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08Lecture-G-Code-drill-Notes-POST

# 08Lecture-G-Code-drill-Notes-POST - Feed per rev(diameter =...

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ENGR3190U: Manufacturing and Production Processes Lecture 08 G-codes – Drilling - Notes Example – center drill A #3 center drill (HSS) is used to pre-drill some holes in aluminum part. Calculate the feed F and spindle speed S for this center drill. How deep should you drill? Solution S = RPM = 4*CS/Diamter = 4*200/.250 = 3200 F = RPM x FEED PER REV recalculate RPM = 4*CS/Diameter = 4*200/.2 = 4000
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Unformatted text preview: Feed per rev (diameter = CHMF = 0.2) = (.003)/.25 = x/.2 → x = 0.0024 F = (4000)(.0024) = 9.6 Z-depth: N10 G01 Z-.219 Example 1 For drilling the following hole, what should the R-value be set at? Set R.1 Example 2 For drilling the following hole, what should the R-value be set at? Set R-.4 1...
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