Week 9 - 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.

MASTER SECTION

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
2. 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.

1. Join command is used to join the surface A class and the surface A, C class
2. Trim commend is used to trim class AC and B. They join themselves.
3. Finally, we got hollow product.
4. In part bench close commend is used to get the solid model
5. We give different colours to appearance and easily analysis different parts.

DOG HOUSE

1. First draw the rectangle with one side open
2. Extrude required hight or given height 30mm.
3. Offset used to close the top side
4. Give thickness to the surface part 2.5mm.
5. Give drafting to outside surface 1.5 degree.
6. Give inside and outside fillets
7. Then follow some dog house standard instruction like downside thickness and hight and some values.
8. Offset the previous surface part 1mm and downside surface offset upside 4mm
9. Trim and form down side part
10. This part split from previous part body
11. Give draft and fillet to the top wall of split portion. This draft is given for side core so we create separate tooling axis parapedicular to the main tooling axis and give draft for this direction.
12. Finally, we have got dog house. Next, we will create the ribs on the dog house middle surface.
13. So, we created middle part separately.

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

DRAFTING ANYLYSIS:

If we want, Again, Same drafting analysis procedure is used to analysis the drafting angle. It is used to determine the drafting angle of part in difrent postion by main tooling axis and side core tooling axis.