Thèses sur le sujet « CYLINDRICAL CNT »
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Thomas, David Andrew. « An adaptive control system for precision cylindrical grinding ». Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243279.
Texte intégralLeden, Pavel. « Výroba tělesa pro klíčový zámek ». Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229935.
Texte intégralUPADHYAY, NEHA. « ROLE OF HETEROATOMS ON CYLINDRICAL CNT SURFACE WITH HEMISPHERICAL TIP ». Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/15150.
Texte intégralHong, Li-Fen, et 洪麗棻. « Fatigue Analysis and Optimization Design ofThe CNC Cylindrical Grinder Universal Series ». Thesis, 2014. http://ndltd.ncl.edu.tw/handle/4tpz53.
Texte intégral國立虎尾科技大學
機械設計工程研究所
102
The purpose of this study is to lower deviation of workpiece by meeting high stability and rigidity to prevent the resonance in producing procedure of the CNC universal cylindrical grinding machine. Using finite element analysis software ABAQUS grinder machine tools for numerical simulation of several analysis for the following 1. Structural rigidity analysis, machine in external grinding load, the stress caused by the distribution and the deformation of the size of the whole structure. 2. Optimized design, the results of the analysis of components is corrected by setting the parameter to identify the best distribution of the material under the conditions comply with the limits, the structure to remove excess material to reduce costs and optimize the results before and after each comparison. 3. Vibration frequency analysis, analysis natural frequencies of grinder machine to avoid resonance. 4. Fatigue damage analysis, we aim on state of the transmission of outer diameter spindle to proceed in stress and fatigue life analysis by FE-SAFE Subroutine. In experiment section. We expect to obtain measured value of natural frequency. First, capturing the value of frequency response function by accelerometer with percussion hammer, and sending value which captured from hammer to spectrum analyzer for data processing. Finally, we import data to modal analysis software (ME’s scope)for establish a modal shape. The study result appears as following, max value of equivalent stress and average amount of displacement in Structural rigidity analysis are 0.67(mpa) and 0.92(μm). Base on the Hooke''s law of elasticity we can calculate static structural rigidity of machine is 63.3 (MNm-1). The result is less than equivalent stress yield stress of material FC300 300 (Mpa), so we can find out this grinder machine’s structure will not produce permanent deformation of inference in grinding processing. Optimal design optimization by comparing before and after, effectively reduce stress extreme value, the largest decline of about 5.43%. And modal analysis compared with the experimental, the average error percentage was less than 10% of parts. The whole structure percentage error does not exceed 3%, shows the results of analysis and practical percussion data Conformance with nice, has its reference value in the structural design phase. Finally, the outer diameter of the drive shaft in the dynamic analysis results, maximum stress is 231.3 (Mpa) less than S45C material yield strength 250 (Mpa), therefore, no distortion. The fatigue life of approximately 1,193,988 times, estimates into real life can use more than sixty years, from the viewpoint of structural strength, spindle has a good high breaking strength is designed to be safe.
Hung, Chung-Chi, et 洪宗淇. « Development of an In-process Multi-Measurement System for CNC Cylindrical Grinding Machines ». Thesis, 2011. http://ndltd.ncl.edu.tw/handle/91337124836315710614.
Texte intégral國立彰化師範大學
電機工程學系
99
The in-process measurement system of present CNC cylindrical grinding machine can only measure workpiece with single dimension. It requires more than one set of single stage in-process measurement system to measure different dimensions of workpiece, and the measuring dimension need to be manually adjusted and calibrated. The process is not qualified for the requirement of flexible production. Therefore, the study aims to develop an in-process multi-measurement system for cylindrical grinding machines by applying servo drives to change the dimension automatically. There is only one set of multi-measurement system required to control more than one dimension on the workpiece diameter without manual adjustments. The resolution of measurement element proposed in this study is 0.1 μm and three measuring diameters are tested through servo drives to access 50 measurement results. The accuracy in changing measuring diameter reaches ±2.0 μm, which conforms to the ISO 230-2 international standard. Moreover, one set of multi-measurement system not only replaces 6 sets of single stage in-process measurement system but also reduces 50 % of material expenses, thereby saves 14.96 workdays of reset operation time per year and enhances grinding productivity.
Chatterjee, Saikat. « Performance Characterization Of A Cylindrical Ion Trap Mass Spectrometer ». Thesis, 2009. https://etd.iisc.ac.in/handle/2005/1038.
Texte intégralChatterjee, Saikat. « Performance Characterization Of A Cylindrical Ion Trap Mass Spectrometer ». Thesis, 2009. http://hdl.handle.net/2005/1038.
