Title:
INSPECTION METHOD AND INSPECTION DEVICE FOR CONNECTING ROD
Document Type and Number:
WIPO Patent Application WO/2022/080170
Kind Code:
A1
Abstract:
In the inspection method and the inspection device for a connecting rod according to the present invention, an image for inspection (P) of a predetermined portion located on a major diameter pin hole (102a) side, including a joining portion (105), and viewed from the hole axial direction of the major diameter pin hole (102a) is acquired, a rod-side approximate circle (C1) conforming to a rod-side pin hole (102d) being a portion on a rod side in the major diameter pin hole (102a) is calculated from the image for inspection (P), a cap-side approximate circle (C2) conforming to a cap-side pin hole (102e) being a portion on a cap side in the major diameter pin hole (102a) is calculated from the image (P) for inspection, and the rod-side approximate circle (C1) and the cap-side approximate circle (C2) are used to determine whether or not the amount of a step of the joining portion (105) is larger than or equal to a predetermined threshold value.
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Inventors:
TACHI TOMOHIRO (JP)
MACHINO TOMOYA (JP)
MACHINO TOMOYA (JP)
Application Number:
PCT/JP2021/036645
Publication Date:
April 21, 2022
Filing Date:
October 04, 2021
Export Citation:
Assignee:
YASUNAGA KK (JP)
International Classes:
F16C7/02; G01B11/02; G01N21/88
Foreign References:
| JP2012206214A | 2012-10-25 | |||
| JP2006133188A | 2006-05-25 | |||
| JP2006133187A | 2006-05-25 | |||
| US20040250652A1 | 2004-12-16 | |||
| CN102967265A | 2013-03-13 | |||
| EP2711664A1 | 2014-03-26 |
Other References:
SOLECKI L: "METHODS OF SURFACES QUALITY COMPARISON IN MECHANICAL ENGINEERING APPLICATIONS", HUNGARIAN JOURNAL OF INDUSTRIAL CHEMISTRY VESZPRÉM, vol. 39, no. 1, 1 January 2011 (2011-01-01), pages 31 - 34, XP055921119, DOI: 10.1515/378
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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