Advanced Sheet Metal Design Using NX Cad_Box Assembly
Title of the Project:
Advanced Sheet Metal Design of BOX_ASSEMBLY.
Objective:
Designing and Drafting of the BOX_ASSEMBLY sheet metal part using Siemens NX Sheet Metal Application.
Introduction:
Siemens NX is a software used for multiple engineering disciplines like CAD/CAM/CAE modules.
NX Sheet Metal Design is used for Design and Drafting of Sheet metal parts with its user friendly handy tools that converts the input sketches to desired design requirements and checks for the manufacturing feasibiltiy of the designed sheet metal part by flattening the part. The following tools are used and their description as follows:
TAB: Creates a base feature by extruding a sketch along a vector by a thickness value, or adds material to a planar face. Additional planar sections can be added to generate bends as part of the base feature.
FLANGE:Adds a flat flange at an angle to a planar face and adds a bend between the two.
CLOSED CORNER: Closes a corner where two adjacent flanges meet by extending the bends and flanges.
HEM FLANGE: Modifies the model by folding the edge of a sheet metal flange over onto itself for the purpose of safe handling or to increase edge stiffness.
MIRROR BODY/ FEATURE: Mirrors the body OR feature along a defined plane.
DIMPLE: Lifts an area of the model inside a sketch that simulates a stamping tool.
UNBEND: Flattens a bend and the material adjacent to the bend.
REBEND: Restores an unbend feature to its previous bent state, along with any features added after the unbend feature.
BREAK CORNER: Rounds or Chamfers a sharp corner of a tab or flange.
DESIGN METHODOLOGY:
DESCRIPTION:
1) Create a Rectangular sketch on the front plane and apply Base TAB to the sketch. Add Flanges on all four edges of the TAB part as required. Add Closed corner tool to cover the flange part.
2) Use Hem Flange on the Flanges added as required and Mirror the body with a centred plane and Unite the bodies.
3) Add Dimple on one side of the box part and Mirror the feature with a centred plane. Add Dimple on Bottom face of the box.
4) Unbend and Re-Bend all the faces. Add Bead on four corners of bottom face of box.
5) Add Hem flange on top face of all four flanges of the part. Add TAB on smaller side of the box and apply Flanges as required.
6) Add Hem flanges to the flanges applied. Use Break corner on the edges of the parts. Use Mirror body of all the Tab, Flanges and Hem flanges created to the other side of box.
7) Finally, perform Unbend and Re-bend operation.
CONCLUSION:
BOX ASSEMBLY Sheet metal part is designed with the use of sheet metal tools like Flanges, Hem Flanges, Bead, Dimple, Unbend, Re_Bend. By this, learned to apply sheet metal operations as required for the Box_Assembly part.
Please find below shareable google drive link of the BOX_ASSEMBLY part:
https://drive.google.com/file/d/1UQ2ae10UMHF9Fy-GhLZL9jVmO2r_Qzf_/view?usp=sharing