Title:
Indexable drill insert
Document Type and Number:
Japanese Patent JP6319950
Kind Code:
B2
Abstract:
The present disclosure relates to a quadrangular indexable drill insert. The drill insert includes a substantially flat top surface, a bottom surface and a side surface adjoining the top and bottom surfaces. The side surface comprises four identical cutting edges intersecting the top surface; each cutting edge comprises a first part edge oriented inwardly towards axis of the drill body. A second part edge tangential to an imaginary inscribed circle diameter connected to the first part edge through a convex curve. A third part connected to the second part edge through concave curve and a fourth part edge connected to the third part edge though a convex curve. The insert further includes a curved nose portion at four corners, each adjoining a first part edge of one cutting edge with a fourth part edge of a succeeding cutting edge.
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Inventors:
Ramesh Caltic
Application Number:
JP2013108525A
Publication Date:
May 09, 2018
Filing Date:
May 23, 2013
Export Citation:
Assignee:
Kennametal India Limited
International Classes:
B23B51/00
Domestic Patent References:
| JP2010528890A | ||||
| JP2007203454A | ||||
| JP2012525271A |
Foreign References:
| WO2010126693A1 | ||||
| WO2013003874A1 |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Kato Kazunori
Katsuichi Nishimoto
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