Abstract
The cutting forces in broaching, tapping or slotting seven steels with different compositions and microstructures were measured. The range of cutting speed was 1-15 m/min and three lubricants with various additive contents were used. The rheological and tribological properties of the materials were obtained from plane strain compression tests. A simple and original method is proposed to deduce the chip formation and evacuation, specific forces from the tool geometry, and the cutting force. The variations of these specific quantities with the machining process, the cutting speed, and the properties of the machined material are discussed.
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