It needs to be understood that a final product emerges after the due assembly of various parts or sub-assemblies. It is important to give due consideration in design that everything has a place and everything is in its place. Assembly design is a subject by itself.
Organization Chart
An assembly is like an organizational chart. A few parts were puts together to make a sub-assembly. Few sub-assemblies make a final assembly. At the commencement of design, it would be extremely useful to visualize a structure diagram of this kind for two reasons. Firstly, the distribution of work and therefore the evaluation of the work becomes easy at all working levels. Secondly, it becomes easier to evaluate the mating compatibilities and initiate corrections, if necessary. The ultimate idea is a zero-defect product.
This kind of organization chart is universally adapted everywhere from project management to product management. Only the name of the chart may change but the essence is the same., In the present context, the chart is as shown below.
Product Structure diagram
Accessories mean joining elements such as rivets, weld, fasteners, hinges, etc