Friday, 4 July 2014

BlueSurf: Creating Hurled Surfaces

In this tutorial you learn :

How to create a Hurled Surface using the new BlueSurf command of Solid Edge

  • How to use the project curve command
  • Trimming surfaces in Solid Edge
  • Splitting curves
  • How to use the Bounded Surface
    It is assumed that you are familiar with the basics of Solid Edge Part modeling.
  • Full index of Solid Edge surfacing tutorials on this blog is here.

    t2300

    Create Planes

    Start with creating two planes parallel to the y-z plane on either sides.

     

    t2301

    Draw the Profiles - In Parallel Planes


    Sketch an arc in both the parallel planes.
    As shown in figure, the arc on the near side is bigger than the arc on the farther plane.

     

    t2302

    Draw the Profiles - In x-y Plane


    Sketch two more arcs in the x-y plane.
    These arcs are connected to the arcs drawn in the parallel planes.

     

    t2303

    Another Profile


    Sketch one more arc in the near side parallel plane .
    These arcs are connected to the arcs drawn in the parallel planes.

     

    t2304

    Convert to Curve


    Use the Convert to Curve tool in the sketcher environment to convert the arc to a spline.

     

    t2305

    Adjust the curve


    This arc has its end points connected to the ends of the larger arc.
    Pull few of the control points on the arc converted converted to curve and adjust its curvature as shown in figure.

     

    t2306

    The Details


    Overall the curve looks as shown in figure.
    The end points are still connected and the Connect relationship handle is clearly seen.
    The arc seen below the curve is the one on the farther side parallel plane.

     

    t2307

    The BlueSurf


    Click the BlueSurf   bluesurf   tool on the surfacing toolbar.
    Select the bigger arc and click accept
    accept   on the ribbon bar.
    Then select the smaller arc.
    Both - correct and incorrect - ways of picking the second arc are shown in figure.
    Pick in the correct way.

     




    t2308

    Begin creating the BlueSurf


    Click accept accept[4]   on the ribbon bar.
    A Bluesurf is created as shown in figure.

     

    t2311

    Add a Guide Curve


    Still in the BlueSurf command,
    Click the Add Guide Curves
    guidcurv   button on the ribbon bar.
    Select the arc as shown in figure and click accept
    accept[6]

     


    t2312

    Add Another Guide Curve


    Similarly, select the other arc as shown in figure.
    Click the accept
    accept[8] Preview and Finish buttons in that order.

     

    t2313

    BlueSurf Created


    A BlueSurf, as shown in figure, is finally created .
    This surface spans the two arcs in parallel planes and is guided by the two arcs in the x-y plane.

     

    t2309

    Once More


    Hide the Blue Surf created in last step.
    Create another BlueSurf.
    Use the same curves except that, instead of the larger arc, use the arc-converted-to-curve as the starting curve and the small arc and the guide curves remain the same.
    As shown in figure, the BlueSurf pointed by red arrow is the one created using the larger arc.
    The BlueSurf pointed by Blue (no pun intended) arrow is created using the arc-converted-to-curve.

     




    t2310

    A clearer view


    Although the two BlueSurfs begin with different curves ( an arc and a converted curve), they both have a common curve - the smaller arc on the far side. See figure.


    The red arrow points to the common arc on the far side.
    The yellow arrow points to the larger arc and the green arrow points to the arc-converted-to-curve.

     




    t2314

    A clearer view


    Although the two BlueSurfs begin with different curves ( an arc and a converted curve), they both have a common curve - the smaller arc on the far side. See figure.


    The red arrow points to the common arc on the far side.
    The yellow arrow points to the larger arc and the green arrow points to the arc-converted-to-curve.

     




    t2314[4]

    Profile - top view


    In the x-y plane, sketch two arcs as shown in figure.
    The two arcs do not touch each other nor they are parallel.

     

    t2315

    Project Curve - Curve Step


    Select the Project Curve projcurv   tool from the Surfacing toolbar.
    Select the left-side arc as the curve to project.
    Click accept  
    accept[10]   on the ribbon bar.

     



    t2316

    Project Curve - Body Step


    Select the top-side Bluesurf as the surface to project on and indicate the arrow towards the Bluesurf in the next step.
    Similarly, project the right-side arc on the lower-side BlueSurf.

     


    t2317

    Project Curve – Ready

    Now you have two BlueSurfs with an arc projected on each of them.
    See figure.

    t2318

    Trim Surface - Surface Step

    Select the Trim Surface trimsurf   tool from the Surfacing toolbar.
    Select the top-side Bluesurf as the surface to trim.

    t2319

    Trim Surface - Curve Step

    Select the curve projected onto this BlueSurf as the trimming curve.
    Click accept  
    accept[12]   on the ribbon bar.

     

    t2320

    Trim Surface - Side Step

    Indicate the arrow pointing to the right side as the part to trim off.
    See figure.

     

    t2321

    Surface Trimmed


    The Bluesurf is trimmed as shown in figure.

     

    t2322

    Once More


    Similarly, trim the lower-side BlueSurf using the curve projected onto it.
    The two BlueSurfs look like as shown in figure.

     

    t2323

    Derived Curve


    Click the Derived Curve dericurv   tool on the Surfacing toolbar.
    Select the Select Curves
    selcurve   button on the ribbon bar.
    Select the two arcs as shown in figure.
    Click Finish on the ribbon bar.
    A derived curve is created.

     




    t2324

    Split Curve – Begin


    Click the Split Curve tool on the Surfacing toolbar.

     

    t2325

    Split Curve - Select Curve Step


    Select the derived curve as shown.

     

    t2326

    Split Curve - Who Will Split


    Select Keypoint from the pulldown list in the ribbon bar.

     

    t2327

    Split Curve - Pick the Keypoints


    As shown in figure, select the two keypoints at the intersection of the derived curve and the projected curves.

     

    t2328

    Split Curve - Once More


    Similarly, split the other derived curve at two keypoints as shown in figure with the two yellow arrows.

     

    t2329

    Display Required Curves


    Adjust your display such that the projected curves and the split curves are only entities visible.
    See figure.

     

    t2330

    Bounded Surface – Begin


    Click the Bounded Surface bondsurf   tool on the Surfacing toolbar.
    Select the four curves as shown in figure.

     

    t2331

    Bounded Surface – Finish


    On the ribbon bar, click the accept accept[14] Preview and Finish buttons in that order.
    A Bounded Surface is created as shown in figure.

     

    t2332

    Stitch the Surfaces


    Display all the surfaces again.
    Click the Stitched Surface
    stitchsu   tool on the Surfacing toolbar.
    Select the two BlueSurfs and the Bounded surface.


    click the accept accept[16]   and Finish buttons on the ribbon bar.
    The three surfaces are stitched together to form a single surface.

     




    t2333

    Surface to Solid


    Click the Thicken   thicken   tool on the Features toolbar.
    The Thicken tool is in the same flyout as the Thin Wall and Thin Region tools.


    Select the stitched surface to thicken.
    Use a small value of 1 mm to thicken in any direction.

     




    t2300[4]

    The Hurled Surface is Ready


    This way Hurled surfaces can easily be created in Solid Edge.
    Hurled Surfaces find many uses in Industrial and Product design.
    Imagine this surface to be on one side of a talcum powder plastic bottle. The hurl (step) acts as a smooth grip to hold the bottle and at the same time providing aesthetic looks to the bottle i.e. there are no sharp edges.
    Other examples are four-wheeler bonnet, etc.
    As an example, this bottle has hurled surfaces in at least 3 places. Can you identify them.

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    t2334
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