Computerized Numerical Control (CNC) is a terms used to describe machine control modified through the use of programmed set of instructions specifically operated to perform a certain task. These commands are encrypted on a storage medium compared to those pieces of machineries that are controlled mechanically like, for example, operating a lever or hand wheel to make a machine perform certain actions.
The first NC equipments were first manufactured in the 1940's and 1950's derived from present machines that were remodeled with motors that enable operators to operate the controls by following the instructions being encoded on a medium called a paper tape. These primitive tools were then modified with analog and digital computers that has led to the birth of the modern Computer Numerical Controlled equipments we know today.
In the contemporary models of CNC systems, the component designs of these machines are considered to be highly computerized and efficient through the use of CAD or CAM programs. These abstract instructions produces computer files which are then read to derive the commands which are essential to manipulate a certain piece of machinery which are then fed to the CNC machines.
Because any specific pieces of these machines need the use of various instruments such as drills, for example, contemporary pieces of machineries are often modified with tools doing multiple tasks within a single cell. Other times, various pieces of equipments are being operated using an external controller and operators that are fully automated that are instructed to manipulate the machine parts from 1 machine to another.
In any case, the diverse course of instructions essential to produce any component is completely electrical and can produce a part that closely resembles an authentic CAD design.
Even though contemporary storage for data and information continues to evolve, the use of paper tapes are still common for in CNC systems, this is due to its convenience it has. One finds it easier to add a tape reader to a microprocessor controller than to re encode tapes into a new set of layout. One transition that was implemented was the switch from paper tapes to mylar tapes which are stronger mechanically.
Then tapes are then eventually replaced by modern storage mediums such as flash drives and disks. These mediums are now more prominent especially in broader environments that are highly merged.
The expansion of CNC machines resulted to the necessity for new CNC specifications that were not hindered by licensing certain designs and models, like for instance, APT. Various criterions thrived for quite some time and most of them are derived from vector graphics markup languages which are upheld by plotters. One particular criteria has become prevalent among others is called the G-code. It was originally used on Gerber Scientific plotters and then was adapted for CNC purposes. This has been broadly accepted and applied that it has been integrated in EIA specifications. In turn at the same time the G code is the dominating language system used by CNC equipments today, there is the push to replace it with STEP NC which is a new system intentionally made for CNC instead of improving the G code to meet current plotter standards.
Low Cost Black Decker Mowers Price Desk Lamp Swing Arm
No comments:
Post a Comment