Surface Type Requested for Unfolding - Intergraph Smart 3D - Help - Hexagon PPM

Intergraph Smart 3Dx Property Descriptions

Language
English
Product
Intergraph Smart 3D
Subproduct
3Dx
Search by Category
Help
Smart 3D Version
13.1

Specifies the surface that the software uses when computing the unfolding. Available options include the following:

Detailing Neutral Surface

This is the default option. Detailing gets the unbounded reference surface without features, and then offsets to the required location based on the rule-given neutral axis offset value. The software intersects the extended surface with the plate solid to trim the surface within the boundaries. This surface considers all the aspects such as bounding elements and bevel parameters to give the exact part length.

DetailNeutralSurface_EX

Detailing Part Surface

This option is implemented in Structural Detailing. The selected part surface is retrieved before any features are applied, and then the surface is offset in the required direction. In this option, there is no trimming involved. Bevel offset parameters are applied, but there is a considerable difference in part lengths because it does not trim the offset surface to lateral faces.

DetailNeutralSurface_EX

True Molded Surface

This option is implemented in Structural Manufacturing. It takes the immediate parent leaf plate system of the selected plate part, and gets its surface geometry. This geometry is then offset to the required surface. The part geometry is not used. The molded surface is offset according to the neutral axis ratio value. Bevel offset parameters are applied, but there is a considerable difference in part lengths because it does not trim the offset surface to lateral faces.

Shrinkage, margins, and bevels are applied as usual. The part lengths are not as accurate for bevels as is unfolding with the neutral surface, however, because the bevel correction is applied to the true molded surface contours. Manufacturing Service Manager , Marking , and Marking by Definition work as usual.

True Part Surface

This option is implemented in Structural Manufacturing. It takes the plate part surface before any features or chamfers, and then offsets that surface in the required direction. This option applies bevel offset parameters, but there is a considerable difference in part lengths because it does not trim the offset surface to lateral faces.

Detailing Molded Surface

This option is implemented in Structural Detailing. It takes the molded surface and intersects it with the part solid to give it the same shape as the part, including accounting for bounding part thicknesses. It should give the same result as Detailing Neutral Surface, except that it is computed in the molded surface instead of the neutral surface. This option fails in cases where it cannot successfully intersect the solid part with the molded system surface. Bevel offset parameters are applied, but there is a considerable difference in part lengths because it does not trim the offset surface to lateral faces.

DetaillMoldedSurface_EX

For a plate bounded only by design or planning seams and other contours, there is no difference; the plate subsystem and the molded part surface are the same. However, if the part is bounded by any other plate systems or profiles, the surface accounts for the detailed shape and thickness of these boundaries. The plate subsystem does not. It is bounded only by the molded surfaces of its boundaries.

Imported Surface

This option is implemented in Structural Manufacturing. For this option, Manufacturing Plate accepts a .sat file. This imported surface is used for generating contours and specifying the curves. All the marking lines are projected onto this imported surface, rather than the surface inherited from the part surface. Imported surface geometry is fed to the unfolding algorithm. Bevel corrections, margins, and shrinkages are applied on the resulting manufacturing data.

Import Bigger Reference Surface

This option is implemented in Structural Manufacturing. For this option, Manufacturing Plate accepts a .sat file. The outer contours and markings are projected onto a larger reference surface. Imported surface geometry is fed to the unfolding algorithm. Bevel corrections, margins, and shrinkages are applied on the resulting manufacturing data. This option is similar to Imported Surface without using the boundary contours of the imported surface.

For non-planar surfaces, the software first tries to unfold the neutral surface by default. If there is a failure getting the neutral surface and its contour data, the software uses the molded side of the object and puts the object on the To Do List with a warning indicating that the unfolding used the molded side for processing. This process is followed for both planar and curved geometry.