Formulas for Drilling

CUTTING SPEED (vc)

  • VC (m/min) = Cutting Speed
  • D1(min) = Drill Diameter
  • π (3.14) = Pi
  • n(min^-1) = Rotational Speed of the Main Spindle
*Note Unit transformation ( from "mm" to "m")

FEED OF THE MAIN SPINDLE (vf)

  • vf(mm/min) = Feed Speed of the Main Spindle (z axis )
  • f(mm/rev) = Feed per Revolution
  • n (min^-1) = Rotational Speed of the Main Spindle

 

DRILLING TIME (Tc)

  • Tc (min) = Drilling Time
  • n(min^-1) = Spindle Speed
  • ld (mm) = Hole Depth
  • f(mm/rev) = Feed per Revolution
  • I = Number of Holes

Formulas for Milling

CUTTING SPEED (vc)

  • VC (m/min) = Cutting Speed
  • D1(min) = cutter Diameter
  • π (3.14) = Pi
  • n(min^-1) = Main Axis Spindle Spindle
*Note Divided by 1000 to Change to "m" from "mm" )

FEED PER TOOTH (fz)

  • fz (mm/tooth) = Feed per Tooth
  • vf (mm/min) = Table Feed per Min
  • n(min ^-1) = Main Axis Spindle Speed (Feed per Revolution f = zxfz)

TABLE FEED (vf)

  • vf(mm/min) = Table Feed per Min
  • z = insert Number
  • fz (min^-1) = MAin Axis Spindle Speed

CUTTING TIME (Tc)

  • Tc (min) = Cutting Time
  • vf (mm/min) = Table Feed Per Min
  • L (mm) = Total Table Feed Length (Workpiece)
  • Length = Cutter Diameter D1