Advanced Sheet Metal Design Using NX Cad Challenge_1_Casing Design
DESIGN and MODELLING OF SHEETMETAL CASING IN NX-12
OBJECTIVE:
To design and model the sheet metal casing in nx-12 using some basic features
To learn to create sketches on defined planes as per requirement.
To master the user interface and basic features of sheetmetal application in nx-12 tab flange,breakcorner,unbend,creatingholes,rebend,dimple,beadmirror,and flatpattern.
INTRODUCATION
sheet metal design and fabrication :
sheet metal fabrication is the process of forming parts from a metal sheet by punching ,cutting,stamping, and bending .
3d cad files are converted into machine code, which controls a machine to precisely cut and forms the sheets into the final part
sheet metal parts are known for their durability ,which makes them great for end-use applications parts used for low volume prototypes and high volume producation runs are most cost -effective due to large intitals setup and material costs.
Because parts are formed from a single sheet of metal , design must maintain a uniform thickness. besure to follow the design requirement and tolerance to ensure parts fall closer to design intent and cutting sheets of the metals
DESIGN METHODOLOGY/APPROACH:
DESCRIPTION:
Tools/features used while desigining the casing create.
Tab:
Tab is the basing feature in the sheet metal enviroment of nx-12 the tab is the initial or the startup stage of the design of the sheet metal component.by using the tab feature we create a base for sheetmetal component and decide the thickness of the sheet metal component and decide the thickness of the sheet metal which is then followed in the further steps of design.
normal cut:
its use to cut the sheet metal components by using normal cut .
3 BEND:
bend feature is used to part of the flat tab into the flange .it uses a sketch that includes bend lines bend can be created either side of the bend line.
4 Flange: flange feature is used to create an extended portion or bend to selected edge while creating flange we have to set different parameters such as lenth of the flangre , its angle ,length,other parameter like bend radius ,bend relief ,and neutral factor is also needed to be considered.
5 break corner : this feature is used to smoothen the harmful corner of the sheet or to give an attractive look to the part.
6 unbend: the feature is used to flatten the sheet metal part for further design operation .
7 hole: this feature adds holes to the sheet metal part .
8 dimple : this command is use to lift an area of the model inside a aketch that simulates a stamping tool.we can create an indentation in a sheet metall part using a sketched section as the dimple outline.the dimple command makes an indentation in the sheet metal part ,using a sketched section as its outline.
9bead : the bead is like raised rib in the sheet metal panel .its required that you have at least one sheet metal panel in the active part as well as an open or closed-loop sketch.
The bead is another feature that has only a button for option on the command bar.
10 rebend : rebend feature is used to get the original bend shape after performing forming operations like a dimple ,bead.
11 flattpattern : this feature is used to create an instance of the flat shape and size of the sheet metal that required to create a part.
IMAGE OF SHEETMETAL CASING DESIGNED IN NX -12 SHEETMETAL ENVIROMENT :
drawing sheet image
CONCLUSION :
1 sheet metal casing is designed successfully in the nx-12 sheet metal enviroment.
2 basic feature of the sheet metal environment of nx-12 like creating a sketch ,tab, flange, normal cutout ,breakcorner,bend,unbend,rebend,dimple,bead,and the flat pattern are learned and applied in design