Wire EDM Cell Layout for Core-Supported Machining Flow
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Solution Overview
Problem
Existing wire electrical discharge machining systems require robots to operate for extended periods to collect processed workpieces, leading to inefficiencies as cores often fall into the workpiece reservoir during machining.
Innovation Solution
A wire electrical discharge machining system that includes multiple devices and a core processing apparatus, allowing for efficient core support and collection through distinct operations, where cores are either bonded or supported via pre-machining remaining portions, enabling the robot to focus on workpiece mounting and collection without core retrieval from the reservoir.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a robot collects processed articles from the workpiece reservoir, then the workpiece collection function is achieved, but the robot operation time becomes excessively long
Solution Approach 1:
The system divides the collection task into two segments: the robot collects workpieces with attached cores from the machining device, while a separate core collecting unit removes cores from the workpiece reservoir. This segmentation allows the robot to complete its cycle faster while core removal happens independently.
Solution Approach 2:
The workpiece reservoir serves as an intermediary zone where workpieces are temporarily deposited after machining. The core collecting unit operates independently in this zone to remove cores, allowing the robot to proceed with workpiece collection without waiting for core removal.
2Productivity
If cores are removed from the workpiece reservoir, then core collection is achieved, but the robot must perform both workpiece and core collection increasing operation complexity
Solution Approach 1:
The system separates workpiece collection and core collection into independent operational streams. The robot handles only workpiece collection while the core collecting unit independently manages core removal, reducing robot program complexity and operation time.
Solution Approach 2:
The core collecting unit autonomously performs core removal operations without requiring robot intervention. This self-service capability allows the system to handle core collection independently, simplifying the robot's task to workpiece collection only.
3Manufacturing precision
If cores are supported during electrical discharge machining, then machining precision is maintained, but cores may fall into the workpiece reservoir
Solution Approach 1:
The core collecting unit acts as an intermediary mechanism that monitors and removes cores from the workpiece reservoir. This prevents cores from contaminating the machining area while maintaining the support structure needed for precision machining.
Solution Approach 2:
The system replaces passive core support (relying on workpiece geometry alone) with an active core collecting mechanism that uses suction or mechanical retrieval to secure cores, preventing them from falling into the reservoir while maintaining machining precision.
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 configuration prevents cores from falling into the reservoir, reducing the robot's collection burden and enhancing overall machining efficiency by allowing the core processing apparatus to handle core removal and collection, thereby improving operational efficiency and stability during wire electrical discharge machining.
Implementation Method 1
a first electrical discharge machining unit configured to perform electrical discharge machining of a workpiece in a state in which a core is supported
Implementation Method 2
a core collecting unit configured to remove and collect the core supported by the workpiece by means of the first operation
Implementation Method 3
the robot unit collects the workpiece with the core supported by means of the second operation from the second wire electrical discharge machining device, and mounts the workpiece on the core processing apparatus
Implementation Method 4
the core processing apparatus removes and collects the core thus supported by the workpiece by means of the second operation
Data Source
AI summary
A wire electrical discharge machining system allows a wire electrical discharge machining device and a robot to operate in conjunction with each other with high efficiency. A wire electrical discharge machining system 1 includes wire electrical discharge machining devices 7, 11, and 15, and a robot unit 17 that mounts a workpiece on the wire electrical discharge machining device. The wire electrical discharge machining devices 7, 11, and 15 may each perform either rough machining with supported cores or finishing machining after the cores are removed. Subsequently, core processing may be performed by a corresponding dedicated apparatus. Also, the core processing may be performed by a single common apparatus. The robot unit 17 mounts and collects the workpiece so as to allow these wire electrical discharge machining apparatuses to effectively operate, thereby providing wire electrical discharge machining with improved efficiency for the overall system.