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Denford Orac - the next step

I got my Denford home and started to find out what it can do. I wa

immediately impressed by the ease that it can cut metal compared to m mini lathe but not having manual controls is a problem. I tried cuttin using the keyboard but the slow speed for the X and Z axis is too fas for most stuff.

I intend to upgrade the controls to be PC based using AWEM's desig minus the tool turret but for now I am finding out how to use the Ora CNC stuff.

I tried a simple program but I can't quite work out how best to set th machine origin. The machine has a floating origin which is supposed t be at the face of the workpeice on the Z axis. Tool number zero seem to be the reference which can be set but taking a facing cut whic gives Z=0. X is found by taking a light cut then measuring and enterin the diameter.

This is fine for tool zero but how do you set other tools up Presumably you don't take any cuts when setting up the other tools. A I missing something here.

Archi

-- amcne

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cutting

seems

entering

Reply to
Andrew Mawson

But don't you have the same problem with other controllers

-- amcne

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amcnee

supposed

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Andrew Mawson

I still can't get my head round the accurate setting for additiona

tools. I can see how by taking light cuts in both x and z directio gives an accurate position for that tool. The difficulty I have is i setting up additional tools without talking further cuts. Jogging th tools in so they just touch is the problem. It is not very easy t judge this by eye. Is it done using some sort of distance piece o feeler guage? I saw a mention in the Turbocad docs for a referenc gauge. What does one look like?

Archi

-- amcne

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Andrew Mawson

We were taught to use cigarette papers - you take one of Rizzla's finest and hold it between the tool and the work and wind in (in your case jog in) the slide. When the paper just catches between tool and work you have about another thou to go (for blue Rizzlas it's about half a thou).

Cakk me sad, but I've just bought a brass Rizzla holder to stick to my Boxford ;-)

HTH,

Reply to
Boo

Go to the mach 3 turn manual

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And read section 7.5.3

This applies to many cnc lathes.

-- Regards,

John Stevenson Nottingham, England.

Visit the new Model Engineering adverts page at:-

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John Stevenson

Thanks Guys.

The Mach3 document looks very good. It will take me a while to diges it all though.

Archi

-- amcne

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