Helical Arc Structure

[amin13751387]

I know helical arc structure for Fanuc Post processor;

 X...Y...Z...R

Does any body know the structure for Heidenhain (TNC 426-430)?

Thanks in advance.

[kevin.hammond3WX4X]

Check out 187/530

[amin13751387]

Dear  kevin.hammond

I am trying to arrange arbitrary arc (xyz) in Heidenhain post processor and not be successful yet.

It seems to be in polar format. any help would be greatly appreciated.

[kevin.hammond3WX4X]

Here is an excerpt from one of our heidenhain posts.

Perhaps if you add some more detail, such as a project and the posted code explaining what you think you need, you'll find the guys on here better able to understand your needs.

[amin13751387]

thanks for your advise

here is a program I tested in CIMCO (Heidenhain) and outputs exact desired result for 3d arc movement( here is a helix).

306 L M08
307 L Z+9.5 F MAX
308 L Z+7.6 F MAX
309 L X-5.24 F300 
310 CC X-5. Y+0
311 CP IPA+360. IZ-.1001 DR+
312 L X-5.24 Y+0 Z+7.4999
313 CC X-5. Y+0
314 CP IPA+3420. IZ-.95 DR+
315 L X-4.76 Y+0 Z+6.5499
316 CC X-5. Y+0
317 CP IPA+179.64 IZ-.0499 DR+
318 L X-5.24 Y+.0015 Z+6.5
319 CC X-5. Y+0
320 CP IPA+360. IZ+0 DR+
321 L X-5.24 Y+.0015 Z+6.5
322 L X-5. Y+0
323 L Z+7.6 R0 F MAX
324 L Z+9.5 R0 F MAX
(Also, by Studying the Heidenhain manual) the gcode should be in polar format and Incremental. in addition, the amount of angle should be less than a certain amount and repeat again if needed. I want to add the structure in the 

" Circular Move Arbitrary" of post processor, which indeed my knowledge is not sufficient to do it. pardon me if my english is not good. hoop you understand my mean.

[kevin.hammond3WX4X]

I have had a play with trying to achieve what you think you want.

Please find attached my test project, with 2 versions of the same toolpath one with points set to default the other with 'fit arcs' selected.

Modified post is inside the project folder.

I have modified a copy of the Generic Heidenhain post for you to test, at your own risk, ensure it meets your needs before attempting production.

The fit arcs appears to give you what you need, review it carefully

Notes:

Generic posts are here

C:\Users\Public\Documents\Autodesk\Manufacturing Post Processor Utility 2025\Generic

fit arcs selected

I hope this helps.

I will say that on our older Heidenhain machines that using programs with fit arcs makes the program samller and easier to read, but it slows the machine processor down as it then has to plot the arcs. Larger point to point programs tend to run smoother as machine has less to think about.

Good luck, Kevin

[amin13751387]

Many Thanks for your help and time.

I will see it tonight and inform you asap.

[amin13751387]

Dear Kevin

Unfortunately Controller didnt accept this method and gets error.

I think we have to find a solution according to what manual says, Incremental angle and Z :

CP IPA+179.64 IZ-.0499 DR+

many thanks to you.

[hrh46]

Also I found attached subject. maybe useful for post modifying.