迹字石油化工大學⊙ B Machines are Tool-Work Systems The goal is to figure out what motions should occur to make the tool do what it is supposed to do on the work One must also think of the motions one does not want to occur(error motions)and what their effect is on system performance To fill in the mechanism between the tool and the work. one must understand fundamental principles, machine elements and manufacturing An Error Budget can be used to keep track of errors in a machine elements and manufacturing methods and their cumulative effect on the machine Quality, robustness, reliability, cost.depend on minimizing complexity and trying to maximize accuracy for minimum costB.Machines are Tool-Work Systems • The goal is to figure out what motions should occur to make the tool do what it is supposed to do on the work – One must also think of the motions one does not want to occur (error motions) and what their effect is on system performance • To fill in the mechanism between the tool and the work, one must understand fundamental principles, machine elements, and manufacturing – An Error Budget can be used to keep track of errors in a machine elements and manufacturing methods and their cumulative effect on the machine – Quality, robustness, reliability, cost….depend on minimizing complexity and trying to maximize accuracy for minimum cost