ELBOW FORMED BY CUTTING AND METHOD FOR MANUFACTURING SAME

Title:

ELBOW FORMED BY CUTTING AND METHOD FOR MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2012/001761

Kind Code:

A1

Abstract:

A method for forming an elbow by cutting forms the hole of the elbow by performing the following steps: a step for forming in a material a starting hole having an uncut section left on the hole surface; a step for finishing the inner diameter of the portion of the starting hole (11-3), which is located on one side thereof, using a side cutter (II) provided with a circular arc-shaped cutting edge and having an outer diameter smaller than the diameter to which the hole is to be finished, the side cutter (II) being operated in such a manner that the cutter is revolved while being rotated in an attitude tilted in a predetermined direction relative to the material (12), the revolution of the side cutter (II) being performed in such a manner that the cutter moves along the hole surface to be finished; and a step for finishing the inner diameter of the portion of the starting hole (11-3), which is located on the other side thereof, by revolving and rotating the side cutter (II).

Inventors:

HORIGUCHI NOBUO (JP)

Application Number:

PCT/JP2010/060985

Publication Date:

January 05, 2012

Filing Date:

June 28, 2010

Export Citation:

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Assignee:

NODA KANAGATA CO LTD (JP)
HORIGUCHI KEIKO (JP)
HORIGUCHI NOBUO (JP)

International Classes:

B23C3/00; B23C3/16

Foreign References:

JPS5133390A	1976-03-22
JPS62271616A	1987-11-25
JPS6127570U	1986-02-19
JPH0741315B2	1995-05-10
JP2000343136A	2000-12-12
JP3352052B2	2002-12-03

Other References: