Cutting speed

PCD turning tools can be machined at very high spindle speeds, but the effect of changes in cutting speed on the quality of the machining cannot be ignored. Although high-speed 

cutting can improve machining efficiency, under high-speed cutting conditions, the increase in cutting temperature and cutting force can cause damage to the tool tip and cause vibration

of the machine tool. The reasonable cutting speed of PCD inserts is different when processing different workpiece materials. For example, the reasonable cutting speed of milling Al2O3 

laminate flooring is 110-120m/min; the reasonable cutting speed of turning SiC particle reinforced aluminum matrix composites and silica-based engineering ceramics It is 30 to 40 m/min.

Feed rate

If the feed rate of the PCD cutting tool is too large, the residual geometric area on the workpiece will increase, resulting in an increase in surface roughness. If the feed rate is too small, the 

cutting temperature will increase and the cutting life will decrease.

Cutting depth

Increasing the cutting depth of the PCD tool will increase the cutting force and the cutting heat, which increases tool wear and affects tool life. In addition, the increasing of the cutting depth 

tends to cause the PCD tool to chip.

PCD tools of different grain sizes have different cutting performance when machining different workpiece materials under different processing conditions. Therefore, the actual cutting 

parameters of PCD tools should be determined according to the specific processing conditions.