Heidenhain Program Restart iTNC 530

Heidenhain Program Restart iTNC 530

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Heidenhain Program Restart. Now you must have heard me banging on about program restart on certain machine controls.

On some it’s just non existent the best you can do is move to a tool change and start there. Oh and pray to any god you may believe in.

On a Fanuc control program restart it’s a rare option, and no fucker knows how to use it anyway, except me so click on this link.

Work Around

Without it, if you really know what you are doing you can restart programs.

This said you must have a real good knowledge of programming and modal G Codes.

What you can do is read the tool change line (M6 T06) then let the machine read the G43 line to take in the tool offset. Now you can then go on to read the canned cycle. From this point you can move on to any position and it will carry on (allegedly).

This is Fuckin dodgy. It’s a bit like having cataract surgery whilst driving a Sherman tank. You definitely need to be over 21 and not of a nervous disposition.

Chimpanzee baby

Anyway it does work, honestly, just be sure there is a full moon and you turn the control panel to face Mecca.

Joking aside make sure you understand the modal information on your control panel which you should do anyway.

What’s Modal Information?

Well it’s that screen you’ve been ignoring for years.

Please take your time and have rapid at minus 1000,000%. Be in single block and read this.

Remember if you crash this beast I will say I never met you and I definitely didn’t write this article, which will suddenly disappear into the ether at the slightest sniff of a lawsuit.

You know that screen you cant even be arsed to look at?

Well actually it contains some very useful shit so pay attention you naughty boy.

So this means you know and understand the following.

  • Is the machine in absolute or incremental?
  • What work offset is active?
  • Is the tool offset active and if so which one?
  • Is the machine still in compensation G41 G42?
  • Is the plane selection correct, usually XY G17?
  • Is the machine in feed per rev or feed per minute?
  • What speeds and feeds are active?
  • Is the machine in rapid or feed G0 or G1?
  • By the way if you come to me for some training I can impart all this knowledge on you.
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Heidenhain Full Circle Q Def

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Heidenhain Work Offsets Explained

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Category : Heidenhain

CNC Training Call David: 07834 858 407

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Heidenhain Work Offsets Explained

Heidenhain Work Offsets, traditionally the Heidenhain coordinate system was kept very simple. It was like the “Click and Collect” of the CNC World 20 years ahead of its time.

Heidenhain Work Offsets

Anyway all you did was go to the place where you wanted as your offset and zeroed the display.

That was the datum and when you had a new part you just zeroed it again.

WARNING THIS POST CONTAINS STRONG LANGUAGE AND NUDITY FROM THE OUTSET

Easy….

Simple as Jack Shit.

It even had a self destruct button.

Heidenhain Work Offsets

With this button you could really easily delete your program by accident.

I vividly remember having to lie and cheat my way out of that one.

Fortunately they moved it, well it’s gone anyway.

Now this button Wow….. Don’t even get me started. It was still there all those years ago.

Heidenhain Work Offsets

Watch this if you can’t stand the intrigue.

I Digress

Back to Heidenhain Work Offsets

Nowadays everything is so complicated. I still can’t work the fuckin TV remote control and my central heating comes on in the middle of the night for no reason.

I just put the heating full up all the time now, admittedly the kids have to stay outside in the summer but I like to keep things simple.

Some People Are Never Satisfied

Not happy with one work offset everyone wanted six. Then it went crazy with extended work offsets some of you greedy bastards (and you know who you are) have 99. Come on that’s just CNC debauchery.

Limitations with old Heidenhain Work Offsets

Joking aside it did have its limitations. Anyway now you can have as many as you want.

As we all know everything nowadays needs to be backwardly compatible. (I don’t actually know what that means, I heard a bloke say it in the pub)

Anyway the new machines have to still do what the old ones did.

From this screen you can make an offset active.

Once this offset is active any subsequent position move will be in this offset.

In your program you need one of these.

The above would call Datum 3

Above would call Datum 9

Heidenhain Work Offsets

This would take it back to Datun 0

Come on surely you get it now.

