Week 9 - Project 1 - Door Trim Lower with Engineering Features

AIM: To create 4 way locator,2 way locator and heat stakes on doo trim lower.

3-2-1 PRINCIPLE:

A work-piece free in space can move in an infinite number of directions. For analysis, this motion can be broken down into 12 directional movements or "degrees of freedom". All 12 degrees of freedom must be restricted to ensure proper referencing of a work-piece.

4-WAY & 2- WAY LOCATORS, HEAT STAKES CREATED ON DOOR TRIM LOWER:

WHAT IS HEAT STAKING?

Heat staking is the process to attach two separate components together by melting the base plastic materisl into a shape that will hold the secondary component. It’s a permanent attachment method that does not require any additional material such as an adhesive or a solvent to make the permanent bond. The only addition is the heat applied to melt the plastic and a tool to shape the plastic to form the mechanical connection.

Heat staking can be done with a precise and rapid operation that also offers repeatable results every cycle. Manufacturing machine can be developed to complete multiple heat staking operations at once to decrease cycle time. The stakes don’t have to be parallel which makes the design options limitless.

Heat staking is a great option that is comparable in strength and durability to other operations involving secondary fasteners without extra cost. These connections can also resist corrosion in harsh environments.

REASONS FOR HEAT STAKING:

1.Mutiple staking shapes for different benefits.

2.Excellent durability.

3.No extra materials are needed.

4.Increased efficiency.

5.Easy Maintenance.

2-WAY AND 4-WAY LOCATORS:

A 2-way locating pin restricts motion along 1 axis (or 2 degrees of Freedom), like a round pin in a slot. Likewise, a 4-way pin restricts 4 degrees of freedom along 2 axes. A round locating pin located concentrically in a hole is a common application of a 4-way pin, and helps to further secure the piece.

CONCLUSION: The 4 way and 2 way locator and also heat stakes has been created following all the plastic design guidelines.