Challenge

Sheet Metal Design of Odd Shaped Enclosure

BBanala Sumith20 Jan 2021

TITLE: Advance sheet metal design of Odd shaped enclosure.

OBJECTIVE: To design an Odd shaped enclosure by using the NX CAD tool.

INTRODUCTION:

Sheet metal is a comprehensive cold working process for metal sheets (usually below 6mm), including shearing, punching, folding, riveting, forming (such as car body structure).

SHEET-METAL NX: The NX sheet-metal interface has a set of tools that help in designing and modeling the sheet to our required form.

SOLID TO SHEET-METAL: This operational command helps in converting the solid body to the sheet with the access to use the same sheet metal features in the converted part down line.

EXTRUDE: A solid body will be created by selecting the sketch and sweeping along the desirable vector.

FLANGE: A bend is created by adding the material to an edge by using the flange command feature in bend (family).

JOG: This can be activated by selecting it from Bend (more gallery). It actually creates a bend portion upon our requirement by assigning the required height.

BEAD: This feature is activated by selecting the sketch and assigning the required radius of it from the punching group (BEAD COMMAND).

HOLES: This creates a-holes by selecting the command from the design feature group and it can be activated by assigning types of holes on our requirement.

UNBEND: It actually activates by selecting it from the FORM group and flattens the sheet.

REBEND: This feature is activated by selecting the command from the FORM group and makes the part into it original shape by applying a single stationary face.

DESCRIPTION:

DESIGN METHODOLOGY:

PROCEDURE:

Open the NX cad software and create a new file by choosing a sheet-metal module by giving Odd shape enclosure as Filename.
By selecting the XZ plane draw a sketch and add extrude to the sketch of 200mm distance.
Then convert this solid body to sheet-metal by selecting the feature called Sheet-metal from solid and select the appropriate edges to get the required model.
Add the flange material to an edge of a sheet metal body with a length of 20mm at 90deg.
Select the JOG command a dialogue box appears, draw the required profile, and by giving the height of 20mm create a bend portion in the desired form.
Unbend the sheet body by selecting the stationary face to add the modeling features to it.
Create bead profiles as per the requirements from the rule book.
Make the holes on selecting the points with a 10mm of diameter as mentioned in the rule book
REBEND the unbended portions.
Then create a flat pattern on selecting the top face of the sheet body.
Go to model views to view the flat pattern mode.
And create a drawing sheet by selecting the drafting mode from the application.