JIS ACHSP

Spiral Fluted Tap for Aluminum Casting

Specification

CoatingCoating <<2D2D

Recommended Tapping Speeds depending on Materials

Aluminum alloy castings

30アルミ合金鋳物50

(m/min)

Features

  • Direct tapping of cored holes without drilling first, results in reducing the manufacturing time.
  • Made from an ultrafine grain carbide alloy combining the hardness and toughness.
  • The shank diameter is the same as the major diameter of the tap which improves rigidity and makes the ACHSP more resistant to deflection and the cutting side pressure caused from misalignment. (Maximum displacement of core hole: M6 · M8 within 0.3 mm, M 10 within 0.5 mm)
  • A thin film coating offers improvements in wear resistance and a reduction of cutting edge chipping.

Tapping Data

Tapping Conditions [M8×1.25]

Workpiece MaterialADC12
Tapping Spoeed50m/min
Number of Holes Tapped50 hole
Bore Diameterφ5.8
Bored Hole Taper Angle
Shape Depth22mm
ConditionBlind hole
Tapping Length17mm
Misalignment AmountX direction + 0.5 mm
Feed TypeSynchronous feed
Machine TypeM / C machine (horizontal type) l
Tapping FluidWater soluble cutting fluid

Reduction of machining time

Correcting misaligned cast pilot holes is unnecessary shortening the tapping process time!

Conventional machining process ACHSP Eliminates drilling

①Cast Hole Processing ②Chamfering ③ Bored Hole Drilling ④ Tapping ①Cast Hole Processing ②Chamfering ③Bored Hole Drilling ④ACHSP Tapping

■Recommendation

Internal coolant supply is recommended to prevent the tapped holes from being blocked by the ejected chips.