Advanced Sheet Metal Design Using NX Cad Challenge_1_Casing Design
Modelling of Casing
Introduction:
Symens NX is an engineer software used to create real models of mechanical part and from these models the technical drawings that will be used to manufactory the parts modelled.
Design methodology
Objectives:
The objective of this first lessons of this module is to learn all the features necessary to create a casing.
Description of the modelling process.
Sketch: Is used to draw any kid of shape in a 2D space that will be used to generate a solid model.
Tab: Is used to create a tab in a 3D space from a sketch previously defined
Normal cut: Is used to create a cut-out on the solid model. This feature needs also a sketch that will drive the shape of the cut-out.
Bend: Is used to bend the metal sheet create previously with the tab command.
Flange: Is used to add a flange to the existing sheet metal. This command won’t just bend the existing sheet metal, it will also add material to the part.
Break Corner: Is used to eliminate sharp edges on the existing part, it can be either chamfers or fillets.
Unbend: Is used to unbend the existing sheet metal so you can apply extra features to it looking at the part on the pre-ending stage.
Simple screw hole: Is used to add holes to the existing sheet metal.
Spline: Is used to add radios or more smooth transaction between flat edges a previous sketch
Dimple: Is used to create dimples on the existing sheet from a sketch where you can define the radius, depth, and others details.
Bead: In the same why of the dimple this feature will lift or lower the material from a sketch simulating a stamp tool.
Mirror feature: Is used to mirror pre-existing features into the model. Will need a reference edge, plan or line to mirror.
Re-bend: Is used to re-bend the metal sheet to it final stage which was predefined before we start adding the details such as dimples and beads.
Flat Pattern: Is used to generate a new view of the solid part which shows all the features added to the part along with their geometrical details.
Drawing/Drafting: Is used to create a drawing of the part modelled where you can define one or more views to be added.
Conclusion:
The final casing sheet metal along with the detailed final drawing were completed using th above features.