Abstract
The temperature generated in drilling has a critical influence on tool wear and tool life. This paper describes the use of the finite-element method for calculating the transient drill temperature for spade drills with arbitrary drill point angles. Increasing the drill point angle of the spade drill shortens the cutting edge and increases the drill temperature. The effects of the cutting speed and feed on the drill temperature responses have been investigated. Temperature calculations are compared with temperatures measured using the thermocouple method, the agreement being reasonable. The analytical drill temperature distributions can be used to evaluate the working conditions from the standpoint of the thermal analysis.
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