Impeller Vane Electrochemical Machining With Parallel Electrodes
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Solution Overview
Problem
Existing electrochemical machining apparatuses for impellers are time-consuming and prone to precision variations when forming multiple vanes individually.
Innovation Solution
An electrochemical machining apparatus with a rotary shaft and electric discharge electrodes disposed at equal intervals, allowing simultaneous machining of multiple vanes with nozzles for uniform electrolyte distribution, and adjustable positioning for precise contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If vanes are machined one by one using a single electrode, then machining precision can be maintained, but the machining time increases significantly
Solution Approach 1:
The single electrode is segmented into multiple electrodes arranged circumferentially around the rotary shaft. Each electrode corresponds to one vane position, allowing simultaneous machining of multiple vanes while maintaining the precision of individual electrode machining through standardized electrode design and positioning
Solution Approach 2:
The machining system transitions from a single-point sequential approach to a multi-point parallel approach by arranging electrodes in the circumferential dimension. The rotary shaft enables the workpiece to pass through multiple electrode positions sequentially, achieving parallel machining of multiple vanes without compromising individual machining quality
2Productivity
If multiple electrodes are used to machine multiple vanes simultaneously, then machining time is reduced, but precision variation between vanes increases
Solution Approach 1:
All electrodes are designed with identical structures and dimensions, making them universally interchangeable. This standardization ensures that each electrode performs the same machining function with consistent parameters, eliminating precision variation between vanes while enabling simultaneous machining of multiple vanes
Solution Approach 2:
The electrodes are pre-positioned at equal intervals around the rotary shaft before machining begins. This preliminary arrangement ensures that each vane encounters identical machining conditions, guaranteeing consistent precision across all vanes while maintaining high productivity through parallel processing
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
Enables high-precision machining of impellers in a reduced timeframe by allowing simultaneous processing of multiple vanes with improved precision and reduced positional variations.
Implementation Method 1
electrochemical machining apparatus that electrochemically machines an impeller
Implementation Method 2
The plurality of nozzles each have a discharge port to discharge an electrolytic solution between the electrode surface and the surface to be machined
Data Source
AI summary
Electric discharge electrodes are disposed at equal intervals along a circumference about a rotary shaft, and provided so as to be capable of being brought into and out of contact with vanes such that one electric discharge electrode corresponds to one vane. The electric discharge electrodes each have an electrode surface along a surface to be machined of a corresponding one of the vanes. After the electric discharge electrodes each move radially inward toward the rotary shaft, the rotary shaft rotates and electrochemical machining is thus performed while the electrode surface and the surface to be machined are close to and thus face each other.