Advanced Sheet Metal Design Using NX Cad Challenge_1_Casing Design
Casing Design
Objective: Casing design in SIEMENS-NX using advanced sheet metal techniques.
Introduction
Sheet metal is a metalworking process on a flat thin metal. In the aerospace and automobile industry, the sheet metal process is important. Sheet metal designing is a process of forming sheet metal by punching, stamping, cutting, and bending. In the case of casing designing, all these processes come into play.
Design Methodology
Description
The design started with the base tab reference sketch. The reference sketch is used to create a tab feature in the workspace.
The tab feature is to cut out some portions with help of the ‘Normal Cutout’ command. There will be a sketch that acts as a reference cum support to the ‘Normal Cutout’ command.
Bend is used to bend a certain portion of the ‘Tabbed’ portion. To use the feature a bend line or boundary is made using a sketch on the surface of the tabbed portion.
Flanges are created on the bent edges. The direction of each flange is selected accordingly.
The break corners are introduced in the sharp corners of the flanges, to make it smooth. By removing the sharp corners, the production process can be made smoother and easier.
The ‘Unbend’ is used to unfold the bends and flanges. By using the ‘Unbend’ command the design can be flattened. This helps to use more features on the part.
The ‘Hole’ feature is used to make the holes on the flattened part. The reference to the
The ‘Dimple’ is used to make a punch mark on the unfolded part. For creating a ‘Dimple’ a sketch is used as a reference.
The ‘Bead’ command is used to make bends on the sheet metal surfaces. The surface or periphery for the part bends into the cavity with reference to the sketches used to make ‘Dimple'.
The ‘Rebend’ command is used by selecting all the bends and folding the part back to its initial state.
‘Flat Pattern’ is used to add flattened view in the standard model views.
Front View
Top View
Side View
Isometric View
Flatten Drawing
