Unformatted text preview: F3.0 Example 5 (on past year’s quiz) Start point = X2.0 Y2., Centre point = X2. Y1., End point = X3.0 Y1.0 Rmethod: N10 G91 G02 X1.0 Y1.0 R1.0 F3.0 IJ – method: N10 G91 G02 X1.0 Y1.0 J1.0 F3.0 Example Consider a 3/8” – Two Flute HSS end mill used to cut (roughing) an aluminum part. Calculate the feeds and speeds. Use simplified formula for RPM. CS = 240 RPM = 4*240/.375 = 2560 therefore set S2560 in program Feed per tooth = .013 0.005/1” = x/.375 > x=(0.005)(.375)/1 = .001875 F = (2560)(2)(.001875) = 9.6 set F9.6 in program 1...
View
Full Document
 Spring '10
 yang
 Milling cutter, Rmethod N10 G90, N10 G90 G03, Y2.5 Rmethod N10, Y3.8 Rmethod N10, N10 G90 G02

Click to edit the document details