Segmented EDM Cutting with Adjustable Parameters for Thick Sections
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Solution Overview
Problem
Conventional electrical discharge machining (EDM) technology experiences slow cutting speed due to large cutting thickness, resulting in long total cutting time.
Innovation Solution
An EDM apparatus and method with adjustable machining parameters, allowing for segmented cutting by adjusting parameters such as orientation, discharge electrical, deslagging, and movement/tension parameters in response to changing thickness, enabling faster cutting speeds by altering the cutting direction and thickness in subsequent steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional electrical discharge machining is used with large cutting thickness, then the machining capability is sufficient for thick workpieces, but the cutting speed is slow resulting in long total cutting time
Solution Approach 1:
The patent divides the cutting process into multiple segments by adjusting machining parameters when the to-be-cut thickness reaches a predetermined value. The cutting direction is changed to cut remaining portions with smaller thickness, thereby increasing cutting speed and reducing total cutting time while maintaining the ability to process thick workpieces
2Productivity
If the cutting thickness is reduced to increase cutting speed, then the productivity improves, but the device complexity increases due to the need for parameter adjustment mechanisms
Solution Approach 1:
The patent employs a feedback mechanism where the machining parameters are correspondingly adjusted when a specified parameter of the to-be-machined object changes to a predetermined value. This automated feedback control enables dynamic parameter adjustment without significantly increasing device complexity, allowing the system to maintain high cutting speed while processing varying thicknesses
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
The segmented cutting approach significantly reduces total cutting time by allowing immediate adjustments in feeding direction when thickness exceeds set values, dividing large thicknesses into smaller sections for faster processing.
Implementation Method 1
electrical discharge machining (EDM) unit for cutting the machining target area of the to-be-machined object along a first cutting direction by at least one discharge electrode of the electrical discharge machining (EDM) unit
Implementation Method 2
A dielectric material separates two electrodes and a voltage is applied to generate rapidly recurring current discharges between the two electrodes to machine the to-be-machined object
Data Source
AI summary
An electrical discharge machining apparatus and an electrical discharge machining method with adjustable machining parameters comprise a carrier and an electrical discharge machining (EDM) unit. The carrier is used for placing a to-be-machined object defined with a machining target area. A discharge electrode of the electrical discharge machining (EDM) unit is used to cut the machining target area of the to-be-machined object along a first cutting direction with at least one machining parameter, the machining parameter is correspondingly adjusted when a specified parameter of the to-be-machined object changes to a first numerical value, thereby using the adjusted machining parameter to perform a second cutting step on the machining target area of the to-be-machined object. A segmented cutting technology for solving a problem that a cutting speed (mm2/min) is slowed down and a total cutting time is prolonged due to changes of the specified parameter of electrical discharge machining cutting.