Tuesday, 10 December 2013

Surface Modeling - A Baby Bottle

In this tutorial you learn:

 

  • How to model a Baby Bottle using the new BlueSurf command of Solid Edge
  • How to use the BlueSurf command
  • Thicken surfaces to make solids
    It is assumed that you are familiar with the basics of Solid Edge Part modeling.

     

  • t3002
     

    Visualize It - Front View


    Its important to first understand the shape of the Baby Bottle before modeling it.


    For this silhouette or driving curves prove useful.
    Identify the driving curves of the Baby Bottle — those curves that actually drive the finished shape of the surfaces.
    All you need to do on in the first few steps is read and understand.
    The front view of the Baby Bottle is as shown in figure.

     


    t3000

    Drawing the profile - Front view


    Start with creating a sketch in the the x-z plane.


    Using the Curve   curvtool   tool, create the outline of the right part of the bottle.
    See figure.

     

    t3004

    Visualize It - Side View


    The side view of the Baby Bottle is as shown in figure.

     

    t3001

    Side Curve


    Draw an ellipse in a plane perpendicular to the plane of the earlier curves and passing through their end points.
    Trim the lower part of the ellipse.
    See figure.
    Connect the end-points of the ellipse well to the end points of both the curves.
    This takes care of the shape of the bottle near the neck.

     

    t3006

    Side Curve – Grip


    Draw an ellipse in a plane perpendicular to the plane of the earlier curves and passing through their mid points.
    Trim the lower part of the ellipse.
    See figure.
    Connect the end-points of the ellipse well to the mid points of both the curves.
    This takes care of the shape of the bottle where the baby holds the bottle with its both hands..

     


    t3007

    The BlueSurf - First Curve


    Click the BlueSurf   bluesurf   tool on the surfacing toolbar.
    Select the trimmed ellipse at the end and click accept accept   on the ribbon bar.

     

    t3008

    The BlueSurf - Second Curve


    Select the trimmed ellipse in the middle and click accept accept[4]   on the ribbon bar.
    Both - correct and incorrect - ways of picking the second curve are shown in figure.


    Pick in the correct way.

     


    t3009

    BlueSurf Appears


    Click accept accept[6]   and then Preview.


    A BlueSurf will be created as shown in figure.

     

    t3010

    Add a Guide Curve


    Still in the BlueSurf command,
    Click the Add Guide Curves guidcurv   button on the ribbon bar.
    Select the curve as shown and click accept accept[8]

     

    t3011

    BlueSurf changes Form - Curve 1


    The BlueSurf changes its form as shown in figure.

     

    t3012

    Another Guide Curve – Type


    Select Single from the Select pull-down list on the ribbon bar.

     

    t3013

    Add Another Guide Curve


    Select the other curve as shown in figure.


    Click the accept accept[10] Preview and Finish buttons in that order.

     

    t3014

    BlueSurf Created


    A BlueSurf, as shown in figure, is finally created .
    This surface spans the two trimmed ellipse and is guided by the two curves.


    This is only 1/8 th of the total bottle.

     

    t3015

    Mirror to ¼


    So mirror it as shown in figure.
    This is only 1/4 th of the total bottle.

     

    t3016

    Mirror to ½


    So mirror it again as shown in figure.

     

    t3017

    Mirror to Full


    Mirror it again to get the complete surface.

     

     

    Stitch the Surfaces


    Click the Stitch Surface   stitchsu   tool on the surfacing toolbar.
    Select all the eight Bluesurfs as shown in figure.
    Click accept accept[12]   and Finish on the ribbon bar.
    The Bluesurfs are stitched together to form a single surface.

     

    t3019

    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 suitable value to thicken in any direction.
    Use the Part Painter to apply a color of your choice.

     

    t3020

    Create the Opening


    Create a simple protrusion of suitable diameter to create the mouth of the bottle.
    Round off sharp edges at the top and neck not just for for aesthetic looks but also since this is a Baby Bottle.

     

    t3021

    Create Base Rest – Cut


    Similarly, create the base rest for the bottle.
    First cut rip the bottom rounded portion of the bottle.
    This will reveal the thickness you applied in the thicken step.

     

    t3022

    Create Base Rest – Close


    Next, create a simple protrusion and round off sharp edges again.

     

    t3023

    Baby Bottle Ready


    This being a Baby Bottle, take care that there are absolutely no sharp edges on any part of the bottle.
    You can ensure this by making the beginning profiles tangential whenever they are mirrored or wherever two disjointed profiles meet each other at any stage in the process.

     

    t3002[4]

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