Week 8 - Challenge 4 - Bumper

Step 1-Our first task is check continuity of class A surface using boundary or join command.As there is no gap between components so it clear 1st step.

STEP 2 - TOOLING AXIS- After visualizing class A surface we can concude this

• X-direction will be our tooling direction.

Creating tooling axis

• Since Our bumper shape is complicated, so we cannot find tooling axis using bisector method, insteaded of that i have used hit and trial method
• When our bumper will be mirrir(complete bumper), so it best to take tooling axis in middle of complete bumper.
• So i we can choose tooling axis that face which are flat face or rectangular face
• I could have choosen rectangular face but when i lookwd at normal view from rectangular some corner fillets were not visible , so i choose other flat face(shown in below image)
• Extract the flat face and make a point a centre.
• Draw a line a line at point and take direction as x.
• This line is our tooling axis.
• Publish it

For draft analysis for CLASS A -Surface

1. For draft analysis go to
2. Insert > Analysis > Features draft analysis
3. Make sure it should be in material mode
4. Now go to direction, and click 2nd option.
5. Pick the compass and align it with the tooling Axis and click on the lock .
6. Now click on the class A surface,we will see a green colour surface.
7. Now give 2.9° draft.

CREATING B-SURFACE

• Offset the class a 3mm.(below image)

• we noticed there are some fillets which are missing

• We have to fill them
• We used multiple extract and selected the fillets which are incomplete and and also tick on Complementary mode.
• Now used disassemble operation.
• We will have 4 separate faces and i have given name as.

Image of main face

IMage of 1St FACE and Rectanglar face

Image of Small middle part

• So now will join these face with each other using extrapolate and trim operation
• Image of Main face trim with 1st face

Image of 1st+miain trim face with rectangular face

Image of 1st+miain + rectangular face trim with centre small part

• Now apply the fillets and our B SURFACE is ready

CREATING C-Surface

• Class C surface is use to connect A and B surface
• Since our shape is compilcated so we can created class C surface using single boundary.
• I have use mostly swept using reference surface
• The C-surface which is parallel to tooling axis ,i have used swept using draft direction.
• 
• 

A+B Surface

A+B+C

Draft analysis report for the final plastic component

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