Blisk Electrochemical Machining with Multi-Channel Electrolyte Flow
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Solution Overview
Problem
In electrochemical machining of blisks, the design of multi-electrode synchronous feed devices faces challenges with electrolyte flow field complexity and electrolyte deficient areas, particularly at the outer edge of the blisk workpiece, which affects machining efficiency and accuracy.
Innovation Solution
A multi-channel electrochemical machining device and method that includes an electrolytic bath with a drainage seam and an outer ring rotating mechanism to ensure continuous electrolyte supply and prevent electrolyte deficient areas, allowing for synchronized movement of multiple tube electrodes and efficient machining of cascade channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple tube electrodes are used for simultaneous machining, then machining efficiency is improved, but electrolyte flow field complexity increases and electrolyte deficient areas occur
Solution Approach 1:
The electrolyte supply system is segmented into multiple independent channels, each serving specific tube electrodes. The electrolyte inlet is divided into first and second inlets, with corresponding first and second electrolyte outlets on the guide plate, allowing separate control and optimization of electrolyte flow to different electrode groups, thereby reducing overall system complexity while maintaining multi-electrode operation
Solution Approach 2:
A guide plate is introduced as an intermediary component between the electrolyte inlet and tube electrodes. The guide plate distributes electrolyte through multiple outlets to different electrodes, acting as a flow mediator that simplifies the complex multi-electrode electrolyte supply problem into a more manageable single-point inlet system with controlled distribution
2Productivity
If multiple tube electrodes move in three-dimensional space, then multi-channel machining is achieved, but electrolyte deficient areas form at the outer edge of the blisk
Solution Approach 1:
Different regions of the electrolyte distribution system are given different properties. The guide plate has electrolyte outlets positioned at specific locations to address local electrolyte deficiency at the outer edge of the blisk. The electrolyte flow is optimized locally at each outlet position rather than using a uniform distribution approach, ensuring adequate electrolyte supply to all electrode regions
Solution Approach 2:
The electrolyte distribution approach transitions from a single-dimension linear supply to a two-dimensional planar distribution through the guide plate. Multiple electrolyte outlets are arranged in specific spatial patterns on the guide plate to cover the entire machining area, including the outer edge regions, thereby eliminating electrolyte deficient areas through dimensional expansion of the supply network
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 effectively reduces the occurrence of electrolyte deficient areas, enhances machining efficiency by enabling simultaneous machining of multiple channels, and ensures a stable electrolysis process by maintaining a consistent electrolyte flow, improving the overall precision and speed of blisk manufacturing.
Implementation Method 1
Electrochemical machining is a special process method for reducing metal materials by using the principle of electrochemical anodic dissolution
Data Source
AI summary
Disclosed are a multi-channel electrochemical machining device and method for a blisk, and relate to the technical field of blisk electrochemical machining. The multi-channel electrochemical machining device for a blisk comprises an electrolytic bath used for accommodating an electrolyte, a blisk workpiece, a tube electrode and a top cover plate. The top cover plate is located above the blisk workpiece. An electrolysis chamber used for the tube electrode to electrolyze the blisk workpiece is formed between the lower surface of the top cover plate and the surface of the blisk workpiece. The electrolysis chamber communicates with the electrolytic bath. A drainage seam communicating the electrolysis chamber and the electrolytic bath along the axial direction of the blisk workpiece is formed in the upper surface of the top cover plate.