深孔麻花钻三维参数化设计及其优化

3D parametric design and optimization of twist deep hole drill

为减小深孔麻花钻在切削过程中的刀具损伤,延长其使用寿命,选定其几何参数为优化对象,以切削过程中钻削力达到最小为优化目标,基于所开发的深孔麻花钻三维参数化设计模块,结合有限元仿真以及多元正交非线性回归试验设计等方法,建立钻削力数学模型,并运用遗传算法实现优化。结果显示,当深孔麻花钻的第一后角、钻尖顶角以及螺旋角分别为5.24°、141.56°、64.99°时,其钻削力最小。深孔麻花钻三维参数化设计模块应用数据库技术,解决了传统设计过程中效率低、工作量大以及精度较差等问题。

In order to design a new kind lected as the optimization objects and the of twist deep hole drill, the geometric parameters are se drilling force at the minimum is targeted for optimization. Based on the 3 D parametric design module of twist deep hole drill and combined with the finite ele- ment simulation and multivariate orthogonal nonlinear regression test design method, the mathemati- cal model of the drilling force was established and optimization was rithm. The results indicated that drilling force reached the minimum 5.24° spire angle is 141.56° and helix angle is 64. 99°. The 3D database technology could overcome problems such as low efficiency, racy encountered in traditional design process. reached by using genetic algo- when the first posterior horn is parametric design module with heavy workload and poor accu