球形零件在机械制造业中应用较广。随着现代工业的发展,对球面的精度和光洁度要求越来越高。某些量仪的球面直径允差仅几微米,而圆度允差仅零点几微米,甚至零点零零几微米,光洁度要求高达▽13。这就要求具有极高精度的磨床和成形砂轮修整工具。 Spherical parts in the machinery manufacturing industry is widely used. With the development of modern industry, the accuracy and finish of the spherical surface are getting higher and higher. Some meters have a spherical diameter tolerance of only a few microns, while the roundness tolerance is only a few tenths of a millimeter, or even a few hundred and ten microns, and finish requirements are as high as ▽ 13. This requires extremely precise grinding machines and forming wheel dressing tools.