Milling and turning operations

- Jul 04, 2018 -

MILLING OPERATIONS INTRODUCTION : •Milling is the machining process of using rotary cutters to remove material from a work piece advancing (or feeding) in a direction at an angle with the axis of the tool. •It covers a wide variety of different operations and machines, on scales from small individual parts to large, heavy-duty gang milling operations. •It is one of the most commonly used processes in industry and machine shops today for machining parts to precise sizes and shapes.

MILLING OPERATIONS INTRODUCTION : •Milling is the machining process of using rotary cutters to remove material from a work piece advancing (or feeding) in a direction at an angle with the axis of the tool. •It covers a wide variety of different operations and machines, on scales from small individual parts to large, heavy-duty gang milling operations. •It is one of the most commonly used processes in industry and machine shops today for machining parts to precise sizes and shapes.

PRINCIPLE OF MILLING MACHINE: •Milling operates on the principle of rotary motion. •A milling cutter is spun about an axis while a work piece is advanced through it in such a way that the blades of the cutter are able to shave chips of material with each pass. •Axis of tool rotation is perpendicular to feed.

HORIZANTAL MILLING MACHINE : •A horizontal mill has the same sort of x–y table, but the cutters are mounted on a horizontal arbor across the table. •Many horizontal mills also feature a built-in rotary table that allows milling at various angles; this feature is called a universal table. VERTICAL MILLING MACHINE : •In the vertical mill the spindle axis is vertically oriented. 

Milling cutters are held in the spindle and rotate on its axis. •There are two subcategories of vertical mills: the bed mill and the turret mill.