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Unformatted text preview: EML 6267 Assignment #5 Spring 2009 Please remember to put your name on your assignment. Due: Friday, 3/6/09 1. (20 pts.) Complete problem 1 from chapter 4 of the text. a) Up milling, 30% radial immersion The radial depth of cut is 30% of the cutter diameter or 60% of its radius, r a 6 . = . Because it is an up milling operation, = s and the exit angle is: ( ) 4 . 66 4 . cos 4 . cos 1 1 = = = r r e deg. See Fig. s.4.1.a for the up milling exit angle geometry. b) Down milling, 40% radial immersion The radial depth of cut is 40% of the cutter diameter or 80% of its radius, r a 8 . = .The starting angle is: ( ) 5 . 101 2 . cos 180 2 . cos 180 1 1 = = = r r s deg and the exit angle is 180 = e deg. See Fig. s.4.1.b. 2. (10 pts.) Complete problem 2 from chapter 4 of the text. 500 60 3 10000 60 = = = t tooth N f H z Figure s.4.1.a: Exit angle geometry for up milling. e r r- a e a Figure s.4.1.b: Start angle geometry for down milling....
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This note was uploaded on 04/23/2009 for the course EML 6267 taught by Professor Schmitz during the Spring '08 term at University of Florida.
- Spring '08