OPERATIONS PERFORMED ON MILLING MACHINE

Unlike a lathe, a milling cutter does not give a continuous cut, but begins with a sliding motion between the cutter and the work. Then follows a crushing movement, and then a cutting operation by which the chip is removed. Many different kinds of operations can be performed on a milling machine but a few of the more common operations will now be explained. These are:

Plain milling or slab milling

Fig. illustrates the plain and slab milling operation. It is a method of producing a plain, flat, horizontal surface parallel to the axis of rotation of the cutter.

Face milling

Fig. illustrates the face milling operation. It is a method of producing a flat surface at right angles to the axis of the cutter.

Side milling

Fig. illustrates the side milling operation. It is the operation of production of a flat vertical surface on the side of a work-piece by using a side milling cutter.

Angular milling

Fig. illustrates angular milling operation. It is a method of producing a flat surface making an angle to the axis of the cutter.

Gang-milling

Fig. illustrates the gang milling operation. It is a method of milling by means of two or more cutters simultaneously having same or different diameters mounted on the arbor of the milling machine.

Form milling

Fig. illustrates the form milling operation. It is, a method of producing a surface having an irregular outline.

End milling

Fig. illustrates end milling operation. It is a method of milling slots, flat surfaces, and profiles by end mills.

Profile milling

Fig. illustrates profile milling operation. It is the operation of reproduction of an outline of a template or complex shape of a master die on a work piece.

Saw milling

Fig. illustrates saw milling operation. It is a method of producing deep slots and cutting materials into the required length by slitting saws.

T-slot milling

Fig. illustrates T-slot milling operation.

Keyway milling

Fig. illustrates keyway milling operation.

Gear cutting milling

Fig. illustrates gear cutting milling operation.

Helical milling

Fig. illustrates helical milling operation.

Flute milling

It is a method of grooving or cutting of flutes on drills, reamers, taps, etc.

Straddle milling

It is a method of milling two sides of a piece of work by employing two side-milling cutters at the same time.

Thread milling

It is a method of milling threads on dies, screws, worms, etc. both internally and externally. As an alternative to the screw cutting in a lathe, this method is being more extensively introduced now a day in modern machine shops.

Source Introduction of Basic Manufacturing Processes and Workshop Technology by Rajender Singh.