what is a cnc machine
TRANSCRIPT
Who am I?
● Hak Felez Mashhad Co.
- IT & Electronics manager
- Researcher
- CNC developer
- Embedded systems designer/developer
How we used to make things!
Difficulties:
● Needed manpower● Needed plenty of time● Was in lower quality● Had higher costs● ...
Then we made these
Milling Machine Lathe Machine
But it was also manual
Problems:
● Was hard● Took time● Was dangerous ● Product was not precise● ...
We’ve needed to do things automatic! but HOW?
So we’ve combined things we had
+
Punched tape
Then Magnetic tape
Still there where problems
● Was hard to produce commands● Was annoying● Was hard to manage● Couldn’t do sophisticated things● ...
Just say what is CNCfor God's sake!
CNC stands forComputer(ized) Numerical Control
Then we’ve changed them with this...
And this!
How to program?
What was before?
By the end of the 50's, NC was starting to catch on, though there were still a number of issues. For example, G-Code, the nearly universal language of CNC we have today, did not exist. Each manufacturer was pushing its own language for defining part programs.
The Electronic Industry Alliance standardized g-code in the early 1960's.
(This program draws a 1" diameter circle about the
origin in the X-Y plane. )G17 G20 G90 G94 G54
G0 Z0.25
X-0.5 Y0.
Z0.1
G01 Z0. F5.
G02 X0. Y0.5 I0.5 J0. F2.5
X0.5 Y0. I0. J-0.5
X0. Y-0.5 I-0.5 J0.
X-0.5 Y0. I0. J0.5
G01 Z0.1 F5.
G00 X0. Y0. Z0.25
G-Code
or G programming languagenot to be confused with LabVIEW's G programming language.
(This program draws a 1" diameter circle about the origin in the X-Y plane. )G17 G20 G90 G94 G54
G0 Z0.25
X-0.5 Y0.
Z0.1
G01 Z0. F5.
G02 X0. Y0.5 I0.5 J0. F2.5
X0.5 Y0. I0. J-0.5
X0. Y-0.5 I-0.5 J0.
X-0.5 Y0. I0. J0.5
G01 Z0.1 F5.
G00 X0. Y0. Z0.25
G-Code problems
● Too many codes for small jobs● No graphic view● Couldn’t write code for more sophisticated
products● Needed to calculate and measure things
yourself● Each manufacturer has it’s own standard
of coding
Imagine you want to write a code for doing this job!
We invent CAD/CAM
CAD - Computer Aided Design
CAM - Computer Aided Machining
G-Code again!
Now we can do this easily
Also This
Or this
Or even this
And by changing tool we can cut
Can mark
Can weld
And nowadays we can print objects!
What do we do at the factory?
Our own CAD/CAM software
Our own machines
Some samples
