Form and position error of spherical, contour surface is also under the influence of grinder accuracy,sPhe-rical surface arc dressing and wear condition of grinding wheel and so on.

• 球面轮廓的形位误差还受到机床精度、砂轮工作表面的球面圆弧曲线修整精度及砂轮磨损均匀度等因素的影响。附图3幅。