Cost

Milling

Manufacturing Processes

Name:Abdelftah Al-Suht

ID: 20121103080

INTRODUCTION

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 axis of

rotation.

The cutting tool used in milling operation is called 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. These

conditions will be discussed later in this unit as milling speed, feed rate and depth of cut.

Normally, the milling operation creates plane surfaces. Other geometries can also be

created by milling machine. Milling operation is considered an interrupted cutting

operation teeth of 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 bear the

above stated conditions. Depending upon the positioning of the tool and workpiece the

milling operation can be classified into different types.

Objectives

After studying this unit, you should be able to understand:-

-introduction and working principle of milling machine,

-different type of milling operations,

-different type of milling machine and their main parts

PRINCIPAL PARTS OF A MILLING MACHINE

Generally columns and knee type milling...