Monday, 23 January 2012


This chapter introduces assembly modeling. Every day, we see many examples of components that are assembled together into one model such as bicycles, cars, and computers. All of these products were created by designing and manufacturing individual parts and then fitting them together. The designers who create them have to carefully plan each part so that they all fit together perfectly in order to perform a function.


NX assembly is a part file that contains the individual parts. They are added to the part file in such a way that the parts are virtual in the assembly and linked to the original part. This eliminates the need for creating separate memory space for the individual parts in the computer. All the parts are selectable and can be used in the design process for information and mating to insure a perfect fit as intended by the designers. The following figure is a schematic, which shows how components are added to make an assembly.

An assembly is a collection of pointers to piece parts and/or subassemblies. An assembly is a part file, which contains component objects.
Component Object
A component object is the entity that contains and links the pointer from the assembly back to the master component part.
Component Part
A component part is a part file pointed to by a component object within an assembly. The actual geometry is stored in the component part and is referenced, not copied by the assembly

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