Week 9 - Attachment Feature Creation - Challenge 2

ATTACHMENTS OF SCREW BOSS AND DOG HOUSE FOR COIN HOLDER:

1. Check the continuty of the class A surface and make sure not to have gaps.For this we use join/boundary options.

2. Create a Tooling axis with the dummy axis system

                                   or

3.  Create the lines from the reference of A surface by taking the intersection then bisect the both lines and create a                 bisecting line and named it  as TOOLING DIRECTION 

4. Then create a B surface 

5. Extract the surfaces from the WALLS,untrim them,make sure to give extrapolate

6. Do the same with the other walls

7. Then use the trim option  and trim the unwanted surfaces,now we have to offset it,then extract the outer surface of            class A then untrim it and extrapolate it. Finally trim the outer surface  so, that we get a required outer surface and            named as surface B.

8. Now create the surface C.it is the combination of both surface A & B.

9. Highlet the outer boundary of surface A then with the help of sweep command we can get the class C surface

10. Finally make this entair product into single product.

11. Next we have to publish the TOOLING AXIS and surface A,B,C so, that we can find it easily.

12. Now do the draft analysis for class A & c .For that we go to the INSERT>ANALYSIS>FEATURE DRAFT ANALYSIS.

13. In it we have to add material mode.once the Draft analysis mode is on then click on the direction option and compass        in it.

14. Now compass will display then hold on the red spot on it and drag it to the surface of the class A and make sure that            the tooling axis and compass axis should Align each other. Then click on position lock > ok.

15. Finally the Red spot will appers on the class A surface click on it then green colour will appers and measure the angles        with the Analysis under running AXIS  and do the same with the class c surface (SOLID BODY).    

SCREW BOSS & DOG HOUSE:

1.To create a screw boss taking the surface as a reference and draw a profile and pad it to some extent.

2. By taking the profile center point as reference for the creation of Ribs(4 way) and give the thickness 7 hight.

3.Take the same center point as mid point for the creation of DOG HOUSE ( 3 sides should be closed and one side should         be opened )

4. Sweep the profile along the tooling axis direction with 1.5deg of draft angle to a minimum hight.Then run the DRAFT ANALYSIS for the the dog house along the both tooling directions.

5. Now move the screw boss at the top of the dog house.

6. So, that we can avoid the sink marks,reduces the bluck amount of material at one place, can provide certain height for the fitment etc.. if we follow the plastic design rules.  

NOTE 1 : Here we are not able to clear the draft analysis for all the sides because the class A surface had some errors so                   draft analysis wont clear in all directions. 

NOTE 2 : 1. The lines which are 45 deg angle can be ignore during the analysing of tooling axis

               2. GREEN and  RED are forbidden colours in analysis.