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Milling Machine is a machine tool that is used to remove the material from flat and irregular surfaces. It is generally used to create gears.
The various types of machine tools are
In today's session, we will discuss Definition, Parts, Types, Application, Advantages, and Disadvantages of Milling Machine in detail.
So now let's start with the Definition of Milling Machine.
Milling Machine is a machine tool that uses a multi-point cutting tool for removing a layer of material in the form of grooves from the surface of the workpiece.
Some Key Points on Milling Machine:
The Parts of the Horizontal Milling Machine are as follows.
The explanation for the parts of horizontal milling machine is as follows.
It provides support to all the parts of the machine and which can absorb the vibrations induced during milling operation and also acts as a reservoir for the cutting fluids.
The column is the main supporting frame mounted vertically on one side of the base which is box-shaped and has all the mechanisms inside it for the spindle and table feed.
The saddle rests on the knee and it moves transversely, i.e., crosswise (in or out) on guideways provided on the knee.
The table made of cast iron rests in the saddle on guideways and provides support to the work.
The worktable and hence the job fitted on it is given motions in three directions:
The Overarm is mounted at the top of the column and is the support for the arbor.
The arbor is a machined shaft that holds and drives the cutters. The arbor support is fitted to the Overarm and can be clamped at any location. Its function is to support various arbors.
The upward movement and the downward movement to the knee and the table can be given by means of elevating screw which is operated either manually or Automatic.
The different types of Milling Machines are as follows.
A horizontal Milling machine is a type of machine which can hold and rotates the spindle in the horizontal orientation which can remove the material from the surface of a stationary workpiece.
Horizontal Milling machine have shorter and thicker cutting tools.
A Vertical Milling machine is a type of machine which can hold and rotates the spindle in the vertical orientation which can remove the material from the surface of a stationary workpiece.
Vertical Milling machine have longer and thinner cutting tools.
In this column and knee type milling machine, a vertical column is attched to the bed which consists of gear drives that can rotate saddle and knee.
A knee is situated on the vertical column which can move up and down by means of elevating screw which can raise or lower the workpiece.
A saddle is placed on the top of the knee which can move in transverse directions and which vcan make the worktable to move along it.
In this simplex milling machine, the spindle or the spindle head can travel only in one direction, and mostly it can travel in the vertical direction only.
In this duplex milling machine, the spindle or the spindle head can travel in two directions i.e. horizontal and vertical directions.
In this triplex milling machine, the spindle or the spindle head can travel in three directions i.e. along X-axis, Y-axis and Z-axis.
As the name indicates that the bed of the machine is fixed type and there is no arrangement of saddle and knee in transverse and vertical directions.
And the worktable is situated on the fixed bed.
The spindle is mounted in a spindle head which can move along horizontal and vertical directions to perform machining operation.
It is similar to horizontal milling machine but there is an arrangement of swing up the table upto 45 degrees in X and Y directions.
These are the different types of Milling machines that can be used to perform various operations.
These are the operations we can perform on a Milling Machine:
The detailed explanation for the different types of milling operations is as follows.
If the Milling Operation is used for removing a layer of material from a complete surface of the workpiece is called a face Milling Operations.
If the Milling Operation is used for producing slots in the component is called a slab or slot Milling Operations.
In general, both the types of milling operations will be performed by using both the type of milling cutters but it is preferable to perform face Milling Operation with end mill cutter and slab Milling Operations with a peripheral milling cutter.
When peripheral milling cutter is used for performing the Milling Operation there are two methods of milling will be used.
By end mill cutter, we can perform End Milling Operation.
For machining slots, pockets, keyway, etc
Angle milling cutter or fitting spindle head in vertical.
By side and face milling cutter, we can perform this operation.
By form milling cutter, we can perform this operation.
By the metal, slit saw.
By plain milling cutter or end milling cutter, we can perform this operation.
By using Formed tooth cutter with dividing head.
By a ball nose cutter on CNC Milling machine (Both 3D and 2D profiles)
Produces grooves and prosperity of cylindrical work.
These Milling Operations are performed on various milling machines.
The applications of Milling Machine are as follows.
The advantages of Milling Machine are as follows.
The disadvantages of Milling Machine are as follows.
Face Milling Operation
Slot or Slab Milling Operation
End Milling Operation
Side and Face Milling Operation
Form Milling Operation
Slitting Operation
Angular Milling Operation
Keyway Milling Operation
Gear Cutting Operation
Profile Milling Operation
Helical Milling Operation
Horizontal milling machine.
Vertical milling machine.
Plain milling machines.
Ram type milling machine.
Universal milling machine.
Bed Type milling machine.
Base
Column
Knee
Saddle
Table
Overarm
Arbor Support and
Elevating Screw.
It is similar to a horizontal milling machine but there is an arrangement of swing up the table up to 45 degrees in X and Y directions.
Milling Machine is a machine tool that uses a multi-point cutting tool for removing a layer of material in the form of grooves from the surface of the workpiece.
More Resources:
Drilling Machine
Radial Drilling Machine
Lathe Machine
Surface Grinding Machine
Nice written article with respective figures. Thanks for the valuable information...
Cool explanation