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Title:
CYLINDER BLOCK AND METHOD OF MACHINING SAME
Document Type and Number:
WIPO Patent Application WO/2011/152216
Kind Code:
A1
Abstract:
Disclosed is a cylinder block that, using existing equipment, can increase the cylindricity of a bore when fastening a cylinder head. Further disclosed is a method for machining same. The machining shape of the bore (111) is obtained on the basis of the amount of deformation of a data-acquisition bore (211) at the time of fastening the cylinder head (220). Here, the cross section of an approximate shape that approximates the deformed shape of the data-acquisition bore (211) is set to a nearly perfect circle shape, and in accordance with the degree of deformation of the data-acquisition bore (211), by means of changing the diameter of the nearly perfect circle shape along a central axis line, the approximate shape (shape indicated by line T) is determined, and so the approximate shape is a simple shape that is symmetrical with respect to the central axis line and forms a nearly perfect circle shape in a cross section. The machining shape of the bore (111) has a shape (shape indicated by line V) that reverses the phase of concavoconvexity with respect to the predetermined cylindrical shape of the simple approximate shape, and so the cross section thereof forms a nearly perfect circle shape forming a simple shape that is symmetrical with respect to the central axis line.

Inventors:
OSUGI, Akihiro (6-1, Hagadai, Hagamachi, Hagagu, Tochigi 95, 〒3213395, JP)
大杉 晃広 (〒95 栃木県芳賀郡芳賀町芳賀台6番地1 ホンダエンジニアリング株式会社内 Tochigi, 〒3213395, JP)
ONISHI, Masao (6-1, Hagadai, Hagamachi, Hagagu, Tochigi 95, 〒3213395, JP)
大西 正夫 (〒95 栃木県芳賀郡芳賀町芳賀台6番地1 ホンダエンジニアリング株式会社内 Tochigi, 〒3213395, JP)
SOGAWA, Kazushi (6-1, Hagadai, Hagamachi, Hagagu, Tochigi 95, 〒3213395, JP)
曽川 和史 (〒95 栃木県芳賀郡芳賀町芳賀台6番地1 ホンダエンジニアリング株式会社内 Tochigi, 〒3213395, JP)
AKAISHI, Nobuyuki (4-1, Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
Application Number:
JP2011/061424
Publication Date:
December 08, 2011
Filing Date:
May 18, 2011
Export Citation:
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Assignee:
HONDA MOTOR CO., LTD. (1-1 Minami-Aoyama 2-chome, Minato-ku Tokyo, 56, 〒1078556, JP)
本田技研工業株式会社 (〒56 東京都港区南青山二丁目1番1号 Tokyo, 〒1078556, JP)
OSUGI, Akihiro (6-1, Hagadai, Hagamachi, Hagagu, Tochigi 95, 〒3213395, JP)
大杉 晃広 (〒95 栃木県芳賀郡芳賀町芳賀台6番地1 ホンダエンジニアリング株式会社内 Tochigi, 〒3213395, JP)
ONISHI, Masao (6-1, Hagadai, Hagamachi, Hagagu, Tochigi 95, 〒3213395, JP)
大西 正夫 (〒95 栃木県芳賀郡芳賀町芳賀台6番地1 ホンダエンジニアリング株式会社内 Tochigi, 〒3213395, JP)
SOGAWA, Kazushi (6-1, Hagadai, Hagamachi, Hagagu, Tochigi 95, 〒3213395, JP)
曽川 和史 (〒95 栃木県芳賀郡芳賀町芳賀台6番地1 ホンダエンジニアリング株式会社内 Tochigi, 〒3213395, JP)
International Classes:
F02F1/00; B24B33/02; B24B33/08
Attorney, Agent or Firm:
SUENARI, Mikio (Asaco Kyobashi Building 3rd floor, 6-13 Kyobashi 1-chome, Chuo-k, Tokyo 31, 〒1040031, JP)
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Claims: