The application of finite-element method when investigating the stress-strain state of a workpiece exposed to the gauge burnishing under the conditions of nonzero friction is considered. The mathematical model of the workpiece surface-plastic deformation during burnishing, algorithm and computational results of stresses and deformations are given.

Abstract. This paper deals with assumption that simulation is the only reliable method for manufacturing and assembly systems profiling. Simulation is essential software tool that improve design and planning of complex automated manufacturing and assembly systems. Systems with high level of complexity need to be tested even before they are constructed in real manufacturing plant.

The paper presents an example of automation of the existing welding workstation exhaust system that can be similarly implemented also in other closed welding workplaces inside the buildings. The automation of previously non-automated process of exhausting the harmful chemicals and aerosols from the welding workstation create better conditions at workplace from point of view health care and safety. It also can save costs spent on the non-regulated exhaust system without decreasing the exhaust effectiveness.

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The research within the development of digital factory concept concerns also the assembly process as an important part of the production. This paper presents an assembly operations sequence model as a part of design and planning method for the assembly process. This model enables to obtain a precise graph presentation as a tool for computer support.