机床.测试卧式镗床和铣床精度的试验条件.第3部分:带有可移动床身和固定式工作台的机床

[中文适用范围]： ISO 3070的本部分参照ISO 230-1、ISO 230-2和ISO 230-7规定了几何试验、加工试验、主轴试验以及检查通用数控定位精度和重复性的试验，普通精度、卧式主轴镗铣床，具有可动立柱和可动工作台。 3070 的这一部分还规定了与这些测试相对应的适用公差。 这种类型的机床可以配备不同类型的主轴头，例如滑动镗轴和铣削主轴、滑动镗轴和端面头、滑枕或铣滑枕等。 ISO 3070 的这一部分涉及具有床身上立柱或立柱鞍座运动（X 轴）、主轴头垂直运动（Y 轴）、镗轴或滑枕运动（Z 轴）以及可能的端面头（U 轴）中径向端面滑块的进给运动。 有些机器还在立柱和床身之间设有带滑道的中间鞍座，以实现立柱平行于主轴轴线（W 轴）的额外运动。 注：在 ISO 3070-1 中，主轴滑枕运动被指定为 W 轴。 ISO 3070 的这一部分仅涉及机器精度的验证。 它不适用于机器的操作测试（例如振动、异常噪声、部件的粘滑运动），也不适用于机器特性（例如速度、进给），因为此类检查通常在测试精度之前进行。 [外文原描述]： ISO 3070-3:2007 specifies, with reference to ISO 230-1 and ISO 230-2, geometric tests, machining tests and tests for checking the accuracy and repeatability of positioning by numerical control of general purpose, normal accuracy, horizontal spindle boring and milling machines having a movable column and movable table. ISO 3070‑3:2007 also specifies the applicable tolerances corresponding to these tests. ISO 3070-3:2007 concerns machines having movement of the column or column saddle on the bed (X axis), vertical movement of the spindle head (Y axis), movement of the boring spindle or ram (Z axis) and, possibly, a feed movement of radial facing slide in the facing head (U-axis). Some machines also have an intermediate saddle with slideway between column and bed to achieve additional movement of the column parallel to the spindle axis (W-axis). ISO 3070-3:2007 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.