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What is drilled?

  • The window frames of the cockpit

What is Lübbering's solution?

  • L.ADU locking system C-Frame (CF)
  • The Frame is called C-Frame because of its form and it is available in different sizes
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What is drilled?

  • A wing consists of a front spar, a mid spar and a rear spar
  • Cleats are used to connect the stringers with the rib. Thus, the wing gets stabilized
  • Skin to rib

What are the difficulties?

  • Because of the heavily accessible places a hand-operating L.ADU is needed
  • Cleats have piloted holes for much easier positioning of the drilling unit
  • Skin to rib: critical access – manhole area

What is Lübbering's solution?

  • One-shot drilling and countersinking
  • With L.ADU pneumatic Concentric Collet (CC) and L.ADU pneumatic Twist Lock (TL) it is easy to drill holes through the front spars, mid spars and rear spars
  • With L.ADU pneumatic C-Frame (CF) it is easy to drill holes through the piloted hole of the cleat into the rib
  • For the skin to rib application we recommend the L.ADU pneumatic HS 60 (High-Speed) with delta traverse unit and reaction arm
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What is drilled?

  • Assembly of all sections of the fuselage

What is Lübbering's solution?

  • L.ADU pneumatic Concentric Collet (CC)
  • No gaps between thin material layers (stacks) due to high clamping force
  • Nose pieces in full surface contact with component guarantees nearly 100% extraction of chips and dust
  • Highly effective in dust / chip extraction and countersinking due to full surface contact
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What is drilled?

  • For the gear rib assembly, it is necassary to drill holes through the subfloor of the fuselage
  • After that the gear rib can be assembled

What is Lübbering's solution?

  • L.ADU electronic 520 with L.ADU locking system Taperlock (TPL)
  • 1st step: 1“ pre-drilling and 1“ ream and countersinking
  • 2st step: bolts are sticked into the drilled holes and after that cap nuts are sticked onto it
  • The large arm of the fastening tool is needed, because one is not able to hold the cap nut with his own hands and the air plane doesn‘t get damaged
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What is drilled?

  • For the engine assembly, it is necassary to drill holes through the junction under the wing

What is Lübbering's solution?

  • L.ADU electronic 520 with L.ADU locking system Twist Lock (inline and right-angled version)
  • Adaptive Drilling Performance: automatic spindle speed adjustment due to automatic material detection of stacks
  • Significant reduction of drilling cycle times through cutter breakthrough sensor
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What is drilled?

  • The wings are finally assembled onto the fuselage
  • To put in the screw connectors, it is necessary to drill the corresponding holes

What is Lübbering's solution?

  • L.ADU pneumatic Taperlock (TPL)
  • Designed for larger holes
  • Can take a high feed force
  • One-shot drilling and countersinking: due to the contact between nose piece and surface, it can countersink
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What is drilled?

  • Longitudinal seams

What is Lübbering's solution?

  • L.ADU pneumatic Vacuum Traverse (VT) and L.ADU pneumatic HS 60 (High speed)
  • Through locking onto the surface via vacuum pads, the drilling machines enable precise drill holes and a secure handling
  • Easy positioning through either a pilot cutter, a pilot target or a cheap and simple strip template
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What is drilled?

  • Pre-shell assembly
  • Spar joints assembly
  • Floor grid assembly
  • Seat rails assembly

What are the difficulties?

  • A high clamping force is necessary to drill precise holes through the shell
  • A very tight access to the floor grid
  • A lot of individual components and series

What is Lübbering's solution?

  • Pre-shell assembly: L.ADU pneumatic Concentric Collet (type 55) ensures a high clamping force for all drilling operations
  • Floor grid: L.ADU pneumatic Geared Offset (GO) for very tight accesses
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What is drilled?

What is Lübbering's solution?

  • L.ADU pneumatic Vacuum Traverse (VT)
  • Locks onto the surface via vacuum pads
  • Easy positioning through either a pilot cutter, a pilot target or a cheap and simple strip template
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What is drilled?

  • Drilling holes through the rear fuselage to assemble the Horizontal Tail Plane (HTP) and Vertical Tail Plane (VTP)

What is Lübbering's solution?

  • L.ADU pneumatic Concentric Collet (CC)
  • No gaps between thin material layers (stacks) due to high clamping force
  • Nose pieces in full surface contact with component guarantees nearly 100% extraction of chips and dust
  • Highly effective in dust / chip extraction and countersinking due to full surface contact