Machining Error Analysis with the Consideration of Static Machine Stiffness

Abstract

In previous studies on machine tool errors, most efforts mainly focused on modelling of geometric and thermal errors of the machine tool. The machining-force-induced error, however, is gradually becoming unneglectable in modern manufacturing because the increasing kinds of difficult-to-cut materials are used especially in the fields such as aerospace, energy, and automotive, and significant machining forces are generated during machining processes of these materials. Most previous efforts on this topic were based on finite element method, which cannot provide the explicit understanding of the relationship
between machine tool error and machine stiffness. To fill this gap, this thesis proposes a physical model of force-induced machine tool errors by utilizing homogeneous error matrix and statics analysis. Theoretical results calculated by the proposed model are compare with the ones calculated by finite element method to prove the model feasibility and accuracy.

Date of Award	Jul 2023
Original language	English
Awarding Institution	University of Nottingham
Supervisor	Gongyu Liu (Supervisor), Haonan Li (Supervisor) & Chung Ket Thein (Supervisor)