Need Help!- understanding CAD/CAM usage

[sion]

Hello,
I am beginner. I have some basic understanding questions.

I want to machine some simple L shape profiles on a modern milling machine. Would I really need a CAD/CAM software to generate CNC code?
Can I write by myself a simple CNC program, load and run the machine? if yes, would the following be a complete code and ready to load to machine?

N01 X0.5 Y0.0 Z0.0 F10
N02 X0.5 Y0.5 Z0.5 F10


Or… I have to follow specific format (structure, headers etc) before feeding it to CNC machine controller?
Would I need some special editor (or just windows editor) to write CNC program?
in this case how i would trasfer the CNC code to controller (a floppy or memory stick etc)
In which format should I save the code file so I could load it to CNC machine controller?
I would be thankful for some help.

[ger21]

Most code is just a text file, and any editor can be used. Many write g-code by hand and don't use a CAM program.

You need to add a G1 to your code.

N01 G1 X0.5 Y0.0 Z0.0 F10
N02 G1 X0.5 Y0.5 Z0.5 F10

Your other questions may depend on what control you're using. Some machines don't use standard g-codes, and use a proprietary format

[sion]

Thanks ger21,

There could be two possible codes:
N01 G01 X0.5 Y0.0 Z0.0 F10
N02 G01 X0.5 Y0.5 Z0.5 F10

Or
N01 G01 X0.5 F10
N02 G01 Y0.5 Z0.5 F10

Both will work?

Can someone post an example of a very simple G-code for a Sinumerik (840D)?

Thanks

[John Walker]

Hi

This is a link to some 840D documentation at the Siemens site. It is in french, but you should be able to pick up on the code format.

http://www.automation.siemens.com/do...7_fr&scope=all

You can program using a text editor, but it may not be much fun and wouldn't give you any visual feed back until you were on the control.

www.cncprogramdeveloper.com

[DareBee]

For the few lines of code you are talking about, you wont need to "transfer" it to the machine.
You will need to start the input for a new program and type it into the control. Save when done and run it.

PS Don't forget about tool and fixture offsets and abs or inc (G90/G91)