Week 9 - Project - A pillar Design with Master Section

Aim :  To create A pillar design with given master section.

Objective :

• To create class B and class C surface .
• To do draft analysis .
• To create a dog house according to given master section and following design rule.
• TO perform draft analysis .
• To make report of it .

Introduction :

Class A surface :

• It is asthetic part of car created through scaning of clay model .
• This is the input CAD model for part design .

Class B surface :

• It is surface for engineering advancement .
• It is created at the thickness value of component toward inside .

 Class C surface :

• class C surface is created by joining class A and class B surface .

A pillar  :

• The structure of automobile various support like roof , pillar and floor .
• The A pillar are the first set of upright section on a car body that links the lower body to the roof of the car .
• It act as a major support structure during impacts and it is also a median to support the windshield of the vehicle.

Master Section :

• master section are the guides for the design requirement which decide the component packaging after the styling surface.

Methodology :

• checking continuity of surface.
• Tooling axis.
• Draft analysis.
• Class B surface.
• Class C surface .
• Making solid body .
• creating dog housing according to master section .
• Draft analysis of final product .

Tooling axis :

• The direction in which the mould open and close is called tooling direction.
• Extract the base and create the point at the center .
• The main tooling axis is created by bisecting method  .

Given class A surface :

Tooling axis :

B surface creation :

• offseting class A surface inward by 2.5 mm which is the thickness .
• By ofsetting class A surface , some patches are created .
• repairing it through join , extrude ,sweep , multiple extract , trim  command.

 

Final Class B surface :

 

 Creation of C surface :

• Boundary of class A surface is extracted and middle portion is also extracted .
• Sweep command is used to create C surface at 90 degree of class surface .
• class C and class B are trimed and join with class A surface .

Creating solid body :

Finally solid is body is created by using close surface command .

Draft analysis :

• First the material mode is selected in custumize view swction.
• Now click on the compass tab and align it with tooling axis .
• Now click on the lock .
• click on the surface .
• Surface colour shows green , which mean that the it has more than 3 degree angle , which is good for manufacturing .

Class A surface :

 

Final body :

Different views are as :

Isometric view :

Front view :

Side view :

Top view :

side core axis :

• The side core axis is created normal to the plane formed with master section .
• Dog house inner walls and all other rib draft analysis is cleared using side core axis.

Dog house :

• The main purpose of dog house is to avoid sink mark to house various other engineering features .
• Its wall thickness at the intersection of the part should be 40 % or less than the main wall.
• The height should be between 3-6 mm.

 

Draft analysis of body with dog house :

 

Different views:

Isometric:

 

front :

right :

Tree structure :

 

Publication :

Conclusion:

• Created class B surface and class C surface .
• crestred engineering features .
• Perform draft analysis .