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FUNDAMENTAL ANALYSIS ON THE DYNAMIC BEHAVIOR OF TOOLS WITH STRUCTURED FUNCTIONAL SURFACES IN CUTTING OPERATIONS 切削加工中结构功能面刀具动态行为的基本分析
MM Science Journal Pub Date : 2023-11-15 DOI: 10.17973/mmsj.2023_11_2023105
S. Jaquet, J. Baumann, R. Garcia, D. Biermann
{"title":"FUNDAMENTAL ANALYSIS ON THE DYNAMIC BEHAVIOR OF TOOLS WITH STRUCTURED FUNCTIONAL SURFACES IN CUTTING OPERATIONS","authors":"S. Jaquet, J. Baumann, R. Garcia, D. Biermann","doi":"10.17973/mmsj.2023_11_2023105","DOIUrl":"https://doi.org/10.17973/mmsj.2023_11_2023105","url":null,"abstract":"The productivity of machining processes is often limited by the occurrence of dynamic effects. The investigated approach intends to counteract tool deflections, and thus to damp and disrupt chatter vibrations by using milling tools with defined functional structures on the flank faces at the frontal cutting edges. For the fundamental investigation of the interactions between structural geometric properties and the tool-workpiece interaction, the engagement situation was geometrically evaluated on a highly abstracted level. Subsequently, hypotheses derived from this were validated experimentally in analogy tests with linear cutting motion. In these cutting experiments, dynamic deflections were induced by an external excitation of the specifically compliant modular tool system. Finally, the technologically most relevant structure variants were applied to milling tools and evaluated with regard to their dynamic behavior. This investigation was preceded by a simulation-based analysis of the material removal on the frontal flank face as a function of the process configuration, which is characterized by multiple intersecting cuts in milling processes. By specifically optimizing and coordinating the structure design and the process configuration, an increase in process stability and thus productivity of at least 100% could be achieved.","PeriodicalId":18723,"journal":{"name":"MM Science Journal","volume":"9 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136227303","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
RELATIONSHIP BETWEEN FATIGUE PROPERTIES AND CUTTING PERFORMANCES OF BILAYER TISIN/TIALN TOOL COATING 双层组织/钛合金刀具涂层疲劳性能与切削性能的关系
MM Science Journal Pub Date : 2023-11-15 DOI: 10.17973/mmsj.2023_11_2023100
T. Wang, X. Qi, Y. Wang, W. Ma, L. Yan, S. Zhang
{"title":"RELATIONSHIP BETWEEN FATIGUE PROPERTIES AND CUTTING PERFORMANCES OF BILAYER TISIN/TIALN TOOL COATING","authors":"T. Wang, X. Qi, Y. Wang, W. Ma, L. Yan, S. Zhang","doi":"10.17973/mmsj.2023_11_2023100","DOIUrl":"https://doi.org/10.17973/mmsj.2023_11_2023100","url":null,"abstract":"Impact test is a universal method to characterize the fatigue property of coated tools. For the bilayer TiSiN/TiAlN coated tool, the stress state in the cutting process with different feed rates were explored through cutting experiments. A high-temperature and high-frequency impact test platform was built. Through the impact tests with the introduction of the ‘pre-loading depth’, the fatigue properties and failure mechanisms of coatings under various test conditions were analyzed. Based on the comparative analysis of the results obtained in cutting experiments and impact tests, the mapping relationship between fatigue properties and cutting performances of the coatings was established, thus providing theory and practice foundation for characterization the cutting performance of coated tools under different cutting parameters by high-temperature and high-frequency impact tests.","PeriodicalId":18723,"journal":{"name":"MM Science Journal","volume":"9 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136227304","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
ASSESSMENT OF THE CONDITION OF NON-CONTACT THERMOMETERS 非接触式温度计的状况评估
MM Science Journal Pub Date : 2023-10-04 DOI: 10.17973/mmsj.2023_10_2023074
TATIANA KELEMENOVA, MICHAL KELEMEN, IVAN VIRGALA, LUBICA MIKOVA, ERIK PRADA, MARTIN VARGA, PETER MARCINKO, MAREK SUKOP, DOMINIK NOVOTNY
{"title":"ASSESSMENT OF THE CONDITION OF NON-CONTACT THERMOMETERS","authors":"TATIANA KELEMENOVA, MICHAL KELEMEN, IVAN VIRGALA, LUBICA MIKOVA, ERIK PRADA, MARTIN VARGA, PETER MARCINKO, MAREK SUKOP, DOMINIK NOVOTNY","doi":"10.17973/mmsj.2023_10_2023074","DOIUrl":"https://doi.org/10.17973/mmsj.2023_10_2023074","url":null,"abstract":"The article deals with the methodology of verification of non-contact thermometers. A black body calibrator intended for infrared non-contact thermometers, which is considered an etalon gauge, is used to assess selected metrological properties. Also contact thermometer was used to check black body temperature. Industrial infrared thermometers, hand infrared thermometers and infrared thermal cameras were evaluated. Absolute measurement errors, standard deviations and measurement uncertainties of these devices were monitored.","PeriodicalId":18723,"journal":{"name":"MM Science Journal","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135547290","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
