MITSUBISHI MATERIALS CORPORATION
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THREADING FORM / FORMULAE / NC PROGRAMME FOR MODIFIED FLANK INFEED
THREADING FORM
Radial Infeed Flank Infeed Modified Flank Infeed Incremental Infeed
  • General threading.
  • Suitable for finepitches.
  • Flat flank wear.
  • Low workpiece rigidity or occurrence of chattering.
  • Good chip control.
  • Low workpiece rigidity or occurrence of chattering.
  • Good chip control.
  • Flat flank wear, compared to flank infeed.
  • Low workpiece rigidity or occurrence of chattering.
  • Suitable for large pitches.

FORMULAE
Formulae to calculate infeed for each pass in a reduced series.
FORMULAE (Example)
External threading (ISO Metric)
Pitch : 1.0mm
ap : 0.6mm
nap : 5 passes

FORMULAE

NC PROGRAMME FOR MODIFIED FLANK INFEED
Example) M12×1.0 5 passes modified 5°