Large workpiece (exceeding 6m in Ø)

Descrizione

HEULE was selected to provide the technology for a challenging project with a French foundry. The company also owns numerous cutting machines and carries out additional assembly work. The customer is a long-standing partner in industries such as wind energy, mechanical engineering, shipbuilding, transport, the automotive industry and aerospace.

For the extremely large workpieces, backward countersinking is a common issue. In the example described below, two methods have so far been used to machine the countersink. First, a relatively weak eccentric tool (with an effective length more than 80 mm, roughing/finishing) was used. Second, a manual screw-on backward countersink was used, which in itself introduced critical safety implications. Both methods resulted in long machining times, which led to high process costs for the customer.

Together with HEULE, a solution was developed which is extremely reliable and considerably reduces the machining costs for the customer.

Application details

Application details

  • Bore diameter: 14.0 mm
  • Diameter countersink: Ø22.0 mm +/- 0.3
  • Spot facing depth: 8.00-10.00 mm
  • Working length: 80.0 mm
  • Material: Raw Cast Steel (GJS400 / GGG40)
  • Machine: Special machine CNC
  • Machining: Horizontal machining with internal cooling

Solution proposed by HEULE

Solution proposed by HEULE

Tool: SOLO2
Tool reference number: GH-B-O-0358

Machining parameters:

  • Speed: 70m/min
  • Feed: 0.07 mm/turn

Life time blade: 1280 Countersink (1 blade per workpiece)

Customer benefits

Customer benefits

By using the HEULE tool system, the customer saves at least 10 hours machining time per workpiece. The SOLO2 enables a massive optimisation of the process time and dramatically improves health & safety in the workplace for all employees.

Customer satisfaction

Customer satisfaction

The customer is very satisfied with the implemented solution. The reverse machining process was optimised and a significant improvement to the tool life achieved. The customer intends to contact HEULE for future reverse countersinking machining projects.