Category : Fanuc Mill Fanuc Turn Haas Mill Haas Turn
O0001(G28 Example)
(PROGRAMMED BY ANDY MURRAY)
G21 G90 G40
T01 M06(20MM ENDMILL)
G90 G0 G54 X200. Y0 S1500 M3
G43 Z3. H1 M8
G81 G98 Z-5. R1. F100.
X100.
X50.
G0 X25. (No hole drilled here cycle would be cancelled)
G80 (This also cancels the cycle)
Category : Fanuc Mill Fanuc Turn Haas Mill Haas Turn Mazak Mill Mazak Turn
G28 is used to send a machine to Zero return for a tool change or at the end of a program.
G28 G91 Z0 (Z axis moves up to tool-change)
G28 G91 X0 Y0 Z0 (All three axis move to their respective zero return positions)
I know some of you don’t like three axis moves like the one above. If it don’t hit anything it’s just fine “Get Over It”
Below are the two ways of doing this.
G28 actually means return to the zero point via a reference point.
If you programmed
G28 G90 Z0 or you forgot the G91 this means return to zero point via a reference point. The reference point is Z0 so the spindle would rapid to Z0 (Bang) and then move up to reference return point.
That’s why if you have single block on you will notice this is two presses of the cycle start (two blocks).
Therefore if we use G28 G91 Z0 the first press will take it to the reference point which is incrementally zero form where you are (no move) the second press move to zero (no collision)
Some older machines won’t have this so try not to get over excited.
G53 uses your absolute machine position (Machine) this means all moves are from home position and are not affected by datums (G54 etc) or tool length offsets.
It is one of the very few non modal commands so you can’t write
G53 Z0
X0 Y0 (this will use works offset not G53)
You need to write
G53 Z0
G53 X0 Y0
G28 uses G91 incremental so you must remember to write G90 (absolute) for your next command. In fact many a collision is caused by misuse of G28.
G53 is best if you have it just remember it is non modal.
So you write it in each time you need it.
Note:
Some machines have return to tool change built into the tool change line.
T01 M6
On a Haas machine for example where the return command is built in you would not need to send the Z axis home.
I recommend that you always put one in.
G53 Z0
T01 M6
If you are in single block you can stop before the tool-change if you wish.
Also I know someone who got into the habit of doing this and crashed a Fanuc Controlled machine that needed the command. (If you read this you know who you are)
G53 has another really good use and that is if you want the machine table (on a vertical machining centre) to move to a standard position to do things like changing the parts. It will always put the table in the same place regardless of work offset.
Bare in mind that if you put a position in that is relative to your work offset and not use G53 then the next time you set the fixture up your machine may over-travel because the fixture is in a different place.
If you read this article you will see how it could be used to set a vice in a known position regardless of datum.
Remember G53 is a position from the machine zero, it does not take into account the tool length offset or the datum. The other important thing is that it is non modal. That means you will need it on every line that you wish to use it for.
This machine has the Tosnuc 888 control.
For this control use G73 instead of G53.
If you have any questions about G28 G53 Zero Return or you are affected or have been affected by any of the issues in this post please contact me 07834 858 407
Please contact me if you require:
Classroom programmer training.
CNC Training on all controls and machines.
Mazak Training Fanuc Training
Don’t forget we offer training on all types of Mazak Machines and all Fanuc Controls 6m to 31i Oi old to young.
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CNC Programming and Training on all controls and machines.
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Just an address will do.
When you work on a machine day after day or you work on the same CAD system. I believe that every now and then you need to look at what you are doing and take stock. You know like when you can’t quite get something to work correctly and you find a way to frig it.
Well done you got yourself out of a mess. But hang on a minute that was two years ago. So when you gonna take the time to find out what was the correct way?
Sometimes when I am training people I feel like I am being really fussy when I pick them up on minor annoying things they do when operating a machine. By the way I don’t mean things like scratching your bollocks.
For example leading zeros (don’t get me going on that).
Right, your on a Fanuc or Haas control and you want to call program one and you type in O0001 and press search or lower cursor.
Just type in O1 that’s all you need. Honestly it drives me bloody bonkers.
Here is an idea just spend one day sorting all these little things out. I tell you now the saving over a year, once you force yourself to do everything the quick way, is massive and it’s there forever.
Check out the shortcut keys on your favorite bit of software and use em. It’s amazing once you get a grip on it.
How do you copy and paste? You can let me know on that one.
Just an address will do when you are typing code into a Haas control. You don’t need to type the zero. How cool is that?
Impress your mates with this one, or better still the boss (you may get a raise……. not)
Type in G X Y and press input. (This could be in MDI or EDIT mode)
Yes that’s all you need.
It will go in as G00 X0 Y0
These clever Americans can just guess what you are trying to do.
So much easier, one day all controls will be this good.
Please contact me if you require:
Classroom programmer training.
CNC Training on all controls and machines.
Mazak Training Fanuc Training
Don’t forget we offer training on all types of Mazak Machines and all Fanuc Controls 6m to 31i Oi old to young.
Category : Macro
Duration: 2 days.
Date: See Dates
Times: Start 9.30am Finish 4.00pm
Location: Barwell Leicestershire England
Includes lunch, coffee and tea, oh and biscuits too.
£600 for two days
CNC Macro Programming Training Courses
If you want to learn how to use
Most ISO type controls that have Macro use a very similar system.
This course covers Lathes and Machining Centres with on-machine practical examples .
Follow the link to learn some more about Macro.
Heidenhain Q parameter programming is very similar to Macro CNC Programming for Haas and Fanuc.
Once you have grasped the concept of parametric programming you will find Heidenhain Q parameter programming easy to figure out.
Siemens uses R parameters instead of #
Make sure you have the Macro option on your control, its a real disappointment when you get all excited about this only to find you don’t have the option. Remember if you have a touch probe you will almost definitely have Macro installed on your machine.
Go into MDI key in #100=10. or something similar. Press cycle start.
If you have it you will get no alarm.
Good news is you can buy the option, it don’t come cheap so sit the boss down and make him a cup of tea before you ask.
This is where CNC Programming gets really exciting, welcome to the turbo charged world of Macro Programming for Haas and Fanuc type controls. There is so much exciting shit you can do with this I really don’t know where to start.
Yes you can create your own fanuc cnc custom macros.
Yes you always dreamed of having your own personal G code, you can’t call it like Bill’s G code or something but you may have G271 or something which is personal to you.
Say you wanted a drilling cycle that changed speed half way down a hole or some daft thing well now you can do it.
Imagine you had a bunch of parts that were similar, maybe the same holes but in different positions or a similar shape maybe.
Create fanuc cnc custom macros to make families of parts.
You could write a parametric (Macro) program that would be completely adjustable and would make them all instead of having to keep writing similar programs.
You can build these programs and add to them as you get better and better and your ideas flood in.
I always say to students to start simple and build on your experience. Just using Macro in it’s simplest form will inspire you to go on to do greater things.
You can get almost any information you want from the machine.
You can even modify this information and send it back.
I’m getting really excited just telling you this. It means you can add all sorts of functionality to your machine that you didn’t have before.
Contact me if you are interested in Classroom Training 07834 858 407
Don’t forget to watch my Tutorial Videos on YouTube
Edgecam call 07834 858 407
We offer training on all types of CNC Machines and controls check em out.
Classroom programmer training.
CNC Programming and Training on all controls and machines.
Mazak Training Fanuc Training
Don’t forget we offer training on all types of Mazak Machines and all Fanuc Controls 6m to 31i Oi old to young.
