Flange for Double Row Taper Bearing

Description

A roller bearing manufacturer in South Korea wanted to implement the most cost efficient method to drill and deburr holes into a bearing flange into their new development. 

Application details

Application details

  • Drilling: 9 holes Ø8.8 mm
  • Drilling: 3 holes Ø7.1 mm
  • Workpiece thickness: 6.0 mm
  • Chamfering: front and back
  • Material: Alloyed tool steel
  • Production volume: 2 million parts/a
  • Machine: DMG MORI Tapping Center

Proposed solution

Proposed solution

HEULE proposed two VEX-S combination drilling tools, for each diameter one. The combination of drilling and chamfering at the front and the back of the bore reduces the three different operation steps to a single on.

Machining parameters:

  • Drilling Ø8.8 mm & Ø7.1 mm:
    Working speed: 88 m/min
    Working feed: 0.25 mm/rev.
  • Front and Back chamfer
    Working speed: 88 m/min.
    Working feed: 0.2 mm/rev.
  • Cycle Time for both operations: 3 sec.

Customer benefits

Customer benefits

The benefits are enormous. Since this solution divides the cycle time by two, the production time saved amounts to 20'000 hours (2 million parts x 12 bores x 3 sec.). The cost savings not only concern the production time but also the investments in machinery that have been rendered redundant.