Prediction of Thrust and Torque for Multifacet Drills (MFD)

[+] Author and Article Information
Horng-Tsann Huang, Cheng-I Weng, Chao-Kuang Chen

Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan, ROC

J. Eng. Ind 116(1), 1-7 (Feb 01, 1994) (7 pages) doi:10.1115/1.2901805 History: Received October 01, 1987; Revised June 01, 1992; Online April 08, 2008


A multifacet drill (MFD), developed around 1953, has been used to improve the drilling performance by modifying the drill point geometry. A theoretical method for predicting the thrust and torque for an MFD is developed on the basis of the cutting mechanics for a conventional drill. Experiments show the proposed model is quite satisfactory for a wide range of applications. Also, from the analytical model the effects of the major features of the drill point geometry on thrust and torque can be studied.

Copyright © 1994 by The American Society of Mechanical Engineers
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