PDC钻头自动优化布齿设计软件平台建立

Establishment of Automatic Optimization Design Platform for Cutter Arrangement of PDC Bits

在PDC钻头产品结构中,布齿结构设计至关重要,直接影响PDC钻头的使用性能和寿命。利用PDC钻头切削力学分析程序计算钻头不平衡力和径向力/周向力比值,调整PDC钻头布齿结构,直到钻头力平衡与功力满足要求为止。采用人工探索的方式进行布齿结构设计,存在设计效率低、设计质量不稳定等缺点。利用MDO方法建立PDC钻头自动优化布齿设计平台,实现布齿结构自动优化设计,布齿结构设计时间仅为原来的1/16～1/8,其中人工干预时间仅为原来的1/96～1/48,布齿结构设计质量提高3～5倍,大幅降低了产品开发成本,提高了产品设计可靠性。

Among the structure of PDC bits,design of cutter arrangement is vital,which will directly affect the application performance and service life of PDC bits.Mechanical analysis procedure for cutting structure of PDC bits is utilized to calculate the unbalanced force and radial force/circumferential force ratio of bits,cutter arrangement of PDC bits is adjusted,until force balance and power as well as cutting force of bits can meet the requirements.Disadvantages like low design efficiency and unstable design quality normally exist when design cutter arrangement with artificial research method.Use MDO method to set up automatic optimization design platform for cutter arrangement of PDC bits,and realize automatic optimization design for cutter arrangement,the cutter arrangement design time is only 1/16～1/8of previous,wherein,artificial intervention time is only 1/96～1/48 of previous,but cutter arrangement design quality is 3～5times of previous,which dramatically decrease product development cost and enhance product design reliability.