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以啮合原理为基础,在Pro/E环境下研究了弧齿锥齿轮三维精确设计方法。通过齿轮曲线方程生成齿槽大、小端球面渐开线以及齿根、齿顶处的齿形曲线,并沿齿宽方向插入若干辅助球面渐开线;利用边界混合功能沿各渐开线及齿形曲线扫描建立齿槽齿面片体,由其切割齿形坯得到齿槽实体;将齿槽实体和齿形坯进行布尔减运算并环形阵列,最后添加轮毂实体,从而实现了弧齿锥齿轮的参数化精确建模。经虚拟装配检验,齿轮副啮合过程中无干涉现象发生。文中的参数化精确建模方法为弧齿锥齿轮三维设计与分析提供了有效途径。
Based on the principle of meshing, the 3D accurate design method of spiral bevel gear was studied in Pro / E environment. The gear curve equation is used to generate the large and small involute splines and the tooth profile at the tooth root and addendum. Several auxiliary involute spheres are inserted along the tooth width direction. By using the boundary blending function, Tooth profile curve to establish the tooth surface slice body, and the tooth body is obtained by cutting the tooth shape body; the cogging body and the tooth shape body are subjected to the boolean subtraction operation and the annular array, and finally the wheel body is added, Accurate parametric modeling of gears. After the virtual assembly test, gear meshing process without interference occurs. The parametric accurate modeling method in this paper provides an effective way for 3D design and analysis of spiral bevel gears.