Constructive Assessment of an Attainable Accuracy at Large-Size Thin-Walled Housing Rings Machining by Modelling of Cutting Force Effect

Abstract

Large-size thin-walled housing rings machining accuracy problem was described. Produceability rating based on part stiffness was offered. Geometrical mechanical compliance simulation model of large-size thin-walled aviation engine housing rings was developed. Comparing of calculated geometrical mechanical compliance for different real parts and their experimental machining deviation was performed. The results of this comparing confirmed that geometrical mechanical compliance can be use as machining accuracy criteria for large-size thin-walled aviation engine housing rings. Geometrical mechanical compliance criteria value was found during real parts machining. This value shows the boundary parts design conditions when is necessary to use nonconventional technological decisions (tool, cutting mode, equipment, etc) to provide required machining accuracy.