The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 2012
Filed:
Sep. 15, 2010
Marcio Fernando Cruz, Sao Jose dos Campos-SP, BR;
Gustavo Freitas, Novo Hamburgo, BR;
Hamilton Zanini, Sao Jose dos Campos, BR;
Jefferson Adriano Da Costa, Novo Hamburgo, BR;
Robson Fernando DE Oliverira Pereira, Sao Jose dos Campos, BR;
Edson Pereira, Novo Hamburgo, BR;
Fernando Ferreira Fernandez, Sao Jose dos Campos, BR;
Mauricio Andena, Sao Jose dos Campos, BR;
Marcio Fernando Cruz, Sao Jose dos Campos-SP, BR;
Gustavo Freitas, Novo Hamburgo, BR;
Hamilton Zanini, Sao Jose dos Campos, BR;
Jefferson Adriano da Costa, Novo Hamburgo, BR;
Robson Fernando de Oliverira Pereira, Sao Jose dos Campos, BR;
Edson Pereira, Novo Hamburgo, BR;
Fernando Ferreira Fernandez, Sao Jose dos Campos, BR;
Mauricio Andena, Sao Jose dos Campos, BR;
Embraer S.A., Sao Jose dos Campos-SP, BR;
Abstract
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.