Increased output in micro production by tolerance field widening and synchronisation

¹ University of Bremen, Bibliothekstr. 1, 28359 Bremen, Germany
² Bremen Institute for Mechanical Engineering, Badgasteiner Str. 1, 28359 Bremen, Germany
³ MAPEX Center for Materials and Processing, Am Fallturm 1, 28359 Bremen, Germany

^* Corresponding author : onken@bime.de

Abstract

The manufacturing of linked micro parts simplifies the handling and facilitates a consideration of trends due to the maintaining of the manufacturing order. These known changes of geometrical characteristics of parts are the basis for softening tolerances. The basic idea of the tolerance field widening is familiar with selective assembly. Instead of single parts, trend-based sections are used for increasing the number of assemblies under consideration of the clearance. The outcome of the assembly of the identified trend-based sections is influenced by the occurring trends and the changes of trends. Therefore, based on simulated data the effects of occurring trends are investigated. For sorting and matching the identified trend-based sections in high quantities, a case specific pre-assembly in the synchronisation point is required. Possible synchronisation scenarios as well as a synchronisation station for the synchronisation of two types of linked parts are presented. The results for the influence of trends show that the tolerance field widening increases the outcome especially for intersecting and opposing trends.