Cutting & Tools in Technological System最新文献_第3页

OPTIMISATION OF OPERATOR-MACHINE ASSIGNMENT PROBLEM USING EXCEL SOLVER 用excel求解器优化人机分配问题

Cutting & Tools in Technological System Pub Date : 2023-05-25 DOI: 10.20998/2078-7405.2023.98.03

T. Bányai, Viktória Meczkó

引用次数: 0

OPTIMISATION OF INTERRUPTED GRINDING PARAMETERS ACCORDING TO THE TEMPERATURE CRITERION 根据温度准则对中断磨削参数进行优化

Cutting & Tools in Technological System Pub Date : 2023-05-25 DOI: 10.20998/2078-7405.2023.98.06

Fedir Nоvikоv

{"title":"OPTIMISATION OF INTERRUPTED GRINDING PARAMETERS ACCORDING TO THE TEMPERATURE CRITERION","authors":"Fedir Nоvikоv","doi":"10.20998/2078-7405.2023.98.06","DOIUrl":"https://doi.org/10.20998/2078-7405.2023.98.06","url":null,"abstract":"In the paper analytical optimization of discontinuous grinding parameters according to temperature criterion is carried out and on its basis conditions for significant reduction of cutting temperature, which consist mainly in increasing the number of contacts of working ledges of discontinuous wheel with fixed cross-section of machined workpiece, are determined. It is established by calculations that providing 20 contacts the cutting temperature may be reduced up to 3 times in comparison with the conventional grinding by a continuous wheel. This is achieved in the conditions of deep interrupted grinding with relatively low workpiece speed, as in the conditions of traditionally used multipass interrupted grinding not more than 6 contacts of working ledges of an interrupted wheel with the fixed cross-section of the workpiece are realized and the cutting temperature is reduced only in the range of 50 %. It is established by calculations that the minimum of cutting temperature at discontinuous grinding is achieved under conditions of equality of lengths of the working shoulder and the notch on the discontinuous grinding wheel and their reduction. It is also established that excess of the length of the working ledge over the length of the notch of the discontinuous wheel leads to insignificant increase of the cutting temperature. This reduces the wear of the discontinuous wheel and increases the machining capacity without actually increasing the cutting temperature. The paper shows that the obtained theoretical solutions are a necessary condition for ensuring a significant reduction of cutting temperature in discontinuous grinding. A sufficient condition should be considered as complete or partial cooling of grinding zone between contacts of machined workpiece with working jaws of discontinuous grinding wheel by intensive supply of effective technological media into the grinding zone.","PeriodicalId":262881,"journal":{"name":"Cutting & Tools in Technological System","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129205425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

INVESTIGATION OF FACE MILLED SURFACE TOPOGRAPHY ON C45 WORKPIECE ASSUMING MOVEMENT AT 30° AND 60° TO FEED DIRECTION c45工件在与进给方向作30°和60°运动时的端面铣削形貌研究

Cutting & Tools in Technological System Pub Date : 2023-05-25 DOI: 10.20998/2078-7405.2023.98.12

A. Nagy, J. Kundrák

引用次数: 1

ANALYZING SURFACE INTEGRITY ELEMENTS OF HARD TURNED 16MNCR5 STEEL 硬车削16mncr5钢表面完整性要素分析

Cutting & Tools in Technological System Pub Date : 2023-05-25 DOI: 10.20998/2078-7405.2023.98.05

V. Molnár

引用次数: 0

EXPERIMENTAL INVESTIGATION OF TRIBOLOGY-RELATED SURFACE TOPOGRAPHY PARAMETERS AND HARDNESS OF 16MNCR5 CASE HARDENED STEEL 16mncr5淬火钢摩擦学相关表面形貌参数及硬度的实验研究

Cutting & Tools in Technological System Pub Date : 2023-05-25 DOI: 10.20998/2078-7405.2023.98.07

Nora Nagy

引用次数: 0

IMPROVING THE PROCESSING QUALITY OF CYLINDER LINERS USING COMBINED TECHNOLOGY 采用组合式工艺提高汽缸套加工质量

Cutting & Tools in Technological System Pub Date : 2022-03-02 DOI: 10.20998/2078-7405.2022.96.13

