In the master thesis a comprehensive literature overview, of domestic and foreign scientific papers, on cutting edge micro geometry preparation and vibratory polishing, is performed. This includes analysis of procedures for the cutting tool edge micro geometry preparation. Based on this an experimental setup for vibratory polishing of cutting tools has been developed. Besides polishing of the cutting tools, also the machining performance of cutting tools has been experimentally verified, by analyzing tool-wear and cutting forces. Machined has been cast steel 1.2333 with carbide end mills. Based on results, the correlation between cutting edge radius/micro geometry and cutting forces with tool-life is performed.
F.01 Acquisition of new practical knowledge, information and skills
COBISS.SI-ID: 13978651Study includes determination of the stability of milling tools from different basic carbide materials at treatment of tool steel in the soft state. It also includes the monitoring and classification of the chips during milling and monitoring surface roughness.
F.01 Acquisition of new practical knowledge, information and skills
COBISS.SI-ID: 14233883This study present the final findings of the project, where the key achievements are summarized. In the framework of the project, the solid carbide milling tools have been developed for machining tool steel in soft condition (OCR12VM (1.2379)). The significal improvements of the newly developed cutting tool in terms of tool life are presented. In addition, the cost analysis of the usage of developed cutting tools is presented.
F.01 Acquisition of new practical knowledge, information and skills
COBISS.SI-ID: 15532059In this thesis a method of resistance determination of spherical milling cutter of competitive providers at milling of tool steel at its soft state is analyzed and compared. At the beginning the theoretical background of milling processes together with the tools, and in more detail spherical milling cutters are described, which were used in experimental work. Later on theory material machinability follows and its determination. In the next part a report of the experimental work follows. The aim is to determine the ability of milling tool steel in soft state of four milling cutters of competitive providers of the same geometry and material at same conditions. From the collected data, the comparison is made and based on the results the best provider it is selected. For determination of the ability of milling tools the next measurements and data we needed: surface roughness, the tool wear of milling cutter from carbide milling tools and the chip form. The results and findings obtained with experiments and theoretical knowledge about milling are presented in figures and tables with following explanations.
F.04 Increase of the technological level
COBISS.SI-ID: 15781659This thesis describes the research work necessary for the development of a milling cutter, intended for milling tool steel in soft state. It was crucial to select a type of material most suitable for the tool and to consider the geometry as well as the manner in which to prepare the cutting edge. Finally it was imperative to choose the most suitable surface protective coating, which would offer the best wear resistance. The introductory chapter of the master's thesis presents the theoretical foundations behind the problem. In continuation, all the steps of the practical research work are presented. The wear on the milling cutters was measured on the free surface of the blade in pre-determined time intervals. In this way, we demonstrated the course of wear on the free tool surface depending on time. Based on tool wear the most appropriate surface protective coating was selected.
F.01 Acquisition of new practical knowledge, information and skills
COBISS.SI-ID: 15890715