Title:
CRANKSHAFT SHAPE INSPECTION METHOD, COMPUTATION DEVICE, PROGRAM, AND SHAPE INSPECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/224404
Kind Code:
A1
Abstract:
This crankshaft shape inspection method comprises: an acquisition step for acquiring three-dimensional point cloud data for the surface of a crankshaft S; a generation step for using the three-dimensional point cloud data to generate first point cloud data based on point cloud data generated through independent point removal in which data points having a distance from the closest data point greater than or equal to a first threshold Th1 are removed and generate second point cloud data based on point cloud data generated through independent point removal in which data points having a distance from the closest data point greater than or equal to a second threshold Th2 (greater than the first threshold Th1) are removed; and a calculation step for using the first point cloud data to calculate the lateral dimensions of a counterweight SC and using the second point cloud data to calculate the longitudinal direction position of the counterweight SC.
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Inventors:
ISEI YOSHITO (JP)
SAKAI KOUSUKE (JP)
IKEDA SHINYA (JP)
USUTANI YUKI (JP)
SAKAI KOUSUKE (JP)
IKEDA SHINYA (JP)
USUTANI YUKI (JP)
Application Number:
PCT/JP2021/016292
Publication Date:
October 27, 2022
Filing Date:
April 22, 2021
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
G01B11/24
Domestic Patent References:
| WO2016194728A1 | 2016-12-08 | |||
| WO2017159626A1 | 2017-09-21 |
Attorney, Agent or Firm:
KOKUBUN, Takayoshi (JP)
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