Milling Operations | Functions Performed By a Milling Machine

Milling Machine
         Milling is the process of removing metal by feeding the work past against a rotating multipoint cutter. The metal is removed in the form of small chips. In milling operation the ratio of metal removal is rapid as the cutter rotates at a high speed and has many cutting edges thus the jobs are machined at a faster rate than with single point tools and the surface finish us also better due to multi cutting edges. It is used for machining flat and irregular surface.
01 - MILLING MACHINE - HORIZONTAL MILLING MACHINE
Milling operation


1. Plain or slab milling
01 - plain mill cutter - milling operation
Plain milling is the operation of producing flat horizontal surface parallel to the axis of the cutter using a plain milling cutter.


2. Face milling
01 - face milling -types of milling
The method of producing flat surface on the which is at the right angle to the axis of rotation of the cutter is called as face milling.


3. Angular or bevel milling.
01 - ANGULAR MILLING - TYPES OF MILLING
It is the operation of machining a flat surface at an angle other than the axis of the revolving cutter. The cutter used may be a single or double angle cutter depending upon whether a single surface is to be machined or two mutually inclined surfaces simultaneously.


4. Straddle milling
01 - STRADDLE MILLING - TYPES OF MILLING
Straddle milling is the operation of producing two vertical flat surfaces on both sides of the job by using two side milling cutters which are separated by collars. Straddle milling is very commonly used for milling square and hexagonal surfaces.


5. Gang milling
01 - GANG MILLING - TYPES OF MILLING OPERATION
Gang milling is the production of many surfaces of a job simultaneously by feeding the table against a number of required cutters. The two plain milling cutters have helical teeth of opposite hands. This method of operation saves machining time and hence it is widely used in mass production.


6. Form milling
Form milling is the operation of producing irregular surfaces or contours by using required form cutters. The irregular shape may be convex, concave or any other shape.


7. End milling
01 - end milling - types of milling
It is the operation of producing both peripheral and face milling operation simultaneously generates vertical, horizontal or angular surfaces by using a end milling cutter. It is used for milling slots, grooves, keyway etc.



8. T slot milling
Milling of t-slots is produced in two or three stages. In the first operation, the end milling operation or a plain slot is made by using an end milling cutter.
01 - T SLOT MILLING OPERAION - TYPES OF MILLING OPERATION
In the second operation. T-slot is made by using the t-slot cutter to enlarge the slot and to mill the bottom face of the slot.



9. Gear cutting
the gear cutting operation involves cutting of different types of gears on a milling machine.
01 - GEAR MILLING OPERATION - TYPES OF MILLING OPERATION
It is performed by using a form relieved cutter which is having the profile corresponding to the required tooth shape of the gear. Equally spaced gear teeth are cut on a gear blank by holding the work on a universal dividing head and then indexing it.
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