Tool heights go nuts with fusion post

[Anonymous]

I have a new Centroid control on a older knee mill. I have read that fusion doesn't control heights in the g code. What I am dealing with is, the tool height offsets work fine when I use the conversational / canned cycles ( using multiple tools ), but not with fusion post. I did figure out to turn off the preload function in post because I don't have a tool changer, but I don't see anything to change tool heights. ( I do realize fusion doesn't control that, but.... ). Im not sure what to look for next. I don't feel its a Centroid problem, I think it is something im doing in fusion I just don't know what.

[euclidmandd]

What does the posted code look like? we have a haas and tormach so I'm not familiar with centroid but i posted some code using the centroid post in fusion and generally it the same as our code. There should be a line with G43 TXX, that activates the tool length offset for TXX using the tool length thats stored on the controller.

Have you looked through the code created thru conversational and see what the difference between it and fusions code is?

[engineguy]

@Anonymous

Using the Centroid PP there should be a line in the code like this :-

G43  Z** H**

This code tells the Centroid control to execute as follows

G43 = Tool Height Offset (Tells the Centroid Control to go into height offset mode)

Z**  = the height above the workpiece to place the tool

H** = the tool height to use from your offset library in your Centroid Control.

So the tool numbers in Fusion and their height offset numbers must match correctly (See image attached) and they must also match correctly the tool numbers and tool height offsets in your Centroid Control.

Attached is a simple 2D pocket program using 3 different tools numbered 1, 6 and 21, you will see from the attached G code file that was generated by the Centroid PP also attached that in the code below for tool number 1 at line N30 there is a matching H1 at line N60.

N30 T1 M6
N35 S4000 M3
N40 G55
N45 M8
N55 G0 X-5.027 Y-0.4
N60 G43 Z10. H1

Next tool is tool number 21 at line N1720 and there is a matching H21 at line N1750.

N1720 T21 M6
N1725 S4000 M3
N1730 G55
N1735 M8
N1745 G0 X22. Y-1.
N1750 G43 Z15. H21

Next tool is tool number 6 at line  N1875 and there is a matching H6 at line N1905.

N1875 T6 M6
(4.2mm SUS Drill)
N1880 S2000 M3
N1885 G55
N1890 M8
N1900 G0 X30. Y35.
N1905 G43 Z15. H6

Here is the image of the tool settings in Fusion,

as you can see from all the above everything MUST match up so in you Centroid Control your tool #1 height offset must be #1 as that is the height offset that the H1 will call out.

Full G code NC file attached also.

Hope this has been of some help for you

Regards

Rob

[euclidmandd]

Neglect this comment, I misread the previous response