机床试验法规. 第3部分: 热效应测定

[中文适用范围]： 本文件定义了四种测试： ——环境温度变化误差（ETVE）测试； ——旋转主轴引起的热变形试验； ——由移动线性轴引起的热变形测试； ——部件旋转运动引起的热变形测试。 由移动线性轴引起的热变形测试（参见第 7 条）仅适用于数控 (NC) 机器，旨在量化热膨胀和收缩以及结构的角变形的影响。 出于实际原因，第 7 章中描述的测试方法适用于线性轴长度不超过 2000 mm 的机器。 如果用于轴长度超过 2000 mm 的机器，则在每个轴的正常范围内选择 2000 mm 的代表性长度进行测试。 这些测试对应于 ISO/TR 16015:2003, A.4.2 中描述的漂移测试程序，适用于机床，特别考虑移动线性部件的热变形和移动旋转部件的热变形。 在配备热效应补偿的机床上，这些测试证明了由于热膨胀系数的不确定性而导致的标称热膨胀的任何不确定性以及由于温度测量而导致的长度的任何不确定性。 [外文原描述]： This document defines four tests: — an environmental temperature variation error (ETVE) test; — a test for thermal distortion caused by rotating spindles; — a test for thermal distortion caused by moving linear axes; — a test for thermal distortion caused by rotary motion of components. The tests for thermal distortion caused by moving linear axes (see Clause 7) are applicable to numerically controlled (NC) machines only and are designed to quantify the effects of thermal expansion and contraction as well as the angular deformation of structures. For practical reasons, the test methods described in Clause 7 apply to machines with linear axes up to 2 000 mm in length. If they are used for machines with axes longer than 2 000 mm, a representative length of 2 000 mm in the normal range of each axis is chosen for the tests. The tests correspond to the drift test procedure as described in ISO/TR 16015:2003, A.4.2, applied for machine tools with special consideration of thermal distortion of moving linear components and thermal distortion of moving rotary components. On machine tools equipped with compensation for thermal effects these tests demonstrate any uncertainty in nominal thermal expansion due to uncertainty of coefficient of thermal expansion and any uncertainty of length due to temperature measurement.