Advanced Sheet Metal Design Using NX Cad Challenge_1_Casing Design

SHEET METAL CASING DESIGN USING NX CAD

OBJECTIVE

The Main aim of this project is to design sheet metal casing using Siemens NX Sheet Metal Application.

INTRODUCTION

• NX Sheet Metal provides a set of tools within the NX design environment that allows for simple and fast design of sheet metal parts, dependent on their material and manufacturing process.

• With NX Sheet Metal, formed and unformed representations of the parts are created closely following the industry workflows and best practices for bending calculations, tooling, and sheet metal features.

DESIGN METHODLOGY

DESCRIPTION

1)Setting Preferences:

The First phase is to set up the sheet metal application in NX CAD. Then sheet metal preferences are validated and correct settings were applied.

2)Base Metal Preparation:

Step1

The Second phase is to prepare the base part of the casing.

A rectangular sketch is created in XY plane and a base TAB is along the planar surface with thickness parameters.

Step2

The Next step is to add a cutout at the front side of the tab using NORMAL CUTOUT option. This removes the material from the base.

3)Sheet Metal Bending:

Step1:

The Next phase is to sketch a line with specified distance from the two adjacent edges of the base.

Using the sketch profile the parts BENDING operation is applied along the line at a specified angle

Step 2:

The next step after bending is to add Flanges that adds flat bend pattern to the sheet metal

Finally the edges are applied Break corner Option to create a smooth tooling path during manufacturing.

4)Punch Hole& Dimple:

Step 1:

The bend parts are unbent using unbent option and sketch is created along the four corner flanges to create a Hole.

The Holes are added to provide mounting reinforcements to the casing and a Simple Clearance Hole is applied throughout the body.

Step2.

The Next step is to add a sketch to create Dimple. The Dimple creates an punch that elevates the surface perpendicular to the tab.

The Depth is specified as per requirement and the and the reference and side walls are given as inside and material inside respectively

Step 3

The Next step in this phase is to add Beads with circular cross section and the radius and depth are specified as per requirements.

Then the feature is mirrored along the planes.

5)Flat Pattern:

In this phase the casing is bend again using rebend and a Flat pattern is created by selecting the central flat face

This model view is then used for Drafting

6)DRAFTING

In this final phase the model is drafted to A4 Drawing sheet and the part is saved.

Some of the Images of the model are attached below in different model views

DRAWING SHEET

CONCLUSION

In this way Sheet Metal Casing is designed using NX Sheet Metal Application and grabed some of the sheet metal features and its application.