高速小直径深孔钻削的稳定性分析

Stability Analysis of High Speed Small Diameter Deep Hole Drilling

为了反映小深孔钻削机床加工过程中枪钻的稳定情况,对高速运转下的枪钻系统以及其不规则体的转子进行研究。基于机床颤振的非线性理论、深孔加工系统的非线性动力学、转子系统动力学建立枪钻加工小深孔的动力学模型,从而得到枪钻系统的动力学方程。运用MATLAB软件对其动力学方程进行求解,得到在不同转速下的x、y方向的稳定性。分析结果表明,转子的转速达到一定范围时枪钻系统趋于稳定,加工出的工件具有高精度。将其结果运用到实践当中,取得了良好的加工效果。

In order to reflect the gun drill’s stability of small deep hole drilling cutting machining,the study of the gun drilling under high speed and its irregular body of rotor influence systematic.Based on nonlinear theory of machine tool chatter.The nonlinear dynamics of the deep hole processing system,dynamics of rotor string the dynamic model of gun drill machining the small deep hole is established and the gun drill system dynamics equation is obtained.Using MATLAB software to solve the dynamic equations,the x and y direction stability shift is obtained under the condition of various rotational speed.The analysis results show that the stability amplitude is affected by the high speed of gun drilling system,the processing of the workpiece with high precision.To apply the results into practice,excellent processing effect has been proved to obtain.