Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/133133
Title: A STUDY ON STRAIGHTNESS CONTROL IN DEEP HOLE DRILLING OF INCONEL-718
Authors: AKSHAY CHAUDHARI
Keywords: Deep hole drilling, Inconel-718, Hole straightness, Drilling force modelling, Edge radius effect, Drilling chip morphology
Issue Date: 17-Aug-2016
Source: AKSHAY CHAUDHARI (2016-08-17). A STUDY ON STRAIGHTNESS CONTROL IN DEEP HOLE DRILLING OF INCONEL-718. ScholarBank@NUS Repository.
Abstract: Deep hole drilling process using single-lip drill is incapacitated by the rapid tool wear, tool breakage, and straightness deviation when employed to machine high aspect ratio holes in Inconel-718 required for oil-field equipment. In this thesis, a comprehensive predictive approach for straightness deviation control in deep hole drilling is proposed. Three major components of the predictive framework are- the predictive modelling of the single-lip drilling forces considering the effect of cutting edge radius, quantification of the effects of chip morphology on the drilling thrust force and the predictive straightness deviation modelling considering the effect of machine set-up parameters. The predicted results were found to be in good agreement with the experimental hole straightness deviations. Based on the proposed model, a novel movable bearing housing was developed and tested successfully for the straightness control to achieve deviation within the limit of 1 mm per 1 m length.
URI: http://scholarbank.nus.edu.sg/handle/10635/133133
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
ChaudhariA.pdf6.97 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

72
checked on Jan 21, 2018

Download(s)

5
checked on Jan 21, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.