Advanced Sheet Metal Design Using NX Cad - Casing Design

ADVANCED SHEET METAL DESIGN OF METAL CASING USING SIEMENS NX CAD

OBJECTIVE:

• To design a sheet metal casing using Siemens NX Cad.
• To create a drafting of the same part in A4 sheet.

INTRODUCTION:

Sheet metal is a metal formed by an industrial process into thin, flat pieces. Sheet metal can be cut and bent into a variety of shapes. Countless everyday objects are fabricated from sheet metal.

NX formerly known as "unigraphics", is an advanced high-end CAD/CAM/CAE software. NX Sheet Metal provides a set of tools within the NX design environment that allows for simple and fast design of sheet metal parts.

DESIGN METHODOLOGY:

DESCRIPTION:

Tools & their functions:

SKETCH: It is used to create a profile

TAB: It is used to create the base feature of the sheet metal.

FLANGE: It is used to create a extended part of a sheet part.

UNBEND: It is used to unbend the sheet metal by taking any one face as a stationary face.

REBEND: It is used to rebend the sheet metal.

DIMPLE: It is used to lift an area of the model inside a sketch that simulates a stamping tool.

BEAD: It is used to lift material along the contour of a sketch.

FLAT PATTERN: It is used to create a 2D representation of the flattened 3D sheet metal part.

Order of Usage of tools:

• The sheet metal preferences are set as required.
• A required sketch is drawn in the XY plane.
• The base part is created using the TAB command.
• NORMAL CUTOUT feature is used to cut a portion the sheet metal.
• BEND tool is used to bend the sheet metal.
• FLANGES are added to the ends of the bends.
• BREAK CORNER tool is used to create a smooth edge at the sharp corners.
• UNBLEND tool is used to unbend the whole sheet metal.
• After unbending, four SCREW CLEARANCE HOLES are made at the edges of the sheet metal.
• An area of the casing surface is lifted using the DIMPLE tool for the drawn sketch.
• Four BEADS are used to lift the material along the contour of the sketch.
• Finally, the FLAT PATTERN tool is used to create a 2D representation of the flattened 3D sheet metal part

STANDARD VIEWS:

• FRONT VIEW:

• TOP VIEW:

• SIDE VIEW:

• BOTTOM VIEW:

• ISOMETRIC VIEW:

• DRAWING SHEET:

CONCLUSION:

The sheet metal casing is successfully designed using Siemens NX Sheet metal Workbench.