本文件参考ISO 230-1规定了3.1和3.2中定义的正常精度数控（NC）车床和带水平工作主轴的车削中心的几何试验。它还规定了与上述试验相对应的适用公差。 适用时，本文件也适用于卧式主轴转台和单轴自动车床。 本文件解释了数控车削机和车削中心的不同概念或配置以及常见特征。它还提供了受控轴的术语和名称。 本文件仅涉及机器精度的验证。它不适用于机器的运行测试（例如振动、异常噪音、部件的粘滑运动），也不适用于机器特性（例如速度、进给），因为这些通常是在测试精度之前进行的检查。

This document specifies, with reference to ISO 230-1, the geometric tests on normal accuracy numerically controlled (NC) turning machines and turning centres with horizontal work spindles as defined in 3.1 and 3.2. It also specifies the applicable tolerances corresponding to the above-mentioned tests. Where applicable, this document also applies to horizontal spindle turret and single spindle automatic lathes. This document explains different concepts or configurations and common features of NC turning machines and turning centres. It also provides a terminology and designation of controlled axes. This document deals only with the verification of the accuracy of the machine. It does not apply to the operational testing of the machine (e.g. vibration, abnormal noise, stick slip motion of components) nor to machine characteristics (e.g. speeds, feeds) as such are checks generally carried out before testing the accuracy.