| 摘要 |
PROBLEM TO BE SOLVED: To provide a burring device capable of efficiently and continuously performing burring. SOLUTION: The burring device comprises a work holder 10 which has a hole 14 for burring and holds a work 50, an pressing rod 20 to turnably support the base end of a core 22 having a working part 22a on a tip thereof, and a guide rod 30 which is arranged at the forward part of the extension of the axis of the extrusion rod 20 and has a guide face 32 to guide the tip of the core 22 toward the hole 14 for burring of the holder 10 on a tip thereof. COPYRIGHT: (C)2006,JPO&NCIPI
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