Ironworker Machine


For those of you who do not know, I’ve been hard at work on the design of the open source Ironworker Prototype II and plan on building it this winter at my grandfather’s fabrication shop, Enniss Inc. I’m calling out to fellow fabricators and engineers to help with the Ironworker design, so we can place the design of this very important tool into the repository of common knowledge. For those of you not familiar with the importance of an ironworker machine – it is the heart of any custom metal fabrication shop – a shop that can build any of the mechanical devices of the Global Village Construction Set.

This prototype will be the second version of the Ironworker. As well as having the 120T punch, this prototype will be able to shear 1”x12” flat and 6”x6”x1/2” angle steel. There will be a “tool cavity,” a space below the punching arm to which many accessory tools can attach. This will enable the machine to not only have the features above, but also attachments like brakes, notchers, and rod shears.

Scotchman 120T Ironworker

Scotchman 120T Ironworker

I had another design nearly developed using a vertical shear, but trashed it when I realized how much better it could be with optional attachments. And now, I’m stuck.

The first design version (1.0) of Prototype II

I need help designing the lower arm and flat shear. (more…)

Categories: Challenges, Crowd Design, Crowd Engineering, Ironworker Machine, Metal Hole Puncher, Project Reports

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Our infrastructure for flexible fabrication along the lines of the Open Source Fab Lab, RepLab, is evolving nicely. We reported recently on Prototype I the heavy duty, open source, drill press, and here we are reporting on Prototype I deployment of our 150 ton hole puncher. Both of these are critical to fabrication ergonomics optimization for resilient communities in general, and, in particular – for Factor e Farm’s present fabrication of The Liberator open source CEB press and the LifeTrac open source tractor. For comparison, see earlier notes about our off-grid flex fab facility in a blog post from 2 years ago.

Here is a video on the hole puncher, with explanations.

Open Source Metal Hole Puncher – Prototype I from Marcin Jakubowski on Vimeo.

The implementation required a high level of attention to the  extreme heavy build and die positioning precision requirements – much more than anything we’ve done with the open source tractor, automated CEB press, or other devices. This is our first device that required at least some consideration of structural engineering – beyond brute-force overbuild. The local fab shop helped on the design. You can download the dxf design file at our design repository.

(more…)

Categories: Accomplishments, Community Supported Manufacturing, Fabrication Optimization, Flexible Fabrication, Ironworker Machine, Metal Hole Puncher, Permafacture, Personal Fabrication, RepLab

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