A Machining Feature Information Model for Dynamic Manufacturing Planning

Abstract

This paper presents an information model that facilitates responsive changes to the dynamics of machining features in 2.5/3D machining. The model consists of basic information that remains unchanged throughout the manufacturing process and also adaptive information that may be redefined in response to changes in manufacturing resources. A suite of solutions have been developed to enable adaptive feature interpretation to the real time process plans without frequently re-recognising and re-planning that is common in current industrial practice. Examples will be provided to demonstrate the feasibility and potential benefits of the developed methodology.

A control method with considering error coupling in milling multi-feature thin-walled parts

“…Therefore, the comprehensive coaxiality error of H4 and H5 is Fig. 15 Experimental clamping in milling process of thin-walled parts Thus, it can be seen, the accuracy requirement of the coaxiality cannot meet the tolerance requirements. According to the posture error, the NC code of H5 is modified based on the WCS to realize the posture error compensation of the milling system under the target pose.…”

“…About the influence factors of error coupling of thin-walled parts, the researchers at home and abroad mainly focuses on the error coupling of datum transformation [8,9], thermal coupling [10,11], stress coupling [12][13][14], etc. Liu et al [15] studied a variety of error fields generated in the multi position clamping of thin-walled parts, and built a 3D error coupling model using the state space theory. Huang et al [16,17] followed the concept of datum flow chain (DFC), regarded each station of multi-feature machining as a series of discrete events.…”