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 R-method: N10 G91 G02 X1.0 Y-1.0 R1.0 F3.0 IJ – method: N10 G91 G02 X1.0 Y-1.0 J-1.0 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...
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- Spring '10
- Milling cutter, R-method N10 G90, N10 G90 G03, Y-2.5 R-method N10, Y-3.8 R-method N10, N10 G90 G02