Title:
ANNULAR CUTTER
Document Type and Number:
Japanese Patent JP2558054
Kind Code:
B2
Abstract:
PURPOSE: To provide a new annular cutter capable of being attached to a drilling device by selecting the annular cutter adaptable to the drilling device from various kinds of cutters, and thereby the attachment/detachment work of the annular cutter is easy.
CONSTITUTION: A lock member 7 provided on an arbor is in the state where the part is partially and always protruded into a hole. On the other hand, a lock member passing part 9a for allowing one part of the lock member 7 protruded in the hole of the arbor 1 to pass through it is formed in an inserting part 9 of an annular cutter 6. Various kinds of shapes such as that wherein one part of the inserting part is chamfered, that wherein one part on the tip has small diameter or that provided with a recessed part to be matched to the lock member 7 can be adopted as the shape of the lock member passing part 9a. Annular cutter other than that provided with the lock member passing part for allowing the lock member 7 to pass through it can not be attached to this annular cutter attaching/detaching device, thereby, mis-attachment of the annular cutter can be prevented.
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Inventors:
ASANO OSAMU
TANAKA YUTAKA
TANAKA YUTAKA
Application Number:
JP18352393A
Publication Date:
November 27, 1996
Filing Date:
June 30, 1993
Export Citation:
Assignee:
NITTO KOHKI CO
International Classes:
B23B31/107; B23B31/02; B23B31/22; B23B51/04; (IPC1-7): B23B51/04; B23B31/107
Domestic Patent References:
| JP6274515A | ||||
| JP2111504U |
Foreign References:
| US3747946A |
Attorney, Agent or Firm:
Nagase Seijo (1 person outside)
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