| 摘要 |
A method and apparatus for welding a first workpiece which is to be joined to a second workpiece, with said first workpiece extending within or through the second workpiece. The apparatus includes a rotatable workpiece drive member, a workpiece holding fixture for securing at least one other workpiece in position relative to the first workpiece and a radial support for the first workpiece that is separate and spaced from the drive member. Among the preferred embodiments disclosed for providing the radial support are a tailstock supporting sleeve arrangement, collet chucking, and roller type steady rests.
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