Editorial & Advisory Board - Acta Technica Corviniensis

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ACTA TECHNICA CORVINIENSIS – Bulletin of Engineering CORVINIENSIS – BULLETIN of ENGINEERING ISSN: 2067‐3809 [CD‐Rom, online] copyright © UNIVERSITY POLITEHNICA TIMISOARA, FACULTY OF ENGINEERING HUNEDOARA, 5, REVOLUTIEI, 331128, HUNEDOARA, ROMANIA http://acta.fih.upt.ro ACTA TECHNICA CORVINIENSIS – BULLETIN of ENGINEERING ISSN: 2067‐3809 [CD‐Rom, online] copyright © UNIVERSITY POLITEHNICA TIMISOARA, FACULTY OF ENGINEERING HUNEDOARA, 5, REVOLUTIEI, 331128, HUNEDOARA, ROMANIA http://acta.fih.upt.ro © copyright FACULTY of ENGINEERING ‐ HUNEDOARA, ROMANIA 102
1. Darina MATISKOVÁ AUTOMATIC OF COMPONENT PRODUCTION AND MINIMALIZATION OF PRODUCTION COSTS 1. TECHNICAL UNIVERSITY IN KOSICE, FACULTY OF MANUFACTURING TECHNOLOGIES IN PRESOV, SLOVAKIA ABSTRACT: The notion of „machinability of materials“ is a complex of characteristics of the machined material which is monitored in the view of its fitness for the production in a certain way of machining. The machinability of materials is considered to be a parameter which characterizes the machined material in the process of cutting and expresses the degree of machining effectivity in terms of material of a product. When optimizing cutting conditions, under certain conditions it is possible to determine optimal serviceability of a machine according to a certain optimizing criterion independently on cutting condition optimization. When cutting conditions and tool durability optimizing, it is necessary to apply certain optimizing criterion within certain restraining conditions. The restrictions are given by technical parameters of a machine, tool, machined material, required quality of machined surface etc. The essential economic criterion is the amount of production cost. KEYWORDS: machine serviceability, production cost, economic reasons, optimizing INTRODUCTION The machinability of materials is considered to be a parameter which characterizes the machined material in the process of cutting and expresses the degree of machining effectivity in terms of material of a product. Cutting speed when considering certain cutting edge durability, surface roughness, degree of splinter deformation and resultant splinter shape and its proportions are utilized as evaluation of machinability indexes. Confrontation with the reference material enables to determine the rated machinability as one of the basic characteristics of machined material used when cutting conditions are optimized.[7] ECONOMIC REASONS FOR AUTOMATION OF COMPONENT PRODUCTION When considering machining process from the point of efficiency (productivity) production costs are oblivious. Yet, it is applicable exceptionally. Fig. 1.a. Dependence of N production costs and their components on cutting speed. Conventional machining Fig. 1.b. Dependence of N production costs and their components on cutting speed. CNC machining v . N – costs on machine work, c c N v – secondary work costs, N vn – costs to device exchange. In market mechanism it is required to produce a product in such economic conditions so that its sale price is acceptable and attractive. To start thinking about a production process it is necessary to get an idea about its cost structure. Using more expensive production installation the costs raise more rapidly. They reach minimum at higher cutting speed than when utilizing usual machines. Disobedience to this relation leads to sharp rise of production costs when machining using the CNC machines. The basic cost development scheme is in the fig. 1. © copyright FACULTY of ENGINEERING ‐ HUNEDOARA, ROMANIA 103
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ACTA TECHNICA CORVINIENSIS - BULLET
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ACTA TECHNICA CORVINIENSIS - Bullet
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Regional Editors from MALAYSIA Abde
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Imre TIMÁR University of Pannonia,
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Ioan MILOŞAN Transilvania Universi
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Member from GREECE Nicolaos VAXEVAN
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Editorial & Advisory Board - Acta Technica Corviniensis

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