Electrode Array ECM for Submicron Feature Machining
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Solution Overview
Problem
Conventional electrochemical machining (ECM) lacks the ability to produce components with precise geometric fidelity and submicron features due to limitations in tool electrode design and electrolyte flushing, making it difficult to machine components with complex geometries and closely spaced features.
Innovation Solution
The use of an array of individual electrodes with unique applied potentials and controlled electrolyte flushing to generate multiple electric fields, allowing for precise control of the oxidation rate at strategic locations on the workpiece, enabling the production of components with submicron features and complex geometries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional ECM with single tool electrode is used, then the process is simple and easy to operate, but the geometric fidelity and ability to produce submicron features is insufficient
Solution Approach 1:
The tool electrode is segmented into an array of multiple individual electrodes (e.g., 10-100 micrometers in size) arranged in specific patterns. Each electrode can be independently controlled, allowing precise manipulation of electric fields to achieve submicron features and complex geometries that cannot be produced with a single conventional electrode.
Solution Approach 2:
The system dynamically adjusts the potential applied to each individual electrode in the array during the machining process. This dynamic control allows the oxidation rate to be precisely modulated at different locations on the workpiece, enabling the production of complex geometries and maintaining geometric fidelity throughout the machining process.
2Manufacturing precision
If traditional electrolyte flushing is used, then the system is simple, but the flushing capability is insufficient for complex geometries with closely spaced features
Solution Approach 1:
The electrolyte flushing system is segmented with individual flushing channels and ports corresponding to different regions of the workpiece. This segmented approach allows targeted electrolyte delivery to closely spaced features and complex geometries, ensuring adequate flushing capability where traditional single-channel systems fail.
Solution Approach 2:
The patent introduces intermediary electrolyte flushing channels that mediate between the electrolyte supply and the workpiece surface. These channels are strategically positioned to deliver electrolyte directly to difficult-to-reach areas, ensuring proper flushing of oxidized material from closely spaced features while maintaining system manageability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the capability to produce components with high fidelity and submicron features, overcoming the limitations of traditional ECM by providing precise geometric control and improved surface finish, suitable for components with complex geometries and small dimensions.
Implementation Method 1
the electrically conductive material is oxidized from the workpiece using an applied potential, allowing a current to flow at a controlled rate
Implementation Method 2
ECM is a process of removing electrically conductive material, such as metallic materials, by an electrochemical process
Implementation Method 3
The electrolyte, usually a salt solution in water, flows through the gap, flushing away the oxidized material from the workpiece
Data Source
AI summary
Methods and systems of electrochemically machining a component are provided. The method may include applying two or more potentials to a tool electrode comprising an array of two or more individual electrodes to generate two or more electric fields in between the tool electrode and a workpiece opposite of the tool electrode, wherein each of the two or more electric fields is generated by one of the array of two or more individual electrodes.