Week 4 Challenge

TOOLING DIRECTION:

Tooling direction is the main consideration for plastic parts and mold parts because it defines the movement of mold parts and the possibility of the plastic part coming out from the mold part (Core and Cavity).

• In Molding, machine arrangement is given to open the mold along a direction which is known as Tooling Direction.
• In other words. The mold is built from two separate halves (Core and Cavity) and tooling direction basically defines the direction of mold pulls apart.
• The tooling direction is known as the primary direction.

2.Create tooling direction for Class A with 10 deg draft ( draft in command should be 10 deg) and show the draft analysis.

First, have to create a point and axis system in the given Class A surface of the lens. Then create a dummy line with respect to a point and x direction and analyze the draft direction.

If the draft analysis is not satisfied, then create another line from the dummy tooling axis with an angle of 10 degrees.

Performed the draft analysis with the angle of 10 degree and if perfect and make the tooling direction for the lens component.

The Parting line:

A parting line, in the industrial casting of molds, is the borderline in which draft angles change direction. One can check the parting line in the mold or product which divides the two half, i.e; the core and the cavity of a molded part. It is sometimes a starting point for the mold parting surface.

Creation of B surface

Offset the given class A surface with 4 mm.

Create C surface:

create sweep from the edge of Class A surface with respect to surface and 3-degree angle.

The final component of the Lens

Create Parting Line

In addition, in the injection molding process of two-color mold, the determination of the parting line depends on the design and appearance requirements of the product, and also considers whether the processing is feasible and the position of mold layout follow-up glue. It can be divided into the following three categories:

1. If the straight line intersects the object's surface at a point, the point is the point on the parting line.

2. If the straight line intersects with the object surface in a straight line segment, any point of this straight line segment can be used as a point on the parting line. To determine which point is used as a point on the parting line, it is generally based on the principle of the shortest connecting line with adjacent points. It can also be determined interactively.

3. The line intersects with the object at multiple points and segments, indicating that the intersection of the global approach cone and the mold opening direction is 0, so the core pulling is designed in this area, and the mold parting line shall be determined according to the shape and size of the core pulling.

Draft Analysis of Lens component: