Error Budgets and Error Budgeting Techniques

An error budget is a method employed in ultra precision machine design that identifies the accuracies of individual machine elements and gives a useful value as to the over all machine accuracy. This technique can identify potential weak spots in a machine concept and be used to focus design effort into ensuring that every element of a machine tool is fully optimised.

6 degrees of freedom for a machine tool axis

Each machine element will have a potential error motion or influence in 6 degrees of freedom dependent on  the constraints in place.

Error budgets are used with a good deal of experience and where necessary previous results and test beds to prove a principle or concept.

Read more on error budgeting techniques here.