外文翻译--数控机床精度的检测-数控设计(编辑修改稿)

外文翻译--数控机床精度的检测-数控设计(编辑修改稿)内容摘要：

achine tools, various industries are being the user acceptance and maintenance of CNC machine tools much attention to problems. Accuracy of machine tools include the geometric accuracy of machine tools, machine tool positioning accuracy and precision cutting machine tools. On the basis of these precision of test items, test methods and precautions to conduct a prehensive description. 1 A geometric accuracy of CNC machine tools The geometric accuracy of CNC machine tools to reflect the key mechanical ponents (eg, bed, slide board, column, spindle boxes, etc.) the geometry of the error and its geometry after assembly errors, including the work surface flatness, each coordinate direction on the degree of perpendicular movement of the working table X, Y coordinates of the 重庆理工大学毕业论文 文献翻译 6 direction of movement parallel, radial runout spindle bore, spindle axial traverse, spindle boxes along the z axis line of the direction of coordinates moving parallel to the main axis degrees, the spindle moving in the zaxis coordinates of the straightness and spindle rotation axis of the vertical line of the work table and so on. Common testing tools precision spirit level, precision square box, dial gauge or a micrometer table, rightangle instrument, flat feet, highprecision spindle mandrel and the dial gauge pole magic blocks and so on. Detection method: The geometric accuracy of CNC machine tools and general machine detection methods are similar to testing requirements to be higher than the general machine tools. detection of Note: (1) detection, the base of the machine should have been pletely cured. (2) detection when detection tools and to minimize the error detection methods. (3) shall be in accordance with relevant national standards, first connected to the power of the machine tool preheating, and let all along the machine axis reciprocating motion several times to make mediumspeed spindle in order to run for a few minutes before. (4) The geometric accuracy of CNC machine tools in general higher than normal. Ordinary machine tools used。