8. Oblique Duct

Exercise 8: Oblique Duct

Version compatibility

This exercise was carried out with version 27.0 (Vertex 2021).

In this exercise you will learn to

• How to use a jig to model sheet metal parts.
• How to copy a face from another part.
• How to create a sheet metal part from a surface chain.
• How parts are positioned using coincidence constraints.

Functions to be used:

• New > Part
  
• Faces > Copy Face > To volume.

• Add Flange.

• Operation:
  
• In the assembly: Clipboard> Copy / Paste.
• In the assembly: Coincidence constraint between surfaces and Coincidence constraint between lines.
  

Starting point

In the past, an assembly has been created in which the jig has been modeled.

• Continue doing this exercise in the previous exercise model.
• If you have not yet modeled a jig, see the instructions from the previous exercise.
• You can also download a model from the end of the previous exercise.

Create a new part in the assembly

• Right-click function: New > Part.
  
  • Enter the label (which is also the name of the model and by default will be the name of the drawing).
  • Enter the archive information by clicking Arc.Data.
  • Accept (or create a new) project, where the model will be saved.
  • OK.

Copy the surface of the jig into a sheet metal part.

• Right-click function: Faces > Copy Face.
  
• Select TAN in the upper left corner of the desktop, ie the selection of the tangential surface chain. 
• Click a face.
  • The program searches for tangential surfaces.

• 

  • Dialog Copy Surface opens.

• Leave the value: 0 (the surface is copied exactly to the location of the old surface), shown in the figure.
• Click: Out, shown in the figure 1).
• Select: To Volume, shown in the figure 2).
• OK, shown in the figure 3).
  • Dialog Tangential Offset opens.
• Enter the sheet metal thickness value: 2, shown in the figure 4).
• Click: Out, shown in the figure 5).
  • The sheet metal comes out of the surface.
    
• Select: Change to sheet metal part, shown in the figure 6).
  • This changes the properties of the part to sheet metal.
    
• OK, shown in the figure 7).

Add flanges (mounting edges) to the part

• Click to the two lines on the outside edge of the sheet metal.
• Right-click function: Add Flange.
  
• Enter the value:
  • Radius: 2
  • Angle: 90 or 100 (The value 100 found by experiment).
    
  • Length: 40

The program suggests an angle of 90. You can accept it to see if the part looks valid.

• Turn the projection in the direction: Left View.
• If necessary, edit the Flange feature (for example, by double-clicking it on the feature tree) and try other values.

Return from part to the assembly:

• 

  (This function saves the part automatically.)

Create another sheet metal part in the same way

• Right-click function: New > Part.
• Right-click function: Faces > Copy Face.
• Right-click function: Add Flange.
  • In this part, the angle 96.4° angle looked good.

Return from part to the assembly:

• 

  (This function saves the part automatically.)

Complete the assembly by copying the parts

• Click a part.
• Right-click function: Clipboard > Copy.
  
• Right-click function: Clipboard > Paste.
• Before positioning, turn the part 90 ° twice around the blue axis.

Use the Conincident constraint to locate the parts

Add three Conincident constraint between each part and the jig.

• Two pairs of faces.
• One pair of lines.

Hide the jig

You should create a new configuration in the assembly where the JIGI part is visible and hide it in the O: Defauld configuration.

• Click Configurations. (From the feature tree)
  
• Right-click function: Add Configurations.
• Select this new configuration: 1: Configuration 1.
  
• Right-click function: Properties.
  
  • Enter a new name: Eg Jig.
  • OK.

• Activate the configuration: 0: Default (Either double-click or Right-click function).
• Click the JIG part.
• Right-click function: Hiding > Hide.
• Click the configuration: 1: Jig.
• Right-click function: Update Hiding State.
  

Create drawings for parts

• Take each part in turn for editing.
• Enter or select a raw material for the parts (See exercise 2: Box) 
• Create a drawing.
  • Click the Drawings in the feature tree.
  • Right-click function: New Drawing.
  •  Select scale (1: 5 to fit geometry on A3 form).
  • Select projections: Front, top, left and Flatten sheet.

Save the dawing

• File > Save or click

  

  or press

  

  

• Remove the drawing from the desktop.
• Return from part to the assembly

  • 

Create a drawing for the assembly model

• Click the Drawings in the feature tree.
• Right-click function: New Drawing.
• Select projections, such as front, top, left, and ISO, -45 front right.
• Select scale (1:5 to fit geometry on A3 sheet).
• Add part numbers: Drawing> Machanical > Parts list> Part number.
  • Number > Number
  • Exit the dialog.
  • OK.
  • Click the part (1 and 2) and the location of the part number ball.

Save the dawing

• File > Save or click

  

  or press

  

  

• Remove the drawing from the desktop.

Save the model

• File > Save or click

  

  or press

  

  

Download the assembly model (VX_SMD9.vxz) here.

• Includes Jig and both different sheet metal parts VX_SMD10 and VX_SMD11.