TOOLING AXIS, DRAFT ANALYSIS & PLASTIC COMPONENT CREATION OF COIN HOLDER

TOOLING AXIS, DRAFT ANALYSIS & PLASTIC COMPONENT CREATION OF COIN HOLDER

OBJECTIVE: The main aim of this challenge is to create the Coin Holder Plastic component through the given Class-A surface. To begin with, the tooling axis for the given Class-A Surface and to create B-Surface, C-Surface from Class-A surface and perform draft analysis for both Class-A surface and the plastic component created.

Taking the Thickness of the component to be 2.5 mm

Tooling axis: The direction in which the mold or core and cavity opens is the tooling axis.

STEP-01

Connectivity of Class-A surface:

Checking the connectivity of the surface, this can be done by creating boundaries or by simply using the join option such that any openings can be easily visualized.

STEP-02

Analyse visually for the best possible tooling axis.

Checking possibilities (clearances) in all the directions of axis and find what are the problem creation parts of the component or model.

The clearance checking along all the axis direction will be done by creating an intersection along an axis on a plane with the model and constructing two lines contact with the walls, the line bisecting the two lines and passing through the point will be the tooling axis.

But here in this model as the walls are not satisfying the draft (Minimum 3 degrees) and are at 90 degrees which can be observed by creating intersection, so here we can take the tooling axis normal to the base surface.

Creating intersection:

The intersection will be created along a plane to the surface, such that a single line will be formed along the plane in the shape of surface where we can observe the draft of the walls.

Tooling Axis creation:

Using the point created on base surface a line normal to surface will be created and treated as a tooling axis.

Publication:

Publication is used to make easily accessible of the published components.

Draft Analysis:

Draft analysis is done after determining the tooling axis, draft analysis is used to check whether the minimum draft (3 degrees) is maintained or not.

Compass is used to define the draft direction.

If the minimum draft 3 degree is provided the whole component changes in to green colour and the blue colour will mention as the surface has no draft whereas the red colour will indicate it has negative draft.

Class-B surface:

Class-B surface is created by extracting each walls and un-trimming and extrapolating the walls to obtain the shape by trimming the excess surfaces and offsetting it to certain distance based on the thickness of the model and giving fillets wherever it is necessary. The offset surface will be the B-Surface.

C-Surface:

The surface created using the sweep option by sweeping the boundaries of A-surface along the tooling axis to connect from A to B-surface is called C-Surface.

Using the B and C Surfaces a closed surface will be formed by trimming the excess surfaces.

The final trim surface will be converted in to a solid model using Closed surface option.

Draft Analysis of plastic component:

The views of the model: