TOOL LIFE AND MACHINABILITY MODELS FOR DRILLING STEELS

被引：26

作者：

JALALI, SA

KOLARIK, WJ

机构：

[1] Department of Industrial Engineering, Texas Tech University, Lubbock

来源：

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE | 1991年 / 31卷 / 03期

关键词：

In-Process Tool Failures - Multiple Linear Regression Technique - Second-Order Models - Statistical Analysis Systems - Steel Machinability Models - Surface Roughness Model;

D O I：

10.1016/0890-6955(91)90074-D

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Four models for drilling steels are developed from an extensive machinability experiment. General purpose HSS drills were used for drilling 0.12% carbon steel. Predictive models were developed for tool life, thrust and torque on the drill, and surface roughness of the holes drilled. The research consisted of a laboratory experiment involving four independent variables; cutting speed ranging from 162 to 330 mm/s (32 to 65 sfpm), feed ranging from 0.0635 to 0.381 mm/rev (0.0025 to 0.015 ipr), drill diameter ranging from 7.54 to 14.68 mm (0.2969 to 0.5781 in.), and steel hardness ranging from 146 to 330 BHN. The experiment was designed as a central composite design with 30 treatment combinations. Tool life varied from 3.98 to 265.5 min. Full second-order models, containing 15 terms, were simplified to reduced models. Model fits ranged from an R-square of about 0.68 to about 0.92.

引用

页码：273 / 282

页数：10