基于曲面约束匹配算法的装配仿真定位方法

Assembly Method Based on Constrained Surface Registration

随着工业科技的发展,现代制造业对零部件的装配精度提出了更高的要求,要求从系统制造的早期阶段预测最终产品的精度与性能,这有利于提高装配合格率、一致性及精度稳定性。在精密零件真实模型的装配仿真过程中,确定零件模型的装配定位是进行装配精度预测与控制首要解决的问题,其本质是两个带有几何误差的配合表面的精确匹配。提出一种基于曲面约束匹配算法的装配仿真定位方法,并通过试验验证,零件装配定位的预测值与实测值的相对误差在10%以内。该方法是准确有效的,具有很好的计算精度,可以快速准确地在真实接触状态下分析和验证装配出的产品是否符合精度要求,为产品的装配分析和公差设计提供良好的校验、反馈功能以及可视化手段。

With the development of industrial technology, modern manufacturing industry put forward higher requirements for the assembly accuracy of components, from the early stages of system manufacturing to predict the accuracy and performance of the final product, which is conducive to improving the assembly pass rate, consistency and accuracy. In the process of assembly simulation of the precision parts model, it is the primary problem to locate the position of assembly model for the prediction and control of assembly accuracy, which the essence is the exact match of two mating surfaces with geometric errors. An assembly method based on constrained surface registration is proposed. Experiments show that the method with good calculation accuracy is accurate and effective. The method can analyze and verify quickly whether the assembled product meets the accuracy requirements. On this basis, the good verification, feedback, and visualization for assembly analysis and tolerance design can be provided.