Creating Gates

This task shows you how to create and edit gates along a parting line on the mold base.
There are several restrictions concerning the manipulation (notably when copying, pasting, deleting, dragging and dropping) of components and drilled CATParts. Click here for more information.
You can create one or several gates, either:
  • on the parting line (recommended), or
  • directly on the molded part (using existing 3D points or vertices, ...).
  1. Open file MoldWithMoldedPartAndComponents.CATPoduct in the sample/MoldAndPart directory.

  2. Hide Mold1 in the specification tree (this is not obligatory but makes it easier to demonstrate point selection).

  3. Click  Add Gate . The point definition dialog box is displayed. 

  4. Select a point on the molded part to define the position of the gate. Click OK.

  5. A GateBody and a Gate.1.1 point are created in the specification tree and the gate definition dialog box is displayed.

  6. Use Stamp to create the gate either in the cavity and/or in the core.

  7. Location: click the point icon to modify the position of the gate.

  8. Click the catalog browser icon to define the type of the gate: Side, Direct or Submarine.

  9. Click in the dialog box and browse to the location of the catalog of your choice. You can use your own catalog.

  10. Double-click Type to select the section shape: Round, Rectangular, Conic or Cylindrical.
    Then adjust the parameter values accordingly. The type of section you can use depends on the type of gate you have selected.

    Direct Type
    • No parameters

     

    Side Type, Round section
    Section

    R - Radius

    Parameter

    L - Length

     

    Side Type, Rectangular Section
    Section

    Parameters

    • L - Length

     

    Submarine Type, Cylindrical Section

    Section

    Parameters

     

    Submarine Type, Conic Section
    Section
    • H - Height
    • R - Radius
    • A - Aperture angle

    Parameters

    • Q - Gate angle slant
    • L - Distance between the gate and the cavity measured on the parting surface (this parameter is computed from the others and you cannot modify it)

     

    Submarine Type, Round Section
    Section
    • A - Aperture angle
    • H - Height
    • L1 - Length
    • R1 - Radius of the cylindrical nozzle
    • R2 - fillet radius

    Parameters

    • L - Distance between the gate and the cavity measured on the parting surface
    • Q - Gate angle slant
    • E - Minimum length of the cylindrical nozzle (this parameter is computed from the others and you cannot modify it)

     

Editing a gate

  1. Select a gate point in the specification tree, then Gate Edition from the contextual menu of the object.
    The Gate definition dialog box is displayed. You can now modify the location of the gate.

You must not change the names of gates once you have created them.

Deleting a gate

 
  1. Activate the MoldedPart.

  2. Right-click a gate in the viewer or the tree and select Delete in the contextual menu to delete the gate.