Title:
MANUFACTURING METHOD OF DIFFERENTIAL DEVICE, AND DIFFERENTIAL DEVICE
Document Type and Number:
Japanese Patent JP2018025209
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a differential device, and the differential device capable of suppressing cracking of a differential case caused by excessive heat input by overlapping in welding.SOLUTION: A manufacturing method of a differential device includes: a first process for casting a differential case by pouring molten cast iron into a casting mold having a mark formation portion having a specific positional relationship to a sprue on a mold surface, through the sprue; and a second process for fitting the differential case to a ring gear and welding the differential case and the ring gear over the whole periphery around a prescribed axis. In the process 2, the differential case and the ring gear are welded so that overlapping of welding is not caused on a part formed near the sprue of the casting mold in the differential case by utilizing a mark formed on the differential case by the mark formation portion in the first process.SELECTED DRAWING: Figure 4
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Inventors:
SHIRAKAWA YUSUKE
Application Number:
JP2016155639A
Publication Date:
February 15, 2018
Filing Date:
August 08, 2016
Export Citation:
Assignee:
SUBARU CORP
International Classes:
F16H48/40; B22C9/06; B22C9/28; B23K15/00; B23K26/21; F16H48/38
Domestic Patent References:
| JP2016065582A | 2016-04-28 |
Foreign References:
| WO2013018223A1 | 2013-02-07 |
Attorney, Agent or Firm:
Miaki Kametani
Tetsuo Kanamoto
Koji Hagiwara
Kazuki Matsumoto
Tetsuo Kanamoto
Koji Hagiwara
Kazuki Matsumoto