Title:
GRINDING DEVICE
Document Type and Number:
Japanese Patent JP2014223697
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a grinding device capable of efficiently grinding a processed hole having a taper face in an end opening.SOLUTION: A grinding device 1 for grinding a processed hole 3 having a taper face 3a inclined to expand an upper end opening comprises: a revolving shaft 4 arranged coaxially with the processed hole 3 and made movable in an axial direction X; a first grinding part 5 disposed integrally rotatably at the lower end part of the revolving shaft 4, for grinding the inner circumference 3b on the lower end side of the taper face 3a of the processed hole 3; and a second grinding part 6 disposed integrally rotatably at the upper end part of the first grinding part 5 of the revolving shaft, for grinding the taper face 3a.
Inventors:
OGAKI FUMIO
TANAKA HIROSHI
TANAKA HIROSHI
Application Number:
JP2013104068A
Publication Date:
December 04, 2014
Filing Date:
May 16, 2013
Export Citation:
Assignee:
NISSHIN SEISAKUSHO KK
International Classes:
B24B9/00; B24B33/02; B24B33/08
Attorney, Agent or Firm:
Patent business corporation Sun Crest international patent firm
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