Shaft Driven Extruder

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Revision as of 10:07, 17 November 2011 by Dfk20012002 (talk | contribs) (added line about possible way to creat ball splines)
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Shaft driven Extruder

Release status: Concept

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Description
X-axis Shaft driven Extruder
License
open everything
Author
Contributors
Based-on
Categories
CAD Models
External Link

Please note this is still being developed and I will add extra information soon

Rough Example of a Spline Extruder

Pros and Cons

Design Advantage Disadvantages
NO Stepper Motor on Extruder
  • Lower Weight
  • Lower Inertia experienced on extruder
  • Faster move speeds
  • Better Accuracy
Where does the stepper go? (hahaha)
Stepper Motor Placed on Right of X-axis
  • Balances Frame weight out
  • Possible better distribution of wear on threads of z axis (hard to verify this claim)
Shaft Drive
  • Enables multiple heads to be driven by the same stepper motor
  • Maintains high degree of control at extruder
Might get quickly bogged down if too many heads

The Premise about this is to reduce the amount of weight on the extruder, a previous approach was to use Bowden cable extruders however some of the claims are that it is unresponsive and elastic in comparison to a traditional extruder. As such by having a shaft driven extruder you wold not have the same problems

Examples of different drive shaft profiles that are advailable

While there are a multitude of drive shafts out there these are just some of them.

Ball splines: though the most accurate and best for linear motion as well as rotation are ludicrous in price costing $100+ per 12inchs and the take off gear is about $80 One proposed method of creating them is via a router or dremel tool in a channel cutting groves into a shaft for a cheap replacement, This has not yet been attempted.

FILE ID# TYPE DESCRIPTION AVAILABLE FORMATS CREATED/RESERVED BY
ReprapSplineExtruder OpenScad Code These are CAD files for the total OpenScad model. .scad, [[media:]] Dfk20012002 13:48, 17 November 2011 (UTC)
Your-File-Name CAD FILES FOR PARTS These are CAD files for the total model. .xml.zip, .stl.zip [[User:|User:]] 12:00, Today's Date 20xx (UTC)
Your-File-Name EVEN MORE FILES These are are even more files. .xml.zip, .stl.zip [[User:|User:]] 12:00, Today's Date 20xx (UTC)|-