Challenge

Advanced Sheet Metal Design Using NX Cad Challenge_6_Bracket

SSabhavath Eswar Naik16 Mar 2024

ADVANCED SHEET METAL DESIGNING OF BRACKET USING NX CAD

Objective:-

The wholesome purpose of this project is to design a complex-shaped bracket by reading the 2D drawing of the same and preparing the 3D-based geometry of the bracket using advanced sheet metal tools in NX CAD.
To get knowledge of how to read the 2D drawing which dimensions to be considered use different views to get an idea about the final product, also the application of sheet metal features available in NX-CAD.

Introduction:-

Sheet metal:-

The sheet metal is formed by an industrial process into thin, flat pieces. Sheet metal is one of the fundamental forms used in metal working, and it can be cut and bent into a variety of shapes. The metals which are less 6 mm thickness are considered as sheet metals. The sheet metal is available in flat pieces or coiled strips.

The various forming processes that are used to deform the sheet metals are -

Bending
Curling
Deep drawing
Hemming and Seaming
Punching
Blanking and Peircing
Rolling, Spinning and Stamping

Sheet metal is used in automobile and truck bodies, airplane fuselages and wings, medical tables, roofs for buildings and many other applications.

Design methodology of Bracket:-

Feature used in the design of the Bracket:-

Sketch:-

This the basic or common feature use in any type of modeling but it plays a vital role as it is the foundation of our part model. NX-CAD provides several sketch entities and tools for creating sketches such as line, arc, rectangle, spline, circle, ellipse, polygon, etc. In the case of our bracket, I have used sketch entities like rectangle, line, arc.

Contour Flange:

This is used to create a base feature by extruding the sketch along a vector or it adds material along the edge or chain of edges of the sketch by using this feature many complex shapes can be easily created by just creating the sketch of the edge and extruding it.

Normal Cut-Out:

This feature cuts or removes material from an existing solid body by projecting the sketch along with the model and then cuts perpendicular to the faces which intersect the projecting sketch.

Break Corner:

It rounds or breaks the sharp corner of the tab created thereby providing a smooth round profile to the corners, it is been provided to give aesthetic look to our part but furthermore its main function is to provide safe and easy handling.

Unbend:

It is used to create a flat sheet of our sheet metal model, it does by unbending the bend and material adjacent to the bend.

Bead:

It lifts material along a contour of the sketch thereby acting like a stamping tool.

Rebend:

It again restores the bends given to the model previously and any other features added to the model after unbending.

Hole:

It is used to create single or multiple holes by just providing the position of points at which the holes are to be generated of the required size. We can also create special holes such as counterbore or countersunk.