金属切削机床 桥式铣床的试验条件 固定桥（门式）机床的精度试验

[中文适用范围]： 1 适用范围 本文件参照ISO 230-1和ISO 230-2，规定了通用型、精度等级为普通级别的桥式铣床（固定桥/门式结构）上数控轴的定位精度与重复定位精度的几何测试方法，并明确了上述测试所适用的公差要求。本文件适用于具有移动工作台的机床，以及具有固定双立柱结构的机床；不适用于单立柱（开式侧）机床，也不适用于工作台固定而立柱移动的机床。本文件仅涉及机床精度的验证，不适用于机床运行性能的测试（如振动、异常噪声、部件粘滑运动等），亦不涉及一般在进行精度测试前需检验的机床特性（如进给速度、切削速度等）。本文件提供了机床主要部件的术语定义，并参照ISO 841标准规定了各坐标轴的命名方式。 [外文原描述]： This document specifies, with reference to ISO 230 - 1 and ISO 230 - 2 , geometric tests and tests for checking the accuracy and repeatability of positioning of numerically controlled axes for general purpose, normal accuracy, bridge-type milling machines with a fixed bridge (portal type). This document also specifies the applicable tolerances corresponding to the above-mentioned tests. This document is applicable to machines with moving tables and fixed double columns. It does not include single-column (open sided) machines and those with fixed tables and moving columns. This document deals only with the verification of the accuracy of the machine. It does not apply to the testing of the machine operation (vibration, abnormal noise, stick-slip motion of components, etc.) nor to machine characteristics (such as speeds, feeds, etc.), which are generally checked before testing the accuracy. This document provides the terminology used for the principal components of the machine and the designation of the axes with reference to ISO 841 .