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A Flow-oriented Production Cell in Conditions of Low Technological-Organizational Similarity

Pawlak Natalia, Hadas Lukasz, Fertsch Marek

Management and Production Engineering Review

2022

Vol. 13, No. 4

126--136

This paper presents the concept and methodology for the designing of a “tree-shaped” production line. The concept is a result of the search for production unit organization that meets the Lean Production assumptions, i.e. focusing on lead time (throughput time) shortening with simultaneous ability of use in conditions of varied product range. The varied product range characterized by lower technological-organizational similarity when compared to “Ushaped” units typical for Lean Production. The paper presents an algorithm for the designing of a “tree-shaped” production line and examples of its application. The designed unit underwent evaluation according to the criteria preferred by Lean Manufacturing experts. The designed production unit achieved results confirming the effectiveness of the proposed concept for the analysed sets of input data on the product range and production capacities.

Organizacja przepływu ciągłego w procesie produkcyjnym z uwzględnieniem zmienności zapotrzebowania na wyroby

Żywicki K., Rewers P.

Zarządzanie Przedsiębiorstwem

2015

Vol. 18, nr 1

39--47

The article presents the project organization in the continuous flow water meter corps assembly process. On the basis of observations in the company analyzes were performed: the production process in the seating assembly, the scope of work of each operator, spatial development workplaces and how to supplying the materials. When developing new rules for the organization of the production flow the characteristics of the demand for products, which is one of the factors affecting the distribution of work between the operators, was taken into account. It shows the benefits of the continuous flow by eliminating waste, changing the method of division of labor carried out by the operators, and the spatial development of the seating. The result is to reduced the transit time of the material in process, reduced work-in-progress inventory and increasing flexibility in the customer's needs.

Development of implantable probe for observation of microcirculation

Imachi K., Mochizuki S., Baba A., Isoyama T., Saito I., Takiura K., Chinzei T., Shiraishi Y., Yambe T., Abe Y.

Biocybernetics and Biomedical Engineering

2007

Vol. 27, no. 1-2

45-52

It is a long-term controversial point between the circulatory physiologists and the artificial heart researchers whether the pulsatile flow is essential for the living body or not [1]. In particular, since the axial flow pump, a continuous flow pump, that could keep the patients alive for more than a few years was introduced into use in clinical setting in 2001, this problem has been regarded as a very important physiological and pathophysiological issue. The objective of this study was to develop an implantable probe to observe microcirculation in artificial circulation. The principle of the probe developed in this study is the following: a thin living tissue is put directly on a highly integrated CCD (charge coupled device), and it is illuminated from the backside of the tissue with LED(light emitting diode). The microvascular nets in the tissue will be projected on the CCD surface, like a contact photograph, which produces an image on the TV screen. The problems are how to magnify them to be able to observe the erythrocyte flow, how to control the focus, how to electrically insulate them and how to make them compact. After several attempts to magnify the image, a micro lens having 2 mm in diameter, 2 mm long and 6 times magnification, was designed and made of acrylic resin. The lens was installed into a CCD camera with 8 mm in diameter and it was 60 mm long. The camera could magnify the image about 650 times on the 14 inches TV screen. A distinct microcirculation image, including the capillary flow, could be observed when the camera was implanted into the connective tissue under the skin of the rabbit. Now the focus control system is being developed with the camera to be implanted in animals on the long-term base.