"This thesis presents the results of the investigations of mechanistic modeling and simulation of cutting forces in high speed end milling of titanium alloy, Ti-6Al-4V, and the determination of specific cutting and edge force coefficients for carbide bull-nose helical end-mill. A generalized mathematical model representing the outer geometry of an end-mill and the cutter edge geometry is presented. Mechanistic cutting force models have been developed for a general helical end-mill and modeled specifically for a bullnose helical end-mill. A MATLAB code for the mechanistic cutting force models have been developed for the simulation of cutting force components in end milling and for the determination of specific cutting and edge force coefficients for any workpiece-tool material pair. Specific cutting and edge force coefficients are obtained for carbide bullnose helical end-mill - titanium alloy workpiece material pair at 10% radial immersion up-milling experiments. The effects of machining parameters: feed per tooth, helix angle, axial depth of cut, corner radius, number of cutter flutes, and spindle speed on cutting forces were investigated. End milling experiments were conducted on titanium alloy, Ti-6Al-4V, using a 0.5 inch (12.7 mm) diameter carbide bull-nose helical end-mill to verify the models. Predicted cutting force components (Fx, Fy, and Fz) obtained by the mechanistic cutting force models were compared with measured experimental values, and also with predicted and measured values from published literature. The results were in good agreement in both cases. This method for the determination of specific force coefficients and predicting cutting forces for titanium alloys can easily be extended to other metal alloys such as Hastelloy, Inconel, and niobium alloys"--Abstract, page iv.
Okafor, A. Chukwujekwu (Anthony Chukwujekwu)
Mechanical and Aerospace Engineering
M.S. in Mechanical Engineering
National Science Foundation (U.S.)
Missouri University of Science and Technology
Journal article titles appearing in thesis/dissertation
- Development of virtual CNC machine tools and web-based machining process simulation - Part 1: Mechanistic cutting force models and determination of specific force coefficients in helical end milling
- Development of virtual CNC machine tools and web-based machining process simulation - Part 2: Determination of specific force coefficients and simulation of cutting force components in high speed bull-nose end milling of titanium alloys
xi, 152 pages
© 2011 Vinay Rao Talekar, All rights reserved.
Thesis - Restricted Access
Library of Congress Subject Headings
Titanium alloys -- Machinability
Metal-cutting tools -- Design
Machining -- Evaluation
Print OCLC #
Electronic OCLC #
Link to Catalog RecordElectronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library. http://laurel.lso.missouri.edu/record=b8713585~S5
Talekar, Vinay Rao, "Development of virtual CNC machine tools and web-based machining process simulation: Mechanistic cutting force models and determination of specific force coefficients in helical end milling" (2011). Masters Theses. 4140.