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Posted on August 23rd, 2008 by A & A Machine Shop
Turning
Turning produces cylindrical parts. The concept is the
same as a wood turning lathe where a cutting tool is applied to
raw material that is spinning rapidly. The cutting tool makes
the stock circular (changes a square or rectangular piece of
stock into a round one), and can reduce the diameter of the
circular stock to match a predetermined pattern.
Milling
Milling is the process of cutting away material form the
raw stock to match a predetermined pattern. In milling, a work piece
is fed past a series of multiple toothed cutters. The cutting action
of the teeth on the milling cutter removes excess raw material. The
finished product can be curved, flat or even angular in any
combination of shapes
Drilling
Drilling is something that we are all pretty familiar with.
It means boring a hole into raw stock. The cutting tool that is used
to bore the hole is called a drill.
Grinding
Grinding is the wearing away of material by the application of
friction. Machine shops likely use high powered mechanical grinders,
but we have all done it in a small way, when using a piece of
sandpaper on a rough piece of wood.