GUHRING - Концевые фрезы - 2013 EN

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Formulas         Milling Formulas - INCH Values

         Symbol  Description                                                       Formula
          SFM
         RPM     Surface Feet / Minute                                             SFM =  _R__P_M____D__
          IPT                                                                                 3.82
          IPM
                 Revolutions / Minute                                              RPM =  S__F_M____3_._8_2
                                                                                                D

                 Feed / Tooth                                                      IPT =  __I_P_M___
                                                                                          z x RPM

                 Inches / Minute                                                   IPM = IPT  RPM  z

D(eff)           Effective Diameter                                                D(eff) = 2  R2- (R - D1)2

                                          Deff

Symbol key: D = tool diameter (in.) z = no. of flutes R = radius D1 = DOC (ap)

                 Milling Formulas - METRIC Values

Symbol           Description                                                       Formula
   Vc
    n            Surface Meters / Minute                                           Vc =   _____D___n__
   fz                                                                                         1000
   Vf
                 Revolutions / Minute                                              n=     _V_c____1_0_0_0_
                      Feed / Tooth                                                           D

                                                                                   fz =   __v_f__
                                                                                          nz

                 Millimeters / Minute                                              vf = (n)  (z)  (fz)

D(eff)           Effective Diameter                         D(eff) = 2  D  ap - ap2

                                          Deff

Symbol key:  = 3.1416 D = tool diameter (mm) z = no. of flutes ap = depth of cut

                                       guhring@guhring-tools.ru                                                145
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