There are many challenging components for the toolmaker to consider for the successful implementation of High Speed Machining (HSM). Much has been written about the impact HSM has had on CNC machine tools, fixtures, spindles, tool holders, cutting tools, and controls. Often forgotten is the impact that High Speed Machining has on toolpath programming techniques. Computer Aided Manufacturing (CAM) technology is coming to recognize the specific needs for new toolpath strategies and approaches to suit the HSM environment. HSM can be defined as the use of higher spindles speeds and feed rates to removal material faster without a degradation of part accuracy or quality. When high speed machining feed rates will often exceed the 5000 mm/min or 200 ipm mark. 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. Some of the benefits of implementing HSM are to shorten delivery times, improved surface finish, reduced bench time, increased cutting efficiency, reduce workpiece distortion, reduce or eliminate the EDM process.
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