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Problem about Machine tool builder

Creator
Creator

hi,
I am a beginner in nx CAM.I want to move my head along the x an z Axis. So I designed a slide for each direction. When I tried to insert to the X and Z_AXIS the message " invalid geometry selection. It is already designed in Head" appears. It seems like you can insert a part only once.  I can’t put the slides in a chain because I want them to move separately.
Any I idea how to insert a part twice or how to fix the problem.
Thanks you.

I atteched a picture of a simplified model of my problem.

8 REPLIES

Re: Problem about Machine tool builder

Siemens Phenom Siemens Phenom
Siemens Phenom

Maybe what you are looking is not supported by the KIM model structure.

The rule is one geometry can be assign to one kinematics component only.

You can insert components without any geometry for additional axis.

But in your picture I do see the X slide and the Z slide on the same level. Is that what you like to achieve? The x axis is not dependet on z or the z axis is not dependent on x?

But the blue box should move in X and Z.

 

I wonder how that is in reality mounted. Two drives below the blue box and they are not dependent on each other?

 

 

 

 

 

 

Thomas Schulz
Siemens PLM
Manufacturing Engineering Software

Re: Problem about Machine tool builder

Creator
Creator

SpaceTom, thank you for your reply. I attached a picture od the original model. The X_slide  and Z_silde should move the head in the Z-X-Plane. I assigned the Z_slide to the Z_Axis and X_slide to the X_Axis. Now i want that the head to follow the movement of the slides. But it seems like i can assign the head to only one Axis. The X/Z Slide are driven by belts and move independently.

Re: Problem about Machine tool builder

Siemens Phenom Siemens Phenom
Siemens Phenom

Thanks for sharing that picture.

 

The implementation of the kinematics model is limited to open kinematic chains, so that what you shows is not supported. A workaround could be the attached the lower geometry box to either the X or the Z axis. The "compensation" then need to be implemented inside the driver. Not quite easy, but possible as I saw some year ago a solution with a tripod kinematics.

 

 

Thomas Schulz
Siemens PLM
Manufacturing Engineering Software

Re: Problem about Machine tool builder

Legend
Legend

Hello,

 

If you use an Pseudo axis as a X-Axis with an name U than you can 

overcame this problem.

I made a short video of an simple machine like your machine.

I use sim02 as an basic for this.

Re: Problem about Machine tool builder

Creator
Creator

Hello schauerm3,

I added a pseudo X_axis like you said. In my simulation the head is still moving in one direction. How do you set the channel configurations and kinematik chains to bond the head to both Axis ?


this is my tree for the machine tool builder :
machine_tool_builder_chain.PNG

I hope you can help me again.


Greetings,
Yannick

Re: Problem about Machine tool builder

Legend
Legend

Hello

 

I will send you my part with the machine kinematics.

You can see that I have an U axis which hold the geometrie and an X axis which 

I use only for kinematics.

 

Please make sure that all 2 axis are moved with the same X-Value

 

 

Re: Problem about Machine tool builder

Creator
Creator

hello schauerm3

thank you for sending your parts.
Sadly, I couldn't fix it. So I added your model to the library and simulated a simple machine code file. Even in your model the z_axis isn't following the head, too. I made a short video.
Do you have any idea what I did wrong?
Thank you for your help!
xy.PNG

 

Re: Problem about Machine tool builder

Legend
Legend

Have you adopt your CSE Simulation?

 

As I said before you should make sure that the U and V Axis are moved with the values that

are stored with the X-Axis.

 

You have to modify your MCF-File. Otherwise it does not work.

Learn online





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