不同刃部处理硬质合金钻头的钻削力研究

采用不同刃口处理形式的硬质合金钻头对40Cr材料进行单因素钻削对比试验,研究了钻削速度及进给量对切削力的影响。结果表明:对于无涂层钻头,随着进给量提高,抛光钻头的切削力要小于未抛光钻头;对于涂层钻头,随着进给量提高,抛光钻头的切削力要大于未抛光钻头。随着切削速度的增加,无涂层钻头的钻削力先增大后减小;涂层钻头的钻削力则一直增大。

Study on Drilling Force of Carbide Drill with Different Edge Treatment

The carbide drills with different edge preparation were used for drilling of 40Cr. The influence of drilling speed and amount of feed on drilling forces has been studied by the single factor experiment. The conclusions indicated： when the feed went bigger, the drilling forces of the polished drills were lesser than unpolished drills for un-eoating drills; but for coating drills, the drilling forces of the polished drills were greater than unpolished drills. With the increase of cut- ting speed, drilling forces of un-coating drills mounted up first but went down afterward ; and the drilling forces of coating drills increased monotonously.