| 摘要 |
A machine for simultaneously caulking both axial ends of an object, in which an upper pressure plate having a first caulking punch mounted thereon is screwed to one side of left and right ball threads, and a lower pressure plate having a second caulking punch mounted thereon is screwed to the other side of the left and right ball threads in such a way that the upper pressure plate and the lower pressure plate move relative to each other in a direction parallel to a caulking direction.
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