Title:
PERIMETER CORRECTING METHOD FOR PLASTICALLY DEFORMABLE RING
Document Type and Number:
Japanese Patent JP3854197
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a perimeter correcting method which can reduce a variation in the perimeter after the correction.
SOLUTION: This perimeter correcting method includes a first step of correcting the perimeter of a first group of rings based on an initial elongation level and then measuring the perimeters as the first corrected perimeter, determining the average of the perimeters as a first average, determining the difference of the average from a desired perimeter to provide a first perimeter difference, and adding the correction level based on the first perimeter difference to the initial elongation level to determine a first correction elongation level, and a second step of correcting the perimeter of a second group of rings based on the first correcting elongation level, determining second corrected perimeters on the assumption that the perimeter has been corrected based on the initial elongation level, determining the average of the perimeters as a second average, determining the average of the first and second averages to provide a total average, determining the difference of the total average from the desired perimeter to provide a second perimeter difference, and adding the correction level based on the second perimeter difference to the initial elongation level to provide a second correction elongation level. The second average is obtained by subtracting the correction level based on the first perimeter difference from the average of corrected perimeters of the second group of rings which have been corrected based on the first corrected elongation level. The second step is repeated.
Inventors:
Yuichi Nagao
Yuji Takahashi
Takehisa Kimura
Osamu Takenaka
Yuji Takahashi
Takehisa Kimura
Osamu Takenaka
Application Number:
JP2002173343A
Publication Date:
December 06, 2006
Filing Date:
June 13, 2002
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
B21D1/10; B21D53/14; (IPC1-7): B21D1/10; //B21D53/14
Domestic Patent References:
| JP2001140986A |
Attorney, Agent or Firm:
Tatsuhiko Sato
Takehiro Chiba
Takehiro Chiba