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基于大型齿圈热处理过程中的椭圆变形问题,分析了其影响因素,建立了椭圆畸变的受力模型。根据大型齿圈结构及热处理过程中的变形特点,设计了实验方案以探究其椭圆变形规律并预测引起齿圈变形的等效力。探索了改善大型齿圈椭圆变形的热处理工艺,提出了控制齿圈椭圆畸变的补偿方法并应用于实际生产。结果表明:大型齿圈热处理椭圆变形随齿圈外径增大呈线性增加。对于JS150/06系列大型齿圈,在原热处理工艺前增加高温回火工序,椭圆变形可减小45.5%;通过应力补偿方法椭圆变形可有效减小79.6%。
Based on the problem of ellipse deformation during the heat treatment of large ring gear, the influencing factors were analyzed and the force model of elliptical distortion was established. According to the structure of the large ring gear and the deformation characteristics in the heat treatment process, the experimental scheme was designed to explore the elliptical deformation law and predict the equivalent force that caused the ring gear deformation. Explore the heat treatment process to improve the elliptical deformation of large ring gear, and put forward the compensation method of controlling elliptical distortion of ring gear and apply it to practical production. The results show that the elliptical deformation of large ring gear increases linearly with the increase of outer ring gear diameter. For JS150 / 06 series large ring gear, the high temperature tempering process is added before the original heat treatment process, the elliptic deformation can be reduced by 45.5%; the elliptical deformation can be effectively reduced by 79.6% through the stress compensation method.