Why is the tip of the blade of a hard alloy lathe smaller than a high speed steel tool
I think the reason for the small arc is 1. Add location 2. Fast cut 3. Reduce the head friction and improve life 4. The rows are turned on the axial force, smoother
Cemented carbide tool working temperature is higher than that of high speed steel hardness, strength is higher, but the brittleness is also increased Arc radius choose smaller than HSS tool Why also has to prevent brittle fracture
In the case of the circular curved edge, the radius of the tip arc of the blade can improve the durability of the tool and reduce the residual area of the machining surface. But increasing the radius of the tip arc, the radial cutting force also increases, causing the cutting vibration when the system stiffness is inadequate. Tungsten carbide belongs to brittle material, cutting vibration will result in tool breakage, so for cemented carbide cutting tool, to reduce the radial cutting force and cutting vibration, avoid its tip arc selected smaller than that of high speed steel tools
