Advanced Sheet Metal Design Using NX Cad Challenge_2_Box Assembly

Advanced Sheet Metal Design Using NX Cad

Box Assembly

Introduction

In this project, we are to learn Box Assembly using NX Cad for modeling. Box, lid, hinge are modeled as part of Box Assembly. Siemens NX is a cutting-edge software that is highly useful for the manufacturing sector. It provides many applications like sheet modeling and modeling and drafting.

NX Sheet Metal contains a powerful set of tools to design and optimize sheet metal parts. Standard bending calculations, sheet metal features, and advanced analysis tools all contribute to improving quality and reducing the cost of sheet metal parts.

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, the most common of which is straight brake sheet metal forming.

The drafting tool is used to get the technical sketch of a box assembly.

2.Tools / Features Used

1. Tab: Tab is the feature that helps to extrude a sketch or to give thickness to a sketch. Tab also adds material to the plane face.
3. Cutout: It helps to cut out material from a surface. Sketches are made on the surface. It can be lines, curves, or closed sketches to cut out material from the surface.
4. Bend: It helps to create bents between the surfaces based on the reference lines. Modifies the model by bending material on one side of a sketch line adding a bend between two sides.
5. Unbend: It helps to unfold the model surfaces and exhibit all surfaces to a plane. It flattens the bend.
6. Flange: Flanges are used to create a bend between two walls. The flange can only be made on a straight edge. It can be bent at any angle in different directions.
7. Hole: To create incisions on the surface based on the requirement. Closed sketches are made on the surface to create holes.
8. Dimple: Lifts the material inside the sketch. The sketch is stamped on the surface of sheet metal.
9. Bead: Lifts material from the surface based on the sketch we provide. The sketch is stamped on the surface of sheet metal.
10. Rebend: It helps to fold back the surfaces as they were. Bend and Rebend are the opposite tools that help in the unfolding and folding of surfaces.
11. Flat pattern: Creates flat pattern features from formed sheet metal. Creating a flat solid allows the designer to quickly get a flattened model of the bent sheet metal part. This tool can be extremely useful to measure the total area of the sheet metal required for the component.
12. Break Corner: It helps to round up the sharp corners or add chamfers. It works in a similar way as fillets.
13. Draft: After completing the final model drafting helps to get a technical drawing of the component at ratio.
14. Hem: Hem flange is used to fold the edge of sheet metal over to itself at a particular bend angle.
15. Unite: it is used to combine the two or more solid bodies into one.

Design Process

1. A rectangular sketch was made in the XY plane.
2. 1mm thickness was added using the tab feature which helps to create a rectangular sheet of 1mm thickness.
3. Flanges were made at two opposite edges of the sheet. Another flange was added to the side of the flanges made.
4. The closed corner was made with the flanges made.
5. Bent outside flanges were made at the ends of the flange and hem flanges were added to make a joint between those sheets.
6. Mirrored the body to form the box. Hem flanges were added to the edges of the box.
7. A datum plane is made at an offset distance. Using the project curve and tab feature to form a lid for the box.
8. Hinges are designed with the help of tab, flange, hem, and cut-out features.
9. Drafting is used to get technical sketches in the end.