In the design process, you often need to replace one or more components in an assembly or assembly pattern. You may design a placeholder component that you eventually replace with a standard purchased component, or replace one vendor's component with another.
You can select a single component or all components to replace existing assembly components regardless of their location in the directory structure. When you select a component in a pattern element, usually all occurrences of that component in the pattern are replaced. If there are multiple instances of a component in each element of an assembly pattern, not all occurrences of the component in the pattern are replaced. For example:
Component Pattern 1
The new component or all occurrences of the component are placed in the same location as the original component. Assembly constraints are retained, if possible. The origin of the replacement component is coincident with the origin of the replaced component. If the replacement part has a different shape than the original, some constraints might need to be reapplied to correctly position the component.
You can replace one assembly component with another component or replace all occurrences of the component in the current assembly. If possible, constraints are retained, unless the replacement part has a different shape. In that case, some constraints may not survive and must be reapplied.
The new component or multiple occurrences are placed in the same location as the original components. The origin of the replacement component is coincident with the origin of the replaced component. If some constraints were not retained, apply assembly constraints as needed to remove degrees of freedom.