Tool Path Strategies for High Speed Machining

CAD/CAM technology is coming to recognize the specific needs for new tool path strategies and approaches to suit the HSM environment. HSM can be defined as the use of higher spindle speeds and feed rates to remove material faster without a degradation of part accuracy or quality. The goal is clear--finish mill, to net shape, molds and dies to improve surface finish and geometric accuracy so that polishing is reduced or eliminated. This paper discusses the merits of smart machining, knowledge of stock remaining, cornering treatment, side steps, NURBS-based tool paths, trochoidal machining, and plunge roughing as they pertain to high speed machining. Author: Dan Marinac, Cimatron Technologies, Inc., Livonia, MI.