Diploma thesis deals with the application of unconventional technologies of wire electro discharge machining in the production in the manufacture of punch with a focus on effective use of EDM machines for the manufacture of components with the similar character.

This thesis talk about practical application of wire electrical discharge machining (WEDM), which belongs to electro-erosion machining methods. This thesis is focused on the production of cutting dies produced by company FOR MIX s.r.o. Trenčín. We can consider the cutting die as a typical product of company´s product program. In the practical part of this diploma thesis, there is detail of technological aspects and operating costs for wire electrical discharge machining technology in specific condition of company FOR MIX s.r.o.

Measurement of the force loading is a significant type of measurement in mechanical engineering applied to analyse important aspects in the machining process. In addition to the determination of specific material constants, it is possible to analyse, for example, various machining strategies, geometries of tools or the degree of wear of the cutting edges of cutting tools. This master’s thesis deals especially with the last two mentioned aspects which are subjects of an experiment on end mills with PCD inserts sharpened by a different technology. In the introductory part the cutting forces are theoretically analysed along with their measurement possibilities and the technology of the production of the mills including their sharpening – WEDM and EDM-G. One chapter is concerned with the milling of plastic materials, as PVC was the material used for the workpiece during the experiment. The first experimental part is devoted to the analysis of sharpened tools followed by the measurement of forces using the piezoelectric dynamometer and the subsequent analysis of the influence of the different tool geometry. The last conducted experiment monitors how the overall cutting forces of individual end mills sharpened by different technology changed over specific milling time slots.

Electrical discharge wire machining, which represents non-conventional machining technology is up on very high technological level. However, due to this type of machining many of defects are set on the material and the quality of machined surface is changed according to set parameters of machine. Complex study was created with the aim of optimization these parameters according to final quality of surface and right wire speed. This study include experiment with 33 samples, every of these samples was machined with different parameters, results of these machining were analyzed.

The presented diploma thesis deals with the issue of wire electrical discharge machining of SiSiC ceramics. The first part explains the principles of electrical discharge machining, describes the WEDM technology and presents the properties of the advanced ceramics. The second part consists of a detailed analysis of the cutting process of eighteen samples obtained with systematically changing process parameters. Based on the obtained results from EDX analysis, SEM electron microscopy and topography there was performed an analysis of the influence of process parameters on the cutting speed, surface roughness, kerf width and number of wire breaks with usage of the selected brass cutting wire. From the evaluated results it was possible to select a combination of parameters that ensured a stable machining process.

The work deals with the technology of electrical discharge machining using a wire electrode. Described are machines, tools, wire electrode cutting parameters and advantages of this technology. The aim of the work is to quantify the cutting area with respect to dimensional accuracy, make an analysis of surface layer state and quality after wire cutting, and describe factors affecting this layer. In particular, emphasis is put on tool steel cutting.

The aim of this dissertation are future trends of electrical discharge machining in conditions of a small tool factory. In the introduction is presented the theory of non-conventional machining. The practical part is focused on valuation the current level of electrical discharge machining, the importance of the use in a tool Nástrojárna Ryšavý. It also compares the level of leading global manufacturers of electrical discharge machines and future trends of electro-discharge technology.

The thesis discusses an unconventional technology of wire-cut electro discharge machining. In the beginning there is a description of the basic principle, the fundamentals of electro discharge machining and its technological application. Further chapters characterise the wire-cut electro discharge machining, the wire electrodes used, the main parts of the machine, the cutting conditions and the advantages of this technology. The practical part is focused on the possibilities of the camera system during the production on a wire cutting machine and the comparison of nowaday´s machines in the manufacture of precise cutting tools in the middle-sized tool-room.

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Work is focused on theoretic analisis of manufacturing precise shears tools by unconventional technology closely focused on wire electro discharge machining consideration operation costs of this metod.It is discribing development of this method, machines and tools for electrical discharge machining. It is mention facts influencing quality of cut surface during manufacturing of cutting tools, strategy of cutting workpiece, stage and quality of surface layer after WEDM as long with economic viewpoint and benefits of WEDM technology.