Wire EDM Power Conductor Repositioning in the Lower Guide

Solution Overview

Problem

The process of manually changing the position of the power conductor in wire electric discharge machining is cumbersome and inefficient, often obstructed by surrounding components, particularly in the lower guide device, leading to operator burden and reduced machining efficiency.

Innovation Solution

A wire electric discharge machining apparatus with a fixing device that allows the power conductor to switch between fixed and non-fixed states, facilitated by a pressing device and movement device, enabling mechanical adjustment of the power conductor's position without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual adjustment of power conductor position is used, then the power conductor can be repositioned, but operator burden increases and work time increases

Engineering Contradiction:

Improveease of power conductor adjustmentVSAvoidwork time for power conductor adjustment

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The system enables automatic self-adjustment of the power conductor position through the control unit that receives sensor signals and actuates the positioning mechanism without operator intervention, allowing the apparatus to service itself during operation

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical adjustment with an automated control system that uses sensors to detect wire electrode position and actuates a positioning mechanism (such as a motor-driven device) to automatically reposition the power conductor, substituting human mechanical operation with automated electromechanical control

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If manual adjustment of power conductor position is used, then the power conductor can be repositioned, but surrounding components become obstacles

Engineering Contradiction:

Improveadaptability of power conductor positioningVSAvoidease of power conductor adjustment

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent introduces a sensor as an intermediary that detects the position of the wire electrode and transmits this information to the control unit, which then actuates the positioning mechanism, serving as a mediator between the physical wire position and the automated adjustment system

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces manual mechanical adjustment with an automated control system that uses sensors to detect wire electrode position and actuates a positioning mechanism (such as a motor-driven device) to automatically reposition the power conductor, substituting human mechanical operation with automated electromechanical control

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Duration of action of stationary object

If power conductor is not replaced but repositioned, then service life is extended, but adjustment complexity increases

Engineering Contradiction:

Improveservice life of power conductorVSAvoidcomplexity of power conductor adjustment mechanism

Core Design Contradiction:

Duration of action of stationary objectVSDevice complexity

Solution Approach 1:

The patent implements a dynamic positioning system where the power conductor can be automatically repositioned along the wire electrode path based on sensor feedback and control unit commands, allowing flexible adaptation to wire wear without manual intervention

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system enables automatic self-adjustment of the power conductor position through the control unit that receives sensor signals and actuates the positioning mechanism without operator intervention, allowing the apparatus to service itself during operation

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12594615B2Wire electric discharge machining apparatus

Publication Date: 2026.04.07 SODICK CO LTD

AI summary

A wire electric discharge machining apparatus includes a wire electrode and upper and lower guide devices guiding the wire electrode, and includes: a power conductor moving in a first direction as a horizontal axis direction and supplying power by contacting the wire electrode; and a fixing device fixing the power conductor in the lower guide device and switchable between a fixed state, in which a movement of the power conductor relative to the lower guide device in a second direction as another horizontal axis direction orthogonal to the first direction is not possible, and a non-fixed state in which such relative movement is possible. The wire electric discharge machining apparatus includes: a pressing device, movable relative to the lower guide device and pressing the power conductor in the non-fixed state to move in the second direction; and a movement device, moving the pressing device relative to the lower guide device.