Door frame area machining

Titanium

Door frame areas refer to areas in the aircraft fuselage that surround cargo doors and passenger doors. These components are important for safety, and must compensate for the structural weaknesses created as a result of openings in the aircraft fuselage.

For this reason, these frames not only need to be precisely manufactured, but also must not warp, even under heavy load. They are therefore mainly made of titanium. In order to prevent crack propagation, the titanium is beta-annealed, which significantly increases tool wear. The frames are also designed with lengths of up to 4 m and incorporate reinforcement bars, requiring high machining volumes in order to machine, without causing the component to warp. The primary focus is therefore on process reliability.


Dynamic milling of titanium structures (High Performance Cutting)

Solution:

Ti40 high-performance milling cutter

  • ► Solid carbide tool for full slotting, dynamic milling, semi-finishing and finishing operations
  • ►  All-rounder with five cutting edges
  • ►  Microgeometry with cylindrical stabilising land
  • ►  New PVD coating technology

Finishing pocket bases and walls (High Performance Cutting)

Solution:

Ti45 high-performance milling cutter

  • ► New PVD coating technology
  • ►  Long reach for machining deep pockets
  • ► Finishing with close pitch options

Drilling CFRP rivet holes (carbon fibre reinforced plastic)

Solution:

Walter Titex AF1D twist drill

  • ► Self-centring AF1D geometry
  • ► Diamond coating for a long tool life
  • ► Specially designed for carbon fibre composite materials
  • ► Usable in CNC systems and automatic drilling units

Drilling stacks

Solution:

Walter Titex AFT4A solid carbide drill

  • ►  Designed for automatic drilling units and CNC systems
  • ►  Stable design with large coolant-throughs
  • ►  Smooth, heat-resistant aluminium chromium nitride coating