公开(公告)号：US6070784A

公开(公告)日：2000-06-06

申请号：US112037

申请日：1998-07-08

Applicant: Elmo S. Holt ,  Larry J. Lang

Inventor： Elmo S. Holt ,  Larry J. Lang

IPC: B23K20/12 ,  B23K31/02

CPC classification number: B23K20/126 ,  B23K20/129 ,  B23K2201/04 ,  B23K2201/06

Abstract: A welding apparatus (28) for forming a circumferential weld (56) includes a base (30) and a spindle (32) extending perpendicularly from the base. Along the spindle, at its proximal and distal portions, first and second workpiece supporters (38, 40) are provided, respectively, to position workpieces (42) to be welded together therebetween. Between the first and second workpiece supporters, a first arm (44) and a second arm (48) are provided, both extending perpendicularly from the spindle. To a distal end of the first arm, an internal backup roller (46) is rotatably attached, and to a distal end of the second arm, an internal drive roller (50) is rotatably attached. One or more external rollers (52a, 52b), each rotatably attached to an external support (66), are further provided. The internal and external rollers are driven by variable-speed programmable motors (not shown). In operation, the workpieces are mounted onto the apparatus, being sandwiched between the internal rollers and the external rollers. A friction stir welding tool (58) is positioned externally with its probe opposing the internal backup roller. As the programmable motors drive the rollers to continuously draw the workpieces between the friction stir welding tool and the internal backup roller, the friction stir welding tool forms a circumferential weld to join the workpieces together.

Abstract translation: 用于形成圆周焊缝（56）的焊接装置（28）包括基部（30）和从基部垂直延伸的主轴（32）。 沿着主轴，在其近端和远端部分分别设置有第一和第二工件支撑件（38,40），以将待焊接在一起的工件（42）定位。 在第一和第二工件支撑件之间，设置有从主轴垂直延伸的第一臂（44）和第二臂（48）。 在第一臂的远端，可旋转地安装有内部支承辊（46），并且在第二臂的远端可旋转地安装有内部驱动辊（50）。 还设置有一个或多个可旋转地连接到外部支撑件（66）的外部辊（52a，52b）。 内部和外部辊由可变速可编程电机（未示出）驱动。 在操作中，工件被安装到设备上，夹在内部辊和外部辊之间。 摩擦搅拌焊接工具（58）位于外部，其探针与内部支撑辊相对。 由于可编程电机驱动辊子以将工件在摩擦搅拌焊接工具和内部支撑辊之间连续地拉伸，所以摩擦搅拌焊接工具形成周向焊缝以将工件连接在一起。