Embraer S.a.

Jefferson Adriano Da Costa

Fernando Ferreira Fernandez

Marcio Fernando Cruz

Hamilton Zanini

Robson Fernando De Oliverira Pereira

Edson Pereira

Gustavo Freitas

Mauricio Andena

Marcio Cruz

Fernando Ferreira Fernandes

Robson F De Oliveira Pereira

Hamilton Apparecido Zanini

Robson F De Oliviera Pereira

Friction stir welding equipment control force spindle for mounting in an orbital head housing uses a coaxial sensor to measure downforce. Simultaneously, an axial electrical actuator is controlled to dynamically correct the axial tool position during the welding, by a direct axial force system control, in order to maintain controlled downforce according to parameters previously set, based on numerical control. The equipment also sets up, monitors and controls spindle rotation speed, welding speed, acceleration speed and downforce using for example closed loop control functions. A laser system may scan the backing surface before welding and correct original tool path, in order to get an offset tool path. A precision alarm system may provide safe welding while preventing the tool from colliding with the backing surface.

Friction stir welding spindle downforce and other control techniques, systems and methods

Growing community of inventors

Novo Hamburgo, Brazil

Jefferson Adriano Da Costa