FORGING TOOL - NGK INSULATORS LTD

Title:

FORGING TOOL

Document Type and Number:

WIPO Patent Application WO/2019/189613

Kind Code:

A1

Abstract:

This forging tool 10 is a forging tool which forges a workpiece W in a rectangular-shaped forging space S having first to sixth wall surfaces 21-26. The forging tool 10 is provided with: a first mold 30 which defines the first wall surface 21 and the second wall surface 22 that is adjacent to the first wall surface 21; a second mold 40 which defines the third wall surface 23 and the fourth wall surface 24 that is adjacent to the third wall surface 23; and a third mold 60 which defines the sixth wall surface 26 in an area surrounded by a contact surface 61 when the bottom surfaces 32, 42 of the first mold 30 and the second mold 40 contact the contact surface 61. The first mold 30 defines a triangular area 25a in which a line at which the fifth wall surface 25 intersects the first wall surface 21 and a line at which the fifth wall surface 25 intersects the second wall surface 22 are two edges thereof, the second mold 49 defines a triangular area 25b in which a line at which the fifth wall surface 25 intersects the third wall surface 23 and a line at which the fifth wall surface 25 intersects the fourth wall surface 24 are two edges thereof, and the workpiece W is pressed between the fifth wall surface 25 and the sixth wall surface 26.

Inventors:

MIURA HIROMI (JP)
MURAMATSU NAOKUNI (JP)
KAWAMOTO TADAHIRO (JP)

Application Number:

PCT/JP2019/013686

Publication Date:

October 03, 2019

Filing Date:

March 28, 2019

Export Citation:

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Assignee:

NGK INSULATORS LTD (JP)
MIURA HIROMI (JP)

International Classes:

B21J1/02; B21J13/02

Domestic Patent References:

WO2009119237A1	2009-10-01
WO2013146309A1	2013-10-03

Foreign References:

US20170342537A1	2017-11-30
JP2006116592A	2006-05-11
JPS6422435A	1989-01-25
JP2006116592A	2006-05-11
JP2018062494A	2018-04-19

Other References: