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首页> 外文期刊>Indian journal of engineering and materials sciences >Investigation of the effects of machining parameters on the thrust force and cutting torque in the drilling of AISI D2 and AISI D3 cold work tool steels
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Investigation of the effects of machining parameters on the thrust force and cutting torque in the drilling of AISI D2 and AISI D3 cold work tool steels

机译：研究加工参数对AISI D2和AISI D3冷作工具钢钻孔时的推力和切削扭矩的影响

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In this study, the effects of workpiece hardness, drill diameter, drill length and drilling parameters on thrust force and cutting torque are investigated in the drilling of AISI D2 and AISI D3 cold work tool steels under dry drilling conditions. The experiments are performed at three cutting speeds (5, 10 and 15 m/min) and three feed rates (0.04, 0.05 and 0.06 mm/rev). Workpiece hardness, drill diameter, drill length, cutting speed are considered as independent variables (machining parameters), and full factorial design is selected for experimental trials. Analysis of variance (ANOVA) is employed to determine the most significant machining parameters on the thrust force and cutting torque. The predictive equations are developed in confidence intervals with the linear regression analysis to obtain the thrust force and cutting torque as a function of machining parameters and the correlation coefficients (R2) of equations for thrust force and cutting torque are calculated as 92.7% and 84.1%, respectively. As a result of this study, it is found that all of the machining parameters are effective on the thrust force and cutting torque. Thrust force and cutting torque increase with the increase of workpiece material hardness, drill diameter, drill length, feed rate and number of holes, and decrease with the increase of cutting speed.
机译：在这项研究中，研究了在干钻条件下AISI D2和AISI D3冷作工具钢的钻削过程中，工件硬度，钻头直径，钻头长度和钻削参数对推力和切削扭矩的影响。实验以三种切割速度（5、10和15 m / min）和三种进给速度（0.04、0.05和0.06 mm / rev）进行。工件硬度，钻头直径，钻头长度，切削速度被视为独立变量（加工参数），并且选择全因子设计进行试验。方差分析（ANOVA）用于确定有关推力和切削扭矩的最重要的加工参数。通过线性回归分析，在置信区间内建立预测方程，以获得推力和切削扭矩作为加工参数的函数，以及推力和切削扭矩的方程的相关系数（R 2 ）分别计算为92.7％和84.1％。这项研究的结果发现，所有加工参数对推力和切削扭矩均有效。推力和切削扭矩随着工件材料硬度，钻头直径，钻头长度，进给速度和孔数的增加而增加，而随着切削速度的增加而减小。

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