针对纯达普高硅铝活塞销孔的难加工问题，对不同材质的镗杆主轴系统进行了静刚度和抗振性实验研究，表明硬质合金镗杆具有优良的抗振性能；并通过镗孔实验验证，完全满足加工要求。 In view of the difficult machining problem of pure Dachao Si-Si-Piston pin-hole, the static stiffness and anti-vibration experiment of boring bar spindle with different materials have been carried out, which shows that the cemented carbide boring bar has excellent anti-vibration performance. Hole experimental verification, fully meet the processing requirements.