I have been tasked with creating cabling harnesses for a next generation space telescope for NASA at Goddard Space Flight Center. Our traditional method of harness manufacture is to build a mock up structure, run all the cables on the mock up, and then transfer the harnessing to the actual spacecraft. With this method we have to do an immense amount of guesswork and add in a lot of extra room to make sure that everything will fit.
As of right now there are many many areas for improvement within the cabling module and Creo itself that I would like to submit for submission.
There is currently no method for making changes to a cable short of deleting it and rerouting it manually. NOTHING updates parametrically. This is a massive departure from the way that Creo works and markets itself. Please change this.
If I run a cable and then have to change the spool or diameter - Delete and Rerun
If I run a cable and need to change the end location - Delete and Rerun
If the Connector moves, the cable will not reroute properly - It will keep the old route and then "add" another section from the old location to the new location - Delete and Rerun
I would also like to be able to calculate the mass of a cable.
In the photos attached you will see that I created a straight 1,000 mm cable run in order to test the mass calculating capabilits of Creo, I then calculated using Excel what the mass of the cable should be if density is calculated by unit length or unit volume. I couldn’t obtain results that are in line with what Creo provides.
I then looked around and found different values for density that were reported by Creo, both in the cabling module and the standard module. I went back and calculated the mass of the cable with the many densities that I found within the module. I couldn’t get any results that match my own calculations.
Why are there so many different densities? Shouldn’t it be something that is set once?
Is mass something that Creo can actually calculate? Even in the standard Creo module I oftentimes have to “trick” Creo into giving me a correct mass or have to calculate it myself. I’ve spoken with many designers here and have been told to not have too much confidence in Creo’s mass reporting function and to always double check or calculate the results yourself.
Is there anyone at PTC that knows the cabling module that I can speak with?
I have provided video to PTC showing them these issues. Please see PTC Technical Support Case #14610212