Abstract:
Cabezal de máquina herramienta para soldeo por fricción batida, con un pisador (2) flotante y rotatorio conectado en un extremo de un soporte cilíndrico (4) con un canal interno (4a) axial, un tetón rotatorio (3) que emerge de un pisador (2) y está conectado a un motor (7) mediante un eje propulsor (8) dispuesto en el canal interno (4a) de forma que el soporte cilíndrico (4) puede desplazarse axialmente con respecto al eje propulsor (8), y medios de ajuste (5) para ajustar la posición relativa entre el pisador (2) y el tetón (3) en el material a soldar, estando el soporte (4) y el eje (8) acoplados en unión de chaveta deslizante de manera que el giro del eje (8) confiere su movimiento rotatorio simultáneamente al tetón (3) y al soporte (4), y estando el soporte (4) dispuesto giratoriamente en una estructura de soporte móvil (10) axialmente desplazable por los medios de ajuste (5) con respecto al eje propulsor (8).
Abstract:
A friction stir welding device may include a rotatable head, a rotatable upper shoulder, a lower shoulder and a pin device. The rotatable head includes a first multisided connection portion. The rotatable upper shoulder includes a first cavity and a second multisided connection portion. The second multisided connection portion is configured to engage the first multisided connection portion. The lower shoulder includes a second cavity and a third multisided connection portion. The pin device includes a first end and a second end. At least a portion of the second end includes a fourth multisided connection portion. The fourth multisided connection portion can be configured to engage the third multisided connection portion. The pin device may be configured to retractably traverse the rotatable upper shoulder via the first cavity. The rotatable upper shoulder, the pin device and the lower shoulder may be configured to friction stir weld a workpiece.
Abstract:
A component is formed by welding a plurality of sheets (802, 804) of metal to form a blank with a number of weld nuggets (918), placing the blank between a die section and a lid section, heating the die section to heat the blank, and introducing a pressurized gas between the lid section and the die section to press the blank into a mold in the die section to form a component. The number of weld nuggets (918) has a desired thickness ratio between about 1.1 to about 1.25 such that the plurality of sheets (802, 804) of metal and the component formed have a number of characteristics that are substantially the same.
Abstract:
Device and method for friction stir welding. Therein, a rotating shoulder generates heat on the interface of two workpieces to be joined together, material being supplied to the connecting region thus obtained. The invention proposes supplying this material under elevated temperature, thus allowing the generated amount of frictional heat to be limited. This allows the extent of the heat affected zone by the heating to remain limited and the quality of the connection to be improved. According to a particular variant of the invention, melted material is placed under pressure and extruded outward, through a hollow pin at the centre of the shoulder, into the melting bath.
Abstract:
The present invention is directed to apparatus and methods for clamping and controlling flash around a manufacturing tool engaging a workpiece and preventing fill within the workpiece. In one embodiment, a clamp for securing a workpiece during a manufacturing operation includes a housing (120) and a foot (130) biased away from the housing, the foot defining an opening through which a manufacturing tool may pass to engage the workpiece. In another embodiment, the manufacturing tool is a rotating or counter-rotating shoulder friction stir spot welding tool. In accordance with other aspects of the invention, the foot defines at least one recess for holding flashing.
Abstract:
A friction agitation welding apparatus comprises a threaded shaft (46) fixedly connected to a motor shaft, a slide housing (48) in engagement with the threaded shaft (46) for vertical movement, a first drive shaft (58) supported for rotation by but coupled fixedly in axial movement to the slide housing (48) and equipped with a friction agitation welding tool (4), and a second drive shaft (64) fixedly connected to a motor shaft and telescopically supported by but coupled fixedly in relative rotation to the first drive shaft (58), moves to advance the friction agitation welding tool (4) to urge superposed workpiece to be joined. When the second drive shaft (64) is rotated, the first drive shaft (58), and hence the friction agitation welding tool (4), rotates even while the friction agitation welding tool (4) urges the superposed workpieces.
Abstract:
There are provided an apparatus and method for friction welding structural members (60, 62). The apparatus -includes a connected shank (20) and probe (22). The probe (22) and the shank (20) defines an absorption surface (32) and a cavity (26) extending thereto. The absorption surface (32) is configured to receive electromagnetic radiation (52) from an electromagnetic radiation source (50) such as a light source or RF generator. The radiation (52) heats the probe (22), supplementing the heat generated by friction between the probe (22) and the structural members (60, 62), and thereby increasing the speed at which the probe (22) can be used to frictionally weld the structural materials (60, 62).