Electrochemical Electrode for Metal Corner Chamfering
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Solution Overview
Problem
Current manual methods for corner breaking on metal parts, such as those in aeronautics, are time-consuming, prone to defects, and lack repeatability, with inadequate control over the angle breakage process, leading to potential injuries and collateral damage.
Innovation Solution
An electrode with a conductive zone shaped complementary to the angle break, positioned between insulating parts for precise electrochemical machining, supported by a gantry for automated positioning and non-destructive testing, ensuring consistent and efficient corner breaking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual angle breaking operations are performed by milling, grinding, or brushing, then the edges can be machined to remove burrs, but the operations are time-consuming and prone to defects such as scratches and localized overheating
Solution Approach 1:
The patent replaces manual mechanical angle breaking operations (milling, grinding, brushing) with electrochemical machining. This substitution eliminates mechanical contact between tools and the workpiece, thereby preventing mechanical defects such as scratches and localized overheating while significantly reducing operation time.
Solution Approach 2:
The invention changes the fundamental parameter of the machining process from mechanical force to electrochemical reaction. By controlling electrical parameters (current density, electrolyte composition, voltage) rather than mechanical parameters (tool speed, feed rate, pressure), the process achieves both high precision and high productivity simultaneously.
2Adaptability or versatility
If manual angle breaking is performed by different operators, then various edges can be machined, but good repeatability of the machining cannot be guaranteed
Solution Approach 1:
The electrode is designed with a shape complementary to the desired angle break profile. This self-forming capability allows the electrode geometry itself to define the machining outcome, eliminating variability introduced by different operators while maintaining the ability to machine various edge configurations by simply changing the electrode shape.
Solution Approach 2:
The electrode is pre-shaped with the complementary geometry of the desired angle break before the machining operation. This preliminary preparation of the tool geometry ensures that the same precise profile is reproduced on every workpiece, guaranteeing repeatability across different operations and operators.
3Measurement precision
If hardenable paste is applied to control angle breakage, then the profile can be inspected by lighting and magnification, but the control process is time-consuming and unreliable
Solution Approach 1:
The patent replaces the manual inspection method using hardenable paste, lighting, and magnification with electrochemical machining that inherently produces precise and controllable angle breaks. The electrochemical process provides built-in precision through controlled material removal, eliminating the need for separate inspection steps and reducing overall time.
4Ease of manufacture
If manual machining is used to break angles, then edges can be processed, but collateral damage such as tool blows and localized overheating occurs on the part
Solution Approach 1:
The invention replaces mechanical machining tools with an electrochemical machining system. This substitution eliminates direct mechanical contact between tools and the workpiece, thereby preventing tool blows, impact damage, and localized overheating that are inherent in mechanical machining processes.
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 solution enables rapid, defect-free, and reproducible corner breaking with reduced risk of collateral damage, allowing for precise control and significant time savings in the machining and inspection process.
Implementation Method 1
an electrode for corner breaking of a metal part by electrochemical machining
Data Source
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Figure 3~5
AI summary
The invention relates to an electrode for chamfering the corners of a workpiece by electrochemical machining, comprising at least one conductive region (62, 68) to be arranged facing a workpiece corner to be chamfered. Said electrode is characterized in that the conducting region (62, 68) has a shape complementary to that of the chamfered corner to be produced, and is arranged between a first part forming an insulating excessive thickness, and an insulating second part for positioning the conducting region such that it faces the corner to be chamfered.