US 10,376,976 B2 · Electrode for electrical discharge machining and method for manufacturing honeycomb structure forming die

Abstract

An electrode for electrical discharge machining which makes it possible to form slits of a honeycomb structure forming die so that a slit width on a front surface side is smaller than a slit width on a back hole side is provided. The electrode for electrical discharge machining includes: plural plate-shaped discharge portions with a thickness that is gradually increased toward tips thereof; and a plate-shaped support portion to which end portions of the plural discharge portions on a side opposite to the tips are connected, wherein a difference between a thickness of the tip; and a thickness of the end portion on the side opposite to the tip ranges from 5 μm to 500 μm in the discharge portion.

Claims13

Dependent claims

An electrode for electrical discharge machining for manufacturing a honeycomb structure forming die, comprising:

plural plate discharge portions having a linear increasing thickness that continuously extends from end portions at one end of the plural plate discharge portions to tips at another end of the plural plate discharge portions, such that the thickness of the end portions is less than the thickness of the outermost exposed edge of the tips of the plural plate discharge portions, which are parallel with each other;
and
a plate support portion to which the end portions of the plural plate discharge portions on a side opposite to the tips are connected, wherein the plural plate discharge portions and the plate support portion are formed integrally.

Dependencies are inferred from the claim text.

Facts

Application

14/921,246Filed 23 Oct 2015 · continuation

Priority

JP 2014-06821628 Mar 2014

Published

US 2016/0039026 A111 Feb 2016

Granted

13 Aug 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

B23H 1/04
Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a…
B23H 9/00
Machining specially adapted for treating particular metal objects or for obtaining special
B23H 2200/30
Specific machining processes or workpieces: for making honeycomb structures
B28B 3/269
Extrusion dies: for multi-channeled structures, e.g. honeycomb structures

Electrode for electrical discharge machining and method for manufacturing honeycomb structure forming die

Life of this patent

Electrode for electrical discharge machining and method for manufacturing honeycomb structure forming die

Life of this patent

Abstract

Claims13