Week 11 - Project - A pillar Design with Master Section

AIM:

To make a full solid model from the provided master section and class A surface.

CLASS A SURFACE:

It is surface which is made by the designer. It is aesthetic surface and usable outside futures are on this surface.

CLASS B SURFACE:

It is bottom side surface of class A surface. It is made by class A surface. It is formed with thickness distance from class A surface.

CLASS C SURFACE:

It joins the both class A and class B surfaces. This surface is equal to the thickness of the component.

TOOLING AXIS:

• Class A surface or part is used to manually analysis which is best for tooling and create the axis perpendicular to the product. It is called tooling axis. Mould is open and closed by this axis.

DOG HOUSE:

It is used mainly for three functions.

• To eliminate the sink marks
• To lift the bosses for hight
• To give outside bosses from B surface

RIBS:

Ribs give strength to the model. It is made by some guidelines like draft, fillets etc.

TOOLING AXIS CREATION:

• First create the class A surface and manually analysis and fix the direction of tooling.
• In this part two hole on the surface. So, we can directly take its perpendicular as the tooling axis because its most suitable for tooling axis. Carefully watch and take this axis with the help of all types of views.
• First created the point on the surface and create new axis system.
• Then this intersect line is used to create the new lines on both wall lines. Then the both lines are used to create a bisecting line in tooling direction or it is zero degree drafting part, so we directly draw line through the line to form tooling axis.
• Change some appearance to this line like thickness, colour, dot lines. Finally, it is called tooling axis. It is published for frequent uses.
• Dog house is created by side core. So, we created separate tooling axis for dog house. Same method is used to create a tooling axis parapedicular to the main axis

DRAFT ANALYSIS

SURFACE B CLASS CREATION:

Following procedures are used to create surface B class.

1. We directly offset the given bumper surface at 3mm distance inside with the help of offset comment fore b surface
2. Some discontinuous surface filled with some comment like blend, fill, Mss etc.
3. If we need any bounty expand with the help of extrapolated comment.
4. Trim unwanted surface
5. Finally, we got surface B class.

SURFACE C CLASS CREATION:

1. Extract tool is used to create the boundary lines separately on side edges of class A surface

Sweep comment is used to create surface C class for separate edges from given master section reference. Finally merge all sweep surface to get class C surface.

Dog house :

• The main purpose of dog house is to avoid sink mark to house various other engineering features .
• Its wall thickness at the intersection of the part should be 40 % or less than the main wall.
• The height should be between 3-6 mm.

CLOSURE BODY AND DOG HOUSE JOIN:

1. In this part there is hole like on the top of the dog house.
2. First, created middle part is joined with dog house.
3. The draw hole on the top wall and extrude the this extrude surface is used to split from the dog house. We finally got full engineering feature.
4. The this dog house model is joined with the created pillar body by union trim operation.

Finally, we have got full model with master section reference. Next we will do draft analysis

Conclusion:

• Created class B surface and class C surface .
• crestred engineering features .
• Perform draft analysis .