Closed door machining

Closed door machining

Maximizing the use of industrial facilities

The closed door machining concept consists of a production line of autonomous machines, capable of continuous machining with minimal human intervention. By using ad hoc processes and supervision, this type of line operates 24/7, while also allowing better planning of workshop tasks, and limiting employee risks during material and parts handling.

Closed Door Machining - Operator

€40 million the capital investmentneeded to build the titanium facility at Bidos in 2012 and 2013

Innovation in action at Safran

Safran Landing Systems has implemented closed door machining at two plants to address the increasingly demanding heightened requirements for the Airbus A350 and Boeing 787 jetliners and significantly boost production performance:

  • The titanium workshop at Bidos (southwest France) which handles the machining of large titanium components, this 5,200 square meter building (56,160 sq ft), houses all machinery and equipment needed to make these parts autonomously. It has cut production cycles in half since 2013;
  • The Mirabel plant, near Montréal in Canada which primarily makes the main fittings for large landing gear. The new building, completed in 2013, has also cut production cycles in half by grouping its machinery and equipment and using digital programming for its machine tools.

Likewise, the Safran Landing Systems plant in Molsheim, eastern France, which mainly turns out wheels and carbon brakes for Airbus jets, operates 24/7 with a team of just ten persons. Since implementing the closed door machining approach, operators no longer have to make adjustments during machining, which has significantly increased the time that machines are in operation (6,500 hours/year, compared with 4,000 previously) and reduced the machining cycle from ten days to just one.

Closed Door Machining - Shop floor
A new role for operators

With closed door machining, operators take on a different role. They move up the skills chain to become coordinators of a machining cell, capable of operating several machines at once. They call on advanced communications (large screens and tablets, etc.) so they can concentrate on high value-added supervision and control tasks, while the machines operate independently.