A modelling mechaniSm is int roduced tocomplete the PDC bit bottom modelling.The struc-ture and working principle of it are also introducedas well as the calculation of each angle and the ben-efit.

• 详细介绍了一种可以在铣床上完成PDC钻头底模成形所需要的成形机构，介绍了该机构的结构特点、工作原理以及使用该机构时各种角度的计算和应用该机构后的效益分析。