MACHINING WITH ROUND INSERTS FACE MILLING CUTTER

STUDY OF SURFACE ROUGHNESS AND CHIP CROSSSECTIONAL AREA WHILE \MACHINING WITH ROUND INSERTS FACE MILLING CUTTER

Milling is a process of producing flat and complex shapes with the use of multi-toothcutting tool, which is  called a milling cutter and the cutting edges are called teeth. The axis of rotation of the cutting tool is perpendicular to the direction of feed, either parallel or perpendicular to the machined surface. The machine tool that traditionally performs this operation is a milling machine. Milling is an interrupted cutting operation: the teeth of the milling cutter enter and exit the work during each revolution. This interrupted cutting action

subjects the teeth to a cycle of impact force and thermal shock on every rotation. The tool material and cutter geometry must be designed to withstand these conditions. Cutting fluids are essential for most milling operations.

Milling Cutter with rotary tools is being rediscovered for their applications in machining of ‘difficult-to-machine’ materials or for general improvement in the productivity of machining operations. This seminar presents a study of the cutting process performed using specially designed and fabricated self-propelled round inserts face milling cutter. Statistically designed experiments help to study the chip cross-sectional area and surface roughness as response variable. From the experiment result, the chip cross-sectional and surface roughness is significantly influenced by inclination angle, feed rate, depth of cut. It is observed that the
inclination angle is the most significant factor influencing chip cross-sectional area and surface roughness give better result in 30 - 45 .

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