Masters Theses

Abstract

"This thesis presents the results of experimental investigation of temperature and tool wear in high speed end-milling of titanium alloy. The investigation of cutting parameters on temperature in high speed end-milling of thin-walled titanium structure was conducted on Cincinnati Milacron Sabre 750 Vertical Machining Center using a 1/2 Fractional Factorial Design of Experiment with 3 factors at 2 levels each. Data logging of temperature data was carried out using VI logger software. Tool tip temperature at the comers and center of the pocket was estimated. All the factors investigated were found to have a significant effect on workpiece temperature. Radial depth of cut has the most significant effect on workpiece temperature, followed by axial depth of cut, while spindle speed has the least effect at 95% confidence interval. The investigation of workpiece temperature and tool wear in high speed end-milling of titanium alloy was conducted on Cincinnati Milacron Sabre 750 Vertical Machining Center using three different tool materials: TiAIN coated carbide, uncoated carbide and powder metal end-mills. Workpiece temperature and tool wear were measured at respective depths of cut. Wear on the end-mills were studied using a Mitutoyo Toolmakers Microscope. For TiAIN coated and uncoated carbide end-mills, the results show an initial rapid non-linear increase in workpiece temperature after which workpiece temperature gradually approaches steady state. At 0.1” pocket depth, powder metal end-mill generated sparks and high workpiece temperature which resulted in rapid wear of the tool"--Abstract, page iv.

Advisor(s)

Okafor, A. Chukwujekwu (Anthony Chukwujekwu)

Committee Member(s)

Chandrashekhara, K.
Dwilewicz, Roman

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering

Publisher

University of Missouri--Rolla

Publication Date

2007

Journal article titles appearing in thesis/dissertation

  • Investigating the Effects of Cutting Parameters on Temperature in High Speed End-Milling of Thin-Walled Titanium Structure
  • Investigating Workpiece Temperature and Tool Wear in High Speed End-Milling of Titanium Alloy

Pagination

x, 86 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2007 Benjamin Nwakile Oguejiofor, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 11201

Print OCLC #

1022846456

Electronic OCLC #

1015343862

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