Advanced Sheet Metal Design Using NX Cad Challenge_1_Casing Design

casing standard views:

front view

side view

isometric view

drawing sheet

Report:

CASING DESIGN

Objective:

To create a 3D model of sheet metal casing using siemens NX.

Introduction:

In this project an accurate to scale model of sheet metal casing is created using Siemens NX in-order to understand and familiarize with different tools and methods of sheet metal design.

Design Methodology:

Description:

Siemens NX has a large set of sheet-metal tools. These tools have a wide range of applications.

For the casing design, the following tools and features are used:

1. Tab: The tab tool creates a base feature from a selected sketch. The direction of extrude can be adjusted manually. The thickness of the extrude can be edited locally or it can be set to the default global value provided in preferences => sheet-metal.
2. Bend: The bend tool creates a secondary feature on the base feature. It creates a bend on the selected body along the selected sketch. The bend radius is set globally. The bend angle can be adjusted manually from the tool window.
3. Unbend: This tool unbends/flattens a selected body along a stationary face. The features to be flattened should be connected to the stationary face.
4. Re-bend: The re-bend tool bends the selected parts of the body that were flattened using unbend tool.
5. Flange: The flange tool creates a flange along a selected edge and adds a bend of set radius on that edge. The flange angle and the flange length can be adjusted locally as per the user’s requirement. Other adjustments such as direction and material position (inside or outside) can be changed as per the requirements.
6. Dimple: The dimple tool lifts the selected face as per the drawn sketch. The face inside the sketch or outside the sketch can be lifted as per the design requirement. The lift distance, rounding radius and tolerance can be adjusted manually.
7. Hole: It creates a hole in the selected body. There are various options available for hole specifications such as drill hole, screw clearance hole, threaded hole etc. The holes are created on user defined sketch points. The dimensions and direction can be manually adjusted.
8. Bead: The bead tool is used to lift a surface along the selected sketch. It is similar to dimple tool but the bead tool can only be used with tangent continuous sketches. Any sketch with sharp corners cannot create a bead.
9. Mirror: Mirror tool is used to create a copy of the selected feature and its parent sketch along an appropriate datum plane.
10. Break corner: The break corner tool is used to remove sharp edges from the model. The edges can be blended (rounded) or chamfered. The dimensions of blend or chamfer can be modified locally.
11. Flat pattern: The flat pattern tool creates a flat pattern view of the body which can be imported in a drawing sheet.

The below image shows all the tools used for creating the casing model.

Casing Model Images:

Casing front view.

Casing isometric view.

Casing side view.

Casing top view.

Casing Model Drawing sheet:

Conclusion:

As per the mentioned steps in design methodology and using the tools mentioned above, the design of sheet metal casing model is complete.