The rotation precision of rotors determines the efficiency and quality overall aero-engine, as well its long-term reliable operation ability. As terminal link aero-engine manufacturing, assembly is last guarantee control. Rotor relates to accurate expression connection form design optimization scheme. existing variation model cannot adequately handle partial parallel chain problem, ignoring bay...

Purpose This paper aims to present a detailed mechanical design of seven-degrees-of-freedom mobile parallel robot for the tungsten inert gas (TIG) welding and machining processes in fusion reactor. Detailed is presented both kinematic dynamic behaviors are studied. Design/methodology/approach First, model was created computer-aided (CAD) software, then simulation optimization were completed mee...

This article presents a novel alternative subgraphs assembly line balancing problem with resource selection and parallel stations. The model considers both the choice between different process alternatives of production resources for various tasks. It also allows parallelization stations in balanced line, thereby improving flexibility algorithm. objective optimization is to minimize total cost ...

Educational assessments often require uniform test forms, for which each form has equivalent measurement accuracy but with a different set of items. For assembly, an important issue is the increase number assembled tests. Although many automatic assembly methods exist, maximum clique algorithm (MCA)-based method known to assemble greatest tests highest based on item response theory. In that met...

Defect-free atom arrays are a precursor for quantum information processing and simulation with neutral atoms. Yet, large-scale defect-free can be challenging to realize, due the losses encountered when rearranging stochastically loaded atoms achieve desired target array. Here, we demonstrate parallel rearrangement algorithm that uses multiple mobile tweezers independently sort compress in way n...

Most of commercial CAD assembly modules are based on a geometric entities constraining. DOF between surfaces (or faces), axis alignments and point-to-point constraining are targeted to a final product digital mockup. The assembly components are not specifically time sequenced and ordered and the assembly simulation is targeted to improve and optimize the component interaction. The final assembl...