Interpretation of Side Rake Angle with Cutting Force and Surface Finish in Turning – An Experimental Approach
Keywords:
Side rake angle, Cutting force, Surface finish, feed per revolution, Dry machiningAbstract
Cutting tools for metal cutting have many shapes, each of which are described by their angles or geometries. Every one of these tool shapes has a specific purpose in metal cutting. The primary machining goal is to achieve the most efficient separation of chips from the work piece. For this reason, the selection of the right cutting tool geometry is critical. This paper presents an experimental investigation on the cutting tools having varied side rake angles and its strength and suitability on metal cutting application. Different side rake angle tools were taken for testing on EN8 material. A HSS cutting tools with -2˚,-4˚,-6˚,-8˚,-10˚,-12˚,0˚,2˚,4˚,6˚,8˚,10˚,12˚ side rake angles keeping 0˚Back rake angle were used for turning the specimen under dry conditions. The Surface texture is measured using SJ201P, MITUTOYO Make surface roughness measuring instrument. The cutting force and feed force and thrust forces measured using turning tool dynamometer. Micro chipping and macro chipping if any were recorded using a tool makers Microscope. The results indicated that the 12˚ positive side rake angle tool shown least cutting force and 12˚ negative side rake angle tool shown highest cutting force.
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