Advanced Sheet Metal Design Using NX Cad Challenge_6_Bracket

DESIGN OF BRACKET IN SHEET METAL USING SIEMENS NXCAD

OBJECTIVE

To design a Bracket in sheet metal application under given geometry and measurements using the SIEMENS NXCAD software

INTRODUCTION

Sheet metal is metal formed by an industrial process into thin, flat pieces. Sheet metal is one of the fundamental forms used in metalworking, and it can be cut and bent into a variety of shapes. Countless everyday objects are fabricated from sheet metal. Thicknesses can vary significantly; extremely thin sheets are considered foil or leaf, and pieces thicker than 6 mm (0.25 in) are considered plate steel or "structural steel".

DESIGN METHODOLOGY

The design methodology of the Bracket is explained with the help of flow chart for easy and better understanding

FLOWCHART

DESCRIPTION

There are various tools used to design the Bracket in the sheet metal application in SIEMENS NXCAD they are described as follows,

Features Used

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 selection can be added to generate bends as parts of the base feature.

Normal cutout: Cuts material by projecting a sketch onto the model and then cutting perpendicular to the faces intersected by the projection

Bending: Modifies the model by bending material on one side of a sketch line, adding a bend between the two sides.

Flanges: Adding a flat flange at an angle to a planar face and adds a bend between the two

Contour Flange: Creates a base feature by extruding a sketch along a vector, or adds material by sweeping a sketch along an edge or chain of edges

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.

Jog: Modifies the model by lifting material on one side of a sketch line, adding a flange between the two sides

Breaking Corner: Rounds or chamfers a sharp corner of a tab or flange

Closed Corner: Closes a corner where two adjacent flanges meet by extending the bends and flanges.

Local Radius Analysis: Calculates geometric properties of selected points on curves, edges, and faces

Measure Distance: Calculates the distances between two objects, the length of curves, or the radius of an arc, circular edge, or cylindrical face.

Mirror Feature: Copies and mirrors it across a plane.

Mirror Body: Creates Associative copies of bodies, faces, curves, points and datums, and associative mirrored copies of bodies, within the same part.

Unite: Combines the volume of two or more solid bodies into a single body.

Unbend: Flattens a bend and the material adjacent to the bend

Hole: Adds a hole to one or more solid bodies in a part or assembly with options for counterbored, countersunk, and threaded.

Dimple: Lifts an area of the model inside a sketch that stimulates a stamping tool.

Beads: Lifts material along the contour of a sketch that stimulates a stamping tool

Datum Plan: Creates a datum plane used to construct other features.

Re-bend: Restores an unbend feature to its previous bent state, along with any features added after the unbend feature.

Flat Pattern: Creates a flat pattern feature from the formed sheet metal part

Drafting: Starts the drafting application, which provides tools to create and maintain drawings of the design model.

PROCEDURE

Draw a sketch and create a contour flange. Create a normal cutout with another sketch drawn. Apply break corner to the edges with the given radius. Draw a bead centerline and unbend the model and then create the bead.re-bend the model. check the local radius of the bend radius of the bead using the command local radius analysis. Create holes on the defined location. then use the measure distance feature to measure the distance between the holes. flat pattern is created for the model using the flat pattern command and then draft the flat pattern the sheet created.

PART IMAGES

Isometric View:

Top View:

Front View:

Right Side View:

Bottom View:

Back View:

Left View:

Detailed Drawing Sheet:

CONCLUSION

The Bracket is designed using the Sheetmetal application in the SIEMENS NXCAD.

Link:https://drive.google.com/file/d/1fL2vbhoKXUJQV8cVQtH73yG15v9Wv6-N/view?usp=sharing