Week 9 - Challenge 3 - Bumper

Aim : - To Create a Bumper From Class A Surface With desgin rules.

Tool Used :- Catia V5

Theory: -

A bumper is a structure attached to or integrated with the front and rear ends of a motor Vehcles, to absorb impact in a minor collision, ideally minimizing repair costs. Stiff metal bumpers appeared on automobiles as early as 1904 that had a mainly ornamental function. Numerous developments, improvements in materials and technologies, as well as greater focus on functionality for protecting vehicle components and improving safety have changed bumpers over the years. Bumpers ideally minimize height mismatches between vehicles and protect peds. from injury. Regulatory measures have been enacted to reduce vehicle repair costs and, more recently, impact on pedestrians.

The Class A Given Was As follows.

Step 1. Tooling Axis Creation.

Tooling Axis determine the draft to be given to a plastic product in oder to be manufactureable. 3 deg is nominal draft angle

it is created keeping in mind that all sides should be Cleared in Draft Anaylisis. like below image.

Step 2 Class B Creation.

Offset the Calss A by 3 mm which is the product thickness.

then solve the error like missing fillets and abnormal surface

Abnormalities

Step 3 Class C Creation

Create Vertical flanges from class a surface . there are tow types the surface which are perpendicular to tooling axis will get a draft of three degree . while the surface parallel to tooling axis will et 90 deg

after using sweep command extrapolate them and the trim togeter to create a single unit

Step 4 Final Trim

Join the class C surface with Class A then trim the whole with class B surface and you will get a closed body.

Then using Close body Command create a soild body.