Document Type : Research Paper
Authors
1 Production and Metallurgy Engineering department, University of Technology - Iraq
2 Production and Metallurgy Engineering, University of Technology - Iraq
Abstract
The accuracy of data transition between CAD and CAM has been playing a great role in the product life cycle, and eventually, the product quality. As products complexity increased, the need to robust technique to data transition increased. On the other hand, Machining simulation facilitates deciding the process parameters. The aim of the present research is divided into two aims: first: building a free form surface and transforming its data accurately from CAD to CAM without any distortion. Second: study the milling process using different end cutters geometry and make a comparison between those in terms of machining time at a constant scallop height (s.h.). The study passed through three steps, first: A mathematical model and computer program had been built for non-uniform B-spline surface creation. The output points are stored in a format to be easily imported. Second: importing the data into manufacturing simulation program to emulate the milling process. Three types of milling tools with different end cutter had been used (flat, ball, and toroidal). Third, use a CIMCO edit package to estimate machining time for the three tools. A conclusion had been made that the surface data had been transformed accurately into the simulation process. Another conclusion was, with fixed (s.h.) the ball end mill takes more time than toroidal, which in turn takes more time than flat.
Keywords
Main Subjects
transfer as a part of product life cycle,” Factauniversitatisseries: Mechanical Engineering, 5, 1, pp.87-96, 2007.
[2] S. Marjudi, M.M. Amran, K.A. Abdullah, S.
Widyarto, N.A. Majid, and R. Sulaiman, “A Review and
Comparison of IGES and STEP,” In Proceedings of
World Academy of Science, Engineering And Technology
Vol. 62, pp. 1013-1017, 2010.
[3] M. Bey, S. Boudjouad, and N. Tafat-Bouzid, “Toolpath generation for free-form surfaces with B-spline
curves,” StrojniskiVestnik, 53, 11, pp.733, 2007.
[4] L. Skoczylas, K. Skoczylas, and D. Wydrzyński, “The
standard milling time of flat surfaces without outline
restrictions,” Advances in Science And Technology
Research Journal, 10, 31, 2016.
[5] J.M. Redonnet, A. GamboaVázquez, A. Traslosheros
Michel, and S. Segon, “Optimization of free-form surface
machining using parallel planes strategy and torus milling
cutter,” Proceedings of the Institution of Mechanical
Engineers, Part B: Journal of Engineering Manufacture,
232, 2, pp.240-250, 2018.
[6] A. Oşan, M. Bănică, and V. Năsui, “Processing of
convex complex surfaces with toroidal milling versus ball
nose end mill,” In MATEC Web of Conferences
EDP Sciences, Vol. 178, p. 01003, 2018.
[7] T. Dokken, V. Skytt, and O. Barrowclough,
“Trivariate Spline Representations for Computer
Aided Design and Additive Manufacturing,” Computers
&Mathematics with Applications1803.05756, 2018.
[8] M. Price, “Penalized b-splines and their application
with an in depth look at the bivariate tensor product
penalized b-spline,” Graduate Theses and
Dissertations. 16441. https://lib.dr.iastate.edu/etd/16441,
2018.
[9] X. Li, “Automatic tool path generation for
numerically controlled machining of sculptured
surfaces,” Doctoral Dissertations, University of New
Hampshire Scholars' Repository, 1993.
[10] S. Engin, and Y. Altintas, “Mechanics and dynamics
of general milling cutters: Part I: helical end
mills,”international journal of machine tools and
manufacture,41, 15, pp.2195-2212, 2001.
)
