A New Methodological Approach for the Machining Process Planning

摘要

This document presents a procedure for carrying out the step of selecting the locating surfaces and validating the setup, which is incorporated within a methodology for machining process planning that, unlike other classical approaches, deals with the problem from back to front. The procedure, which uses the typical tolerance graphs and tolerance transfer techniques based on the worst case, is applied first of all to the last setup from the alternative process plan that is being drawn up, and lastly it is applied to the first. This method allows us to consider the effects of the transmission of the variability among setups (machining stages) proposed by the multi-station variability models.