Advanced Sheet Metal Design Using NX Cad Challenge_2_Box Assembly
BOX ASSEMBLY
OBJECTIVE
Here the Main objective is to Prepare the box Assembly from the scratch by using different Sheet metal Features in NX CAD software.That box Assembly includes Box Body,Top Lid,Hinges.
INTRODUCTION
- Sheet Metal Fabrication is the process of forming parts from a metal sheet by punching, cutting, stamping, and bending.Sheet metal parts are known for their durability, which makes them great for end use applications (e.g. chassis). Parts used for low volume prototypes, and high volume production runs are most cost-effective due to large initial setup and material costs.
- Because parts are formed from a single sheet of metal, designs must maintain a uniform thickness. Be sure to follow the design requirements and tolerances to ensure parts fall closer to design intent and cutting sheets of metal.
Bending
- Bending is a process whereby a force is applied to sheet metal which causes it to bend at an angle and form the desired shape. Bends can be short or long depending on
what the design requires. - Bending is performed by a press brake machine that can be automatically or manually loaded. Press brakes are available in a variety of different sizes and lengths (20-200 tons) depending on the process requirements.
- The press brake contains an upper tool called the punch and lower tool called the die between which the sheet metal is placed.
- The sheet is placed between the two and held in place by the backstop. The bend angle is determined by the depth that the punch forces the sheet into the die. This depth is precisely controlled to achieve the required bend.
- Standard tooling is usually used for the punch and die. Tooling material includes, in order of increasing strength, hardwood, low carbon steel, tool steel and carbide steel.
DESIGN METHODOLOGY
FLOW CHART FOR DESIGNING BOX ASSEMBLY
IMAGES OF THE BOX ASSEMBLY
Conclusion
By performing this challeng i learnt that what are the error occured when you perform the features(Tab,Flanges,Hemminng Flange,Normal cutout,Dimple,unite)and how to resolve them,and also the proper setup that is used for perticular type of design.