La rettifica dei bordi degli utensili PCD può essere suddivisa in diversi tipi di rettifica in base a diversi tipi di utensili, suddivisi principalmente in due tipi di rettifica a chamfer e rettifica cilindrica.
Lo strumento PCD è utilizzato principalmente per smerigliatrici cilindriche e macine manuali. Le ruote in diamanti in ceramica incollate hanno i vantaggi di un'elevata efficienza di rettifica, di elevata durata e di bassi costi di lavorazione. Le dimensioni, la concentrazione e il legante delle ruote di rettifica dei diamanti hanno una grande influenza sulla qualità di rettifica e l'efficienza degli strumenti PCD.
For example, a grinding wheel with a small particle size can obtain a lower abrasive surface roughness. The influence rule of the grinding wheel speed on the surface roughness is as follows: if the surface roughness value is larger, the rotation speed is higher or lower, at the optimal value, the rotation speed is medium, at the optimal value and the surface quality is good. The effect law of grinding pressure on surface roughness is just the opposite: when the grinding pressure is in the middle level, the surface roughness value is the largest, while when the grinding pressure is high (such as 5.5pa) and low (such as 2.5pa), the corresponding surface roughness is almost the same, which is different from the traditional grinding law. Generally speaking, on the premise that machining quality requirements can be met, grinding wheels with larger particle size should be selected as far as possible.
At present, the diamond grinding wheel with good processing effect is TY — ROLIT, because the diamond grinding grains are arranged in an orderly manner, and the grinding rate is 20 to 30 times that of the grinding wheel with the disordered arrangement of grinding grains, but the grinding cost is also relatively high.PCD tool grinding on grinding pressure, cooling fluid and other strict requirements. The optimum speed of PCD tool grinding should be 2500r/min(150mm diameter of a grinding wheel). The coolant concentration is 4%, the grinding pressure is 150N, and the surface roughness of the PCD tool can reach ra0.012um.
Quando si utilizza lo strumento PCD, il metodo di rettifica specifico da utilizzare deve ancora essere selezionato in base alla nostra situazione reale.
