Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD AND DEVICE FOR DETERMINING CENTER HOLE OF CRANKSHAFT
Document Type and Number:
WIPO Patent Application WO/2010/013560
Kind Code:
A1
Abstract:
To determine the position of the center hole of a crankshaft easily and appropriately.  A method for determining the center hole of a material crankshaft formed by means of an upper die and a lower die comprises first through fourth steps.  In the first step, profile data about each part formed by the upper and lower dies is acquired.  In the second step, the gap of each part due to mismatch is calculated by comparing the measurement data of each part with corresponding design data.  In the third step, actual profile data is reproduced by interpolating the data corresponding to the gap based on the gap.  In the fourth step, a center hole is determined based on the actual profile data such that rotational balance of the material crankshaft falls within a predetermined range.

Inventors:
YOSHIMOTO, Akihiro (Futsu-machi Komatsu-sh, Ishikawa 92, 〒9230392, JP)
Application Number:
JP2009/061581
Publication Date:
February 04, 2010
Filing Date:
June 25, 2009
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KOMATSU MACHINERY CORP. (Jigata 5 Youkaichi-machi, Komatsu-shi Ishikawa, 66, 〒9238666, JP)
コマツ工機株式会社 (〒66 石川県小松市八日市町地方5 Ishikawa, 〒9238666, JP)
International Classes:
B23Q17/00; F16C3/08; G05B19/4097
Foreign References:
JPH09174382A
JPS5176682A
JPH03254327A
JPH05349A
JPH09174382A
JPS5176682A
Other References:
See also references of EP 2305420A1
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (South Forest Bldg, 1-4-19 Minamimori-machi, Kita-ku, Osaka-sh, Osaka 54, 〒5300054, JP)
Download PDF: