变形区域的弹塑性变形是影响剃齿中凹误差的重要因素,弹塑性应力分析是分析弹塑性变形的前提。应用Hertz理论建立了剃齿过程接触变形区域的局部坐标系,构建了弹、塑性应力分析模型,分析了剃齿接触变形区域的弹、塑性应力,提出了接触变性区域的弹性应力计算公式和由塑性变形产生的残余应力计算公式,得到了剃齿加工过程接触变形区域的弹性屈服极限应力值,并以此值为判据,作为区分被剃齿轮接触变形区域的弹性变形和塑性变形的理论分界值,这为定量分析被剃齿轮接触变形区域的弹塑性变形的性质提供了方法。
Elasto-plastic deformation of the contact area of the shaving tooth is an important factor affecting the concave error in the shaving. Elastic-plastic stress analysis is a prerequisite for analyzing the elastic-plastic deformation. Hertz theory was used to establish the local coordinate system of the contact deformation area of the shaving process. The elastic and plastic stress analysis models were established. The elastic and plastic stresses of the contact area of the shaving tooth were analyzed. The elastic stress formula of the contact degeneration area The formula of residual stress generated by the plastic deformation is obtained and the elastic yield stress of the contact deformation area of the shaving process is obtained. Based on this value, the theoretical boundary of the elastic deformation and the plastic deformation of the shaving gear contact deformation area Value, which provides a method for quantitative analysis of the elasto-plastic deformation properties of the area contacted by the shaving gear.