Hood design-Week 2

                                                                                                                                                  DESIGN OF HOOD

ABSTRACT:

             The hood (American English) or bonnet (Commonwealth English) is the hinged cover over the engine of motor vehicles. Hoods can open to allow access to the engine compartment, or trunk (boot in Commonwealth English) on rear-engine and some mid-engine vehicles) for maintenance and repair.

OBJECTIVE:

         To create a 3D model of Hood parts and assemble of that parts  by using different tools & commends in NX CAD.

 DESCRIPTION OF TOOLS:

EMBOSS:

              Emboss we are using to made projecting a section along vector, we select a curve by using the tangent curve and select the all lines from point to point. Then we select the face which one to getting projection stop on curve.And select the embossed face.We do drafting with options for end cap lociation & shops.

LAW EXTENSON:

               It creats a law controlled extension from above sheet.

HEMMING DATA:

               Hemming data which connects the inner panel and outer panel with strong joint to using law make projection between three faces and strongly joint together.

BRIDGE CURVE:

               It creates a tengent blend curve between two objects.

EXAMINE GEOMETRY:

             Analyses a solid body, face or edge for conditions of interest like:- (tiny objects, problems in the data structure and self intersections) 

PARTS TO BE CREATED:

PANEL:

            A hood panel consists of two panels that are hemmed together to form the automotive hood assembly.

They are two panels,

• INNER PANEL:

            Inner panel is being inside of outer panel to safe the passengers from any accidental parameters and when a car hit the any body than inner panel sate the passengers and open up the air bages. In inner panel we using the components like:-striker and hinge assembly.

•  OUTER PANEL:

           This is the inner panel's upper part because outer panel smoother than inner panel so this makes car looks good. Outer panel and inner panel is strongly joints with each other to using hemmig.

LATCH:

            In general, the hood latch system starts with a release handle located on the left side of the driver's area. This handle is connected to an insulated cable that runs towards the front of the vehicle. The other side of the cable is connected to a latch under the hood that keeps the hood flush against the car's body.

HINGE:

             According to the present invention, a hood hinge mechanism is provided that allows a lawn and garden tractor hood to be pivoted between closed and open positions. In the closed position the hood generally encloses a compartment which houses an engine and other vehicle component.

MANUFACTERING PROCESS:

HEMMING:

               Hemming is a forming operation in which the edges of the sheet are folded or folded over another part in order to achieve a tight fit. Normally hemming operations are used to connect parts together, to improve the appearance of a part and to reinforce part edges.

                                            

 ASSEMBLY OF HOOD:

 CONCLUSION:

• Learn to use many commands like law extansen,emboss,bridge curve etc... 
• Lern to use NX CAD tools.