Advanced Sheet Metal Design Using NX Cad Challenge_1_Casing Design

                                                                                         SHEET METAL CASING DESIGN USING NX

OBJECTIVE

        The objective of this project is to be design a sheet metal casing with consideration of manufacturing parameters  and making a drawing sheet preparation for casing design .

      This project also make knowledge about how to design a sheet metal that equal to industries standard of advanced NX sheet metal application .

INTRODUCTION

         Sheet metal  is defined us the thin sheet which made by alloys according to  needed parameters .Those sheets are  undergoes bending , forming , cutting, enclosing etc .

             Sheet metal usage is increasing every day to life including kitchen appliances to rocket spacing every its used to fabrication of surfaces in every industries . Thin sheet metals are also known as coils and foils .

        Sheet metals  play a major role in automotive industries for making a surfaces of Every automobiles

   Siemens Nx formerly Unigraphics is a power full CAE/CAM/CAD  Tool  used for every phases of engineering including Design , Analysis , Manufacturing , A class surface design .

Design Approach /Methodology

            The design approach is sheet metal design in NX sheet metal work bench

FEATURES FLOW IN NX WORK BENCH

Sheet Required to design

                Sheet size = 60mm*50mm*1mm

Features and tools used for design

Sketch tools

1. Line tool - Line tool is used to create a straight line according to coordinate system
2. Rectangle - To create a rectangle on a coordinate system
3. Circle - create a circle according to face and plane which we selected

Sheet metal features

1. Tab- Tab feature is used to extrude a base sheet metal along to the selected coordinate system the thickness of the sheet metal is based on the preference which we make .
2. Normal cut out- Normal cut is used to make cut in the selected face or plane according to the geometry we create
3. Bend – In sheet metal basic principal is to be bending and unbend for the case bend feature used to make bend in sheet metal according to sketch
4. Flange- Flange is used to create a perpendicular  or angular  extend in sheet according the parameters which given as input
5. Break corner – It is used to create smooth edges or chamfering in the ending of sheet metal
6. Unbend - It used to make a flat sheet metal features which we make
7. Mirror – This feature used to make a mirroring of the feature according to the coordinate system
8. Hole – Hole feature is to create the holes in the parts or components like countersink ,counterbore and threaded bore operations
9. Dimple- Dimple is the feature used to lift the sketched area to assigned for making stamping process
10. Bead – It is same as dimple but it lifts the contour of the sketches to asses stamping
11. Flat Pattern- Flat pattern it creates a flat pattern according to the flat surface we selected

PROCEDURES TO MAKE CASING

• To create a base sketch in XY coordinate system as reference create a rectangular base as per given parameter
• In before all to create preference about making a sheet thickness and bend radius
• After making a base sketch in XY plane need to create tab
• Create a secondary sketch in the XY plane using cutout feature create a limits to through all it cut the specified parameter which we created
• After that make a parallel lines on a face of a tab using a bend feature as line as reference make a bend along with z axis
• Create a flange at the end of the bended area , Do the same for another end it create a flange in opposite direction
• Make a unbend by selected the adjacent side of flanges bending
• Make a line and point create a hole feature of H13 and screw size of M2  make a through all  Do this for same for another 3 flanges

Make  sketch for dimple

• After creating sketch on the face of flat surface make dimple feature which lift downwards to the surface
• Follow with dimple make a sketch on XY plane to create a bead with reference of coordinate system make mirror with a feature of bead to create a beat on four sides as per parameter
• After completing this process make a rebend feature to bend the same feature as like before

Finishing the all steps create a flat pattern option feature to make flat view

DRAFTING A SKETCH SHEET

Import a flat pattern view to the A4 drawing sheet in NX .In orient view make flat pattern view fixed with the sheet by rotation  

After making drafting save the sheet

STANDARD VIEWS MODELING

FRONT VIEW

RIGHT SIDE VIEW

TOP VIEW

BOTTOM VIEW

ISOMETRIC VIEW

 

DETAILED DRAWING SHEET OF MODEL

 

 

CONCLUSION

         End of the project its used to learn about fundamentals of knowledge about sheet metal forming including bending radius k factor and more in depth knowledge of sheet metal forming