泵盖模零件是由端面梯形螺旋线和内梅花形孔组成的圆柱体零件（见图1），顺时针螺旋线方程为R=47＋（α°／60°），内梅花由R9．3和R30．7各8段圆弧相切连接而成。我厂采用车削中心加工此零件，方便快捷，取得满意结果.图1车削中心是集车、撞、铣、钻功能于一体的多功能车、铣 Pump cover mold parts are cylindrical parts consisting of trapezoidal spiral end faces and inner plum-shaped holes (see Figure 1). The clockwise helical equation is R = 47 + (α ° / 60 °), the inner plum is represented by R9.3 and R30.7 each 8 arc tangent connected. Our factory uses the turning center to process this part, which is convenient and fast, with satisfactory results.Figure 1 The turning center is a multifunctional car with the functions of car, collision, milling and drilling, milling