斜面上钻孔与平面上钻孔相比，由于加工初期条件差，孔的相对位置精度低，刀具更容易折损。
Drilling on inclined surfaces has such problems as the decrease of hole accuracy and damage of tools compared with the drilling on flat surfaces.
介绍一种测量加工中心位置精度的仪器——平面正交光栅。
An instrument to measuring location accuracy of machining center, planar grid encoder, is introduced in this paper.
介绍了摩托车箱体、盖加工中的装夹变形、位置精度和平面密封保证等方面的工艺问题。
Technique issues such as clamping deformation, guarantee of hole position accuracy and plane seal, etc. for motorcycle case body and case cover are introduced.
本文分析了车床主轴热位移及其影响加工精度的机理，并提出了主轴中心线与主轴箱装配基面在同一垂直平面内和同一水平面内的最佳位置。
This paper discusses the thermal travel motion of a main shaft in machine tools, and the mechanism of its significant influence on manufacturing accuracy.
本文分析了车床主轴热位移及其影响加工精度的机理，并提出了主轴中心线与主轴箱装配基面在同一垂直平面内和同一水平面内的最佳位置。
This paper discusses the thermal travel motion of a main shaft in machine tools, and the mechanism of its significant influence on manufacturing accuracy.
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