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CoreXY

May 4, 2020
CoreXY

CoreXY

SolidCore CoreXY 3D Printer

The newest printer build is coming along nicely. We decided to explore the CoreXY motion system. There’s still much work to be done along with some design decisions/changes to make.

Corexy Carriage

Corexy Carriage

There’s a lot of wasted space at the moment when you compare print area to the actual size of the build. The extra length and width gives me room to make more adjustments as the design process moves forward. It’s easier to cut extrusions and material then re buy or remake parts. At the moment the current build volume is about 350mm x 350mm x 350mm. After we make next set adjustments and assemble the next updates we’ll be looking at 400mm and a 500mm build plate.

We’ll probably make some changes such as reorienting the the y-axis linear rail into a vertical position similar to the RailCore, redesigning the carriages and motor/belt mounting plates where the z-axis motors are placed on the bottom of the machine. When I first designed the plates I thought it would look cool with the motors on top but after I machined everything I realized that moving the bed up and down could cause deflection in the main plates. I’m also considering making the carriage components and rail support one piece similar to the latest update on E3D’s Tool Changing printer.

We’re working on a small budget lol which “recycling” parts from previous builds. For example the bed is made from 3/8 inch thick aluminum that we robbed from an old printer. We’ll change that to 1/4 inch thick once we get more money.

The left motor plates are going to be re-machined to give room for a tool changer setup.

The overall footprint of the machine relative to print volume is somewhat excessive. In order to have a solid enclosure design I had to move the motors inside the frame boundary. This sacrificed the overall printer size to print volume ratio.

This design was inspired by the RailCore, HEVO, D-Bot, Mike Fisher’s QuadRod and Maarten van Lier’s corexy build.

I’ll publish the files open source on Thingiverse when finished but there’s still a lot of work to be done.

Core XY Kit

The all metal upgrade has a mechanical designer corner plates that position the z-axis motors at the top of frame along with the crossing belts. Once we work out the geometry we’ll offer the components 3030 extrusion.

 

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