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Example of direct carbide milling with PCD end mill

Example of direct carbide milling with PCD end mill
↑ The round curved surface becomes a shiny mirror surface.

Example of direct carbide milling with PCD end mill

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A special polycrystalline diamond (PCD) with high abrasion resistance is used as the base material for the tip. This was subjected to electrolytic abrasive grain polishing, a patented, special cutting edge processing technology developed jointly between Kyowa and the Akita Industrial Technology Center, successfully providing a smooth cutting edge.

The result is the successful development of end mills suited for carbide machining from semi-finishing to final finishing.

Test machining environment
Machine UVM-450C
Work material Carbide V70 or equivalent
Cutting fluid Water-soluble cutting oil
Tools used Two PCD ball end mills (DCBE-2), R 0.5, manufactured by Kyowa (used for roughing and finishing)
Machining description
Machining shape R 1.5×0.8 mm deep
Rotational frequency 60,000rpm
Feed speed Roughing:200mm/min Finishing:100mm/min
Cutting (axial/radial) Roughing:0.01mm Finishing:0.001mm
Machining time Roughing:60min Finishing:30min
Roughness of machining surface Ra:0.08μm

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