Re: [CAD_CAM_EDM_DRO] CNC Positioning

Ruan,

I will help you and help you with building your CNC router.

Zero comes in to parts. First in your Cad/Cam program you will need to know
where the 0,0 point is. The 0,0 point is normally at one corner of your
part or in my case I set it in the center of the part.

Next you will clamp down your part on the CNC router table.

Now with your controller (like Mach2) you will position (jog) your router so
that the router bit is at the same X,Y location that your Cad program had
the 0,0 point. Then set your controller DRO to 0,0. Next move the Z axis
down so that the router bit just touches the top of your material. Then set
the Z axis DRO to 0.

The Z part is assuming that you told your Cad/Cam program that the top of
the material was the 0 point in the Cad/Cam program.

At that point you can load your G code program, turn on your router and
proceed to machine your part.



Bob Campbell
Bob@...
www.campbelldesigns.com
Breakout board
THC board sets
CNC router plans
Stepper Motors

----- Original Message -----
From: "ruanb1" <ruanb1@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, April 13, 2004 10:23 AM
Subject: [CAD_CAM_EDM_DRO] CNC Positioning


> Hi
>
> Please don't $#@$ me for the stupid question I am going to ask now!!!!
>
> I want to try my hand at building a CNC router. Got all the parts etc.
>
> I would just like to know how do you tell the router where to start
> the cut? Say for instance I have an irregular shape mounted to the
> table, do I zero the controller or at the software???? Especially
> after say changing cutters or routing on both sides of the object.
>
> Sorry, extreme stupid, but never seen one of these in action, just
> dreaming of trying my hand it.
>
> Your answers will be greatly appreciated.
>
> Regards
> Ruan
>
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
timg@...
> Moderator: pentam@... indigo_red@... davemucha@...
[Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
> Yahoo! Groups Links
>
>
>
>
>