METHOD FOR MANUFACTURING SPARK PLUG

Title:

METHOD FOR MANUFACTURING SPARK PLUG

Document Type and Number:

WIPO Patent Application WO/2015/107884

Kind Code:

A1

Abstract:

The present invention brings the movement distance of a swaging jig in a swaging press step closer to a predetermined target movement distance. The swaging press step includes (1) a step for causing the load of the swaging jig to reach a set contact load by moving the swaging jig forward in contact with a part to be swaged, and (2) a buckling step for moving the swaging jig further forward over a set distance and thereafter stopping the swaging jig. On the basis of a first overshoot amount in the step (1) and/or a second overshoot amount in the step (2), the set contact load and/or the set distance is adjusted to thereby reduce a difference between the target movement distance and an actual movement distance of the swaging jig.

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Inventors:

KAWAI TOMOKI (JP)

Application Number:

PCT/JP2015/000096

Publication Date:

July 23, 2015

Filing Date:

January 13, 2015

Export Citation:

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Assignee:

NGK SPARK PLUG CO (JP)

International Classes:

H01T21/02

Foreign References:

JP2010212230A	2010-09-24
JP2013101805A	2013-05-23

Other References: