10-15-2016, 01:37 PM
Cutting speed, AKA Surface Feet Per Minute, is calculated based on the size of the material/milling cutter and the type of cutter (carbide, etc). Coolant also plays a factor.
SFPM= (Pi X Dia X Rpm) /12 It also depends on the depth/type of cut and the rigidity of the machine/set up.
Download the Machinery Repairman 3 & 2 http://eric.ed.gov/?id=ED203130 and conduct a search in the document for "cutting speed". Page 218 will explain the use of cutting speeds on a lathe. Other pages will help one calculate the appropriate cutting speed for mills, etc. One of these days (you know how that goes) I'll set up a spread sheet to automate the process.
SFPM= (Pi X Dia X Rpm) /12 It also depends on the depth/type of cut and the rigidity of the machine/set up.
Download the Machinery Repairman 3 & 2 http://eric.ed.gov/?id=ED203130 and conduct a search in the document for "cutting speed". Page 218 will explain the use of cutting speeds on a lathe. Other pages will help one calculate the appropriate cutting speed for mills, etc. One of these days (you know how that goes) I'll set up a spread sheet to automate the process.