Sheet metal auger blade flat pattern?

Discussion in 'SolidWorks' started by Boltar, Sep 9, 2003.

  1. Boltar

    Boltar Guest

    I need to create flat patterns of sheet metal auger blades.
    I cant seem to create them as sheet metal parts in Solidworks.
    I have a lot of experience with cones and other types of transition layout,
    just wish Solidworks could do it.

    Anybody know how to do this with Solidworks?

    Boltar, Sep 9, 2003
  2. Sure

    You can only have one rotation though

    Create a helix for your outside and one for your inside

    Then create a 3d sketch and convert entities one for each helix
    Insert/Sheet Metal/Lofted Bends
    that is all
    Corey Scheich
    Corey Scheich, Sep 9, 2003
  3. Boltar

    Boltar Guest

    Thank you very much.
    That worked great!

    Boltar, Sep 9, 2003
  4. Boltar

    Phil Evans Guest

    BTW manufacturing an auger segment is easily achieved by creating a
    disc of material with an inner and outer diameter, the inner diameter
    must be slighlty bigger than the arbor and the outer diameter also
    slightly bigger than the finished auger outer diameter. Make a single
    cut normal to the circumference through one side of the disc and then
    stretch it to one auger pitch. These segments can then be welded
    together to the required length.
    Phil Evans, Sep 10, 2003
  5. Boltar

    kenneth b Guest

    BTW manufacturing an auger segment is easily achieved by creating a

    your description just jogged my memory. years ago i worked in a shop (food
    processing) that had a "flight" forming machine. flight in this case refers
    to "pitch". it was a funky little press with very unique dies. the flight
    was formed a few inches at a time as the operator rotated through the blank
    through the press. it took some practice to get different pitches.
    kenneth b, Sep 10, 2003
  6. I used to work in the Engineering department of the Gleaner combine plant
    before the plant closed and moved. We made LOTS of augers and made most of
    our own flighting, and the flat pattern for them was a flat strip on a coil.
    The way the machine worked was to run this strip in and squeeze one edge of
    it so that it got longer than the other one. By controlling different
    rollers and guides, you set the ID, OD, and pitch of the flighting. The
    upside of the process is that you can make long continuous lengths of
    flighting. The downside is that the flighting is thicker at the base than
    it is out at the outside edge. If we needed a constant thickness section in
    high-wear areas, they had to be cut out of plate and pulled, but you only
    got one pitch at a time.

    Wayne Tiffany, Sep 10, 2003
  7. Boltar

    Arlin Guest

    Always use caution with lofted bends!!!!!

    I remember looking at the lofted bend feature to help automate our auger
    flighting design, but its results were no where close to what our flat
    pattern designs from trial and error. I never looked into it much

    I used to work at a place where we made LOTS of augers mostly for the
    feed mixing industry (for feedlots and dairies). Our augers had some
    pretty heavy flighting ranging from .25" to .75" thick and up to 36" in
    outside diameter.

    These heavy augers used sectional flighting, flighting made one pitch at
    a time. The flat pattern was just a large washer or donut shape with a
    pie section cutout. That flat pattern is then put in a press in which
    the top and bottom die is pretty much just a section of flighting. The
    operator would handle the workpiece, bending a small section of the
    flight with each stroke of the press. A very simple and inexpensive
    operation, really, but the process took a lot of skill and experience on
    the operator's part to know how to manipulate the workpiece and press.

    We used some simple formulas and rules of thumb to calculate the shape
    of the flat pattern. In almost every case, the flat was a trial and
    error process: cut the flat, bend it, modify the flat, try again.

    Furthermore, material, thickness, and shape of the auger (many had
    notches or holes for mounting knives on the OD) could drastically affect
    the bending process and flat pattern dimensions.
    Arlin, Sep 10, 2003
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.