B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 20/12 (2006.01)
Patent
CA 2679821
Friction stirred welding equipment, developed according to requirements of high reliability, robustness, precision and low cost, weld lap and butt joints in complex surfaces with fixed pin tool under controlled downforce. Exemplary equipment comprises a control force orbital spindle, wherein a coaxial sensor measures the downforce and simultaneously the axial electrical actuator corrects axial tool position along the welding, by a direct axial force system control, in order to maintain controlled downforce according to previously set parameters. The equipment sets up, monitors and controls the spindle rotation speed, welding speed, acceleration speed and downforce and can record in a database the downforce and tool welding position during the welding. The exemplary equipment may also comprise a laser system that scans the backing surface before welding and corrects original tool path, in order to provide an offset tool path and precision alarm system to get a safe welding, avoiding tool collision with the backing.
Andena Mauricio
Cruz Marcio
Da Costa Jefferson Adriano
de Oliveira Pereira Robson F.
Fernandes Fernando Ferreira
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Embraer - Empresa Brasileira de Aeronautica S.a.
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