Texte intégral« Stability analysis of laminated composite cylindrical shells and panelsstability analysis of laminated composite cylindrical shells and panels ». Tese, MAXWELL, 1997. http://www.maxwell.lambda.ele.puc-rio.br/cgi-bin/db2www/PRG_0991.D2W/SHOW?Cont=1946:pt&Mat=&Sys=&Nr=&Fun=&CdLinPrg=pt.
Texte intégralSonalikar, Hrishikesh Shashikant. « Numerical Investigation of Segmented Electrode Designs for the Cylindrical Ion Trap and the Orbitrap Mass Analyzers ». Thesis, 2016. http://etd.iisc.ac.in/handle/2005/3075.
Texte intégralSonalikar, Hrishikesh Shashikant. « Numerical Investigation of Segmented Electrode Designs for the Cylindrical Ion Trap and the Orbitrap Mass Analyzers ». Thesis, 2016. http://hdl.handle.net/2005/3075.
Texte intégralHUNG, CHUNG-LIANG, et 洪忠良. « The Benefit Analysis of Build to Customized Orders Tool Machine Factory Introducing Sub-Line Processing - Take P CNC Cylindrical Grinding Machine Company as an Example ». Thesis, 2019. http://ndltd.ncl.edu.tw/handle/92a633.
Texte intégral國立勤益科技大學
工業工程與管理系
107
Facing the trend of competition of internationalization and globalization, the machine tool industry has the only way to speed up production and optimize the distribution of resources through the production of sub-line processing. Expecting the expansion of manufacturing scale and economies of scale and scope can improve the competitiveness in the industry. This study explores the production planning problems encountered by small to medium-sized enterprise machine tool assembling company with the problem of the long manufacturing cycle times of customized products faced by a grinding equipment manufacturer in Taiwan. Traditionally, the production planning of such companies relies on the manager's subjective judgment and lacks a systematic decision-making plan. Therefore, it is impossible to flexibly examine the characteristics of each order, especially in the form of customized orders, which leads to poor decision-making quality. The scheduling is also quite time consuming. In this study, by analyzing the characteristics of related problems, it is found that the key problem of production planning can be solved by the flexible application of the sub-line production, and the optimal production capacity is combined with the front shop flow control. Taking into account the pace requirements of the main production line, including the personnel assembly rhythm, feeding time and other factors, can provide the best task scheduling in line with the customized products in a short time.
Shankar, Ganesh Hassan. « Electronics Instrumentation For Ion Trap Mass Spectrometers ». Thesis, 2009. https://etd.iisc.ac.in/handle/2005/1039.
Texte intégralShankar, Ganesh Hassan. « Electronics Instrumentation For Ion Trap Mass Spectrometers ». Thesis, 2009. http://hdl.handle.net/2005/1039.
Texte intégralNaveen, Reddy D. S. Srinivas. « Numerical Study of Directionality of Ion Ejection In Axially Symmetric Ion Traps ». Thesis, 2010. https://etd.iisc.ac.in/handle/2005/1922.
Texte intégralNaveen, Reddy D. S. Srinivas. « Numerical Study of Directionality of Ion Ejection In Axially Symmetric Ion Traps ». Thesis, 2010. http://etd.iisc.ernet.in/handle/2005/1922.
Texte intégralSonalikar, Hrishikesh Shashikant. « A Preliminary Study Of Fields In Split-Electrode Ion Traps ». Thesis, 2011. https://etd.iisc.ac.in/handle/2005/2373.
Texte intégralSonalikar, Hrishikesh Shashikant. « A Preliminary Study Of Fields In Split-Electrode Ion Traps ». Thesis, 2011. http://etd.iisc.ernet.in/handle/2005/2373.
Texte intégralTallapragada, Pavan K. « Geometry Optimization Of Axially Symmetric Ion Traps ». Thesis, 2007. https://etd.iisc.ac.in/handle/2005/497.
Texte intégralTallapragada, Pavan K. « Geometry Optimization Of Axially Symmetric Ion Traps ». Thesis, 2007. http://hdl.handle.net/2005/497.
Texte intégralShareef, I. Khader. « Axially Symmetric Equivalents Of Three-Dimensional Rf Ion Traps ». Thesis, 2010. https://etd.iisc.ac.in/handle/2005/2243.
Texte intégralShareef, I. Khader. « Axially Symmetric Equivalents Of Three-Dimensional Rf Ion Traps ». Thesis, 2010. http://hdl.handle.net/2005/2243.
Texte intégralSridhar, P. « A Preliminary Investigation Of The Role Of Magnetic Fields In Axially Symmetric rf Ion Traps ». Thesis, 2011. https://etd.iisc.ac.in/handle/2005/2111.
Texte intégralSridhar, P. « A Preliminary Investigation Of The Role Of Magnetic Fields In Axially Symmetric rf Ion Traps ». Thesis, 2011. http://etd.iisc.ernet.in/handle/2005/2111.
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