Advanced Sheet Metal Design Using NX Cad Challenge_7_ Metal bracket-II

Title

Creating a Metal Bracket from the 2d Drawing

Objectives

A Metal Bracket from 2d Drawing is to be created using NX sheet metal application.

Introduction

Siemens NX software is a flexible and powerful integrated solution that helps us deliver better products faster and more efficiently. It is used for: Design (parametric and direct solid/surface modelling), Engineering analysis (static; dynamic; electro-magnetic; thermal, using the finite element method; and fluid, using the finite volume method) and Manufacturing finished design by using included machining modules. Here we design a sheet metal bracket from a given 2d drawing.

Design methodology

Description

The tools used while the procedure is explained below. When we create a new sketch, a dialog box pop-ups asking us to define the Sketch Plane. The screen will display the sketch options. We can choose the Sketch Plane, direction of sketching and type of plane for sketching. When we create a sketch using the Create Sketch dialog box, we can choose the plane on which the sketch can be created by clicking on the coordinate frame as shown. This will highlight the plane we have selected. We use sketch curve tool bar sketch. This toolbar contains icons for creating the common types of curves and spline curves, editing, extending, trimming, filleting etc. Each type of curve has different methods of selection and methods of creation.

Line option will selectively create only straight lines. Studio Spline can create basic spline curves with poles or through points with the desired degree of the curve. Dimensional Constraints: The degrees of freedom can be eliminated by giving dimensions with fixed entities like axes, planes, the coordinate system or any existing solid geometries created in the model. These dimensions can be linear, radial, angular etc. We can edit the dimensional values at any time during sketching by double-clicking on the dimension. Geometric Constraints: Besides the dimensional constraints, some geometric constraints can be given to eliminate the degrees of freedom. They include parallel, perpendicular, collinear, concentric, horizontal, vertical, equal length, etc

Now we can look into other design procedures mentioned in methodology. Primarly we create 2D sketch and create a contour flange as given below.

After creating the solid body, we use normal cutout command to remove excess part from the model.

Now we can unbend the model creating more cut out and features as represented below.

More features are added to the model using break corner command.

Advanced flange is a command used to create a flange represented below.

Now finally gusset feature is also added to the metal bracket.

Final images of metal bracket are given below.

Conclusion

Metal bracket has been modelled using NX from given 2D dawing.