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测量形状误差是精密制造业质量控制的关键部分。坐标测量机(CMM)是自动化精确测量维度尺寸和几何形状的机器。本文选用两种类型的坐标测量机触发探针进行标准工件测量,旨在研究不同的每转波数(UPR)时不可预见的动态固有误差的影响。整个实验过程使用探针类型和探针速度参数,采用快速傅立叶变换分析实验结果,得到受CMM机械结构和探针扫描速度影响而可预见的几何误差。实验结果表明,UPR的数量在进行圆形测量时对CMM准确度水平起非常重要的作用。本文对探针系统和坐标测量机结构响应的具体误差公式也进行了假设与分析,以经验数据来预测PRISMO-Bridge-CMM在NIS中的准确度。
Measuring shape error is a key part of precision manufacturing quality control. Coordinate Measuring Machine (CMM) is a machine that automates the precise measurement of dimensional dimensions and geometry. This article selects two types of CMM trigger probes for standard workpiece measurements to investigate the effects of unforeseen dynamic inherent errors at different UPRs. Throughout the experiment, using the probe type and probe speed parameters, the experimental results were analyzed by using Fast Fourier Transform to get the foreseeable geometric errors under the influence of CMM mechanical structure and probe scanning speed. The experimental results show that the number of UPR plays a very important role in the accuracy of CMM in the circle measurement. In this paper, we also make some assumptions and analyzes about the specific error formulas of the response of the probe system and CMM. The empirical data are used to predict the accuracy of PRISMO-Bridge-CMM in NIS.