G73/83 Reducing peck

[mattpatt]

Hi all,

Just to give you some info: Fadal 3016 with Fanuc 0i control.

When using either G73 or G83 all works fine, execpt that I must use a Q value to state depth of each peck. Not a problem, but I want to be able to change the peck through the cycle, such as initial peck 10mm, reducing by 1mm per peck to a final peck of 5mm. According to the Fadal manual all should be ok by changing the Q to I, J and K values, but if I put this code in I get a confused motion on the machine. It goes to the R plane (as I specify), then drills the value set in the parameters 5114 or 5115 depending on if I'm using G73 or G83.

FYI parameter 5101: 11010001 Not sure if that's of any use though!

Having just read through the Fanuc manual, I don't know if I can even use this code, as there's plenty of reference to the Q peck depth, but not a thing about I, J and K.

If anyone can help I'd appreciate it.

Matt.

[dcoupar]

As far as I know, there isn't a reducing peck cycle on a Fanuc.

[stevo1]

Fanuc does not have a cycle like this. I have only heard of this on the Haas machines. If you want to do this you have to either write the code long hand or write a macro to acheive this.

Stevo

[mattpatt]

Thanks for the help. It's a shame.

I'd better start learning to write macros!

[surajsharma]

Hi I am suraj i lost my parameter cnc takisawa tc2 with fanuc control ot plz. help me

[stevo1]

Originally Posted by surajsharma Hi I am suraj i lost my parameter cnc takisawa tc2 with fanuc control ot plz. help me

surajsharma,

First you should probably post this in a new thread. People are not going to be looking to help you with lost parameters with a thread title of G73/G83 peck drilling cycle.

As for your parameters you should contact the MTB they should have a copy or backup of your parameters. Check your power cabinet. The MTB usually puts a hard copy of the parameters and options in there for this reason. The only other option you have is if someone has the same make and model machine that you could get a copy from. That is another reason it will help to start a new thread with a new title.

Stevo

[tobyaxis]

Originally Posted by stevo1 Fanuc does not have a cycle like this. I have only heard of this on the Haas machines. If you want to do this you have to either write the code long hand or write a macro to acheive this. Stevo

If you don't know how to write macros you can write a sub to do it. I have had to do this a few times for really deep holes. I used the 3-2-1 method. In other words 3x drill dia -2x drill dia- one x drill dai until the depth is achieved.

[mattpatt]

Thanks for all your answers.

I think that writing the macro to do this is probably the best way.

So all I need to do now is learn to write macros.......

Any advice greatly received

Matt.

That's a bit lazy really, as I know there's a bunch of macro advice on this forum so I should do a search.

[tobyaxis]

Originally Posted by mattpatt Thanks for all your answers. I think that writing the macro to do this is probably the best way. So all I need to do now is learn to write macros....... Any advice greatly received Matt. That's a bit lazy really, as I know there's a bunch of macro advice on this forum so I should do a search.

There are books on Macros as well as helpful software.

Macro B seems to be popular and NC Plot Software to prove it out.

[mattpatt]

Actually hovering over the 'buy it now' button for Peter Smid's book.

[tobyaxis]

Originally Posted by mattpatt Actually hovering over the 'buy it now' button for Peter Smid's book.

You might want to ask around a little more. I know his books are recommended by many but there might be something better.

Are you sure your machine will use Macro B or is it Macro A?

[mattpatt]

Thanks for your concern. I have Macro B