MODELING DRIVE OF PRODUCTION MACHINE ACCORDING TO OUTPUT REQUIREMENTS 根据产量要求对生产机器进行驱动建模
MM Science Journal Pub Date : 2023-10-04 DOI: 10.17973/mmsj.2023_10_2023082
RADOMIR PRUSA, ROSTISLAV HUZLIK, TOMAS MAREK
{"title":"MODELING DRIVE OF PRODUCTION MACHINE ACCORDING TO OUTPUT REQUIREMENTS","authors":"RADOMIR PRUSA, ROSTISLAV HUZLIK, TOMAS MAREK","doi":"10.17973/mmsj.2023_10_2023082","DOIUrl":"https://doi.org/10.17973/mmsj.2023_10_2023082","url":null,"abstract":"The article shows how the drive modelling depending on the required output information, focusing on the machine tool area. In this way, the simulation process can be optimally set up and the output information from the model environment can be used efficiently. From the selection of input parameters to the detail and accuracy of the output values of the model itself. Many authors are dealing with digital twins of production machines. However, they treat the actual drive part of the machine tool as a black box. However, its function occupies a significant part in the creation of such a model. On the other hand, the second part of the authors focus specifically on the actuator modeling, but they do not consider the methodological approach according to the need of output information. This is related to the negative impact on the impracticality of deploying such models in real applications.","PeriodicalId":18723,"journal":{"name":"MM Science Journal","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135547421","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
ASSESSMENT OF SAFETY RISKS USING QUALIMETRIC METHODS 用定性方法评价安全风险
MM Science Journal Pub Date : 2023-10-04 DOI: 10.17973/mmsj.2023_10_2023021
ROMAN TRISHCH, OLESIA NECHUIVITER, HANNA HRINCHENKO, TETIANA BUBELA, MYKOLA RIABCHYKOV, IVETA PANDOVA
{"title":"ASSESSMENT OF SAFETY RISKS USING QUALIMETRIC METHODS","authors":"ROMAN TRISHCH, OLESIA NECHUIVITER, HANNA HRINCHENKO, TETIANA BUBELA, MYKOLA RIABCHYKOV, IVETA PANDOVA","doi":"10.17973/mmsj.2023_10_2023021","DOIUrl":"https://doi.org/10.17973/mmsj.2023_10_2023021","url":null,"abstract":"Assessment of occupational safety risks at work is a requirement of the Occupational Health and Safety Management System, which is regulated by international standards. For quantitative risk assessment, it is proposed to use qualimetric methods. It is proposed to obtain estimates of hazardous factors on a dimensionless scale using the error function (erf). Knowing the density function of the law of distribution of random variables of quantitative values of negative factors, the density function of their estimates on a dimensionless scale was obtained. Functionally dependent statistics were obtained. The density function makes it possible to determine the risk of a hazardous factor score falling into the hazardous assessment interval.","PeriodicalId":18723,"journal":{"name":"MM Science Journal","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135547439","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
RESEARCH AND DESIGN OF A PATH PLANNING USING AN IMPROVED RRT* ALGORITHM FOR AN AUTONOMOUS MOBILE ROBOT 基于改进rrt *算法的自主移动机器人路径规划研究与设计
MM Science Journal Pub Date : 2023-10-04 DOI: 10.17973/mmsj.2023_10_2023051
THAI-VIET DANG
{"title":"RESEARCH AND DESIGN OF A PATH PLANNING USING AN IMPROVED RRT* ALGORITHM FOR AN AUTONOMOUS MOBILE ROBOT","authors":"THAI-VIET DANG","doi":"10.17973/mmsj.2023_10_2023051","DOIUrl":"https://doi.org/10.17973/mmsj.2023_10_2023051","url":null,"abstract":"Path planning is innately viewed as a multi-objective optimization problem (MOOP) of the shortest path and the smallest distance to collision-free obstacles. The position of the mobile robot is definitively identified based on data derived from constructing maps with SLAM or extracting data from camera frames. Due to the complexity of the surroundings, obstacle avoidance still requires a complex sensor system with a high processing efficiency demand. The study provides an improved RRT* algorithm for mobile robot path planning in a given environment. RRT* will optimize the number of grid nodes based on the optimal cost functions of nodes in the searching environment. The improved RRT* algorithm with a safety cost increases the efficacy of obstacle avoidance. Hence, an improved RRT* algorithm based on the traditional RRT algorithm will remove redundant path nodes. Furthermore, the third-degree B-spline curve will smooth the path while ensuring MOOPs. Last but not least, simulations and experiments are shown to demonstrate the effectiveness of the suggested strategy.","PeriodicalId":18723,"journal":{"name":"MM Science Journal","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135547286","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
EVALUATION OF KNOWLEDGE MANAGEMENT IMPLEMENTATION 知识管理实施的评估
MM Science Journal Pub Date : 2023-10-04 DOI: 10.17973/mmsj.2023_10_2023048
PETR PERGNER, JAN HOREJC
