Modelling of Variation Propagation for Multi-Operational Machining Processes Based on Perturbation Vectors

Abstract:

A new state space model of multi-operational machining processes is presented for dimensional variation propagation, transformation and accumulation based on perturbation vectors (PV). Taking perturbation vectors (PV) for state vectors of part geometric variaton and the fixture variations for input vectors, the perturbation homogeneous transformation (PHT) is applied to analyze and derivate datum-induced deviation, re-location deviation, fixture error and machining error, and a state space model of variation propagation in multi-operational complicated machining processes is developed. Furthermore, a three-operation machining process of cylinder is given to illustrate the method presented. With the results of calculation and simulation, it is verified that the proposed model is effective and useful.

• Periodical: Applied Mechanics and Materials (Volume 36)
• Pages: 120-128
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.36.120
• Online since: October 2010
• Authors: Z.J. Wen, Ping Yu Zhu, X.P. Zhang, H.C. Liu
• Keywords: Multi-Operational Machining Process, Perturbation Vectors, State Space Model

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