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首页> 外文期刊>International Journal of Computer Integrated Manufacturing >Accuracy of a reverse-engineered mould using contact and non-contact measurement techniques
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Accuracy of a reverse-engineered mould using contact and non-contact measurement techniques

机译：使用接触和非接触测量技术的逆向工程模具的精度

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Investigations into the accuracy of computer-aided design (CAD) models for an injection mould have been carried out in this work. Taguchi design of experiments has been employed to find appropriate values for scanning parameters which result in shortest scanning time and lowest deviation between actual mould and its CAD model. CAD models obtained from point clouds captured using different scanning techniques, such as laser line scanning probe, active scanning probe and passive scanning probe attached to a bridge type CMM, have been analysed. For analysis, deviations between CAD model and actual part have been measured at a number of pre-defined points. Effect of surface roughness on the accuracy of reverse-engineered CAD model and scanning time while capturing surface coordinates using scanning touch probe has also been investigated. This investigation clearly exhibits that in case of polished surface higher accuracy for CAD model can be obtained in shorter scanning time.
机译：在这项工作中，已经对注塑模具的计算机辅助设计（CAD）模型的准确性进行了调查。 Taguchi设计了实验方法，以找到合适的扫描参数值，从而缩短扫描时间，并使实际模具与其CAD模型之间的偏差最小。已经分析了从使用不同扫描技术（例如连接到桥式CMM的激光线扫描探针，有源扫描探针和无源扫描探针）捕获的点云获得的CAD模型。为了进行分析，已经在许多预定义点处测量了CAD模型和实际零件之间的偏差。还研究了表面粗糙度对逆向工程CAD模型的精度和扫描时间（同时使用扫描测头捕获表面坐标）的影响。该研究清楚地表明，在抛光表面的情况下，可以在更短的扫描时间内获得更高的CAD模型精度。

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