Tutorial: How to create Parametric　'Mobius_strip' model

kantoku

10 Jun, 2013 05:36 AM

There may be a simpler method.

It is this model.
Mobius_Strip-2round&holes

1. Step 1:

   Step1
   Please turn ON the next option.

   Parameters and Measure-Knowledge-Parameter Tree View-'With value':ON
   Infrastructure-Part Infrastructure-Display-'Parameters':ON
   

   

2. Step 2:

   Step2
   Create two parameters of type Real.

   'Twist_Count' : 1
   'Hole_Count' : 13
   

   

3. Step 3:

   Step3
   Create Sketch, and, please make a semicircle.
   The semicircular radius, please use 'Edit Formula'

   -Formula Editor-
   Hole_Count *2.5mm
   

   

4. Step 4:

   Step4
   Create Line.

   Point:Sketch.1\Vertex
   Direction:yz plane
   Start:-20mm
   End:20mm
   

   

5. Step 5:

   Step5
   Create Axis System.
   

   

6. Step 6:

   Step6
   Rotate to 'Sketch.1'.

   Element:Sketch.1
   Axis:Axis System.1\Z Axis
   Angle:180deg
   

   

7. Step 7:

   Step7
   Create Sweep Surface.

   -Swept Surface Definition-
   Profile:Line.1
   Guide curve:Sketch.1
   Surface:xy plane
   Angle: 'Law' click

   -Law Definition-
   Law type:Liner
   Start value:0deg
   End value: right-click. select 'Edit formula'

   -Formula Editor-
   (180deg*0.25)*Twist_Count
   

   

8. Step 8:

   Step8
   Please perform copy & paste of three times of 'Sweep.1'.
   Please revise the following.

   -Sweep.2-
   Guide curve:Rotate.1
   Start value(Law-Formula Editor):(180deg*0.25)*Twist_Count
   End value(Law-Formula Editor):(180deg*0.5)*Twist_Count

   -Sweep.3-
   Start value(Law-Formula Editor):(180deg*0.5)*Twist_Count
   End value(Law-Formula Editor):(180deg*0.75)*Twist_Count

   -Sweep.4-
   Guide curve:Rotate.1
   Start value(Law-Formula Editor):(180deg*0.75)*Twist_Count
   End value(Law-Formula Editor):(180deg*1)*Twist_Count
   

   

9. Step 9:

   Step9
   Create Sphere.

   Center:sketch.1\vertex.2
   Sphere axis:Axis System.1
   Sphere radius:15mm
   

   

10. Step 10:

    Step10
    Create Circular Pattern.

    Parameters:Complete crown
    Instance(s)(Formula Editor):int(180deg/`Geometrical Set.1\CircPattern.1\AngularSpacing` )+4
    Angular spacing(Formula Editor):720deg/(Hole_Count)
    Reference element:xy plane
    Object:Sphere.1
    

    

11. Step 11:

    Step11
    Create Join.

    Elements To Join:Sphere.1 CircPattern.1
    Check connexity:Off
    

    

12. Step 12:

    Step12
    Rotate to 'Join.1'

    Element:Join.1
    Axis:Axis System.1\Z Axis
    Angle(Formula Editor):`Geometrical Set.1\CircPattern.1\AngularSpacing` *-1
    

    

13. Step 13:

    Step13
    Please perform copy & paste of three times of 'Rotate.2'.
    Please revise the following.

    -Rotate.3-
    Element:Rotate.2
    Angle(Formula Editor):`Geometrical Set.1\CircPattern.1\AngularSpacing`*(int( Hole_Count /4)*1+1)

    -Rotate.4-
    Element:Rotate.2
    Angle(Formula Editor):`Geometrical Set.1\CircPattern.1\AngularSpacing`*(int( Hole_Count /4)*2+1)

    -Rotate.5-
    Element:Rotate.2
    Angle(Formula Editor):`Geometrical Set.1\CircPattern.1\AngularSpacing`*(int( Hole_Count /4)*3+1)

    

14. Step 14:

    Step14
    Create Split

    -Split.1-
    Element to cut:Sweep.1
    Cutting elements:Rotate.2

    -Split.2-
    Element to cut:Sweep.2
    Cutting elements:Rotate.3

    -Split.3-
    Element to cut:Sweep.3
    Cutting elements:Rotate.4

    -Split.4-
    Element to cut:Sweep.4
    Cutting elements:Rotate.5
    

    

15. Step 15:

    Step15
    Create ThickSurface(PartDesignWB)