High-Speed Machining // Radial Thinning Dynamics

Radial Chip Thinning
Calculator

When radial stepover is less than 50% cutter diameter (ae < 0.5D), physical chips thin out. Boost table feed rate to maintain programmed chip load, eliminate tool rubbing, and cut cycle times.

Cut Geometry & Stepover

Cutter Diameter (D)6.0 mm

1.0 mm6.0 mm (1/4")25.0 mm

Radial Width of Cut / Stepover (ae)0.90 mm (15% of D)

5% (Light Finishing)15% (HSM Adaptive)50%+ (Slotting / No Thinning)

Standard CAM Stepover Presets

Target Chip Load (hm)mm/tooth

Spindle RPMRPM

Flutes (z)

CAM Feed Compensation

Compensated Feed

Compensated Feed (Vf)

3,403mm/min

= 134.0 IPM (was 2,430 mm/min)

Feed Boost Multiplier (Kct)

1.40xBoost

Programmed fz = 0.0630 mm/tooth

Cutter Engagement Angle (θ):46°

Productivity Feed Increase:+40%

Cycle Time Saved:29% faster

Chip thinning active! Entering compensated feed (3403 mm/min) in CAM prevents tool rubbing and carries heat away inside the chip.