What is milling machine? & Classification

Milling

Milling machine is a metal cutting operation in which the access material from the work is remove part by rotating multi point cutting tool is called meaning cutter.

A milling machine is a machine that tool remove material as work is paid against a rotating multi point cutter. The milling cutter rotates at high speed at in removes material a very fast rate with the help of multiple cutting edges.

One more number of cutter can be mounted simultaneously on a milling machine to this reserver milling machine fine while application in production.

Milling machine used for machine that process count surface internal external threads.

Working principle

The work piece is rigidly clamp on the table with the help of balls and Unti slots a milling cutter is mounted on the arbor and spindle the cutter rotates at high speed and work is fed slowly agains the cutter. The metal is removed by a series of cutting edges. The metal remove in the form of this continuous chips. The work can be fed in longitudinal,vertical and cross- wise direction at the cutter advances the metal is removed from the work is true obtained desired shape.

Classification Milling machine

1) Column and knee type milling machine

I) Plain milling machine.
ii) Vertical ,,
iii) Universal ,,

iv) Omni universal ,,

2) Fix bed type milling machine

I) Simplex milling machine.
ii) Duplex ,,
iii) Triplex. ,,
iv) Rise and fail type ,,

3) Roller shape milling machine

I) Rotary table milling machine.
ii) Drum type . ,,
iii) Stresses control ,,

4) Planner milling machine

5) Pleasure milling machine

I) Planetary milling machine.
ii) Thread ,,
iii) Profile ,,
iv) Gear ,,
v) Cam ,,
vi) Double end ,,

Column and knee type milling machine.
The principal of part of the column any type milling machine are described below :-

1) Base

It is foundation of machine and it is a made by cast iron. Upon base all other part are mounted it carriage a column is at one end it give machine rigidity and strain sometimes it also service at reservoir for cutting fluid.

2) Column

It is main supporting frame. The motor and other driving mechanism are contain within it supports and quick the knee in vertical travel.

3) Knee

The knee project the column and slide up and down on it. Face it’s suppose the saddle and table is partially supported by the elevating screw which are these it height.

iv) Saddle

The Saddle supports and carries the table & is adjustable transversely on ways on top of the knee. Provided the graduation for exact moment can be operated by hand or Power.

Table

The table rest on ways on the saddle of travel longitudinally in a Horizontal plate. It supports the work piece. Fixture & all other equipment

vi) overarm

The overarm is mounted on an guided by top of the column. It is adjusted to out by hand or power to the of maximum support for arbor & then clamped.

vii) Arbor arm

The arbor is an accurately machine shaft for holding driving the arbor tyre cutter. It is taper at one end to feed the spindle nose & has two slots to feed the nose key for locating & driving it.

2) Milling Cutter

Classification of milling cutter :-

It is a rotary tool-steel cutting tool with peripheral teeth use in milling machine to remove the material from the work piece through the relation motion of piece cutter.
All important tool material like carbon steel, high speed steel, cast non ferrous metal alloy, cemetery carbide sintered carbide etc. are used for meling cutter.

3) End milling cutter

4) Metal slighting saw milling cutter.

5) Angle cutter.

6) T- slot cutter.

Question

1) What is milling machine?

Ans. A milling machine is a machine that tool remove material as work is paid against a rotating multi point cutter. The milling cutter rotates at high speed at in removes material a very fast rate with the help of multiple cutting edges.

2) Working principal of milling machine?

Ans. The work piece is rigidly clamp on the table with the help of balls and Unti slots a milling cutter is mounted on the arbor and spindle the cutter rotates at high speed and work is fed slowly agains the cutter. The metal is removed by a series of cutting edges. The metal remove in the form of this continuous chips. The work can be fed in longitudinal,vertical and cross- wise direction at the cutter advances the metal is removed from the work is true obtained desired shape.