Modelling and Simulating the Digital Measuring Twin Based on CMM

Miladin A. Marjanovic, S. Stojadinovic, S. Zivanovic
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Abstract

In order to perform the inspection planning process on the coordinate measuring machine (CMM), it is necessary to model the measuring system with workpiece, CMM and fixture. The metrological analysis of the workpiece is then conducted, followed by the creation of a measurement program for simulation on a virtual measuring machine in a CAD environment. This paper presents the modelling and simulation of a virtual measuring system based on a real CMM using PTC Creo Parametric 5.0 software. The simulation involved programming the measuring path and generating a DMIS (*.ncl) file, which represents the standard modelled types of tolerance. The analysis of the metrology of the measuring part for the given forms of tolerance (location, perpendicularity, flatness, etc.) was performed. The components of the CMM and the assembly with defined kinematic connections are also modelled. Following the simulation and generation of the output DMIS file in PTC Creo using the virtual CMM, the real CMM was programmed and used for actual measurements. Subsequently, a measurement report was generated. The main result of this paper is the modelling of an offline Digital Measuring Twin (DMT) based on the DMIS file.
基于三坐标测量机的数字测量双体建模与仿真
为了在三坐标测量机上进行检测规划过程,需要对工件、三坐标测量机和夹具组成的测量系统进行建模。然后对工件进行计量分析,然后在CAD环境中的虚拟测量机上创建用于仿真的测量程序。本文利用PTC Creo Parametric 5.0软件对基于实际三坐标测量机的虚拟测量系统进行了建模和仿真。仿真包括编制测量路径和生成DMIS (*.ncl)文件,该文件表示标准的公差建模类型。对给定公差形式(定位、垂直度、平整度等)的测量件进行了计量分析。定义了运动连接的三坐标测量机组件和装配体也进行了建模。在PTC Creo中使用虚拟三坐标机对输出DMIS文件进行仿真和生成后,对真实三坐标机进行编程并用于实际测量。随后,生成了一个度量报告。本文的主要成果是基于DMIS文件的离线数字测量孪生体(DMT)的建模。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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