Week 9 - Challenge 3 - Bumper

Bumper Design

Aim:

To design the Bumper plastic component by using A surface and do the draft analysis on Bumper.

Objectives:

· Create a tooling axis by using intersection lines.

· Creation of class B surface by using extract and offset.

· Creation of class C surface by creating sweep from A surface and extrapolate from B surface.

· Creating a solid part by using of close surface.

· Draft analysis of Bumper.

Introduction:

A bumper is a structure attached to or integrated with the front and rear ends of a motor vehicle, to absorb impact in a minor collision, ideally minimizing repair costs. Every plastic components have a A,B,C surface. A surface is the basic surface. By using the A surface only, we can design the plastic components. B,C surface creating only by using of A surface. Tooling axis is very important to design a component. For draft tooling axis is essential. For C surface creation from B surface the sweep created by use of tooling axis.

Parameters:

Thickness of component -- 2.5mm

Draft angle of component – 3^o

Class A surface:

This picture shows the class A surface. First, we need to check the boundary. If it is not okay, then A surface needs to be modified.

Tooling Axis:

Tooling axis needs to be created by using of A surface by using intersection lines by bisecting method.

Draft Analysis of Class A surface:

Draft angle – 3deg.

Class B surface:

This picture shows a class B surface. This was created by extract and offset the A surface and splitting the extract surface. Finally extrapolate the component for making closed sheet to make solid.

Class C surface:

This picture shows the class C surface. This was created by use of creating sweep from A surface and trim with the B surface.

Solid Bumper Component:

Draft analysis of a Bumper: