Showing two positions of a cylinder? New to Pro-E

Discussion in 'Pro/Engineer & Creo Elements/Pro' started by Leggs, Nov 18, 2005.

  1. Leggs

    Leggs Guest

    I am new to Pro-E, I have been using Solidworks for several years.
    Here is my question, how do I show two positions of a cylinder? The
    guys here where I work are doing it with simplified reps, but that
    requires two copies of the cylinder rod which screws up the BOM. Is
    there not a way to make a simplified rep show a part in a position
    driven by a variable? Or is there another way to do this?

    Thanks in advance!
     
    Leggs, Nov 18, 2005
    #1
  2. Leggs

    Stu Guest

    We do this with nitrogen spring cylinders by modelling the body and
    piston in the compressed positions, and add a revolved surface about
    the bore axis to show the extended position. You can drive the surface
    top from a variable that dimensions the top top bottom of the
    cylinder.
    In this way we have a visual of the stroke of the cylinder, and
    because the extended top is only a surface, it doesnt interfere with
    global interference checks.
     
    Stu, Nov 18, 2005
    #2
  3. Not sure exactly what you want to do or show, but I'd try using a family
    table. Create an instance for the 2nd position. That way the BOM won't count
    2 of the same parts. Separate views for each position should work fine. If
    you're trying to show both positions in one view... not sure. I'd have to
    try it out.
     
    Dave Ignaczak, Nov 18, 2005
    #3
  4. Leggs

    David Janes Guest

    Couple more possibilites:
    1. Create an explode state: these can be shown in drawings as a view state. The
    explode state would capture the extended cylinder position. No additional models
    needed. It is just another view of your original assembly.
    2. Assemble your model with "connections", not 6dof fixed (the usual condition of
    an assembled component). A "pin" connection allows planar movement of piston along
    axis of cylinder/shaft. Once constrained in this way, you can take snapshots that
    can be made available to drawing views.

    These may require additional modules of Pro/e; depends what you got already. If
    details needed, they can be provided.
     
    David Janes, Nov 19, 2005
    #4
  5. Leggs

    John Wade Guest

    Yet another: drive the piston with a dimension controlled by a family
    table.
     
    John Wade, Nov 21, 2005
    #5
  6. Leggs

    Ron M. Guest

    Sure could. Mechanism Design Extension does offer some really nice
    functionality for simulating a cylinder's motion. In fact, there's actually
    a Connection constraint called Cylinder. This allows both translation and
    rotation about the cylinder's centerline axis. A Slider connection only
    allows translation along the cylinder's centerline axis. Slider works just
    fine if you don't need any rotation. And it can be sort of fun to animate
    these types of mechanisms using Pro/E's Animation module.

    Ron M.
     
    Ron M., Nov 22, 2005
    #6
  7. Leggs

    David Janes Guest

    And we didn't even get into the functionality of design animation
    ('Applications>Design Animation') which combines some of the functionality of
    mechanism design with that of creating exploded views. All of which can be
    captured in snapshots and mpegs. What is that ~ five different approaches!?! The
    biggest problem in moving from SolidWorks to Pro/e may be focusing on JUST one. It
    was no problem with SW; there was only one.[/QUOTE]
     
    David Janes, Nov 22, 2005
    #7
  8. Leggs

    Leggs Guest

    Thanks for the options. I will have to give some of those a shot and
    let you know how it worked out.
     
    Leggs, Nov 23, 2005
    #8
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