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From Germany's Industry 4.0 mission to Made in China 2025 and Make in India mission to British Factory of the Future in 2050, digital manufacturing (DM) is promoting in the world's major industrial countries as a technology foundation of the future manufacturing. At the same time, in the different segments of the DM realm, different forms of information technologies (IT) are flourishing such as the following: computer-aided manufacturing, robotics control in manufacturing, and process simulation. This paper is aimed to review the latest initiatives ofDMin the leading universities and major industrial countries. Along with, a critical literature review of various initiatives in the area of DM-assisted hybrid additive manufacturing (DM-HAM) has also been carried out. DM-HAM seems to be very promising for next generation multi-operational manufacturing as it is time saving and economical. The highlights of this review will provide a guide for the upcoming research activities in the area of DM-HAM. [ABSTRACT FROM AUTHOR]

Abstract: This paper introduces a derivation and simulation technique of instantaneous stiffness for 6–6 Stewart platforms (hexapods) with the interest in increasing machining accuracy of the new type hexapod machines. It clearly expresses that high non-linearity of motions and driving forces of the parallel mechanisms results in the asymmetric stiffness matrix, and the change in geometry and the loading are the significant factors to the asymmetry. Also, based on the theoretical calculation the simulations for the hexapod machining cycles numerically and illustratively present the instantaneous stiffnesses and deflections of the end-effector (tool tip). Therefore, this work can provide a theoretical principle and an application tool for the anticipation and the evaluation for hexapod machining performance, design optimisation and machining accuracy control, etc. [Copyright &y& Elsevier]

Our two major concerns, which should be taken into consideration as soon as we start the selecting the machining parameters, are the minimization of the machining time and the maintaining of the high-speed machining machine in good state. The manufacturing strategy is one of the parameters which practically influences the time of the different geometrical forms manufacturing, as well as the machine itself. In this article, we propose an optimization methodology of the machining strategy for pockets of complex forms. For doing this, we have developed analytic models expressing the feed rate of the cutting tools trajectory. Then, we have elaborated an optimization method based on the analysis of the different critical parameters so as to distinguish the most suitable strategies to calculate the cutting time and define the machine dynamics. To validate our results, we have compared them to the experimental ones and also to those found in literature. [ABSTRACT FROM AUTHOR]

This work is motivated by a practical need for operation scheduling for an automobile manufacturing industry involved with machining of different types of vibration dampers. This work aims to minimize the makespan time for relatively different types of vibration dampers with nonuniform flow pattern through a two-parallel inseparable hybrid flow shop. A mathematical model has been developed for simulation of the hybrid flow line performance. The simulation provides data relating to completion time, queue status, and machine utilization of various schedules. After analysis and evaluation of different possible schedules, simultaneous processing of two types of dampers is suggested. The model was evaluated for nonuniform flow pattern for any number of types of dampers for different sets, and a parallel solution based on completion time is suggested. [ABSTRACT FROM AUTHOR]