G83 Lathe Canned Cycle

[info99H4D]

The standard HAAS ST20 post won't post I J & K values when a reduced pecking depth is specified in Fusion 360.  As a workaround I was advised to modify the post and this seemed to work quite well although for some reason it no longer seems to be working.  Please see a screenshot of the post below.  Does anyone have any suggestions?  I use this feature quite a lot and would be very grateful for a solution!  (post attached)

[boopathi.sivakumar]

Hi @info99H4D 

I cannot able to replicate the issue as you mentioned, If you are using deep drilling cycle, it should work fine. Could you please attach the F3d file. So that i can have a look into it

File>Export>.F3d
save the file and reattach the file to this thread.

[info99H4D]

Many thanks for your reply.  Please see the f3d file attached.  As you can see from the 10.2 mm drilling operation I have selected the deep drilling cycle with a 12 mm initial peck, 2 mm reduction and 2 mm min pecking depth.  I would like this to post as G83 X0 Z-47.112 R0.087 I12 J2 K2 F0.2 but instead it is posting G83 X0 Z-47.112 R0.087 Q12 F0.2.

[boopathi.sivakumar · Accepted solution]

Yes!! the generic post for Lathe machine prefers single Q peck value, In some machines IJK causes error, thats why it is using Q by default, But as you said the modified post which you have attached works perfectly for me. I got the expected output as 

G83 X0. Z-47.112 R0.087 I12. J2. K2. F0.2 Could you please check that you are using the modified post not the generic post.

[info99H4D]

Many thanks for your reply.

It seems as though that was the issue.  I had modified my machine in my machine library to use the new post but for some reason looking at the setup the machine was using the original unmodified post.  I suspect that when creating the setup I had another document open that was originally created before the post was modified allowing me to select the machine with the old post.

Thanks again!

[ed]

As of post version 43861, the "chip breaking" drill cycle still outputs a G81 not the correct G83 so it does full retracts every time.  Can we please get this fixed without having to manually modify the post.