The impact of tool life was "hump-shaped"

Tool geometry parameters on the tool life of:Durability of the rake angle of the tool is clear, and too large, the blade reduces the strength, heat is poor, and easily damaged; if too small and the cutting force and the cutting temperature is increased too much, the durability of both cases are  polycrystalline diamond  rake angle influence on tool life was "hump-shaped", which is the highest peak of the anterior horn durability. Main angle decreases,  Polycrystalline diamond  strength,  Diamond blade  heat dissipation, durability increased. Furthermore appropriately reduced and vice angle increases the tool nose radius can increase strength and improve heat dissipation, so that tool life increased. Tool geometry parameters on the tool life have a more significant impact, is reasonable and advanced tool geometry is one important indicator of whether or not.