Fault Forecasting of a Machining Center Tool Magazine Based on Health Assessment

Li, Guofa; Wang, Yanbo; He, Jialong; Hou, Tian-Wei; Du, Ling; Hou, Zhenhua

doi:10.1155/2020/5796965

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…As a basic design, consider the model of the MC200PF4 machining center, the features of which include (an enlarged kinematic diagram is shown in Fig. 1, a): -mounted all components and mechanisms on a rigid box-shaped bed, without fixing on the foundation; -a turntable, a mechanism for changing satellite tables, and a stand on which the tool magazine is mounted [21,22];…”

Section: Design Features Of MC Portal Layoutmentioning

confidence: 99%

Development of a Machining Center Drive With Increased Efficiency of Gearing

2023

IJOMAM

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The design of the main movement drive for a multioperational machine such as a machining center with a modified design of a gear gearbox is considered. A 3D modelling of the machining center drive mechanism with a portal layout was performed in the integrated computeraided design system KOMPAS-3D. Functional extended range of the C3D Modeler geometric kernel when constructing complex geometry of machine housing parts is proposed to use. The procedure for constructing gear rims with high accuracy and geometrically correct tooth surfaces in the CAD environment was applied. At the stage of forming the shape of the tooth of a multivariate choice of the tooth axial shape, it is possible to implement. A new idea to increase the efficiency of the cylindrical gear transmission of the machine speed box based on the modified tooth profile of the gears with inclined-arched teeth is put forward. An analytical apparatus for calculating the design and choosing the radius of the gear-shaping cutting head with known basic transmission parameters have been formed. A comparative analysis for the calculated values of the axial overlap coefficient in an involute helical spur gear and in a spur gear with inclined-arched teeth is carried out with the same engagement parameters, other conditions being equal. Numerical calculations for the modified version of the engagement with inclined-arched teeth compared with the involute helical gear in terms of load capacity have been shown.

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Section: Design Features Of MC Portal Layoutmentioning

confidence: 99%

Development of a Machining Center Drive With Increased Efficiency of Gearing

2023

IJOMAM

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“…Due to the inconsistent dimensions of each index, the influence of log-eliminating the dimensions and the sample data are all time-series data, so the stability needs to be tested. According to the results in Table 11, the first-order difference sequence is stationary [26][27][28][29][30][31][32][33][34][35], indicating a longterm relationship between these variables. Table 12 shows the test of the stationarity of the sample data.…”

Section: The Impact Of Foreign Direct Investment On the Economy Of Di...mentioning

confidence: 99%

Analysis Model Design on the Impact of Foreign Investment on China’s Economic Growth

Zhang

Xang

2022

Scientific Programming

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This research mainly analyzes the influence of foreign investment in the era of big data on China's economic growth, in the process of analyzing the impact of foreign investment on the national economy, based on the analysis of the current situation of foreign investment and error-correction model, etc., through the correlation coefficient matrix to determine the variables data needed to fit the model; after fitting the model, the residual model is extracted, and the stationarity of the residual sequence is tested . On the basis of the above, this paper analyzes the difference of foreign direct investment in different regions, combined with the coastal areas and central region model and actual situation analysis, analyzes the two foreign direct investment (FDI) development speeds, base development speed, and average development speed, at the same time for the two regions in 2017; the specific direction of FDI do a detailed analysis. Finally, a series of conclusions are obtained.

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“…Online condition monitoring is a significant concern in improvements of prognostics and health management (PHM) for mechanical equipment [1][2][3]. Necessary actions can be taken with scheduled maintenance to avoid the failure of mechanical equipment with successful condition monitoring techniques [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Research on Electrostatic Monitoring of Tribo-Contacts with Dynamic Adaptive Fusion Method

Liu

Wang

Zhang

et al. 2022

Mathematical Problems in Engineering

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Electrostatic monitoring is a unique and rapid developing technique applied in the prognostics and health management of the tribological system based on electrostatic charging and sensing phenomenon. It has considerable advantages in condition monitoring of tribo-contacts with high sensitivity and resolution. Unfortunately, the monitoring result can be affected due to the switch of operating conditions that reduces its accuracy. This paper presents a dynamic adaptive fusion approach, moving window local outlier factor based on electrostatic features to overcome the influence. Life cycle experiments of rolling bearings and railcar gearbox were carried out on an electrostatic monitoring platform. The MWLOF method was used to extract and analyze the experimental data, combined with the Pauta criterion to judge wear faults quantitatively, and compare with other feature extraction results. It is verified that the proposed method can overcome the influence of changes in working conditions on the monitoring results, improve the monitoring sensitivity, and provide an accurate reference for friction and wear faults.

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Fault Forecasting of a Machining Center Tool Magazine Based on Health Assessment

Cited by 8 publications

References 29 publications

Development of a Machining Center Drive With Increased Efficiency of Gearing

Development of a Machining Center Drive With Increased Efficiency of Gearing

Analysis Model Design on the Impact of Foreign Investment on China’s Economic Growth

Research on Electrostatic Monitoring of Tribo-Contacts with Dynamic Adaptive Fusion Method

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