| 摘要 |
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 ). When the threaded shaft ( 46 ) is rotated, the slide housing ( 48 ), and hence the first drive shaft ( 58 ), moves to advance the friction agitation welding tool ( 4 ) to urge superposed workpieces 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.
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