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July 19, 2016
EnterprisePlatformShipbuilding

CAR-W SSI Wolf Robotics

Last week SSI and Wolf Robotics demonstrated some co-development which automatically drove a fully autonomous welding robot to weld several ship panels. This was part of an NSRP CAR-W project with US shipyards.

image2
WeldCAR-W4

The workflow starts in ShipConstructor by automatically identifying the welds in the ShipConstructor 3D CAD model. The ShipConstructor user then uses an interactive 3D visual drawing to configure the weld properties such as the weld standard and includes weld breaks, weld pitch, etc. The weld information and various other relevant data (e.g. geometry of panel to be welded) is exported to Wolf Robotics via SSI’s EnterprisePlatform. The operator on the shop floor reads the files generated in Robot Studio which runs a path planning algorithm that evaluates several collision avoidance scenarios. When the operator is ready they click “Go.” This is where the magic happens because the robot automatically sizes up the panel with several touch sensing actions and then welds the panel.

WeldCAR-W3

Video Demonstration

If you cannot view videos on YouTube click here.


Shipbuilding Automation

Automation of the production floor machines is really the future and we are seeing more and more initiatives to drive machines on the shop floor via SSI EnterprisePlatform. The work we did on this project is probably the most complex we have done. For those non-shipbuilders reading this, it might not be apparent in the video, but virtually every single panel welded in a ship is unique. In shipbuilding we do not have the luxury of having a standard part/assembly. That means that we cannot just program the robot once and have it repeat itself; we need to support the most complex scenario of producing different welds, using different paths, generating a totally different physical structure. That is why what you are seeing is extremely awesome.

I was not able to attend the demonstration, unfortunately; however, the video below shows what was demonstrated. It was a video that was recorded several weeks ago during the process of validating what we will be demonstrating. It is quite remarkable to watch especially if you know what is involved in the alternative manual process.

This was just the first live demonstration with more to come in future phases. In the future phase we are planning to complete a more complex sub assembly from the Bollinger’s FRC design.


Thanks to a Great Team

I would like to say thanks to the Wolf Robotics, EWI and Bollinger team as they were a pleasure to work with and we look forward to building on what we have. I’d also like to thank the SSI staff. The people working on this project were:

Dan Spieker– Wolf Robotics

Jeff Penoyer – Wolf Robotics

Mike Davis – Wolf Robotics

Dennis Fanguy – Bollinger

Steve Marning – EWI

Harvey Castner – EWI

Darren Guillory – SSI

The HuckleBerry Pie Team (This is the SSI team code name): Simon Guy, Chris Emerson, Yves Duruisseau, Craig Johnson, Kevin van Donkersgoed, Ryan Graves, Dan McCuaig, Andrew Wilkie, Daxue Dong– SSI

Post Comments

  1. Ilya Chudakov says:

    Hi Denis,

    It seems like all stiffeners have been pre-attached to the plate with some tack welding before the robot gets to work on it. I am curious if there is any initial prep work that is done manually. Can you clarify?

    Sincerely,

    Ilya.

    1. Denis Morais says:

      @ilyachudakov:disqus You are correct that the alignment and orientation of the stiffeners and tacking them in place is require which technically still takes a bit of effort and time.
      There is not really additional prep work when using this automatic welding vs. manual welding except when you put it on the welding bed you will may need to orient it a certain direction.

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