Fabrication Margin - Intergraph Smart 3D - Help

Intergraph Smart 3D Structural Manufacturing

PPMProduct
Intergraph Smart 3D
PPMCategory_custom
Help
Version_S3D
11.x(2016)

Adds material at plate edges or profile ends. The material is removed after bending or assembly if it is no longer needed.

You can place simple constant value margins.

You can also place oblique (variable) margins. For an oblique margin, the value is linearly distributed between the start and end points. Oblique margins are only applied to plates.

1 - Oblique margin

The following fabrication margin types are delivered with the software:

Bending margin

Extra material applied to the manufacturing part to ensure proper object shape and size after bending.

Bending margin is a plate or profile part before bending. The margin is used during the bending work on the part using a bending machine. The bending margin is applied parallel to the edge of the part. You can apply bending margins to all sides of the part. The bending margin is removed after the bending work of the part is completed. The workflow in the shop is as follows:

  • Cut the part including the bending margin.

  • Bend the curved part.

  • After the bending work is complete, remove any remaining bending margin.

Heating margin

Extra material applied to the manufacturing part to ensure proper object shape and size after heating.

Heating margin is a margin applied to a part that is bent by heating, or to a part that is known to distort during the manufacturing process and requires heating to remove the distortion. The margin is used by the heating process. Heating margins are applied as oblique or parallel margins to the edge of the part. The workflow in the shop is as follows:

  • Cut the part including the heating margin.

  • Heat the part.

End face margin

Extra material applied to the manufacturing part that is consumed as part of the assembly process. Extra material is typically added parallel to the part end face or edge at the assembly or block lateral face.

During assembly, the margin gradually shrinks and eventually disappears after completion of the assembly or block.

Intercostal margin

Material that is removed at the ends of a manufacturing part when the ends are fillet welded.

Generic Margin - Non Trimmed

Extra material applied to the manufacturing part that is consumed during manufacturing.

Generic Margin - Trimmed

Extra material applied to the manufacturing part that should be removed after manufacturing.

If the edge of the plate contains features, you can specify that those features remain fixed, or move with the margin.

The following example shows an edge feature that moves with the fabrication margin:

The following example shows an edge feature that does not move with the fabrication margin:

For built-up profiles, you can define the margin for the web and flange separately.

Margins can be applied in two different ways, depending upon the rules. Margins can be applied by translation, or by applying a constant offset through the length of the curve.

Offset

Translated

Coaming

Add the additional material necessary to account for your modeling practice.

PanelEnd

Adds material to support the 2-stage production cutting process of plates. Smart 3D applies the solution in combination with panel assembly and panel welding sequence.

By default, the margin is applied by translation for all profiles and members. That is, the contour curve is shifted in the margin direction. To apply a margin by constant offset, you must modify the rules. For more information, see the Structural Manufacturing Reference Data Guide.

Fabrication Margin Ribbon

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