Challenge

Advanced Sheet Metal Design Using NX Cad Challenge_2_Box Assembly

RRitik Sonkamble5 Nov 2022

TITLE:- Metal Box Assembly Using Advanced Sheet Metal options in NX Cad

OBJECTIVE:-

Metal Box Assembly fabrication using NX cad command

INTRODUCTION :-

These basic guidelines for sheet metal fabrication include important design considerations to help improve part manufacturability, enhance cosmetic appearance, and reduce overall production time.

Sheet Metal Fabrication is the process of forming parts from a metal sheet by punching, cutting, stamping, and bending. 3D CAD files are converted into machine code, which controls a machine to precisely cut and form the sheets into the final part.

Sheet metal parts are known for their durability, which makes them great for end use applications (e.g. chassis). Parts used for low volume prototypes, and high volume production runs are most cost-effective due to large initial setup and material costs.

Because parts are formed from a single sheet of metal, designs must maintain a uniform thickness. Be sure to follow the design requirements and tolerances to ensure parts fall closer to design intent and cutting sheets of metal.

DESIGN METHODOLOGY

DISCRIPTION / Explanation of Features Used in modelling

Use the Tab to Creates a base feature by extruding a sketch along a vector by a thickness value, or adds material to a planar face.
Use the Normal Cutout command to cut material by projecting a sketch onto the model and then cutting perpendicular to the faces intersected by the projection.
Use the Bend command to modify the model by bending material on one side of a sketch line, adding a bend between the two sides. You can create a bend on a planar face of a sheet metal body.
Use the Closed Corner command to modify two flanges in one operation and to close the corner where the two flanges meet. During flattening, the corner and relief geometry are made appropriate for a flat pattern.
Use the Flange command to create a single flange instance or multiple instances by selecting a single or multiple base edges.
Use the Unite to Combines the volume of two or more solid bodies into a single body.
Use the Break Corner command to round or chamfer sharp corners of a tab or flange.
Use the Unbend command to unbend a portion of the part to construct cutout features, hole features, or deform features across a bend. You can later reform the bend to represent the true formed state of the model.
Use the Dimple command to lift an area of the model inside a sketch that simulates a stamping tool. You can create an indentation in a sheet metal part using a sketched section as the dimple outline.
Use the Hem Flange command to modify an edge of a sheet metal part by folding it onto itself for safe handling or to increase the stiffness of the edge. The hem flange is always created as a secondary feature on a base part.
Use the Bead command to lift material along the contour of a sketch that simulates a stamping tool. Beads can also be created to stiffen sheet metal parts.
Use the mirror feature Copies a feature and mirrors it across a plane.
Use the mirror BODY to Copies a body and mirrors it across a plane.
Use the Rebend command to return an unbend feature to its previous bent state. Any features added after the unbend operation are properly repositioned during the rebend operation.
Use the Flat Pattern command to create a 2D representation of the flattened 3D sheet metal part.
The Drafting application is designed to allow you to produce and maintain engineering drawings which comply with major national and international drafting standards.