Categorypublications

THE POSSIBILITIES TO REDUCE SURFACE ROUGHNESS

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In the paper, the results of the comparative studies of the surface roughness, as obtained after face milling, with the application of standard cutting inserts and Wiper inserts, have been discussed. The presented results of the studies show in what technological conditions it is possible to obtain the best effects of reducing the surface roughness.

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ROBOTIZATION OF THE PROCESS OF REMOVAL OF THE GATING SYSTEM

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Cleaning and removal of components of the gating system, and finishing of castings are the most labor-consuming and damaging to health foundry processes. This paper presents the esults of an analysis of labor consumption of the process of removal of gating systems of aluminium castings, which were carried out in a conventional manner using a band saw and
a boring machine, and using an industrial robot. In the final part of this paper the analysis of occupational hazard of work-stands is presented. It has been shown that the use of robotization leads to an increase both the productivity of the process and work safety. The use of an industrial robot allows to reduce the labor consumption of the process of removal of gating systems by 29,5% in relation to the non-robotized stand. Furthermore, on the robotized stand almost all the time needed for the process of removal of the gating system is connected with the machining. It represents 98.7% of the production cycle. In the case of non-robotized
stand, the machining takes 79% of the total time required for treatment of one piece of the casting.

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THE WAY OF EXPLOITATION ASSESSMENT IN THE CONDITIONS OF OBJECT-ORIENTED SERVICING

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The article discusses issues related to the ways of maintenance management of selected groups of production machines and devices. The first part identifies and characterizes two organizational models of machine servicing, i.e. the process model and the object model. It was justified that the object-oriented approach to machine servicing is an unusual concept, and it can be the basis for developing the models for the exploitation assessment of machines being the products of manufacturing processes, that require servicing tasks. As a result, it was proposed to use taxonomic methods for the purposes of developing a model, the analysis of which will allow the interpretation of the exploitation policy realized in the conditions of object-oriented servicing of machines and devices. The case study presented in the article confirms the possibility of building such models, and also justifies such analyzes for the purposes of shaping the exploitation decision-making process.

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ADHESIVE MIXING AND APPLYING DEVICE

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The aim of the present article is to present the design concept of a specialized device for mixing and applying adhesives (one and two-component ones) intended for unit production or laboratory use. The paper presents the initial assumptions of the device design, such as the type of production, application method and adhesive properties. Technological requirements for the adhesive mixing and applying device were enumerated. The technological requirements will include the characteristics of the method of adhesive application. The construction requirements of the designed device are also presented. The design of this device has been presented in the form of a 3D model, made with use of the SolidEdge software. The advantages and limitations of the concept of the designed device were also presented.

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