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Patent Searching and Data


Title:
BURRING TAPPER MACHINE AND BURRING TAPPING METHOD
Document Type and Number:
Japanese Patent JP2005199283
Kind Code:
A
Abstract:

To provide a burring tapper machine capable of removing whisker-like burrs generated during the burring between the burring and the tapping.

The burring tapper machine comprises a burring punch 7 and a burring die 8 to burr a plate-like workpiece 10, and a tapping means 20 to tap a burring part 10a of the burred workpiece 10. A chamfering tool 12 to chamfer the burring part 10a of the workpiece 10 is provided in the burring die 8 in a rotatable and elevating/lowering manner. By chamfering the burring part 10a by rotatably elevating the chamfering tool 12 after the burring, whisker-like burrs generated during the burring can be removed, and a step and the man hour of manually removing the whisker-like burrs after the burring-tapping can be omitted.


Inventors:
IGARASHI MASAHARU
Application Number:
JP2004005788A
Publication Date:
July 28, 2005
Filing Date:
January 13, 2004
Export Citation:
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Assignee:
HITACHI COMM TECH LTD
International Classes:
B23P13/00; B21D19/00; B21D19/08; (IPC1-7): B21D19/08; B21D19/00; B23P13/00
Attorney, Agent or Firm:
Teruo Aoki