Mechanical Design of a New 200 N Force Standard Machine

This paper describes design, and development of the new 200 N force standard machine. The machine contains two compressive force generation systems. The first is a deadweight system that can generate forces in the range 5-100 N. The second is a substitute loading mechanical system acts as a comparator to generate forces up to 100 N. The two systems are combined to generate forces above 100 N and up to 200 N. The deadweight system consists of a weight stack, and a loading frame. The substitute loading system uses a linear loading screw to generate the substitute force and uses a reference load cell to measure the force's value. A height adjustment mechanism was added to the machine to accommodate different sizes of force transducers. The design of all machine parts aims to maximize its stiffness, and reduce error sources.