{"title":"EVALUATION OF KNOWLEDGE MANAGEMENT IMPLEMENTATION","authors":"PETR PERGNER, JAN HOREJC","doi":"10.17973/mmsj.2023_10_2023048","DOIUrl":"https://doi.org/10.17973/mmsj.2023_10_2023048","url":null,"abstract":"The use of knowledge management tools is growing. With each implementation, the effectiveness of the implementation also needs to be evaluated. This article presents a method for evaluating this efficiency, an outline of its creation and an example of its use in an industrial enterprise.","PeriodicalId":18723,"journal":{"name":"MM Science Journal","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135547418","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
POSITIONING PERFORMANCE OF LOW-COST U-BLOX NEO-M8U MODULE IN URBAN ENVIRONMENT 低成本u-blox neo-m8u模块在城市环境中的定位性能
MM Science Journal Pub Date : 2023-10-04 DOI: 10.17973/mmsj.2023_10_2023080
MICHAL KACMARIK, DAVID FOJTIK
{"title":"POSITIONING PERFORMANCE OF LOW-COST U-BLOX NEO-M8U MODULE IN URBAN ENVIRONMENT","authors":"MICHAL KACMARIK, DAVID FOJTIK","doi":"10.17973/mmsj.2023_10_2023080","DOIUrl":"https://doi.org/10.17973/mmsj.2023_10_2023080","url":null,"abstract":"Global Navigation Satellite System (GNSS) positioning is nowadays used for many applications, including navigation of various man-drived or autonomous vehicles and pedestrians. As a significant part of these activities take place in cities or other environments which are not favourable for GNSS signal transmission, there is an option to improve the quality of positioning in them by combining the GNSS with other technologies. A fusion with inertial measurement units is probably the most common. The main objective of this paper was the evaluation of low-cost u-blox NEO-M8U module in kinematic positioning. Despite the module is primarily aiming on automotive industry, it was tested for a performance in low speed scenarios. The fusion mode combining input from a single-frequency multi-GNSS receiver and inertial unit was initialized and firstly calibrated on a standard passenger car and lately tested on a remotely controlled small vehicle. In a set of testing drives on three individual routes with a speed of motion around 5 km/h, the accuracy of horizontal position of the u-blox M8U module was in 35% of all measurements better than 1 m and in 84% better than 3 m.","PeriodicalId":18723,"journal":{"name":"MM Science Journal","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135547420","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
KNOWLEDGE STRATEGY, ITS CONTENTS AND CREATION 知识战略及其内容与创造
MM Science Journal Pub Date : 2023-10-04 DOI: 10.17973/mmsj.2023_10_2023047
PETR PERGNER, JAN HOREJC
{"title":"KNOWLEDGE STRATEGY, ITS CONTENTS AND CREATION","authors":"PETR PERGNER, JAN HOREJC","doi":"10.17973/mmsj.2023_10_2023047","DOIUrl":"https://doi.org/10.17973/mmsj.2023_10_2023047","url":null,"abstract":"One of the basic tasks of a business strategy is to ensure, among other things, the maximum use of all of an enterprise's resources. In the 21st century, one of the most important resources with a continuously increasing influence on an enterprise's results is the enterprise's knowledge. In order to make its acquisition and use as cost-effective as possible, the knowledge strategy of an enterprise must be defined. The core of this paper is the description of a new methodology for creating such a strategy. This methodology has been designed to enable both the easiest possible implementation in practical conditions and the most effective use of the knowledge strategy in supporting the creation and implementation of business strategy.","PeriodicalId":18723,"journal":{"name":"MM Science Journal","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135547419","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
NEW EFFECTIVE DISASTER FORECASTING METHODOLOGY 新的有效的灾害预测方法
MM Science Journal Pub Date : 2023-10-04 DOI: 10.17973/mmsj.2023_10_2023017
VOLODYMYR NAHORNYI, DANIELE CATALDI, VALENTINO STRASER
{"title":"NEW EFFECTIVE DISASTER FORECASTING METHODOLOGY","authors":"VOLODYMYR NAHORNYI, DANIELE CATALDI, VALENTINO STRASER","doi":"10.17973/mmsj.2023_10_2023017","DOIUrl":"https://doi.org/10.17973/mmsj.2023_10_2023017","url":null,"abstract":"The article discusses a new effective methodology for forecasting natural disasters. The technique is a combination of two methods of observing natural phenomena. The first method involves continuous monitoring of the electromagnetic signal observed at the epicenter of a future natural disaster. The second method, based on the signal trend analysis, predicts the moment of the expected natural event. The effectiveness of the methodology is demonstrated by the example of a retro predict of the Hunga-Tong volcano eruption, which confirmed the actual eruption date. Additionally, a prediction was made for the date of the future volcanic eruption.","PeriodicalId":18723,"journal":{"name":"MM Science Journal","volume":"221 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135547424","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
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