GENERAL TECHNICAL INFORMATION DATA FOR REGRINDING SOLID CARBIDE MILLS d1 a RA Pra/Rra SRa tA aA PA SA W A A1 Lw Aw P B End mill 2 flutes <.300" 30 12 13 - 2.5 5 10 17 .007xd1 11.5 - - .004xd1 - - <.300" 30 10 12 - 2 5 10 17 .007xd1 11.0 - - .004xd1 - - 3 flutes <.300" 38-45 12 13 - 2 6 8 16 .007xd1 10.5 - - .004xd1 - - <.300" 38-45 10 12 - 1.5 6 7 16 .006xd1 9.5 - - .004xd1 - - 4 flutes <.300" 30-45 11 13.5 - 1.5 5 8 16 .0065xd1 10.8 - - .004xd1 - - <.300" 30-45 10 12 - 1.5 5 7 16 .006xd1 9.5 - - .004xd1 - - 6 flutes <.300" 45 10 11 - 1.5 5 7 16 .0055xd1 9.0 - - .003xd1 - - <.300" 45 10 10 - 1.5 5 7 16 .005xd1 8.5 - - .003xd1 - - Ball nose mill 2 flutes <.300" 30 12 11 22 - 7 11 22 .007xd1 11.0 22 .0023xd1 .004xd1 (.017xd1)/2 .0060xd1 <.300" 30 11 11 22 - 6 11 22 .0065xd1 11.0 22 .002xd1 .004xd1 (.017xd1)/2 .0058xd1 3 flutes <.300" 30 12 11 22 - 7 11 22 .007xd1 11.0 22 .0023xd1 .004xd1 (.017xd1)/2 .0060xd1 <.300" 30 11 11 22 - 6 11 22 .0065xd1 11.0 22 .002xd1 .004xd1 (.017xd1)/2 .0058xd1 4 flutes <.300" 30 12 11 23 - 7 11 23 .007xd1 11.0 23 .0023xd1 .004xd1 (.017xd1)/2 .0060xd1 <.300" 30 11 11 22 - 6 11 22 .0065xd1 11.0 22 .002xd1 .004xd1 (.017xd1)/2 .0058xd1 End mill with corner radius <.300" 38-45 12 13.5 25 3 8 8 17 .007xd1 10.8 21 .0023xd1 .004xd1 (.017xd1)/2 .0060xd1 3 flutes <.300" 38-45 10 12 25 3 8 8 17 .0065xd1 10.0 21 .002xd1 .004xd1 (.017xd1)/2 .0058xd1 4 flutes <.300" 30-45 11 13.5 25 3 8 8 17 .007xd1 10.8 21 .0023xd1 .004xd1 (.017xd1)/2 .0060xd1 <.300" 30-45 10 12 25 3 8 8 17 .0065xd1 10.0 21 .002xd1 .004xd1 (.017xd1)/2 .0058xd1 6 flutes <.300" 45 10 11 16 2 8 7 16 .0055xd1 9.0 16 .0023xd1 .004xd1 (.017xd1)/2 .0050xd1 <.300" 45 10 10 18 1.5 7 7 16 .005xd1 8.5 17 .002xd1 .004xd1 (.017xd1)/2 .0046xd1 Rough mill <.300" 45 12 10 - 2.5 7 7 17 .008xd1 9.0 - - .008xd1 - - <.300" 45 11 9 - 2.5 5 7 17 .008xd1 8.0 - - .006xd1 - - Aluminum mill <.300" 45-55 18 14 27 4 11 12 25 .0065xd1 13.0 26 .0023xd1 .004xd1 (.017xd1)/2 .0060xd1 2 flutes <.300" 45-55 17 13 26 4 11 11 24 .0075xd1 12.0 25 .002xd1 .004xd1 (.017xd1)/2 .0067xd1 Parameters / Paramètres: d1 = Cutter diameter PA = Axial primary relief angle a = Helix angle SA = Axial secondary clearance angle Ra = Radial rake angle aA = Axial rake angle PRa = Radial primary relief anglel Aw = Axial land width SRa = Radial secondary clearance angle A = Radius / chamfer primary relief angle W = Radial flute width A1 = Radius / chamfer 2nd clearance angle Lw = Radial land width P = Radius / Chamfer land tA = Dish angle B = Radius / chamfer flute land Regrinding and surface coating of end mills 1. Regrinding may not influence the original composition of surface substrate. 2. End mills have to be cleansed after regrinding, to remove oil or other dirt. Areas that have to be coated should be cleaned once more shortly before. 3. Thickness of coating to be 2 - 4 µm for TiCN- and TiAIN-alloys. 459