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Optimization of Selective Assembly for Shafts and Holes Based on Relative Entropy and Dynamic Programming
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Optimization of Selective Assembly for Shafts and Holes Based on Relative Entropy and Dynamic Programming
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Journal Article
Optimization of Selective Assembly for Shafts and Holes Based on Relative Entropy and Dynamic Programming
2020
Overview
Selective assembly is the method of obtaining high precision assemblies from relatively low precision components. For precision instruments, the geometric error on mating surface is an important factor affecting assembly accuracy. Different from the traditional selective assembly method, this paper proposes an optimization method of selective assembly for shafts and holes based on relative entropy and dynamic programming. In this method, relative entropy is applied to evaluate the clearance uniformity between shafts and holes, and dynamic programming is used to optimize selective assembly of batches of shafts and holes. In this paper, the case studied has 8 shafts and 20 holes, which need to be assembled into 8 products. The results show that optimal combinations are selected, which provide new insights into selective assembly optimization and lay the foundation for selective assembly of multi-batch precision parts.
Publisher
MDPI,MDPI AG
