Author Topic: DKP-400 turntable doesn't rotate with Fusion 360 commands  (Read 394 times)

DKP-400 turntable doesn't rotate with Fusion 360 commands
« on: January 26, 2021, 07:16:49 PM »
Hello fellow robot enthusiasts,

I am trying to create a grasshopper definition that takes in rotary machining NC from Fusion 360 and uses a KR-60 to machine out the object on a DKP-400 rotary table. I have been successful with importing the Fusion commands and passing them to the core module, however, the turntable doesn't rotate at all like I would expect it to. It moves fine when I use linear commands that did not come from Fusion.

Is there a setting or something obvious I'm missing to achieve the typical rotary machining pattern where the tool remains in a relatively fixed position while the turntable spins around?

I have attached the .gh file and the XML from Fusion 360

-Jonathan

Johannes @ Robots in Architecture

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Re: DKP-400 turntable doesn't rotate with Fusion 360 commands
« Reply #1 on: January 27, 2021, 09:43:05 AM »
Hello Jonathan,

We only used Fusion with the 5-axis tool head, am I right to assume that you used a machine setup that implements a rotary base?
I will need to look into that, the problem is that we cannot just directly map those values because we need to match the rotary axis of the Fusion machine-model with the - probably offset - DKP-400's. Shouldn't be a huge issue, though.
So far we only used the turntable in an indexed way, setting a different E1 for each job to facilitate reachability.

Best,
Johannes

Re: DKP-400 turntable doesn't rotate with Fusion 360 commands
« Reply #2 on: January 27, 2021, 03:10:44 PM »
Johannes,

Thank you for your reply. You are correct that our setup has an arm and a DKP-400.  The ultimate dream would be to be able to perform something similar to the setup at the end of Singline's rotary table tutorial (https://youtu.be/LImgOPV1tgk?t=692), where the turntable spins and the robot stays in a similar orientation.

Anything you can do to help is greatly appreciated!

Johannes @ Robots in Architecture

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Re: DKP-400 turntable doesn't rotate with Fusion 360 commands
« Reply #3 on: January 27, 2021, 03:13:21 PM »
Hello Jonathan,

So you would like to do that from Fusion? Do you already have a file that works like that? Then I can look into it. We can generate the orientation of the external axis after the toolpath import, if necessary.

Best,
Johannes

Re: DKP-400 turntable doesn't rotate with Fusion 360 commands
« Reply #4 on: January 27, 2021, 03:24:10 PM »
Johannes,

Yes, the attached XML was made with the PRC post processor in Fusion and should work in the way I am intending (attached below). I used the multi-axis rotary operation in Fusion, which I believe is the correct one to use in this situation (although anyone is free to chime in if this is wrong or there is some setting within that operation I could be overlooking)

Thank you Johannes!

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Re: DKP-400 turntable doesn't rotate with Fusion 360 commands
« Reply #5 on: January 28, 2021, 11:00:48 AM »
Hello Jonathan,

Can you please send me your Fusion file via eMail to johannes@robotsinarchitecture.org?
I think it's best if I can provide you with a custom example, rather than making up something generic.

Thanks!
Johannes

Re: DKP-400 turntable doesn't rotate with Fusion 360 commands
« Reply #6 on: January 28, 2021, 04:35:16 PM »
Johannes,
I sent you the email with my f3d file.

Thank you

Johannes @ Robots in Architecture

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Re: DKP-400 turntable doesn't rotate with Fusion 360 commands
« Reply #7 on: January 28, 2021, 04:48:04 PM »
Got it, will get back to you tomorrow!
Best,
Johannes