Title:
PISTON MANUFACTURING METHOD, PISTON PINHOLE MEASUREMENT METHOD, AND PISTON
Document Type and Number:
WIPO Patent Application WO/2018/131443
Kind Code:
A1
Abstract:
Provided is a piston manufacturing method including: a formation step for forming a reference surface on a crown surface of a piston; a processing step for processing a piston pinhole in a set position, with the reference surface as a positional reference in the piston axial direction; a measurement step for measuring a compression height, which is a distance from the piston pinhole to the reference surface; and an evaluation step for evaluating the piston axial direction position of the piston pinhole on the basis of the difference between the measured compression height and a distance reference value.
Inventors:
TANIGUCHI ATSUSHI (JP)
MARUYAMA SHIGENOBU (JP)
MIYATA KAZUSHI (JP)
TAKAHASHI NORIKAZU (JP)
SASAKI MASATO (JP)
MARUYAMA SHIGENOBU (JP)
MIYATA KAZUSHI (JP)
TAKAHASHI NORIKAZU (JP)
SASAKI MASATO (JP)
Application Number:
PCT/JP2017/046306
Publication Date:
July 19, 2018
Filing Date:
December 25, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
B23P15/10; F02F3/00; F16J1/18; G01B11/02
Foreign References:
| JP2016515672A | 2016-05-30 | |||
| JP2011046974A | 2011-03-10 | |||
| JPH11285924A | 1999-10-19 | |||
| JP2003524111A | 2003-08-12 | |||
| JPH08247724A | 1996-09-27 |
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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