Masters Theses

Ryan Matthews

Abstract

"This thesis presents the results of experimental investigation of the effects of cutting parameters (spindle speed, feed per tooth, axial depth of cut and radial depth of cut) on the three components of cutting forces (Fx, Fy, Fz), workpiece temperature and surface roughness in end-milling of Hastelloy C-2000 alloy using design of experiments (DOE) and response surface methodology (RSM). End-milling experiments were conducted using 0.5 inch diameter end-mill on Cincinnati Milacron Sabre 750 vertical machining center using water based flood coolant. An inscribed central composite design of experiment was used to study the four factors at five levels. A Kistler type 9257 A 3- component force dynamometer was used to measure cutting force components Fx, Fy, Fz. An ungrounded K-type thermocouple probe was inserted into a pre drilled hole in the workpiece to measure the temperature (T), and surface roughness (Ra) was measured using a portable Brown&Sharpe Pocket Surf which uses a piezoelectric probe for measurement. It is observed that a linear model was inadequate to model the end-milling process and a second order model was developed form [sic] the linear model and was found to be adequate in all cases. It is observed that the interaction effects of factors are significant in determining components of cutting force, workpiece temperature and surface roughness. It is also observed that feed per tooth is a common factor that has significant effect on all the three responses examined. The optimum cutting parameters to obtain minimum cutting force components, workpiece temperature and surface roughness were determined using ANOVA and are presented. The Pareto chart and the marginal means plot showing the effect of each parameter on cutting force components, workpiece temperature and surface roughness are also presented"--Abstract, page iv.

Advisor(s)

Okafor, A. Chukwujekwu (Anthony Chukwujekwu)

Committee Member(s)

Takai, Shun
Chandrashekhara, K.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering

Sponsor(s)

Missouri University of Science and Technology. Department of Mechanical and Aerospace Engineering
National Science Foundation (U.S.)

Publisher

Missouri University of Science and Technology

Publication Date

Spring 2011

Journal article titles appearing in thesis/dissertation

  • Effects of machining parameters on the components of cutting forces in end-milling of Hastelloy C-2000 using design of experiments and response surface methodology
  • Effects of machining parameters on workpiece temperature and surface roughness in end-milling of Hastelloy C-2000 using design of experiments and response surface methodology

Pagination

xiii, 121 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2011 Ryan Matthews, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Machining -- EvaluationMilling (Metal-work) -- EvaluationNickel-chromium alloys -- MachinabilitySurface roughness -- Measurement

Thesis Number

T 9840

Print OCLC #

792860487

Electronic OCLC #

908856817

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