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- 저자 : Luoke Hu (검색결과 3 건)
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Luoke Hu,Wei Cai,Lianjie Shu,Kangkang Xu,Hao Zheng,Shun Jia 한국정밀공학회 2021 International Journal of Precision Engineering and Vol.8 No.2
Many studies have approved that optimising the cutting parameters is effective for reducing the energy consumption of machining operations of machine tools. However, this technique to reduce the end face turning energy consumption (EFTEC), where the material removal rate is variable, has not received attention. Besides, the energy consumed for the spindle speed changes was ignored in previous research. Aiming to fill these gaps, an integrated EFTEC model is developed considering the spindle speed changes. In terms of optimisation, the EFTEC model is discretised according to the allowable accuracy of the machine tool. Simulated annealing is adopted to search for the optimal values of cutting parameters that lead to the minimum EFTEC. In the case study, nine parts with changing diameters and cutting depths are machined by a lathe (CK6153i). According to the experiments, simulated annealing has more than 96% probability of obtaining the global optima. The optimum achieves a 14.03% EFTEC reduction for a case. The relationship between the design parameters and the optimal cutting parameters is discussed. A case shows that 2.43% of the machining time increases suffer from the EFTEC optimisation.
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Task-oriented energy benchmark of machining systems for energy-efficient production
Wei Cai,Li Li,Shun Jia,Conghu Liu,Jun Xie,Luoke Hu 한국정밀공학회 2020 International Journal of Precision Engineering and Vol.7 No.1
The energy benchmark has been recognised as an effective analytical methodology and management tool that help to improve the efficiency and performance of energy utilisation. With a wide distribution and large amount of energy consumption at a low efficiency, machining systems have considerable energy-saving potential. This paper proposes a task-oriented energy benchmark in machining systems, and illustrates the concept of the task-oriented energy benchmark and indicators. A method for developing the task-oriented energy benchmark considering the certainty production task and the uncertainty production task is proposed, which lays a solid foundation for studying the energy benchmark, benchmark rating system and energy certification. Furthermore, a case study of the task-oriented energy benchmark not only verifies the reliability but the effectiveness for energy-efficient production.
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Wei Cai,Yuanhui Zhang,Jun Xie,Li Li,Shun Jia,Shaohua Hu,Luoke Hu 한국정밀공학회 2022 International Journal of Precision Engineering and Vol.9 No.2
Energy performance improvement is a basic significant way of addressing both energy security and environment concerns, which can promote energy-saving and emission-reduction. There are various measures of energy performance, with different purposes and applications. However, there are few models or approaches for measuring and quantifying energy saving potential in machining systems. To better perform the energy performance analysis and evaluating energy saving potential in machining, an energy performance evaluation method based on energy benchmark in machining systems is addressed. Energy performance characteristics is analysed, and some energy performance concepts and indicators are proposed. The energy performance evaluation based on energy benchmark is developed for machining systems. Furthermore, a case study involving the establishment of an energy performance evaluation and energy saving potential for gears in a real machining plant was examined, illustrating the practicability of the proposed method.
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