Comparsion of machining stability of up and down milling

Te Ching Hsiao, Junz Jiunn-jyh Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The purpose of this research is to discuss the machining stability in of the up and down milling of three milling systems: 1) the feed-direction one-dimension, 2) the normal-to-feed-direction one-dimension and 3) the symmetric two-dimension milling systems. A simplified model with time-invariant parameters is adopted to simulate the milling process. In this model, the elementary cutting function, which represents the trajectory of cutting force for a certain local cutting edge, plays an important role in affecting machining stability of the different cutting configurations. This paper presents an in-depth discussion on the effects of cutting configurations and radial depth of cut on the elementary cutting function, and also on the stability lobes. It is found that the elementary cutting function of one-dimension milling system is a real number, as well as its positive and negative values will lead to totally different chatter features. Most technical literatures focus on the chatter features of positive elementary cutting function, while this research discuss that of both positive and negative ones. On the other hand, for the two-dimension milling system, its machining stability found to be dominated by the eigenvalues of the elementary cutting function matrix. The comparison of machining stability in up and down milling is then analyzed and three conclusions are drawn in this research. Firstly, the feed-direction one-dimension milling system has better machining stability in up milling. Secondly, the normal-to-feed-direction one-dimension milling system has better machining stability in down milling. Thirdly, up and down milling both show the same machining stability in the symmetric two-dimension milling system.

Original languageEnglish
Title of host publicationContemporary Solutions in Applied Materialsand Industry
PublisherTrans Tech Publications Ltd
Pages369-386
Number of pages18
ISBN (Print)9783037856635
DOIs
Publication statusPublished - 2013 Jan 1
Event2013 2nd International Conference on Sport Material, Modelling and Simulation, ICSMMS 2013 - Melbourne, VIC, Australia
Duration: 2013 Jan 202013 Jan 21

Publication series

NameAdvanced Materials Research
Volume680
ISSN (Print)1022-6680

Other

Other2013 2nd International Conference on Sport Material, Modelling and Simulation, ICSMMS 2013
CountryAustralia
CityMelbourne, VIC
Period13-01-2013-01-21

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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