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Multi-wire EDM Slicing Method
Multi-wire EDM Slicing Method
Multi-wire EDM Slicing Method
• Experimental Procedures • 1. tension of these wire electrodes was varied to obtain the same
• The track-shaped section wire electrode with aspect ratio of 1:2.0 • showed similar tendency of vibration amplitude in one side under • the every wire running speed condition, and it could achieve stable • wire running up to 300 m/min
Fig. 5 Vibration amplitude of wire electrode with track-shaped section for various wire running speeds
Multi-wire EDM Slicing Method
• Experimental Results
stress for various cross sections
• 2. The height direction of wire electrode was arranged in parallel to the machining direction
• 3. observed The vibration of wire electrode by a high speed shutter camera
Multi-wire EDM Slicing Method
Chen yu long School of Mechanical and Precision instrument
Engineering
Multi-wire EDM Slicing Method
• Introduction • the silicon carbide is attracted as a material of next-generation • semiconductor. Thus, it is necessary to slice these materials high • efficiently. A multi-wire saw method is conventionally applied to • slicing of these ingots, However, this method has some problems • such as large cracks on sliced surface and large kerf loss due to the • mechanical contact removal
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Multi-wire EDM Slicing Method
Multi-wire EDM Slicing Method
Multi-wire EDM Slicing Method
Fig3. Example of wire movement observation
Multi-wire EDM Slicing Method
• Figure 3 shows observation results of non-vibrated and vibrated wire • electrode. The base is the original width dw of wire electrode with • track-shaped section, and dm is the width of tilted and moved wire • electrode. The vibration amplitude AW in one side of wire electrode • was calculated by the equation:
•
Multi-wire EDM Slicing Method
Fig. 4 Vibration amplitude of wire electrode with track-shaped section for various aspect ratios
Multi-wire EDM Slicing Method