ISO 3070-2:2016参考ISO 230-1、ISO 230-7和ISO 230-2，规定了几何试验、主轴试验和通过数控检查水平主轴镗床和铣床（具有沿X轴的可移动立柱）定位精度和重复性的试验，还规定了与通用机床相对应的适用公差，正常精度的机器。 这类机器通常配备滑动镗主轴，并可配备以下类型的通用主轴头，其测试条件由ISO 17543-1涵盖: -固定式或可转位机头，带与Z轴成直角的附件主轴，带或不带与Z轴平行的主轴； -45°分体式可转位头部，两个物体不同角度位置的机械转位（e。 g、 Hirth联轴器）； -45°分体式连续封头，配备两个数控轴的连续定位； -旋转头，具有两个相互垂直的数控旋转轴。 附件B中规定了附件端面封头的试验条件。 ISO 3070-2:2016涉及的机器具有床身上立柱的移动（X轴）、立柱上主轴头的垂直移动（Y轴）、柱塞的轴向移动（Z轴）、镗床主轴的轴向移动（W轴），以及在大多数情况下，一个或多个工作台在床身上平行于主轴（R轴）移动并绕垂直轴（B轴）旋转。 ISO 3070-2:2016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、粘滞）- 部件的滑动运动）或机器特性（例如速度、进给），因为此类检查通常在测试精度之前进行。

ISO 3070-2:2016 specifies, with reference to ISO 230？1, ISO 230？7 and ISO 230？2, geometric tests, spindle tests and tests for checking the accuracy and repeatability of positioning by numerical control of horizontal spindle boring and milling machines having a movable column along the X-axis and also specifies the applicable tolerances corresponding to general-purpose, normal accuracy machines. This type of machines are usually provided with sliding boring spindles and can be provided with universal spindle heads of the following types, whose test conditions are covered by ISO 17543？1: - fixed or indexable heads, with accessory spindle(s) square to the Z-axis, with or without one spindle parallel to the Z-axis; - 45° split indexable heads, with mechanical indexing of the different angular positions of the two bodies (e.g. Hirth couplings); - 45° split continuous heads, provided with continuous positioning of the two numerically controlled axes; - swivel heads, with two numerically controlled rotary axes perpendicular to each other. Test conditions for accessory facing heads are specified in Annex B. ISO 3070-2:2016 concerns machines having movement of the column on the bed (X-axis), vertical movement of the spindle head on the column (Y-axis), axial movement of the ram (Z-axis), axial movement of the boring spindle (W-axis), and, in most cases, one or more tables moving on a bed parallel to the spindle (R-axis) and rotating around a vertical axis (B-axis). ISO 3070-2:2016 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 checks are generally carried out before testing the accuracy.