Creating End Cuts - Intergraph Smart 3D - Reference Data - Hexagon PPM

Intergraph Smart 3D 2D Symbols

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English
Product
Intergraph Smart 3D
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2D Symbols
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Reference Data
Smart 3D Version
13
SmartSketch Version
11

End cuts are placed on the end of a profile. The profile can be bounded to a plate or profile, or it can be free.

Two types of end cut symbols are created in 2D Symbols:

  • Web end cut

  • Flange end cut

A separate symbol file is required for each type.

The web cut is the dominant cut and is always applied first to the profile. The web cut controls where the flange cut is made. Because symbols are parametric, one end cut symbol can be used to represent different end cuts on multiple profile sizes. For example, one web cut symbol can be used for angles, tees, and bulbs.

End cuts are more difficult to understand conceptually than most other symbols. The overall concepts are described below.

Web End Cut

Web Cut Geometry is a closed polygon used within the software to create a Boolean solid:

  • Analogous to a cutting tool that removes material from the entire part

  • Always on the right side of the polygon

  • Cuts through the entire profile, including the flanges

Bounded Profile Part is represented by a maximum of six lines created by edges projected onto the centerline web plane. The lines must use the edge names shown in the table below.

Bounding Part can be represented three ways:

  • As the profile cross section

  • As a maximum of six lines similar to the bounded part, when the web of the bounding part is in the same plane as the bounded part

  • As a B-spline curve idealized boundary when the web cut symbol is to be used for both bounding plates and bounding profiles

Web Cut Mapping Points are created at the intersections of the bounded part lines and the web cut. Web cut points:

  • Use names mapped to Bounded Profile Edge Names as shown in the table below.

  • Are used to locate the flange cut.

Web Cut Point Name

Mapped to Bounded Profile Edge Name

Top

Top

Top_Flange_Top

Top_Flange_Left_Top or
Top_Flange_Right_Top

Top_Flange_Bottom

Top_Flange_Left_Bottom or
Top_Flange_Right_Bottom

Bottom_Flange_Top

Bottom_Flange_Left_Top or
Bottom_Flange_Right_Top

Bottom_Flange_Bottom

Bottom_Flange_Left_Bottom or
Bottom_Flange_Right_Bottom

Bottom

Bottom

In most cases, only the Top and Bottom web cut mapping points are needed. These two points can be used on a worst-case built-up cross-section as shown, or on a rolled cross-section.

Flange End Cut

Flange Cut Geometry is a closed polygon used within the software to create a Boolean solid.

  • Analogous to a cutting tool that removes material from the bounded part flange.

  • Always on the right side of the polygon.

  • Always applied after the web end cut.

  • Symbol must be notched to account for the web so that it only cuts through the flange.

Bounded Part is represented by a maximum of five lines created by edges projected onto the flange plane. The lines must use the names shown in the table below.

The edge names are mapped within the software from the edge names in the profile symbol. The mappings are:

Bounded Part Edge Name

Mapped to Profile Edge Name

Flange_Left

Top_Flange_Left or
Bottom_Flange_Left

Web_Left

Web_Left_Top or
Web_Left or
Web_Left_Bottom

Web_Center

Web_Right

Web_Right_Top or
Web_Right or
Web_Right_Bottom

Flange_Right

Top_Flange_Right or
Bottom_Flange_Right

Bounding Part is represented as a profile cross-section or a B-spline curve idealized boundary.

Flange Cut Mapping Points are mapped within the software from the web cut points in the web cut symbol and are used to locate the flange cut. The applicable mappings depend on the bounded part configuration and the flexibility needed in the symbol. For example, an I-beam has both Flange_Bottom and Flange_Top mappings because it has two flanges. The mappings are:

Flange Cut Point

Mapped to Web Cut Point

Profile

Top or Bottom

Flange_Top

Top_Flange_Top or

Bottom_Flange_Bottom

Flange_Bottom

Top_Flange_Bottom or

Bottom_Flange_Top

In most cases, only the Profile flange cut mapping point is needed. This point can be used on a worst-case built-up cross-section as shown, or on a rolled cross-section.

An example using angles is used throughout to demonstrate the concepts. The sketches below show the end cuts described.