RUG/Pennsylvania/State College/Solidworks OHM
Contents
Overview
The Open Hybrid Mendel (or OHM) is a project of the State College Reprap Users Group. It is a Mendel design, which uses both standard Sells Mendel parts, a Prusa Z drive, various redesigns from the community at large, and a number of small design improvements developed in our PSU Reprap class. It is so named due to this hybridization of designs, and obtains the 'Open' designation from the OpenX and OpenY axes it uses. The prototype for the OHM design was Etherdais_Unit_One. On this page there are the sub-assemblies and full assembly of the most up to date OHM design done on SolidWorks. Under each sub-assembly and the final assembly there are screen pictures and zip-files for all the parts. So be prepared because you now have the power to create your very own OHM!
Full Assembly
This is the full assembly in SolidWorks. Each subassembly is represented by a different color of printed pieces.
Above are SolidWorks pictures of the full assembly. Below is the zip file containing all parts and hardware:
Media:Z-axis.zip
Subassemblies
Though all parts work together to make a 3D model somewhat like a human body; we broke the assembly down to five sub-assemblies.
Frame
The OHM uses Camiel's thin shelled Vertex design, maintaining vertices similar to the Sells design, but using less filament. The frame has one motor that powers a belt to move the bed in the y-axis. It uses threaded rods to connect the vertices and is the same as the original Mendel design.
Above are SolidWorks pictures of the frame assembly. Below is the zip file for this assembly:
Media:Z-axis.zip
Z Axis Assembly
The OHM uses a Prusa double motor design for driving the Z axis, avoiding the large prints and continuous belt of the Sells Z-drive design. We still use Sells bar clamps to clamp the smooth rod to the Z-motor mounts, as they are compatible, and look sharp together.
Above are SolidWorks pictures of the z-axis assembly. Below is the zip file for this assembly:
Media:Z-axis.zip
X-Z Axis Assembly
Above are SolidWorks two pictures of the x-z axis assembly. Below is the zip file for this assembly:
Media:X-axis.zip
Y Bed Carriage
Above are SolidWorks pictures of the y bed carriage assembly. Below is the zip file for this assembly:
Media:Z-axis.zip
Extruder and Carriage
Above are SolidWorks pictures of the extruder and carriage assembly. Below is the zip file for this assembly:
Media:Z-axis.zip