公开(公告)号：US10239152B2

公开(公告)日：2019-03-26

申请号：US15498204

申请日：2017-04-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Blair E. Carlson ,  Robert T. Szymanski ,  Yuri Hovanski ,  Spyros P. Mellas ,  Kenneth Ross

IPC: B23K20/12

Abstract: A bobbin tool is disclosed that includes a top shoulder, a bottom shoulder, and an axial pin that extends between the top and bottom shoulders. The bottom shoulder has an annular shoulder end surface, a back surface opposite the annular shoulder end surface, and a side surface that joins the annular shoulder end surface and the back surface. One or more and radially-extending blades may be disposed on the side surface of the bottom shoulder and/or one or more axially-extending blades may be disposed on the back surface. The one or more blades provide the bobbin tool with an ability to friction stir weld a variable thickness workpiece assembly, axially plunged through the workpiece assembly along an axis of rotation of the bobbin tool, and/or be extracted through the workpiece assembly along an axis of rotation of the bobbin tool.

公开(公告)号：US20170304934A1

公开(公告)日：2017-10-26

申请号：US15498204

申请日：2017-04-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Blair E. Carlson ,  Robert T. Szymanski ,  Yuri Hovanski ,  Spyros P. Mellas ,  Kenneth Ross

IPC: B23K20/12

CPC classification number: B23K20/1255 ,  B23K20/1265

Abstract: A bobbin tool is disclosed that includes a top shoulder, a bottom shoulder, and an axial pin that extends between the top and bottom shoulders. The bottom shoulder has an annular shoulder end surface, a back surface opposite the annular shoulder end surface, and a side surface that joins the annular shoulder end surface and the back surface. One or more and radially-extending blades may be disposed on the side surface of the bottom shoulder and/or one or more axially-extending blades may be disposed on the back surface. The one or more blades provide the bobbin tool with an ability to friction stir weld a variable thickness workpiece assembly, axially plunged through the workpiece assembly along an axis of rotation of the bobbin tool, and/or be extracted through the workpiece assembly along an axis of rotation of the bobbin tool.