Study of the enwrapping of the front profiles of the active elements of a three-screw compressor

The paper proposes a method for identifying the front profile of worm-type active element, consisting three-screw compressor. purpose this identification is to study frontal enwrapping between profiles driver and driven in order produce possible replacement element. As it well known, two are mutually profiles, which means that problem can be treated as plane problem. was performed by specific reverse engineering methods, parts being scanned on an ATHOS 500 scanning system. Subsequently, analytical shape screw identified and, applying “virtual pole” method, corresponding deduced. obtained compared with real profile, 3D scanning. results demonstrated not only good match theoretical but also simplicity robustness applied enwrapping, namely method.