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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 (38, Takasago 3-chome, Takaishi-sh, Osaka 01, 〒5920001, JP)
Application Number:
JP2010/060985
Publication Date:
January 05, 2012
Filing Date:
June 28, 2010
Export Citation:
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Assignee:
Noda Kanagata Co., Ltd. (38 Takasago 3-chome, Takaishi-shi Osaka, 01, 〒5920001, JP)
野田金型有限会社 (〒01 大阪府高石市高砂3丁目38番地 Osaka, 〒5920001, JP)
HORIGUCHI, Keiko (14-13, Ohiraki 2-chome Fukushima-ku, Osaka-sh, Osaka 07, 〒5530007, JP)
International Classes:
B23C3/00; B23C3/16
Attorney, Agent or Firm:
ITOH, Hidehiko et al. (IMY INTERNATIONAL PATENT OFFICE, Oriental Sakaisuji Bldg. 21-19, Shimanouchi 1-chome, Chuo-ku, Osaka-sh, Osaka 82, 〒5420082, JP)
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Claims: