In a cutting operations which is performed with a cutting tool with a normal rake angle...

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In a cutting operations which is performed with a cutting tool with a normal rake angle of 20 and a clearance angle of 7 a machining power of 1850 J/s is used to machine a part at a cutting velocity of 100 m/min. Under this cutting conditions the thrust force is measured as 550 N. The undeformed chip thickness is set to 0.2 mm while cutting a width of 3 mm. The chip thickness is measured as 1.2 mm and the length of contact between chip and tool is measured as 1.25 mm. (a) Calculate the proportion of shear zone heat conducted into the workpiece Calculate the maximum temperature along the tool rake face. Room temperature is 22 C, density of the material is 5000 kg/m, thermal conductivity is 40 J/smk, specific heat is 500 J/kgK. The width of the secondary deformation zone divided by the chip thickness wo is assumed to be 0.15 for the above mentioned cutting conditions. In a cutting operations which is performed with a cutting tool with a normal rake angle of 20 and a clearance angle of 7 a machining power of 1850 J/s is used to machine a part at a cutting velocity of 100 m/min. Under this cutting conditions the thrust force is measured as 550 N. The undeformed chip thickness is set to 0.2 mm while cutting a width of 3 mm. The chip thickness is measured as 1.2 mm and the length of contact between chip and tool is measured as 1.25 mm. (a) Calculate the proportion of shear zone heat conducted into the workpiece Calculate the maximum temperature along the tool rake face. Room temperature is 22 C, density of the material is 5000 kg/m, thermal conductivity is 40 J/smk, specific heat is 500 J/kgK. The width of the secondary deformation zone divided by the chip thickness wo is assumed to be 0.15 for the above mentioned cutting conditions.