INTRODUCTION TO MILLING
INTRODUCTION TO MILLING
Milling is a process in cutting away materials such as aluminium by feeding the workpiece into a revolving cutter.The cutting method of the many teeth around the milling cutter provides a fast action of machining. The machining surface may be plane surfaces, parallel or right angled to base surface. Milling can also be used to produce irregular surfaces and can used to drill, bore, cut gears and produce slots. Milling machine is responsible for holding the work piece, rotating the cutter and also feeding in the material or work piece. The work piece on the bed can be fed into the miling machine by the x,y,z axis manually. Most milling machine are equipped with power feed. Power feed provides smoother surface finish compared to the manual feed. Besides power feed is more efficient on long cuts compared to manual ones. On some machines, the power feed is controlled by a forward reverse lever and a control speed knob.
Classification of milling
The picture above is the example of peripheral milling
-In peripheral milling is a process to produce a parallel machined surface to the axis of the cutter.Peripheral milling is classified under 2 headings
1)Face Milling
This process is performed by a face milling cutter revolving in an axis of rotation perpendicular to the workpiece surface. The milled surface are produced from the action of the cutting edges located on the periphery and the face of the cutter.
2)End Milling
This milling process is responsible for producing flat surface that can be vertical, horizontal or with an angle depending on the reference which is the on the table surface of the milling machine.In end milling process,the cuter revolves about an axis which is vertical to the workpiece surface unlike the face milling where the cutter revolves perpendicularly.This cutter can be tilted and be measured to the machine tapered surface.The cutting edge can be found on the end surface of the cutter and the periphery of the cutter
Milling is a process in cutting away materials such as aluminium by feeding the workpiece into a revolving cutter.The cutting method of the many teeth around the milling cutter provides a fast action of machining. The machining surface may be plane surfaces, parallel or right angled to base surface. Milling can also be used to produce irregular surfaces and can used to drill, bore, cut gears and produce slots. Milling machine is responsible for holding the work piece, rotating the cutter and also feeding in the material or work piece. The work piece on the bed can be fed into the miling machine by the x,y,z axis manually. Most milling machine are equipped with power feed. Power feed provides smoother surface finish compared to the manual feed. Besides power feed is more efficient on long cuts compared to manual ones. On some machines, the power feed is controlled by a forward reverse lever and a control speed knob.
Classification of milling
The picture above is the example of peripheral milling
-In peripheral milling is a process to produce a parallel machined surface to the axis of the cutter.Peripheral milling is classified under 2 headings
1)Face Milling
This process is performed by a face milling cutter revolving in an axis of rotation perpendicular to the workpiece surface. The milled surface are produced from the action of the cutting edges located on the periphery and the face of the cutter.
2)End Milling
This milling process is responsible for producing flat surface that can be vertical, horizontal or with an angle depending on the reference which is the on the table surface of the milling machine.In end milling process,the cuter revolves about an axis which is vertical to the workpiece surface unlike the face milling where the cutter revolves perpendicularly.This cutter can be tilted and be measured to the machine tapered surface.The cutting edge can be found on the end surface of the cutter and the periphery of the cutter