Outer bearing

Descrizione

The bearing manufacturer would like to reduce the cycle time. The present time consumption for machining for drilling and interpolar milling amounts to 26 seconds.

Application details

Application details

  • Four through holes Ø8.5mm.
  • Three operations:
    Drilling
    Countersinking forward Ø11.0 x 90°
    Deburring backwards max. 0.5 x 45°
  • Material: S55CR (approx. 700 -  900 N/mm2)
  • Volume: 1.8 Mio. workpieces per year = 7.2 Mio. bores per year

Proposed solution

Proposed solution

HEULE designed a customized tool based on the VEX-S technology for this application. Together with the SNAP chamfering blade and the indexable inserts for the countersinking this tool combines all three machining steps to on single operation.

The following machining parameters enable the combination tool to achieve a cycle time of under 16 seconds:

Machining parameter:
Drilling: Speed 3500 rev/min., Feed 0.2 mm/rev.
Countersinking: Speed 2000 rev/min., Speed 0.12 mm/rev.
Deburring backwards: Speed 2000 rev/min., Feed 0.12 mm/rev.

Customer benefits

Customer benefits

Reducing the cycle time by approx. 10 seconds (= less 38%) resulted in an overall reduction of the machining time of 20'000 hours.