Advanced Sheet Metal Design Using NX Cad Challenge_2_Box Assembly
TITLE OF THE PROJECT: Advanced Sheet Metal design using NX CAD challenge 2 Box Assembly.
OBJECTIVE: To design a sheet metal casing design using Siemens NX sheet metal application.
INTRODUCTION:
1) Sheet metal: It is formed by an industrail process into thin, flat pieces, it is one of the fundamental forms used in metalworking and it can be cut and bent into a variety of shapes.
2) NX: It is formerly known as "Unigraphics" and is an advanced high-end CAD/CAM/CAE, which has been owned by Siemens PLM Software. Mostly it is used for design, engineering analysis, manufacturing.
DESIGN METHODOLOGY:
This can be explained by a flow chart:
DESCRIPTION:
BOX:
Step1: Start NX CAD. Then set global parameters as per requirements.
Menu --> Preferences --> Sheet Metal.
Step2: Design a base sketch for box and create a base with TAB option.
Step3: Use the FLANGE option to form side bodies of the box.
Step4: Then apply a CLOSED CORNER at the adjacent bends for both the sides.
Step5: After closing the corner, use HEM FLANGE to create U profile which self locks the sheet metal after bending.
Step6: Now MIRROR the body to form a replicate of the existing body.
Step7: Now UNITE the two bodies.(Existing body and Mirrored Body).
Step8: Now Create a sketch and make a dimple on the front and bottom side of the box and mirror it on the back side.
Step9: After that create a sketch for creating beads. Then select bead option with a circlular cros-section and give proper radius and depth and mirror it to make it four beads at the bottom.
Step10: Then use HEM FLANGE at top edges to create a U shaped corners which neglect the sharp edges and create a smooth and safer edge.
LID:
Step11: Create a datum plane at resp distance. Then design a base sketch for the lid and create a base with TAB option.
Step12: Use FLANGE to create the bends in the lids which seats on the sides of the box.\
HINGE:
Step13: Using the right side face of the box as a reference, create a base for the hinge using a TAB option.
Step14: Use BREAK CORNER option on the hinge base to avoid the sharp edge.
Step15: Then using the FLANGE and HEM FLANGE, create a circular profile with the dia where the hinge rod gets inserted to lock.
Step16: After creating flange, UNBEND the profile with the use of the UNBEND option.
Step17: Create a Sketch that has to be cut out from the profile with NORMAL CUTOUT.
Step18: Then REBEND the model and MIRROR it to get the best view of the model with the replication of the existing body.
Step19: Repeat the same steps for mating hinge by taking the top side of the lid as a reference for creating a TAB.
SCREENSHOTS OF THE MODEL:
ISOMETRIC VIEW:
FRONT VIEW:
SIDE VIEW:
TOP VIEW:
DRAWING SHEET:
CONCLUSION:
Thus the BOX assembly was designed with help of NX CAD tool and learned about the features involved in creating sheet metal.