Hydra-MMM Prototype
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Release status: unknown
Description | Prototype for multi-headed manufacturing machine
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License | unknown
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Based-on | [[]]
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Contents
Project Background
'Hydra is a multi-headed manufacturing machine that is originally being designed and built for ME463 (senior design) at Purdue University. The general idea is to make a personal manufacturing machine that will be able to perform multiple, simultaneous operations such as milling, additive prototyping, pcb fabrication, laser etching, etc. For the most part, current industrial workplaces have dedicated machines for each one of these functions. By having multiple independent toolheads on the machine, Hydra will be able to perform compound operations that are not possible on dedicated machines (ie FDM rapid prototyping and milling for more accurate part outlines). Hopefully the project will lead to potential discoveries of new manufacturing techniques through the use of compound operations, as well as create a very cost effective product for small business or educational institutions who cannot afford current commercial machines.
Please see: http://cpwebste.blogspot.com/ for more information about the build or https://sourceforge.net/projects/hydra-mmm/ for all future software and firmware releases'
Cartesian Robot Target Parameters
500 IPM machining movement, 1000 IPM max speed
XYZ resolution of 2.5 mils (0.0025”)
3 mil (0.003”) max deflection under machining loads
18”x20”x8” build volume
Up to 4 independently controlled toolhead mounts
Completed Design Analyses
Frame rigidity and table deflection
Guide rail strength and max deflection (used to size all rods)
Machining forces placed on toolhead (milling and drilling)
Sleeve bearing maximum stresses during operation
ACME screw calculations for force, deflection, max rpm, resonance, and resolution
Chopper driver MATLAB circuit analysis (loaded RL circuit with transient and decay)
Several CAD concepts in Pro/Engineer each with a priced BOM for evaluation
Barrel heater viability testing
Thermal model of FDM extruder assembly
Note: if anyone is interested in the actual files behind any of these analyses just let me know
Future Ideas
- Build pick-and-place machine
- Make attempt at automated prototyping using pick-and-place machine to remove plastic parts once they are done printing. May even try to do some kind of basic manipulation and assembly
- Finish pass prototyping: fast FDM prototyping with large diameter nozzle and then use fine milling cutter to refine the layer outlines