Week 8 - Challenge 6 - Core & Cavity Design

Bisecting method

• Take a good look at the Class A surface and find the tooling direction. If there is a hole in the class A surface start from that. consider a dummy tooling axis perpendicular to that hole. 
• if the is no hole then rotate the class A surface in different views so that you can find a good view of all surfaces in the particular view. 
• after you identified the tooling direction create a dummy tooling axis with the help of surface extraction or point. the line must be in the direction of the tooling.
• create an intersection of Class a surface they find the lines that may create problems during manufacturing.
• draw the lines intersecting with these lines 
• then draw a line that bisects these lines 
• and perform this process in both X-Y directions. so at the end of this, you got 2 lines 
• final step is to create a bisecting line between them

 Draft analysis- Draft analysis is a common tool used in CAD (computer-aided design) software to determine the angles of sloped surfaces in a 3D model. The purpose of the draft analysis is to identify surfaces that do not have a uniform angle of inclination or draft angle, which can cause manufacturing and production issues in processes like injection molding, casting, or stamping.

steps 

• open the CAD you want to do draft analysis on 
• put materials option active inside customize view 
• Then navigate the draft analysis (insert - analysis - draft analysis)
• Drag the compass and place it over the tooling axis
• select the compass option in the draft analysis and place it over the tooling axis 
• select the part anywhere 
• the appearance of that part will change  
• it shows the colors for the draft
• green -ok (means the value you set for the draft is ok in the tooling. part can be manufacturable) Ex 3 deg
• Red - less than the given draft ( less than 3deg, greater than 0deg)
• Blue - not able to draft. the draft is negative (less than zero)

CORE & CAVITY

core creation- using A+C surface and trimming with B and then creating a rectangle surface and trimming also with it, later than filling the opening with fill command.

cavity creation- repeat the process with the B- side surface.     *extruded rectangle with tooling axis direction*

intersection 

core cavity

parting line & parting surface 

tree for core & cavity