Title:
SHAPE DEFECT FACTOR IDENTIFICATION METHOD, DEVICE, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2008/026716
Kind Code:
A1
Abstract:
Provided is a method for rapidly, surely, and easily identifying a factor of a
shape defect of an artifact attributed to elastic recovery of deformation upon
molding by using the numeric value simulation technique, thereby eliminating
lowering of dimension accuracy. The method includes a step (S1) of calculating
a stress distribution and distortion distribution working on an artifact before
elastic recovery; a step (S2) of calculating a deformation amount δ0 based
on the elastic recovery of an evaluation point A when the stress distribution
is given to the artifact shape before the elastic recovery; a step (S3) of dividing
the artifact shape into a plurality of regions and calculating a deformation
amountδn based on the elastic recovery of the evaluation point A when the
stress distribution is given to each of the regions of the artifact shape before
the elastic recovery; and a step (S4) of comparing the deformation amountδ0
and the deformation amount δn and identifying a region where the difference
between them is minimum as a main affect region N, i.e., a stress distribution
region which most affects the shape defect of the evaluation point before and
after the elastic recovery.
Inventors:
NONOMURA, Kiyoshi (1 Toyota-cho, Toyota-sh, Aichi 71, 4718571, JP)
野々村潔 (〒71 愛知県豊田市トヨタ町１番地トヨタ自動車株式会社内 Aichi, 4718571, JP)
IWAYA, Jiro (Kanazawa-cho 1, Kakogawa-sh, Hyogo 37, 6750137, JP)
野々村潔 (〒71 愛知県豊田市トヨタ町１番地トヨタ自動車株式会社内 Aichi, 4718571, JP)
IWAYA, Jiro (Kanazawa-cho 1, Kakogawa-sh, Hyogo 37, 6750137, JP)
Application Number:
JP2007/066963
Publication Date:
March 06, 2008
Filing Date:
August 24, 2007
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi Aichi, 71, 4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町１番地 Aichi, 4718571, JP)
KABUSHIKI KAISHA KOBE SEIKO SHO (10-26, Wakinohama-cho 2-chome Chuo-ku, Kobe-sh, Hyogo 85, 6518585, JP)
株式会社神戸製鋼所 (〒85 兵庫県神戸市中央区脇浜町２丁目１０－２６ Hyogo, 6518585, JP)
NONOMURA, Kiyoshi (1 Toyota-cho, Toyota-sh, Aichi 71, 4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町１番地 Aichi, 4718571, JP)
KABUSHIKI KAISHA KOBE SEIKO SHO (10-26, Wakinohama-cho 2-chome Chuo-ku, Kobe-sh, Hyogo 85, 6518585, JP)
株式会社神戸製鋼所 (〒85 兵庫県神戸市中央区脇浜町２丁目１０－２６ Hyogo, 6518585, JP)
NONOMURA, Kiyoshi (1 Toyota-cho, Toyota-sh, Aichi 71, 4718571, JP)
International Classes:
B21D22/00; G06F17/50; B21D22/00; G06F17/50
Attorney, Agent or Firm:
YANO, Juichiro (YANO INTERNATIONAL PATENT OFFICE, Twin 21 MID Tower 34th Floor 1-61, Shiromi 2-chome,Chuo-ku, Osaka-sh, Osaka 34, 5406134, JP)
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