Center Finder

CNC center finder using a simple cross hair tool probe and a Mach3 macro. For more information I posted a thread on the CNCZone - http://www.cnczone.com/forums/showthread.php?p=436238#post436238

Category:

Science & Technology

Tags:

• CNC
• Mill
• DIY

[battleminion]

Great device, do you use an special script in the mach 3 to make the movements automatic?

[EarlRausch]

@brenck

Thanks for the reply. I got it now,. There are so many things you can do with a CNC. I do have a Knee Mill (older Bridgeport) But the CNC can open up an entire new set of tools.

Thanks again.

[brenck]

@EarlRausch

This centering devices are the easiest thing to do, just wire tem at a limit terminal and tell the program what parallel port you have it wired in, after that you have the positive in or negative wired to the cup and the other wire you attach to the spindle or endmill, of coures you take it off after you found the center... If you look center finding for router on the web there are a lot of things

[EarlRausch]

@brenck

Hey Brenck Have you used one of those centering devices ? I am thinking that there must be some type of electronics's in that cup. ? Or are CNC machines sensitive enough to detect the slightest touch ? I am thinking of getting a CNC machine as I like the way they can cut a radius and other intricate cuts. Other viewers feel free to chime in.as well.

Oh yeah thanks for the information !

[brenck]

Thats great man, but don't use endmills to center X and Y, to be precise you should place a ground shaft with known diameter ( body of broken drill or endmill works ) and find the x and y position, then you place the endmill on the spindle and find your Z. Using endmill to find x and y you can get inaccurate measures because it will vary according to the position that the endmill is on the collet and to endmill number of teeth

[wolfie83]

fantastic! alot easier then other methods of finding your values.

[Digadogup]

the copper thing is just to find x,y,z coordinates if you notice the drill moves 3 times its getting positions and finding the mid point and thats how it works .

[bigdog0800]

I dont see the point or how that with the part loose you can find an edge.then move the part how does that worK?

[27simber]

that is cool how much

[shiakue666]

You are the MAN