Week 11 - 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 Thic

  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.

  kness of the component to be 2.5 mm.

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 HAVING VALUE BELOW NOMINAL VALUE  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.

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

v

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

Below Fig shown the Close Surface and some Publication.

CREATION OF DOG HOUSE

PROCEDURE TO CREATE THE ENGINEERING FEATURE- DOGHOUSE USING THE MASTER SECTION:-

Using the Master Section we can create a sketch that can be extruded to create the doghouse's walls as shown below:

FINAL BODY WITH ENGINEERING FEATURES

DRAFT ANALYSIS WITH ENGINEERING FEATURES WITH RECPECT TO MAIL TOOLING AXIS

DRAFT ANALYSIS WITH RESPECT TO SIDE TOOL AXIS

DIFFERENT VIEWS

CONCLUSION:

        Hence the A Pillar Design with the master section given as the intersection sketch with the Class A surface is done sucessfully and create the tooling axis and perform the Draft analysis for the final solid part is also done successfully. From the Draft analysis for class A surface some areas in minimum of draft angle  so we need to correct it Class A surface itself by informing to the Class-A surface creating team.