Advanced Sheet Metal Design Using NX Cad Challenge_1_Casing Design

SHEET METAL DESIGN OF CASING USING NX-CAD

OBJECTIVES

1. To design casing in NX sheet metal.
2. To draft the casing.

INTRODUCTION

The sheet metal is a simple metal formed into thin and flat pieces .It is one of the fundamental forms used in metalworking and can be cut and bent into a variety of different shapes.

The NX CAD is formerly known as unigraphics is an advanced high end CAD/CAM/CAE software which has been owned since 2007 by Siemens PLM software.

In this design the casing is designed with the help of basic sheet metal features. It is designed using Siemens NX10.

DESIGN APPROACH:

DESIGN METHODOLOGY:

TOOLS AND FEATURES USED ON SHEETMETAL TO DESIGN CASING

1. Sketch
2. Tab
3. Cutout
4. Bend
5. Flange
6. Break corner
7. Unbend
8. Hole
9. Studio spline
10. Move curve
11. Dimple
12. Bead
13. Re bend
14. Drafting
15. Base view

    TOOL AND FEATURE DESCRIPTION

    1. SKETCH

    It is a 2d representation of a 3d part. It includes entities like line, rectangle, spline, circle, etc. It is a predetermined drawing with dimensions and relations.

    2. TAB

    It is the base part for any sheet metal design. Flanges can be made only from the tab edges.

    3. CUTOUT

    This command is to remove the desired shape of material. Removal sketch can be drawn on the sheet metal face, wherever required.

    4. BEND

    It is to bend the tab/flange by creating the line sketch. The bend can be like U, v or channel shape.

    5. FLANGE

    It is created with one or more edges at specified location. The minimum flange length must be atleast four times the thickness of the sheet metal. Bend radius is equal to the sheet metal thickness.

    6. BREAK CORNER

    This command gives a smooth finish over the corners of the sheet metal part.

    7. UNBEND

    It makes the part unbend, that is all the features done are made flat. This is useful while sketching on the corners and bend areas.

    8. HOLE

    This feature is to put a hole on the part. There were screw type hole with specified scre size and fit.

    9. STUDIO SPLINE

    It results in a set of splines after selecting the points for its path. It is used for making splines along the sketch.

    10. MOVE CURVE

    It moves or rotates your curve.

    11. DIMPLE

    It rises a drawn sketch from the base plate. This command doesn’t save material instead it maintains the rigidity.

    12. BEAD

    It lifts material along contour sketch.

    13. REBEND

    This command puts back all the bends already created also along with new features included while in unbent state.

    14. FLAT PATTERN

    It is done before drafting. It gives a flattened version of the sheet metal part.

    15. DRAFTING

    This command is to have 2D drawing of the sheet metal part created.

    16. BASE VIEW

    It specifies the location, orientation, view and scale of the part for drafting.

    CASING IMAGES

    BOTTOM VIEW

    

    SIDE VIEW

    

    TOP VIEW

    

    ISOMETRIC VIEW

    

    DRAFTING

    Creating a new draft on A4 size sheet of flat pattern#1.

    

    

    CONCLUSION

    The casing sheet metal part is created using NX10 software.