Week 11 - Project - A pillar Design with Master Section

Aim:- A pillar Design with Master Section

OBJECTIVE:-  

Picture of the sketches with Sketch solving status’s geometry tab

Picture of the Detailed tree structure.

Picture of the 3D CAD

Create closed body 

Create a tooling axis and follow design rules.

Follow the Master section to create a flange

Follow the master section for thickness and to create the Closed volume.

Follow the master section to create Attachment features

The thickness of the Plastic to be 2.5 mm

CLASS A SURFACE:

Class A is an aesthetic surface with the highest quality finish.

Most Class A Surfaces for an Automotive Component are made using AUTODESK ALIAS.

It is taken as a reference by the Automotive Plastic Designer to create CLASS B, CLASS C surfaces.

TOOLING AXIS AND  SIDE CORE AXIS:-

The tooling axis is the direction in which a core or cavity of mold opens.

This Axis is very important to determine the orientation of the component in mold, core, and cavity design as well as to run the draft analysis of the component.

BISECTING METHOD:-

In this way first I create the point (between two line) in the extracted master section.

CLASS B SURFACE:

The thickness of the component as 2.5mm.

Now we need to create a B surface which will be similar to the A surface at an offset value of 2.5mm.

There are some discontinuities happened while offsetting the CLASS A surface so I repaired it to form a closed boundary by using the multiple extract, extrapolate, trim and fill surface commands and tools.

C SURFACE:

 C surface is created with help of A-Surface by using the Sweep(with reference surface) and Boundary command separately, finally joined together to get the  final C surface.

Then join the class A surface to the class C surfaces after that I trim out the joined A and C surface to class B surface to get the final object.

CLOSED SURFACE:-

DOG HOUSE

The dog house is an engineering feature used in plastic design.

Dog houses are used as a support feature. Sometimes other engineering features like snaps, locators, and screw bosses are mounted on them to increase their strength.

Dog houses are subjected to draft analysis to prevent breakage of the component during ejection from the mould cavity.

Dog house and other engineering components are built on the B-surface

Dog houses are designed to avoid SINK MARK created on the CLASS-A surface by screw bosses and to solve the length issues when giving screw bosses which need to be assembled to other components.

It is also useful when perpendicular screw bosses are required on the part to the tooling direction.

Make a rectangle to enclose the screw boss in it but make sure it is open from one side.

Sweep it with tooling axis as the pulling direction inwards.

Close the top face by using multi section surface.

Thicken it by 2.5 mm to the outward direction.