Example of direct carbide milling with PCD end mill
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 |
