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Basic Product Constructions
Product Design Sketching
Undercuts
Undercut is an essential consideration in product design. It refers to the condition when the molding of a part cannot be readily removed upon completion of the formation process
OK
Undercut problem
Undercuts
Most often it is undesirable to have a part with undercuts because it is more costly for manufacturing
Undercuts could be avoided by further dividing the massing of the product in sub-components
One-shot Production
Aurélio Flôres’ stainless steel wire jewelry
Principle Classification(原理分类 ) Mechanical Link(机械连接 ) Adhesion(粘接 ) Fusion(焊接 )
Functional Classification(功能分类 ) Dynamic Links(动连接 ) Static Joint(静连接 )
Slides
Telescope
Screw
Hinge
Barrel
Spring
Tent
Buckle
Static Links
Friction
Screw
Hinges and Rotation
Due attention should be given to rotating parts at hinges because the rotation would mean additional spatial requirement
This principle applies to other operable parts as well
This area should be cleared for the rotation to take placeRotating part
Buttons
Consideration should be given to the spatial requirement of buttons. Sufficient clearance should be given when doing packaging design of a product.