Overview on CNC Machining Process

It has been analyzed and said by experts that a cnc machine is one of the best and versatile tool

that is easier for any type of works. A cnc machine can make hundreds or even thousands of

same items in a day which is not possible by hand. Thus they are considered efficient and

profitable. Whether a wood work or any type of work the cnc machine works well and makes

complicated things easier.

Cnc generally stand for computer numerical control that works through the use of a computer

that interprets a fastidious code called a G-Code to produce certain parts. It does the work by

cutting away the materials that the code tells it to cut. It has certain parameters that works within

the machine and are determined by a software program.

Now let us get into the process, the cnc machining is a specialization process through which

special parts are manufactured like gages, tools and several other machine parts. It can be done

with its close tolerances or custom-made by the latter costs more. In view of wherewithal,

apparatus, workforce one can contract out cnc products through best cnc machine shop.

Basically it involves four steps and they are roughing, semi-roughing, semi-finishing and the

complete outcome i.e. the final product.

The design engineer should hold adequate awareness of CNC to faultless dimensioning and

tolerance techniques for work pieces to be machined on CNC machines.

Most cnc machines are programmed using cad/cam software.

Basics steps are programming the code, loading the code, running the code, and the final result.

The cnc machine is programmed by generating g and m codes that are identified by the machine

it is a must to concentrate on the coding part very well. The g code is a Go code that notifies the

engine the specific actions, twists and slices to formulate; on the other hand the M code turns

fluids and other extra devices on and off. The codes are generated with a computer aided

machining program and the cam program is a part of cad i.e. the computer aided design program

where the parts are drafted into the computer to exact specifications.

After the coding part is done the completed code is loaded to get access to the next step. The

respective codes are loaded, saved and stored on flash or floppy drives to be shifted to the CNC

machine. A large library of codes are stored and used to simplify it on small microprocessors. In

other rare cases the cnc machine operator will craft the needed code directly into the machine.

As soon as the codes are bed-in, the CNC machine will tag along all the guidelines given to it in

the code. Finally it gets access and the concerned process of drilling and roughing are carried

out.

Source: Houston Machine Shop