Aluminium wheel - mounting bore

Descrizione

Our customer in the automotive industry in China produces about 12 million aluminium wheels for passenger vehicles per year.
The customer is looking for a solution to produce the mounting bore cost-effectively in one operation without having to turn the workpiece.

Application details

Application details

  • Through bore: Ø14.0mm
  • Counterbore forward: Ø36.0 mm
  • 60° Sinking forward on the bore: Ø14.0 mm
  • Back chamfer: 1.0 mm x 45º
  • Material: aluminium

Proposed solution

Proposed solution

The solution from HEULE is a VEX-P combined drill and countersink tool which has been specially adapted for the customer. In one pass and without any further tool change the four form elements can be machined.

The back deburring is executed by the proven SNAP principle.
For the forward counterbore a WSP plate made out of carbide is used.

Machining parameters:
Drill operation:
Speed 3500 rev/min, cutting speed vc 155 m/Min, working feed 0.3 mm/rev

Sinking forward / chamfering backward:
Speed 2800 rev/min, cutting speed vc 140 m/min, working feed 0.1 - 0.15 mm/rev

Customer benefits

Customer benefits

The production of bores and counterbores in aluminium wheels required the use of four different tools. Furthermore, the operation plan included one turning of the workpiece. The maintenance effort and the down time for the readjustment of the repaired tools were considerable. The high costs for the existing tools and the non-guaranteed process capability have been reason enough to rethink the present production sequence.

Customer satisfaction

Customer satisfaction

The customer is very satisfied by the result and the achieved savings of time and money.