Week 9 - Project 1 - Door Trim Lower with Engineering Features
HEAT STAKES:
Heat staking also known as thermoplastic staking is the process of joining two dissimilar materials together.
In heat staking we use local heating and cooling to raise the temperature of plastic components and allow plastic reforming to be carried out.
This reforming can be used in a wide variety of applications.
Heat staking Benefits:
Similar and dissimilar materials may be joined: metal to metal, plastic to plastic, metal to plastic
Accurate control operating within a small process window
Local heating resulting in no damage to surrounding materials
Processing of glass-filled materials
No mechanical vibration
Many heat-stake shapes possible through custom designed tools
2-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.
4 WAY & 2 WAY LOCATORS & HEAT STAKES - Student Projects
4-WAY LOCATORS:
4-way mean you prevent movement at 2 axes (+X, -X, +Y and -Y) on the plane. Generally, you have cylindrical pin on the fixture and circular hole at workpiece part.
4 WAY & 2 WAY LOCATORS & HEAT STAKES - Student Projects
Tooling Axis :
The direction in which the mold called the tooling axisor core and cavity opens is Tooling axis
Considering the ejection from the cavity of the mold after manufactering the interior trim must have the nominal 3 degree draft angle. Hence the tooling axis is crested by considering this factor
The white clour line is the tooling axis of this surface
Class A Surafce :
Class surface are the one which will be visible to the customer
It's the exterior of the parts
It has a optimal asthetic shape and high surface quality
Draft Analysis :
This type of analysis is performed based on colour ranges identifying zones on the analysed element where the deviation from the draft direction at any point.
The Green colour denotes the draft angle is in the standards (3 degree).
The Blue colour denoted its is below (3 degree).
The Red colour denotes the surface is not producable.
For class A :
For Solid Body:
Class B Surface :
Class B is the inner side of the Class a surface which will not be seen by the customer
where it will faced in the side of core
where the ejection will make there contact
It contains the engineering aspects of a model.
Class C Surface :
Surface that joins class-A and class-B surfaces is class-C surface.
Which will determine the thickness.
Class C is often specified for interior surfaces not readily visible.
CONCLUSION:
This reports concludes the creation of HEAT STAKES & LOCATORS by following all Design Consideration for this model.