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Cam shaft manufacturing method and gear shaft manufacturing method
This cam shaft manufacturing method has: a split mold group preparation step; a processing preparation step, wherein cams (equipped with cam main bodies having a through-hole and smaller in size thanExpand
Procédé de fabrication d'arbre à cames et procédé de fabrication d'arbre d'engrenage
L'invention concerne un procede de fabrication d'arbre a cames qui comprend : une etape de preparation de groupe de moules divises ; une etape de preparation de traitement consistant a preparer desExpand
Method for manufacturing different-thickness steel pipe, and different-thickness steel pipe
This method for manufacturing a different-thickness steel pipe, which manufactures a different-thickness steel pipe from a hollow cylindrical element pipe, has: a locking step, wherein the elementExpand