Face Milling – Different Types Of Face Milling Operations

Introduction to milling Operation :

The milling machine is one of the important machining operations. In this operation the workpiece is fed against a rotating cylindrical tool. The rotating tool consists of multiple cutting edges (multipoint cutting tool). Normally axis of rotation of feed given to the workpiece. Milling operation is distinguished from other machining operations on the basis of orientation between the tool axis and the feed direction, however, in other operations like drilling, turning, etc. the tool is fed in the direction parallel to the axis of rotation.
The cutting tool used in milling operation is called a milling cutter, which consists of multiple edges called teeth. The machine tool that performs the milling operations by producing required relative motion between workpiece and tool is called milling machine. It provides the required relative motion under very controlled conditions.

Read More: Basic Of Milling -Up Milling and Down Milling

Face Milling Milling

In the operation of face milling, the axis of the milling cutter remains perpendicular to the surface being milled. In this case cutting action is done by cutting edges of both sides (end and outside) periphery of the milling cutter.

Depending upon the relative geometry of workpiece and milling cutter face milling is different types as described below.

Conventional Face Milling

In this case diameter of the milling cutter is greater than the width of the workpiece. The milling cutter remains overhanging on both sides of the workpiece.

Partial Face Milling

In this case the milling cutter overhangs on the workpiece on one side only.

End Milling

In case of end milling thin (low diameter) cutter is used as compared to workpiece width. It is used to make a slot in the workpiece.

Profile Milling

This is just like end milling in which the outer side periphery of a flat part is machined (milled).

Pocket Milling

This is a selective portion milling on the flat surface of the workpiece used to make shallow packets there.

Surface Contouring

In this operation a ball nose cutter if feedback and forth across the workpiece along a curvilinear path at short intervals. This creates the required contours on the surface of the workpiece. This operation is used to make contours of molds and dies and this time the operation is named as die sinking.

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• Basic Of Milling Machine | Interview Question and answers
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