基于新型改进钻尖的高锰钢钻削功率的实验研究

Experimental Research on Drilling Power for High Manganese Steel Based on New Improved Drill Tool

高锰钢在加工过程中,塑性变形大,加工硬化现象严重,因此钻削加工高锰钢一直是机械加工行业中的难点。在钻削高锰钢的过程中,会产生极大的切削力,会大大消耗机床的功率。通过对钻削加工用硬质合金钻头的几何参数进行改进,主要是对主切削刃前角、外缘转点以及横刃进行改进,达到降低钻削功率的目的,同时,利用多元线性回归理论,得出基于实验数据的多元回归钻削功率的数学模型,从理论上证明此次刀具改进的有效性。

During the process of drilling high manganese steel, the hardening phenomenon is serious because of the large plastic deformation, so the drilling of the high manganese steel has been a difficulty among the mechanical processing industry. During the process of drilling high manganese steel, great cutting force is produced, so the great power of the machine tool is consumed. Through improving the geometric parameters of the cemented carbide bit such as the rake angle of main cutting edge, outer fringe cusp and chisel edge, the goal of decreasing the drilling power was achieved. Multiple regression mathematical model of drilling power based on experimental data was obtained by multiple linear regression theory and the improving validity of the drill tool was proved in theory.