ICSS - MODELING EDGE-SNOW INTERACTIONS USING METAL CUTTING THEORY

ICSS - MODELING EDGE-SNOW INTERACTIONS USING METAL CUTTING THEORY

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MODELING EDGE-SNOW INTERACTIONS USING METAL CUTTING THEORY Christopher A. Brown Worcester Polytechnic Institute, Worcester, Massachusetts, USA brown@wpi.edu
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M. Eugene Merchant UVM’36 May 6, 1913–August 19, 2006 a philosopher and a prophet of manufacturing; … a pioneer in metal cutting research who transformed the art of metal transformed the art of metal cutting to the science of cutting to the science of metal cutting with his basic metal cutting with his basic theory of the mechanics of theory of the mechanics of metal cutting and the metal cutting and the famous Merchant circle famous Merchant circle ; … deeply concerned with the environmental and human aspects of manufacturing, http://scitation.aip.org/getpdf/servlet/GetPDFServlet? filetype=pdf&id=JMSEFK000128000004001034000001& idtype=cvips
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lean angle Fc = mv²/r Ft = mg cos α ) cos( * * ) tan( 2 α g r v LeanAngle = Lean angle CM
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Ski snow forces -Machining analogy Tool = Ski Workpiece = Snow Cutting = Skidding limiting condition on carving Cutting force = Turning force Rake angle = Edge angle (+90 deg)
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Ski-tool analogy SIDE WALL (relief face) M Fr Fc Ft SKI (tool) (negative rake) θ EDGE ANGLE (= 90° + rake) p SHEAR PLANE Shear Angle ø SPRAY (chip) SNOW (workpiece)
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Force limited cutting Hardness and depth of cut are balanced - penetration conditions Thrust force, hardness and depth of cut are balanced - cutting conditions Result is similar to friction angle - critical angle based on hardness and shear strength
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This note was uploaded on 04/29/2008 for the course ME 1800 taught by Professor Brown during the Winter '08 term at WPI.

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ICSS - MODELING EDGE-SNOW INTERACTIONS USING METAL CUTTING THEORY

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