Purpose: Purpose of this paper is to present results obtained during developing new cutting tools for individual tool industry. The aim of the research was to develop customized ball end milling tools with longer tool-life. Design/methodology/approach: to this study of development of new tools was over four successive sets of experiments, where the tool material, cutting edge preparation (cutting edge radius), rake angle and coating were selected for achieving longer tool-life. Tool-life was monitored over measuring tool wear on the flank face of the tool; maximum allowed tool wear was set to VB = 0.3 mm. Findings: of this study are showing that with right combination of the tool material, cutting edge radius, rake angle and appropriate coating, tool-life can be prolonged significant. Research (and practical) implications: implications are reflected in the substituting of all used milling tools from renowned manufacturers with these newly developed tools in this tool industry. Originality/value: of this paper is visible over significant improvement in tool-life of milling tools, especially for the company who will be using these tools in their production.
COBISS.SI-ID: 15618843
Department for Management of Production Technologies from Faculty of mechanical engineering, Ljubljana, together with Institute "Jožef Stefan" and the company EMO developed customized ball end milling tools with longer tool-life. The experimental workflow has been designed to carry out four consecutive sets of experiments, as follows: 1. set of experiments – cutting tool material analyse; 2. set of experiments - the influence of cutting tool edge radius, 3. set of experiments - the influence of cutting tool rake angle and 4. set of experiments – the influence of cutting tool coatings on a cutting performance has been analysed. For all sets of experiments, machinability of used tool material or the cutting tool life have been analysed. Beside this, the roughness of the machined surface and the shape of chips have been monitored. The performance of the newly developed cutting tool has been compared also with competing cutting tool manufacturers. This work includes a presentation of the results obtained in the individual sets of experiments or final findings in terms of the optimal cutting tool material, cutting tool edge radius, rake angle and used coating for machining of the defined steel. Never than less, the comparison of new developed cutting tool tool-life in comparison to a competitive milling cutters has been presented.
COBISS.SI-ID: 15612443
Department for Management of Production Technologies from Faculty of mechanical engineering, Ljubljana, together with Institute "Jožef Stefan" and the company EMO developed customized ball end milling tools with longer tool-life. The experimental workflow has been designed to carry out four consecutive sets of experiments, as follows: 1. set of experiments – cutting tool material analyse; 2. set of experiments - the influence of cutting tool edge radius, 3. set of experiments - the influence of cutting tool rake angle and 4. set of experiments – the influence of cutting tool coatings on a cutting performance has been analysed. For all sets of experiments, machinability of used tool material or the cutting tool life have been analysed. Beside this, the roughness of the machined surface and the shape of chips have been monitored. The work present the actual state of the research.
COBISS.SI-ID: 14697243
The tool-wear of cutting tools has a very strong impact on the product quality as well as efficiency of the machining processes. Despite the nowadays high automation level in machining industry, tool-wear diagnostic that is measured of the machine tool, still prevent complete automation of the entire machining process. Therefore, its in-line characterization is crucial. Thus, the paper presents developed innovative, robust and reliable direct measuring procedure for measuring spatial cutting tool-wear in-line, with the usage of laser profile sensor. The technique provides possibility for determination of 3D wear profiles, as advantage to currently used 2D subjective techniques (microscopes, etc.). The use of proposed measurement system removes the subjective manual inspection and minimizes the time used for wear measurement. In the manuscript the system is experimentally tested on a case study, with further in-depth performed analyses of spatial cutting tool-wear.
COBISS.SI-ID: 14292507