Abstract
A concept using an optimization technique to design multi-edge BTA tools with cutters ‘taggered’ on the cutting head is developed. The cutting edges are located on the head so that they cut in a circular pattern over a portion of the hole radius, partly overlapping with each other. In many applications these tools should be superior to the conventional single-edge tools or multi-edge tools with cutters located at 180 degress to each other. When heavy cuts and large hole sizes are attempted with single-edge tools a large resultant force transmitted to the bore wall through the guiding pads causes undue rubbing and wear of the pads. This is followed by heat generation and increased power consumption and deterioration of the cutting edges. The tools with a staggered or zigzag arrangement of the cutters are designed for a predetermined cutting force resultant necessary for the tool guidance, which is controlled by appropriate radial and angular location of the cutters on the cutting head. The cutters of these...
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