OpTol: Spatial Tolerance Analysis Application

Abstract

The analysis of manufacturing and assembly dimension chains is indispensable for performing up-to-date part manufacturing and assembly. It will both reduce the manufacturing and assembly costs and will result in a wellgrounded body of knowledge and improved level of design. The paper deals with mathematical models for calculating spatial dimension chains and introduces the OpTol Tolerance Calculator software. This application is capable of calculating planar (2D) and spatial (3D) dimensional chains by using the classical worst-case and statistical methods, as well as applying the modern six-sigma tolerancing method. OpTol system also contains a CAD module in order to support engineers in analysing their existing assemblies.