Tolerance Stack-up Analysis

Tolerances become important as soon as you design an assembly of parts. Of course, each dimension must be given a tolerance. But in an assembly, tolerances become important because all the parts must fit together. In this article, I will implicitly assume that we are...

Flexure hinges: theory and practice

The flexure hinge is a proven design element in precision engineering systems. It is created by drilling or spark erosion of two adjacent holes. The positive characteristics of flexure hinges, free of backlash and friction, are partially offset by the limited angular...

FAQ about HertzWin

The program HertzWin developed by Vink System Analysis & Design is used by many people. Sometimes these users have questions about the accuracy and use of the HertzWin results. Some of these questions are discussed here. Does the program contain calculation errors...