Mountain Bike Parts

Programming 101: CNC

After The second world war, people realized that they have to produce goods at a faster rate and at less cost. Hence, mass production trending came to be. Those events resulted in the development of the Numerical Manage (NC) machines which in turn led to the Computer Numerical Control (CNC).

HOW TO PROGRAM A CNC MACHINE

CNC programming uses a code similar in framework to BASIC. So, knowing how to construct a simple keeping track of program, chances are, you already know such a G-Code looks like. However, there additional things you have to consider before you begin encoding instructions.

The first thing that you have to do is to assign values for each of the variables. These factors include the programmable motion instructions (axes), and the reference point for that axes. The values that you assign to these variables dictate the movement of the machine.

The next thing that you have to do is to take into account the accessories of the machine. Numerous machines have accessories that can enhance the capabilities of the fundamental device. However, using these add-ons requires you to include them in the coding system. This means that if you want a more efficient machine, you will have to know the machine inside out.

Reading through CODES

After those actions, you have to create a subprogram that will cope with the math. This step will then allow your machine to calculate the necessary variables and successfully operate without stopping to ask the operator what the restrictions are.

To show you what these codes look like, here’s an example from Wikipedia:

   #100=3   (bolt circle radius)
   #101=10  (how many openings)
   #102=0   (x position of click through rate of bolthole)
   #103=0   (y position associated with ctr of bolthole)
   #104=0   (angle associated with first hole
   Tool phone,
   spindle speed,and offset pick-up,etc
   G43 in some cases (tool length pickup)
   G81(drill cycle)
   call sub program
   N50
   G80
   M30
 
   Subprogram
   N100
   #105=((COS#104)*#100)    (x area)
   #106=((SIN#104)*#100)    (y location)
   x#105 y#106   (remember your own G81 code is modal)
   If #100 GT 360 goto N50
   #100=(#100+(360/#101))
   Goto 100

In the code above, the equipment is a drill. The operator utilized a loop in order to keep the machine from stopping. The actual subprogram then governs the cycle of the machine. This code is still quite a easy code. Other machines require the inclusion of the maximum Revoltions per minute in the coding.

An easier method of programming CNC machines would be the use of Computer Assisted Manufacturing (CAM). This system assumes the brunt of encoding so that it doesn’t seem so tiresome and frustrating. It is still similar to BASIC.

Another programming improvement that was developed was the parametric programs or the logical commands. These programs were designed to reduce lengthy codes in order to make them user friendly. However, these codes do not always use the same vocabulary with every machine. The language and sequence frequently varies depending on the typ of machine you will be working on.

The operator has to know what the machine can perform or what it was made to complete before attempting to program it. You should be able to visualize the equipment doing what you want it to complete.

But, you don’t have to be a math wizard or a encoding genius. You just have to know what your machine does and what you need it to do. Visit http://cncrouterzone.org/ for more information.