Wire electrical discharge machining method and wire electrical discharge machining apparatus

A two-step wire electrical discharge machining method with center-first processing and decision-based trajectories addresses precision issues in narrow sections, achieving uniform machining and error-free results.

JP7864274B1Active Publication Date: 2026-05-22MITSUBISHI ELECTRIC CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
MITSUBISHI ELECTRIC CORP
Filing Date
2025-08-04
Publication Date
2026-05-22

AI Technical Summary

Technical Problem

Existing wire electrical discharge machining methods fail to perform high-precision enlargement machining in narrow-width parts without causing machining errors.

Method used

The method involves a two-step process: first machining the center of the narrow portion using a first machining trajectory, followed by enlargement machining using a second trajectory, with decision-making based on processing shape to determine the necessity of the first processing step.

Benefits of technology

Enables high-precision enlargement machining in narrow sections without machining errors by ensuring uniform machining appearance and amount between forward and return passes.

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Patent Text Reader

Abstract

A wire electrical discharge machining method for forming a machined shape having a narrow portion (22) by performing enlargement machining on a workpiece (W) with a wire electrode (5) comprises: a first step of performing a first machining operation to machine the center of the narrow portion (22) using a first machining trajectory (Q1) before performing the enlargement machining; and a second step of performing enlargement machining on the portion of the machined shape excluding the center using a second machining trajectory (Q2) after performing the first machining operation.
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Citation Information

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