Week 10 - Challenge 2- Attachment Feature Creation (Dog House)
1.)TOOLING AXIS CREATION
Check the best possible tooling direction by manually adjusting the compass.
By analyzing it is found that the y axis as tooling direction would clear most of the faces without any difficulties.
Now extract any surface and create a mid-point on it.
Then create a dummy axis creating a line on the point and direction along the y-axis.
Perform draft analysis to find whether the given axis clears the draft analysis. If not create a new tooling axis.
2.)CLASS B SURFACE CREATION
Class-B surface means the thickness of a part it is not visible and is inside part. In other words, the Class-B surface is a surface below a certain thickness from the class-A surface. This is the surface that contains engineering aspects of a model.
Create an offset surface of CLASS-A about 2.5mm inward direction.
Check for discontinuity and rework on the offset surface using extract, multi-extract, multi sections surfaces.
join the surfaces and ensure the final CLASS-B surface created has no gaps.
3.)CLASS C SURFACE CREATION
The surface that joins class-A and class-B surfaces is class-C surface. Class C is often specified for interior surfaces not readily visible, surfaces that will be covered by another part when assembled
Create the sweep at concern to the surface and tooling axis multiplextracting the CLASS-A boundary
Join the sweep surfaces by using commands like extrapolate, multi-sectiontion surface.
Finally join all the sweep surfaces and ensure the continuity of the CLASS-C surface.
For creating the Finals door trim surface, join the CLASS-A and CLASS-C surfaces together.
Then Extrapolate the B surface little bit outward direction to make sure that there would not be any gap when trimming with the joined surface.
Then trim the extrapolated CLASS-B surface with the Join surface (CLASS-A and CLASS-C)
4.)CLOSE BODY CREATION
Make a solid part body using the close surface command in the part design workbench.
5.)DRAFT ANALYSIS
The Draft Analysis is a command that enables you to detect if the part you drafted will be easily removed. This type of analysis is performed based on colour ranges identifying zones on the analysed element where the deviation from the draft direction at any point, corresponds to specified values.
Draft analysis is done after determining the tooling axis, draft analysis is used to check whether the minimum draft (3 degrees) is maintained or not.
Procedure for performing the draft analysis are as follows
Change the view mode of the component to be in customized parameter mode and then select the shading mode as materials.
Then open the featured draft analysis tool from the insert menu.
Then click on the use the compass to define the current drafting direction and then drag and align the compass on the Tooling axis.
Then lock the draft direction and perform draft analysis by clicking on the component.
Procedure for creating the DOG HOUSE
The First step is to create a side core axis.
Create the dog house by creating a positioned sketch on the z-x plane. Using extrude or sweep method create dog hose outer walls.
Now close the top wall using the multi-section surface command.
Using thicken command in the part workbench, create a solid part of the dog house.
Give proper draft angles and fillets by considering the design rules.
Using Boolean operation, union trim the dog house body part with the door trim component.
Repeat same procedure for secound dog house creation.
DRAFT ANALYSIS OF CLASS A SURFACE
In class A surface draft analysis i have found some walls required draft correctness.
Draft analysis of DOG HOUSE using the Side Core Axis
Draft analysis of final Door trim component
SNAPSHOTS OF FINAL DOOR TRIM WITH DOG HOUSE IN DIFFERENT POSITIONS