Heidenhain Work Offsets

The number (in this case zero) is the datum you wish to call. This would call the standard datum (can’t miss it it’s top of the list and it’s red)

Don’t forget this is modal so once selected the datum will be used all the time until you change it.

Now you have started using these datum you must have one at the beginning of each program. It’s a bit like taking out a mortgage (you can’t escape).

Obviously if you make it active in the datum table and then call a program. If that program has no datum call then it will use whatever’s there.

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Full Circle Heidenhain (Macro Program)

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Category : Heidenhain

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Macro to program a Full Circle Heidenhain

Heidenhain has its own form of parametric programming it uses Q values sometimes called Q DEF.

Er what you on about now David? You ask.

Ok sorry to shroud you in a cocoon of total bullshit.

It’s like Macro on a Fanuc Control. What you do is you program a circle and instead of putting numbers for the X values n stuff you put a Q number like Q1 or Q10

Then you tell it what the Q values are. So instead of X-20. you could have X+Q10

If you then went on to define Q10 as -20 then X would be X-20.

All will be revealed.

Take a look at this code.

Full Circle Heidenhain

This code will mill a full circle and because it’s in incremental (note the I in front of the X value) you can dump one anywhere. By that I mean you can mill one of these circles anywhere not take a shit anywhere.

Full Circle Heidenhain

Now watch it in action.

This is great but it is not easy to control. If we wanted a different diameter there are quite a few figures to change. If you are a bit of a prick like me then you’d probably get it wrong and scrap the part.

Q DEF To The Rescue Full Circle Heidenhain

Using Q def is really easy. You could start by using it to change the feedrate. Look at the code now.

Full Circle Heidenhain

Line 7 and line 17 define Q1 as two different values.Full Circle Heidenhain

Full Circle Heidenhain

So when each one calls LBL 1 the feedrate in line 25 will change to whatever value is in Q1.

Full Circle Heidenhain

Clever eh…..

But that’s not all.

You can have loads of Q values whopeeee.

Stick Around For The Exciting Stuff

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Onsite Training Retro CNC Boko In Scotland

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Category : Heidenhain News

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Onsite Training In Scotland

I was recently allowed into Scotland. My visit was to Abacus Valves in Glasgow, onsite training on a Boko with a retro fitted Heidenhain control.

It is rare for me to get repeat business but this just proves there is one customer out there who actually likes me. No law suites, no fights on the car park and no refund issued.

For those who don’t get the irony in my articles and might be getting a bit nervous right now, here are my ratings on google

I got the pleasure of working on this machine.

Onsite training with no manuals at all except for a generic Heidenhain 426 manual. The company that built this thing, well retro fitted the CNC bit, went out of business when to be sick meant to evacuate the contents of ones stomach and “Jim’ll Fix It” was a popular children’s TV show.

Onsite Training

Programming it with Heidenhain is no problem. Minor details like switching it on or moving it around would be a bit like driving a Sherman tank blindfold with your scrotum sack cable tied to the steering wheel. (Do tanks have steering wheels??)

It’s a Boko vertical machine that has a retro Heidenhain 426 CB control.

It’s used to make large valve bodies like this. To be honest I can’t remember when I had so much fun and kept my clothes on. Please don’t dwell too much on that thought, this is a septuagenarian speaking.

Onsite Training

These guys were an absolute pleasure to work with constantly making me cups of coffee and offering tasty snacks like this.

Children be warned “do not take pies from strange men especially this one”

I’ve got to watch what I say here cos these guys constantly take the piss out of not just one another, but include me. The first day of training everyone is always on their best behaviour. By the third day one of us, often me manages to lower the tone and the banta begins.

I think the above treat is some kind of Glaswegian delicacy (and there a many)

It’s actually a pie between two haves of a bread batch, mmmm.

I didn’t eat one to be honest but only because at the moment I’m on a strict diet, I’ll spare you the details. I recon one bite of this beast would constitute the average male calorie intake for a year.

Anyway it’s lovely to be offered, last time it was tattie scones

and these really are nice.

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