Wednesday, 9 July 2014

BlueSurf: Modeling a Fountain Pen Nib

In this tutorial you learn :

  • How to model a Fountain Pen Nib using the new BlueSurf command of Solid Edge
  • How to use the project curve command
  • Trimming surfaces in Solid Edge
  • Thicken surfaces to make solids
    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.



    t2200

    Drawing the profile - side view


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

     

    t2201

    The details


    Draw an arc with included angle of 134 degrees and radius of 38. See figure.


    This is the section towards the tip of the nib.

     

    t2202

    Parallel Plane


    Create a plane parallel to the y-z plane at a distance of 158.
    This is the length of the nib.

     

    t2203

    The Other End


    On the new plane, draw an arc with included angle of 134 degrees and radius of 25. See figure.


    This is the section towards the base of the nib where it fits into the pen.

     

    t2204

    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.

     








    t2206

    BlueSurf Created


    Click accept accept[4] Preview and Finish buttons in that order.


    A BlueSurf will be created as shown in figure.

     

    t2207

    Parallel Plane


    Create a plane parallel to the x-y plane at a distance of about 130.

     

    t2208

    Profile - top view
    In the new plane, sketch the top view profile of the nib as shown in figure.


    Also make sure sure that the two profiles are well connected on all sides.


    Do not draw a line on the side indicated by red arrow in the figure besides i.e. keep the nib profile open


    A closed profile creates problem later when trimming, since, it divides the surfaces into five different zones and Solid Edge is unable to decide which one to remove.


    Using an open profile for the nib divides the bluesurf into just two parts and one of them (the outer) can be easily trimmed.

     








    t2209

    Project Curve - Curve Step


    Select the Project Curve projcurv   tool from the Surfacing toolbar.


    Select the top profile of the nib as the curve to project.


    Click accept   accept[6]   on the ribbon bar.

     




    t2210

    Project Curve - Body Step


    Select the Bluesurf as the surface to project on.

     

    t2211

    Project Curve - Direction Step


    Point the arrow towards the Bluesurf and click.
    Click Finish on the ribbon bar.

     

    t2212

    Project Curve - View It


    Click the Visible and Hidden Edges shadtol2   tool on the Main toolbar to see the projected curve.

     

    t2213

    Trim Surface - Surface Step


    Select the Trim Surface trimsurf   tool from the Surfacing toolbar.


    Select the Bluesurf as the surface to trim.

     

    t2214

    Trim Surface - Curve Step


    Select the projected curve as the trimming curve.


    Click accept   accept[8]   on the ribbon bar.

     

    t2215

    Trim Surface - Side Step


    Indicate the arrow pointing away from the nib as the part to trim off.


    See figure.

     

    t2216

    Surface Trimmed


    The Bluesurf is trimmed as shown in figure.

     

    t2217

    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 Trimmed Bluesurf as the surface to thicken.
    Use a small value of 1 mm to thicken in any direction.

     

    The Ball and the Cut


    The final steps are :
    1) Create a Revolved Protrusion of a D-shape for the sphere at the tip.
    2) Create a Cutout  
    cutout that slits the front part of the nib.

     

    t2218

    Give the Finishing Touch


    Create another Cutout   cutout[4] as shown in figure besides.

     

    t2219

    The Nib is Ready


    A very realistic looking nib is ready using very few steps in Solid Edge.

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    t2220
    II_R1C13II_R2C14 II_R1C21