基于磨削力的铣刀螺旋槽磨削工艺优化

Optimization of the milling cutter spiral groove grinding process based on grinding force

为了提高铣刀磨削质量,以铣刀磨制过程中的磨削力为对象,通过求取砂轮与铣刀接触线的表达方程,建立铣刀螺旋槽磨削过程磨削力求解模型,讨论磨削力对铣刀磨削质量的影响。以影响磨削力的主要因素铣刀进给速度及磨削深度为变量,提出等进给速度及变进给速度两种减小磨削力、降低应变的优化方案。通过调节进给速度及磨削深度,在保证磨削效率不变的情况下,减小磨削力,从而减小螺旋槽在磨削过程中因磨削力而产生的形变量。建立铣刀三维模型,导入ANSYS的Workbench中进行磨削过程仿真,得出具体形变量,验证磨削优化方案的准确性。

In order to optimize the milling cutter grinding process,taking the grinding force in the grinding process of the milling cutter as the object,the grinding solution model of the grinding cutter spiral groove grinding process was established by finding the expression of the contact line between the grinding wheel and the milling cutter,and the influence of the grinding force on the grinding quality of the milling cutter was discussed.Taking the main factors affecting the grinding force,milling cutter feed speed and grinding depth,two optimization schemes were proposed—equal feed speed and variable feed speed.By adjusting the feed speed and grinding depth,the grinding force was reduced under the condition that the grinding efficiency remains unchanged,thereby reducing the shape variable caused by the grinding force in the grinding process of the spiral groove.The 3D model of the milling cutter was established and imported into ANSYS for grinding process simulation to obtain specific shape variables to verify the accuracy of the grinding optimization scheme.