Heidenhain TNC426 post processor

[bstall]

Does anyone have or use Mastercam with a Heidenhain TNC 426 controller for high speed mach.? Have a new mach. and I'm not sure wether to go conversational or ISO programming.

[JoeyW]

We have three older machines with really old Heidenhan controllers (H131, H155, H355 respectivly). At first we allowed the operators to program on the machine using Heidenhan's conversational programming, since it was very easy to learn. Years later as we got into more complex work, we started using Mastercam to program for these machines, so a post was created for us.

However, what we found is that when we added newer machines to the shop ( with Fanuc and Fanuc based controllers) the operators got confused with the who different styles of code. Its so bad that we've been forced to divide our operators into two groups... those that work only on Heidenhain machines and those that work only on ISO programmed machines.

 

For simplicity on the shop floor, I feel that one standard programming format is the best. I sure wiched we used ISO programming for our Heidenhain's to begin with.

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No guts... No Glory

[JNielsen]

We have two high speed machines with Heidenhain 426 controllers,(Deckel/Maho) and two more machines with Heidenhain controllers (H150, H360) all the machines are progammed in Heidenhain, and it works fine.

[Lucky]

We have a Mikron VCP600 with Heidenhain TNC 426 and output Heidenhain code (.H files) from Mastercam. We are high speed milling graphite and hardened steel with a 42,000 rpm spindle.

I modified the generic Heidenhain post (mpheid.pst) to suit our needs. Fixed some bugs related to arc output. The post determines if we are cutting graphite or steel based on the tool number and outputs the appropriate codes (dust extraction and airblast for graphite and oil mist and oil mist extraction for hard die milling).

Our other mills use ISO code. Our operators have had no trouble adapting to Heidenhain. I have been told but not verified that Heidenhain code is processed faster by the control. This would be a consideration in high speed cutting.

[Christian Raebild]

For high speed cutting, as well as for 3D surfaces, you should use 'cycle 32' if using Heidenhain code. This makes the control generate a third order polynomial curve (a nice smooth curve for those who don't understand that mathematical term), passing the programmed points within a specified tolerance.

By using cycle 32 on the TNC 426 control, you will machine your parts faster, get a better surface finish, and reduce tool wear.

Please check the manual for the TNC 426 control for further specifics.

[GREG]

Iso all they way.

We still have problems with Canned cycles but so far thats all.

We have 3 DMU 50 E machines and are trying to justify a bigger one.

If you like I"ll e-mail our post.

[email protected]