Selective EDM Immersion for Faster Workpiece Cleaning
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Solution Overview
Problem
The existing electrical discharge machining methods require extensive time and cost for cleaning the workpiece due to the immersion of the entire workpiece in machining liquid, and additional processes like grinding and polishing are inaccurate and time-consuming.
Innovation Solution
The method involves selectively immersing only the portion of the workpiece requiring machining in the electrical discharge machining liquid, allowing precise application of voltage between the electrode and the workpiece, and using a feed unit to position the workpiece for efficient machining, thereby reducing cleaning time and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the entire workpiece is immersed in the electrical discharge machining liquid, then the electrical discharge machining can be performed on the workpiece, but it takes a lot of time and cost to clean up the workpiece after the electrical discharge machining
Solution Approach 1:
The patent applies segmentation by dividing the workpiece into multiple portions and selectively immersing only the specific portion requiring machining in the electrical discharge machining liquid. This allows the machining process to be performed on the target area while keeping other portions exposed, thereby reducing cleaning time and cost after machining.
2Manufacturing precision
If the entire workpiece is immersed in the electrical discharge machining liquid, then the electrical discharge machining can be performed on the workpiece, but it increases the cost of the cleaning process
Solution Approach 1:
The patent applies segmentation by dividing the workpiece into multiple portions and selectively immersing only the specific portion requiring machining in the electrical discharge machining liquid. This allows the machining process to be performed on the target area while keeping other portions exposed, thereby reducing cleaning time and cost after machining.
3Productivity
If a grinding device or polishing device is used for machining the workpiece, then the workpiece can be processed, but processing accuracy is likely to be low and a large amount of work time is required
Solution Approach 1:
The patent replaces the mechanical grinding and polishing systems with an electrical discharge machining system. This substitution eliminates the need for mechanical contact between the grinding tool and workpiece, thereby achieving higher processing accuracy while improving productivity by reducing the need for multiple sequential operations and post-processing curing.
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 significantly reduces the time and cost associated with cleaning the workpiece post-machining by limiting the liquid immersion to the necessary area, improving processing accuracy and eliminating the need for post-machining curing operations.
Implementation Method 1
applying an electrical discharge machining to the machining object portion by applying a voltage between the electrode and the workpiece in a state where the portion of the workpiece is selectively immersed in the electrical discharge machining liquid
Data Source
AI summary
An electrical discharge machining method includes selectively immersing only a portion of a workpiece in an electrical discharge machining liquid such that a machining object portion included in the portion of the workpiece is opposed to an electrode immersed in the electrical discharge machining liquid and applying an electrical discharge machining to the machining object portion by applying a voltage between the electrode and the workpiece in a state where the portion of the workpiece is selectively immersed in the electrical discharge machining liquid.