Milling Machine 

A Milling Machineis employed to remove material from an object undergoing some work by constantrotation of a cutting tool into the desired area of a work piece. The machinescan be oriented vertically or horizontally depending on the type ofapplication. The milling machine normally employed to machine flat andhaphazard shaped surface. This can also be used for drilling, boring andcutting threads, gears and slots.

Milling machinesare designed in various types and they perform a variety of functions. Thesemachines primarily employ rotating tools for cutting a work piece. However, inoil milling units, a machine is rotated about an axis to grind material forobtaining the oil extracts. The milling machines may have a number of cuttingedges that create a dent in the material and obtain the desired shape or bore. Themilling process can either be performed manually or through power-operatedmachines.

WorkingMechanism of Milling Machines

In the millingprocess, the work piece is normally held in a vice that features two paralleljaws, or the work piece could be held by a device clamped to a table which hasbeen arranged to move in three perpendicular directions. Disk cutters areattached through holes to shafts attached to the machine spindle. The spindlesfeature teeth on peripheries only or both face and periphery.

While performingthe functions on a work piece performed on a table that is run manually or bypower against the rotating cutter. Milling machines are normally suitable forflat surfaces, however, any shape that is susceptible to be ground on thecutter can be reproduced on the work.

MillingMachine Applications

Some of the majorapplications of milling machines are as given below:

• Milling machines are used for machining flat surfaces, contoured surfaces and clotting.
• Milling machines are designed for making complex and uneven areas, gear cutting, revolution surface, and machining internal and external threads.
• Used for machining helical surfaces (helical is a shape resembling a corkscrew or spiral staircase) of different cross-sections. 

ImportantMilling Machine Parts