Shaft fabricated with commercial cutting tool

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Presentation transcript:

Shaft fabricated with commercial cutting tool Micro Turning Turning of micro-shafts below 50µm is difficult due to radial direction of cutting force. Radial direction causes damage to the workpiece. Radial direction is brought about by larger tool nose radius. Commercial Cutting Tool Shaft fabricated with commercial cutting tool

Micro Turning If the tool nose is replaced by a sharp tool tip, radial cutting force can be reduced and micro turning will allow for fabrication of smaller micro shafts.

Fabrication Sharp Tool Using Hybrid Processes PCD Tool can be modified in-situ using EDM/EDG process. Sharp tool tip with less than 5µm tool nose can be fabricated. a) Commercial PCD Tool b) Modified PCD Tool (a) EDG Process (b) After EDG

Use of Ultra Sharp Tool A Hair on the Left and a 19µm Graphite Shaft on the Right (Same Magnification and Same Image Size for Comparison)

Fabricating Tiny Holes with Micro-turned Electrode 6.5µm hole machined on 50µm stainless steel plate, probably the world’s smallest hole with highest aspect ratio