Form Fit Function Examples

Form fit and function are also a good litmus test against which to check if a process step is value added or not.

Form fit function examples. The f3 framework increases design change flexibility by allowing changes to the part with minimal documentation and design cost as long as the fit form and function of the product are maintained. Hello to all. Form fit or function form fit or function nathan gardner mechanical op 25 may 17 14 23. Fit is the ability of an item to physically interface or interconnect with or become an integral part of another assembly.

Here is a simple framework for thinking about the bom that i call form fit and function. If your warehouse is locating non interchangeable parts by revision then the revision has become a de facto part number suffix. Form fit and function models. Right off the top of my head one example that i can think of is red blood cells.

Tightening a bolt that holds parts together or applying paint are both examples of steps that change form fit or function. If a step changes the form fit or function of a product it is probably value added. There are plenty of examples that illustrate how form fits function. Each defines a specific aspect of the part to help engineers match parts to needs.

The definitions above describe what three fff represent on their own. By function i mean what the part is actually doing what its purpose in life is. In other words they are thin near the center and thicker towards the rims. Form fit function rules specify how far new versions of a part can deviate from the original before new part numbers are created.

This is a great example of testing all three f s in rapid prototyping form how it feels fit how everything comes together and function how it actually works when you put it on the bike blog elizabeth griffin isabelle january 15 2014 3d printed 3d printing bicycle generator fit form function new product product. By form i mean the specific piece of hardware or part that we re dealing with. Form involves the physical properties of the product like shape size mass weight dimensions color and other visual parameters etc. Typically if the change to a part is significant enough that the new part cannot be used in place of the previous version for example if the size of a screw changes then a new part number must be created.

Function is the action that an item is designed to perform. Customer order new bar and complains it doesn t fit. But the object of our discussion is the form fit and function model which includes in its definition a very important subject for manufacturers. Form fit and function f3 is the identification and description of characteristics of a part or assembly.

This is the reason for. Red blood cells can be described as biconcave discs. Of course the whole point of using the form fit function rule is to decide when a part iteration requires a new number and inventory location.