Modify Fanuc post for 4th axis

[Obadare]

Hi all,

I need some help on modifying the Fanuc a axis inverse time post to remove the feed rate on each line as my machine doesn't have inverse time.

I tried using standard milling Fanuc post but when it outputs the Y axis is also there, only only want X and C axis lines.

I can change the A axis to C axis for my rotary axis, just have to remove all these feed rates

[andrea.amilo]

Hello @Obadare ,

I think you could try to modify the value of 'useInverseTimeFeed' variable in your postprocessor, at line 2236.

You need to set it to  false  as highlighted below:

Please test it carefully and let me know.

[Obadare]

ok, I changed that, but still has feed on every line but the feed looks better. Would be nice to only have only one feed rate as this program is for engraving test around a bar.

[serge.quiblier]

Hi @Obadare 

You may also need to change the line at the begin of onOpen

var aAxis = createAxis({coordinate:0, table:true, axis:[(getProperty("makeAAxisOtherWay") ? -1 : 1) * -1, 0, 0], cyclic:true, preference:1});

and change it to

var aAxis = createAxis({coordinate:0, table:true, axis:[(getProperty("makeAAxisOtherWay") ? -1 : 1) * -1, 0, 0], cyclic:true, preference:1, tcp:false}); //QS

Regards

[andrea.amilo]

Hello @Obadare ,

your postprocessor is developed with multiaxis feedrates to manage the feed variations on the 4th rotary axes.

You can try to write the programmed feedrate value in mm/min, by commenting ( // ) line 2200 and adding the new line 2201:

Please test carefully that your machine would be able to properly mill in 4 axis with a Feedrate defined in mm/min.

Let me know.

[Obadare · Accepted solution]

Yep that did the trick, I will just have to workout what the best feed rate is for given diameter, just means other axis's will be slow or fast. not ideal but since my crap Mirl control doesn't have inverse time feed unfortunately this will have to do. 

[andrea.amilo · Accepted solution]

Hi @Obadare ,

If my post answers your question, please click the "Accept Solution" button.
This helps everyone find answers more quickly. Thanks.

[engineer78QJ94]

Could you please share the Fanuc 4-axis post? I would really appreciate it.