By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Nov 29

Cutting a gear wheel

All Topics | Latest Posts

Search for:  in Thread Title in  

Articles

CNC Milling with MACH 3 - Part 1

CNC Milling with MACH 3 - Part 1

An introduction to CNC - The basics

Ruud Pollen20/05/2009 13:24:03
1 forum posts
Dear ....,
 
I have made a file of X,Y points
If connecting each pont to the next point I have a real good
descriotion of my product and I can draw it by some macro''s in EXCEL
 
The question is when I like to make use of   one of the CNC programs
What I have to do when the mill diameter is for instance 3 mm?
Can I generate a G plot file direct from my X,Y pony file and will do the
CNC program the recalculation with the known mill diameter or
should I do the recalculation by makeing an adapted G file?
 
Ruud Pollen
Mark Fraser22/05/2009 20:47:52
4 forum posts
The trick will be the offset of points along non-orthogonal lines, or arcs.
You'll have to create another path one radius outside of the object's
outline.  Make sure the path goes in the desired direction - normal or
climb milling.  I'd guess that the spreadsheet would be better as you can
at least do math and geometrical calcs there, perhaps even trig.
On the other hand, there are lots of free cad programs around, and 
lots of .dfx to gcode (my fave is ace.convertor) freebies as well.  
But the excel exercise is good as a basic learning tool...
Sort of appropriate for MEs - spend more time making the tools
than the object to be created therewith <grin> /mark fraser

Maarten van Veen03/06/2009 19:57:18
1 forum posts
If you really want to indulge yourselve in mathematics, you can work it out as Mark suggests. However, if you want to produce the part, try to create a *.dxf file and from there, use a CAD program. I use Cut2D to full satisfaction (usual disclaimer) . The program calculates the new path, taking into account the diameter of the endmill. Watch out, the program does not protest if you endmill has too large a diameter !
I also use a program called involute.exe which creates the Gcode.
regards, Maarten

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Latest Forum Posts
Support Our Partners
Eccentric July 5 2018
Eccentric Engineering
Ausee.com.au
Warco
ChesterUK
emcomachinetools
Allendale Electronics
TRANSWAVE Converters
Sarik
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest