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An implementation of robotization for the chosen hot die forging process

Hawryluk Marek, Rychlik Marcin

Archives of Civil and Mechanical Engineering

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2022

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Vol. 22, no. 3

art. no. e119

EN

The article discusses the possibilities of introducing selected aspects and problems in the robotization of the workstation in the hot die forging process, the production of the yoke forging carried out on a crank press in a manual system. The implementation of the developed solution was performed to increase the production efficiency without lowering the quality and mechanical parameters of the produced forgings and with preserved durability of the forging instrumentation. The conducted investigations included numerous aspects of the whole process line, with a special consideration of the adjustment of the currently realized technology to the working conditions of the robots in reference to the ejector system ensuring proper collection and relocation of the forgings by the manipulator grippers in the consecutive operations. The conduct also included the selection and localization of the robots and the grippers solutions, as well as the changes in the tool construction aiming at adjusting it to the gripper pins as well as collecting the hot charge material from the heater. Implementing robotization into one of the most difficult production processes aimed at replacing the role of a human by transferring the competences from the operator of the die forging process onto a supervising person, where all the activities are realized automatically, thus eliminating the effect of the human factor on the quality of the manufactured product. Additionally, the robotization of the forging process brought a lot of tangible benefits, such as stability and repeatability of the process (reduction of reject rate), as well as increased efficiency and quality of the forgings.

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Compressive sensing aided seismic geometry design for offshore acquisition

Huang Xiaogang, Zhang Jinmiao, Du Xiangdong, Zhu Zhenyu, Li Weixin, Zhang Yiming, Ding Jicai, Liu Zhipeng, Zhang Jianfeng

Acta Geophysica

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2022

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Vol. 70, no 2

547--562

EN

Seismic acquisition guided by the compressive sensing theory can significantly improve seismic data acquisition efficiency and reduce the cost. After reviewing the basic principles of compressive sensing, we propose an optimized random sampling method that can control the maximum sampling interval and improve the design flexibility. We analyze several factors that can introduce reconstruction errors from compressive sensed data and learn that besides sampling method, reconstruction errors increase with decimation degree and the complexity of structures and also depend on the reconstruction workflow. In addition, we provide a basic workflow of the geometry design of compressive sensing acquisition. We analyze the feasibility of the three types of receiving equipment that are widely used in marine environment and discuss the potential cost reduction and efficiency gain. Our field example demonstrates the detailed working process and the feasibility of the combination of random sailing line intervals and random shot intervals and verifies the effect of cost saving and efficiency increasing.

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Zwiększenie efektywności procesu transportowego poprzez eliminację słabych punktów procesu zarządzania w przedsiębiorstwie transportowym

Bujak A., Topolska K.

Logistyka

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2014

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nr 6

PL

Transport jest nieodłącznym elementem systemów logistycznych. Jego organizacja i sprawne funkcjonowanie wpływają na płynność łańcuchów logistycznych. Zależność między transportem a logistyką sprawia, że wybrany temat jest jak najbar-dziej aktualny. Opracowane usprawnienia będą mogły znaleźć zastosowanie w rzeczywistości w przedsiębiorstwach transportowych. Użycie diagramu Ishikawy, jak również diagramu Pareto-Lorenza pozwoliło na zlokalizowanie słabych punktów procesu transportowego i procesu obsługi klienta. Dzięki temu opracowano metody zmierzające do poprawy funkcjonowania organizacji oraz zachodzących procesów. Trafność zastosowanych usprawnień, będziemy można ocenić dopiero w momencie przeprowadzenia kolejnych badań. Jeśli w kolejnej analizie wskaźnik CSI, będzie miał większą wartość od obecnego wtedy zostanie uzyskana pewność co do słuszności stosowanych metod.

EN

Transportation is an integral part of logistics systems. His organization and smooth functioning affect the liquidity of logistics chains. The relationship between transport and logistics makes the selected topic is the most current. Developed improvements can be applied in reality transport companies. Using the Ishikawa diagram, as well as the Pareto diagram - Lorenz allowed to locate weak points the transport process and the customer service process. Thanks methods have been developed to improve the functioning of the organization and the processes. Relevance applied improvements, we can only be assessed when conducting further research. If a subsequent analysis of the rate of CSI, will have a greater value than the current time will be received assurance as to the validity of the methods used.