The active extrusion machine is a programmable system to control shape, size, direction, as well as variable hardness of an extruded part.

Active Extrusion Machine Details (PDF)

  • sensing

  • control over shape/size/direction

  • dynamic material mixing

  • material choice(s)
    clay/polyurethane

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    - what process(es) will it use?
    material mixing and extruding processes

    - what will (and won't) it be able to do?
    extrude custom sections and vary the section, direction, and hardness within a single part.
    it won't be able to make extremely precise parts.

    - what are the benefits (and disadvantages) over current practice?
    advantages:
    flexible way to produce custom parts without using several machines and making new dies for each custom part
    disadvantages:
    slower, not as precise, more complicated than typical extrusion process. will require more parts and more moving parts than typical extrusion process.

    - what are the system components?
    1) dynamic material mixer
    2) quad-barrel extrusion drive
    3) programmable extrusion die

    - which parts exist, and which will require development?
    mechanical/software will need quite a bit of development. we will not develop motors and the extrusion material.

    - what will the workflow be from design to output?

    - how much will it cost?
    aluminum stock
    stepper motors
    leadscrews
    rotary bearings
    linear bearings
    fasteners
    misc hardware

    - how fast will it be?
    depends on the material, but probably not quite as fast as a industrial extrusion process

    - what consumables will it need?
    lubricants