Monday, 20 January 2014

Surface Modeling - A Hair Dryer Part 1 of 2

In this tutorial you learn :
 
  • How to model a Hair Dryer using the BlueSurf command of Solid Edge
  • How to use the BlueSurf command
  • How to project curves onto surfaces
  • How to trim surfaces
  • How to stitch surfaces It is assumed that you are familiar with the basics of Solid Edge Part modeling.

    Solid Edge Surfacing

  • Drawing Profile for the Handle

    Start with creating a sketch in the the x-y plane.
    Using the Curve   curvtool   tool, create the outline of the base part of the handle.
    Solid Edge Surfacing
    Handle Profile - Top View

    Close the curve with a line and make the line tangent to the curve.
    The line is a very small part of the total profile.
    See green circled area in figure.
    Solid Edge Surfacing
    Handle Profile - Top Part

    Draw another curve in a plane parallel to the x-y plane.
    See figure.
    Solid Edge Surfacing
    Top Part - Top View

    The top profile is a copy of the bottom profiles - using include curves   includec   - and scaled down.
    See figure.
    Solid Edge Surfacing
    Side Curves

    Draw two more curves in the x-z (front) plane.
    See figure.
    Connect the ellipse well to the end points of both the curves as shown in figure.
    Solid Edge Surfacing
    Side Curves - Front View

    The right curve has crests and troughs to provide grip to each finger of the hand.
    Connect the curves well to the pierce points of the top and bottom curves as shown in figure.
    Solid Edge Surfacing
    The BlueSurf - First Curve

    Click the BlueSurf   bluesurf   tool on the surfacing toolbar.
    Select the curve at the top.
    Solid Edge Surfacing
    The BlueSurf - Second Curve

    Select the bottom curve and click accept accept   on the ribbon bar.
    Both - correct and incorrect - ways of picking the second curve are shown in figure.
    Pick in the correct way.


    Solid Edge Surfacing
    BlueSurf Appears

    Click accept accept[4]   and then Preview.
    A BlueSurf will be created as shown in figure.
    Solid Edge Surfacing
    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[6]

    Solid Edge Surfacing
    BlueSurf changes Form - Curve 1

    The BlueSurf changes its form as shown in figure.
    Solid Edge Surfacing
    Add Another Guide Curve

    Similarly, select the other curve as shown in figure.
    Click the accept accept[8] Preview and Finish buttons in that order.
    Solid Edge Surfacing
    BlueSurf Created

    A BlueSurf, as shown in figure, is finally created .
    This surface spans the top and the bottom curves and is guided by the two vertical curves.
    Of these, the top and bottom curves form the size of the handle .
    The left vertical curve conforms to thumb and the palm.
    The right vertical curve provides the grip to the three fingers.


    Solid Edge Surfacing
    Making the Blower – Ellipse

    Create an ellipse in the y-z plane.
    Place it as shown in figure.
    Solid Edge Surfacing
    Blower - Convert to Curve

    Select the ellipse.
    Click the Convert to Curve   convcurv   tool on the Draw toolbar.
    This tool is in the same flyout as the curve tool.
    The ellipse will be converted to curve and control points will appear as shown.

    Solid Edge Surfacing
    Blower - Add Points

    Select the ellipse.
    Click the Add or Remove Points   addpoint   tool on the ribbon bar.
    Click the ellipse at two places to add more control points as shown.

    Solid Edge Surfacing
    Blower - Pull Points

    Select the ellipse.
    Click the control points and reshape the ellipse as shown in figure.
    Solid Edge Surfacing
    Blower - More Cross-sections

    In planes parallel to the y-z plane, create more cross sections for the blower.

    Continued in Part 2...

    cMayoCAD is a first of its kind training program where you learn to build your own, brand new, fully functional CAD system using a geometric modeling kernel.
    Click here to download the detailed course contents.
    Solid Edge Surfacing
    Components of the CAD program you develop:
    Part, Sketcher, Assembly environments.
    A native binary file format for the CAD program.
    Data Exchange - Import and Export with other CAD programs via a neutral format.
    A Plugin system that allows third parties to extend the core functionality of your CAD system.
    A script editor and an interpreter to enable automation of your CAD system via scripting.



    cMayoCADH