TEMPERATURE RISE IN TWIST DRILLS WITH A FINITE-ELEMENT APPROACH

The finite element method is presented to predict the temperature responses of a full scale conventional twist drill. The effects of the penetration depth, the cutting speed, the web thickness, and the helix angle on the drill temperature responses have been investigated. The temperature contours are also presented for the flank surface, the cross section, and the three-dimensional drill body. The transient numerical results compare favorably with experimental data from literature. The motivation is to develop an optimum working condition from the view point of the thermal analysis.