Machining Techniques

Machining refers to the industrial process of cuttingmetals with tight tolerance within .0005'. Besides this,
and fabricating metals and other materials intochemical etching machining is capable of producing
predetermined shapes and sizes. Machining process issmall holes and bars that are not possible with other
controlled with the help of computer numeric controlmachining techniques. Another common process is
(CNC) software that guides the cutting equipmentWire Electrical-Discharge Machining (EDM) in which the
along the lines and arcs of a computer aided designmetal is separated from a conductive work piece by
(CAD) drawing.means of electrical erosion. During this process, the
A machining process may involve the use of differentwire never touches the conductive work piece and
techniques depending on the number of parts beingleaves a path on the work piece, which is slightly
manufactured and the type of material. Machininglarger than the wire.
techniques may include manual machining, which isAnother technique known as the metal stamping
used for cutting metal sheets in simple shapes suchmachining phenomenon, which is also referred to as
as circular, square, and rectangular. This process isprogressive die stamping or long run metal stamping,
however being replaced by automatic machiningis extensively used in production of precision parts
systems and processes that can cut any type ofwith thickness from .002' to .135'. The technique is
shape out of metal sheets needed for differentmainly used for processing typical low price parts that
purposes.are formed into three dimensions.
Chemical etching machining technique is mainly usedApart from these, some modern techniques are also
for producing typical precision parts. The machiningin use such as abrasive water jet and laser machining
system offers a great flexibility for producingthat are more accurate and environment friendly as
precision parts with unusual configuration as well ascompared to conventional machining techniques.