MILLING

MILLING

1. MACHINING OPERATIONS

   • Peripheral Milling
     • The axis of the tool is parallel to the surface being machined, and the operation is performed by cutting edges on the outside periphery of the cutter
       • up milling
       • down milling
   • Face Milling
     • The axis of the cutter is perpendicular to the surface being milled, andmachining is performed by cutting edges on both the end and outside periphery of.the cutter
       • surface contouring
       • pocket milling
       • profile milling
       • end milling
       • partial face milling
       • conventional facemilling

2. Conventional process in which a workpart is fed past a rotating cylindrical tool with multiple cutting edges

3. FORMULAS

   • Where...
     • N = spindle rev/min
       • v = cutting speed, mm/min (in/min)
         • nt = number of teeth on the cutter
           • f = chip load in mm/tooth (in/tooth)
             • fr = feed rate, mm/min (in/min)
               • f = feed, mm/rev (in/rev)
                 • d = depth of cut, mm (in)
                   • D ¼ diameter of the milling cutter, mm (in)
                     • RMR = material removal rate, mm3 /min (in3 /min)

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