Yakiv Nemyrovskyi, I. Shepelenko, Ruslan Osin, E. Posviatenko

{"title":"IMPROVING THE PROCESSING QUALITY OF CYLINDER LINERS USING COMBINED TECHNOLOGY","authors":"Yakiv Nemyrovskyi, I. Shepelenko, Ruslan Osin, E. Posviatenko","doi":"10.20998/2078-7405.2022.96.13","DOIUrl":"https://doi.org/10.20998/2078-7405.2022.96.13","url":null,"abstract":"Due to the use of surface engineering methods, a combined technology for processing the working surface of internal combustion engines cylinder liners has been developed. The advantages and disadvantages of traditional liners processing technologies are analyzed, which allowed identifying ways to improve them. A new technological process of cylinder liners processing is proposed, which includes operations of deforming broaching and finishing antifriction non-abrasive treatment. The technological equipment and tools for the chosen technological process realization are chosen. Experimental studies of the proposed technical solutions feasibility are carried out. The microrelief of the treated surface, roughness parameters, hardness distribution according to the wall thickness were determined for the studied liners, and the amount of wear was determined for the liners after running-in. Parameters analysis of geometric, mechanical and tribological characteristics of the liners working surface, processed by the existing and proposed technology showed significant advantages of the latter. There is an increase in the productivity of processing part up to 4 times, reducing the cost of the tool up to 3 times, and in general – reducing the cost of restoring the liner. It is proved that the use of the proposed technology allows improving the physical-mechanical characteristics of the working surface: strengthening the surface layer to a depth of 0.3 mm, as well as obtaining a roughness close to the operational.","PeriodicalId":262881,"journal":{"name":"Cutting & Tools in Technological System","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127198548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

ON THE SURFACE ROUGHNESS OF 3D PRINTED PARTS WITH FDM BY A LOW-BUDGET COMMERCIAL PRINTER 低预算商用打印机FDM 3d打印零件表面粗糙度研究

Cutting & Tools in Technological System Pub Date : 2022-03-02 DOI: 10.20998/2078-7405.2022.96.06

Ioannis T. Christodoulou, V. Alexopoulou, N. Karkalos, E. Papazoglou, A. Markopoulos

{"title":"ON THE SURFACE ROUGHNESS OF 3D PRINTED PARTS WITH FDM BY A LOW-BUDGET COMMERCIAL PRINTER","authors":"Ioannis T. Christodoulou, V. Alexopoulou, N. Karkalos, E. Papazoglou, A. Markopoulos","doi":"10.20998/2078-7405.2022.96.06","DOIUrl":"https://doi.org/10.20998/2078-7405.2022.96.06","url":null,"abstract":"As additive manufacturing machines price is decreasing, while, at the same time, the expertise in the relevant field is rising, it is essential to test and evaluate the low-budget machines that are available for commercial use. Whilst low-budget machines are widely utilized for rapid prototyping and experimentation, they are not capable of producing parts with high surface quality and achieve high levels of repeatability due to low quality hardware and not optimized software. Having said that, the main aim of the current study is to experiment with a low budget Fused Deposition Modeling (FDM) 3D-Printer, and evaluate the surface roughness of the printed parts in respect to the angle from the print plate. Polylactic Acid (PLA) was chosen as filament material, while the printed parts surface roughness was measured according to the ISO ASTM 52902-2021 standard. The surface roughness was estimated in terms of the Ra and Rz values, while a statistical analysis was implemented in order some interesting conclusions to be deduced regarding the correlation between part orientation and surface quality.","PeriodicalId":262881,"journal":{"name":"Cutting & Tools in Technological System","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133940453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

THE EFFECT OF THE POINT SAMPLING TO THE RESULT OF COORDINATE MEASURING OF FREE-FORM SURFACE 点采样对自由曲面坐标测量结果的影响

Cutting & Tools in Technological System Pub Date : 2022-03-02 DOI: 10.20998/2078-7405.2022.96.10

Bálint Varga, Balázs Mikó

引用次数: 2

OPTIMISATION OF PURCHASING STRATEGY OF TOOLS AND COMPONENTS BASED ON EXCHANGE CURVE THEORY 基于交换曲线理论的工具及零部件采购策略优化

Cutting & Tools in Technological System Pub Date : 2022-03-02 DOI: 10.20998/2078-7405.2022.96.01

Á. Bányai

引用次数: 0

ANALYSIS AND COMPARISON OF THE WASTE MANAGEMENT DEVELOPMENT IN HUNGARY AND SLOVAKIA 匈牙利和斯洛伐克废物管理发展的分析与比较

Cutting & Tools in Technological System Pub Date : 2022-03-02 DOI: 10.20998/2078-7405.2022.96.03

M. Akkad, T. Bányai