Wed 21 Nov 2012
Posted by Aaron
Review the Design for the Open Source Backhoe
Collaboration is the very core of our work. Join us in reviewing the new design for the open source backhoe by clicking the link below. People from all over the world are free to comment and make suggestions before we build the next prototype. If the design is a success, we’ll be ready to document it and release it openly for use all across the planet. Your comments now can help make that happen.
(click on the image to go to join the Smart Mob)
Participate in the Smart Mob
The design review period is open for the next week or so. At any time, feel free to click on the image above or follow this link to join the online collaboration environment:
You can download the CAD files here to view them locally:
The files require the VariCAD viewer – download it here:
VariCAD Viewer (Windows, Mac, Linux)
Global Village Construction Set Design Specifications
Our design needs to balance a number of different elements that include:
- Ease of fabrication
- Lifetime Design
Marcin is preparing a detailed paper covering the specifications in detail, and you can read our current vision of our design parameters here.
Current Design Process
This design was modeled by Lenny-Wayne Patterson, a remote machine designer that we have been working closely with for a few months now. Lenny-Wayne has a background as a mechanic, machine designer, and fabricator, and he has been an excellent contributor to the development of the Global Village Construction Set.
We began the design process of the backhoe earlier this year through a GrabCAD challenge. This was the winner that was selected from 19 entries:
(click image to view all of the design images and download the files)
Lenny-Wayne stepped up to prepare this design for fabrication and so that it would fit the general requirements for the Global Village Construction Set. He modeled the boom after the GrabCAD contest entry:
This design path was abandoned, because it called for the use of welds and the boom shapes are irregular. We decided to move in another direction using bolts and rectangular pieces, because this makes the components easier to fabricate and possibly easy to interchange in a lego-like fashion with other machines in the GVCS package. In theory, one machine can be disassembled and another can be built using a subset of the very same pieces.
Lenny-Wayne took the design in another direction and brought this to the table:
This iteration was a major step forward in terms of aligning with the Global Village Construction Set design specifications. Lenny-Wayne pushed the design further by squaring up the remaining irregular shapes and simplifying the boom. Here is the current model that we’re asking the community to review:
We would like to ask the OSE community to donate any computers of mid-to-high-quality. Lenny-Wayne is using an older machine that can’t really keep up with the work, but he has a lot of experience and skill that will help us develop many machines in the future.
If anyone would like to donate laptops or desktops to Open Source Ecology, please email me at aaron at opensourceecology.org.
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