CNC Equipment, Machining, Milling, and Information
Articles, reviews, analysis, and how-to information
CNC stands for Computer(ized) Numerical(ly) Control(led), and refers
specifically to the computer control of machine tools for the purpose of
repeatedly manufacturing complex parts in metal and other materials, using a
program written in a notation conforming to the EIA-274-D standard and commonly
CNC was developed in the late 1940s and early 1950s by the MIT
Servomechanisms Laboratory. It's now commonly used around the world to create
exacting punches, milling, and drilling. For manufacturers and fabricators, CNC
technology is simply the way business is done.
This gives the CNC user several side benefits including reduced operator
fatigue, fewer mistakes caused by human error, and consistent and predictable
machining time for each piece. Since the machine will be running under program
control, the skill level required of the CNC operator (related to basic
machining practice) is also reduced as compared to a machinist producing work
pieces with conventional machine tools.
The introduction of CNC machines changed manufacturing. With CNC, curves cut
as easily as straight lines; 3-D structures are relatively easy to produce. The
second major benefit of CNC technology is consistent and accurate work pieces.
Today's CNC machines boast almost unbelievable accuracy and repeatability
specifications. This means that once a program is verified, two, ten, or one
thousand identical work pieces can be easily produced with precision and
CNC has heralded a new age of productivity
It reduces the number of machining steps that require human action have been
dramatically reduced, and this has automated the industry -- especially the
productivity of machine and manufacturing applications.
We're consistently better with CNC equipment. Higher quality is a fact of
life. With the increased automation of manufacturing processes and machining,
we're faster, too.
CNC automation nearly eliminates errors and provides CNC operators with time
to multitask and more effectively work.
It also allows for more flexibility in the way parts are held in the
manufacturing process and the time required to change the machine to produce
In a production environment, a series of CNC machines may be combined into one
station -- commonly called a cell -- to progressively machine a part requiring
CNC and Computer Added Drafting
CNC machines are controlled directly from files created by CAD software
packages, so that a part or assembly can go directly from design to
manufacturing without the need of producing a drafted paper drawing of the