The Analysis of Fracture Formation on Exit Edge in Pricision Machining

Article Preview

Abstract:

Burrs and fractures are two types of shapes formed on exit edges in pricision machining. They affect the quality of workpiece and the efficiency of prodcution seriously. A finite element model of fracture formation process to simulate the machining process of 2024-T3 Aluminum alloy is proposed. According to simulation results, five stages and variation of shear shain in fracture formation process are analyzed. It is found that shear strain plays an important role in fracture forming process. The method of determination of critical shear strain for fracture forming is proposed from simulation results.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

174-178

Citation:

Online since:

October 2010

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2010 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] M. Hashimura, K. Ueda, K. Manabe and D.A. Dornfeld: Bulletin of the Japan Society of Precision Engineering. Vol. 65 (1999), pp.872-877.

Google Scholar

[2] S.L. Ko, D.A. Dornfeld: J. Mater. Pro. Technol. Vol. 58 (1996), pp.189-200.

Google Scholar

[3] G.L. Chern, D.A. Dornfeld: J. Eng. Mater. Technol. Vol. 118 (1996), pp.201-206.

Google Scholar

[4] S. Min, D. Dornfeld, Kim J, Shyu B: Int. J. Mech. Sci. Vol. 5 (2001), pp.307-322.

Google Scholar

[5] Y. Guo, D.A. Dornfeld: Transactions of NAMRI/ SME. Vol. 207 (1998), pp.207-211.

Google Scholar

[6] Y. Guo, D.A. Dornfeld: J. Manuf. Sci. E-T. ASME. Vol. 122 (2000), pp.612-620 Fig. 7 Measurement path Fig. 8 The variation of shear strain along the path measurement path Cutting thickness (0. 1mm).

Google Scholar