Week 9 - Project - A pillar Design with Master Section

AIM : To create the A pillar Design with Master Section and using through the given Class-A surface. Also create the engineeing features as Dog house.

Objective

• To create a tooling direction.
• To perform draft analysis for given A-Surface and prepare the final close body.
• To design the A pillar plastic component by creating the B-Surface and C-Surface using the given Class-A surface.
• Take the Thickness of the component to be 2.5 mm.

Introduction :

The input of the product designer is in the form of the A-class surface and Master section. The job of the product designer is to create the B and C surfaces keeping all the aspects for the mold.

Class A Surface is

1. Visible surface and aesthetic look.
2. Surface with textures.
3. Surfaces provided by customer(OEM).
4. Don't have any features like(rib, snap, bosses, etc) on class A surface.
5. Class A surface is made from scanned data with different software like alias etc.
6. Surfaces which are having CURVATURE CONTINUITY IS CALLED class-A.

Class B surface is

1. Invisible Surfaces.
2. Surface mostly don't have textures.
3. Surface needs to be created according to the class-A surface.
4. Having all features(Rib,boss,snap etc) in B-side surface only.
5. Surfaces which is having TANGENT CONTINUITY IS CALLED class-B.

Class A Surface : Check the connectivity of the Class A Surface Ensure that there is no gap between the component, using join command. We can visually check it or by clicking boundary command. It has a boundaries outer. Therefore first check completed.

Below fig 1 shown the given A-class surface.

Fig 1.

The given A-Surface having No gap as above fig shown. Hence boundary generated at the edges.

Tooling Direction for Plastic Part : Tooling direction is main consideration for plastic part and mold parts because it defines movement of mold part and possibility of plastic part to come-out from 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 define the direction of mold pulls apart.
• Tooling direction is known as primary direction.
• One more new metohd to find the tooling direction is by using the CG(Centre of gravity) part and crete line centre point and one flat surface.
• But in A pillar design we have an Master Section based on that we considered the tooling direction.

Preparation of Tooling Direction.

Tooling Direction is created with the help of master section as shown in below fig 1.2.

Fig 1.2.

Below fig 1.3 shown the A-Surface Draft analysis.

Fig 1.3.

In some area having an Negtive draft need to check with A-Surface team.

Creation of B-Surface: Is created with help of A-Surface by using the Off-set,Trim command,Multi Section,Sweep and Fill command. Below fig 1.4 shown B-Surface.

First offset the class surface with 2.5mm as per requried thickness. In offset surface having on some patches are removed. For this patches we need create the close surface by using commands.

Fig 1.4 Final B-Surface.

Creation of C-Surface: Is created with help of A-Surface by using the Sweep and Boundary command. Below fig 1.5 shown C-Surface.

Fig 1.5 Final C surface.

Below fig 1.6 shown the joing of A-B-C-Surface with Draft analysis checking.

Fig 1.6.

Below Fig 1.7 shown the Close Surface and some Publication.

Fig 1.7

B Side Features creation using the Master Section.

1.8 Dog House:

Fig 1.8 Final creation of Dog House.

Below Fig 1.9 shown the draft analysis of Dog House.

Fig 1.9.

Final A Pillar with Dog House.

Fig 1.10.

Tree Structure is shown in below fig 1.11.

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Fig 1.11.

Conclusion : The A-Pillar is created consedering Master Section and Design Methodology and also created the engineering features.