Title:
管及び棒の真直度の測定方法並びに装置
Document Type and Number:
Japanese Patent JP2008544253
Kind Code:
A
Abstract:
A method and apparatus for automating the measurement of straightness of linear stock material produced by the operation of a mill. As the linear stock material exits from the mill, sensors acquire a sequence of image or distance measurement pairs associated with the material at discrete longitudinal points over a segment of the material. A processing system utilizes the data pairs to determine a set of centroids for a segment of the material. A virtual axis is identified between centroids associated with the segment, and the processing system determines a measure of deviation of each remaining centroid in a segment from the virtual axis to identify a degree of concavity of the material within the segment, as well as to identify a measure of the angular orientation of the concavity about the virtual axis.
Inventors:
Defenborg, mark
Cyfeld, michael
Cyfeld, michael
Application Number:
JP2008516981A
Publication Date:
December 04, 2008
Filing Date:
June 12, 2006
Export Citation:
Assignee:
THE TIMKEN COMPANY
International Classes:
G01B11/30
Attorney, Agent or Firm:
Kishimoto Tatsuto
Akihiko Yamashita
Tetsuro Hoshino
Akihiko Yamashita
Tetsuro Hoshino
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