Advanced Sheet Metal Design Using NX Cad Challenge_7_ Metal bracket-II
_DESIGN AND MODELLING OF SHEET METAL BRACKET-2 BY USING IN NX -12_
OBJECTIVE :
To design and model the sheet metal bracket-2 in nx -12 by using some feature and tools.
To learn how to design a sheet metal bracket-2 from a given drawing .
To master the user interface and basic featutres of sheet metal application in nx -12 like contour flange ,normal cutout ,break corner ,unbend ,bead, rebend ,hole ,advanced flange guseet.
INTRODUCTION :
Sheet metal design and fabrication
sheet metal fabrication is the process of forming part from a metal sheet by punching , cutting ,stamping, and bending.
3d cad files are converted into machine code ,which control a machine to precisely cut and forms the sheet into final part .
Sheet metal part are known for their durability ,which makes them great for end use application .part used for low volume
Prototypes and high volume production runs are most cost- effective due to large initial setup and material coasts.
Because part are formed from a single sheet of metal ,design must maintain a uniform thickness.be sure 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 / feature used while designing the sheet metal bracket.
1 contour flange - in siemens nx sheet metal contour flange command used to create a base feature by extruding a sketch along
a vector or adds material by sweeping a sketch along an edge or chain of edge.
2 normal cutout-normal cutout command extract volume from sheet metal production principle .cutting face will be perpendicular to the sheet metal surface
3 breaK corner - this feature is used to smoothen the harmful corner of the sheet or to give an attractive look to the part
4 un bend - this feature is used to flatten the sheet metal part for further design operation
5 re bend - rebend feature is used to get the original bend shape after performing operation like a dimple.
6 advanced flange - this command is used to add a flange along an edge using a bend angle or a referance face the edge and reference face can be curved
this command is useful when we want to create non - linear flanges,or when we work with sheet metal support structure in complex assemblie we can use existing geometry as a reference to define the flange dimension .
7 gusset -gusset are stiffening feature created across a bend to reinforce the sheet metal part .
8 flat pattern - this feature is used to create an instance of the flat shape and size of the sheet metal that required to create the final part.
drawing
conclusion :
sheet metal bracket-2 is designed sucessfully in the nx -12 sheet metal environment .
basic feature of the sheet metal environment of nx-12 like sketch ,contour flange ,normal cutout, break corner, unbend ,rebend , hole , advanced flange , gusset and the flat pattern are learned and applied in design.