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Dissertations / Theses on the topic 'Ball and feed'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Rodriguez, Ciro A. "Ball-nose end milling-development of criteria for automatic selection of spindle speed and feed rate /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487947501133616.

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2

Camalan, Mahmut. "Size-by-size Analysis Of Breakage Parameters Of Cement Clinker Feed And Product Samples Of An Industrial Roller Press." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614594/index.pdf.

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The main objective in this study is to compare breakage parameters of narrow size fractions of cement clinker taken from the product end and feed end of industrial-scale high pressure grinding rolls (HPGR) in order to assess whether the breakage parameters of clinker broken in HPGR are improved or not. For this purpose, drop weight tests were applied to six narrow size fractions above 3.35 mm, and batch grinding tests were applied to three narrow size fractions below 3.35 mm. It was found that the breakage probabilities of coarse sizes and breakage rates in fine sizes were higher in the HPGR p

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3

Davies, Gareth. "Determination and analysis of dimensions of 'feel' in tennis ball impacts." Thesis, Loughborough University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421304.

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4

Bartoš, Michal. "Náhon posuvové souřadnice portálového obráběcího centra pomocí pastorku a hřebene." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400990.

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This diploma thesis deals with the design the drive of the feed coordinate portal machining center using a gear rack and pinion. The thesis contains researches from the area of CNC machining centers for non-rotating parts and sliding linear systems. Market analysis of portal machining centers of type of lower gantry with a gear rack and pinion was done. Furthermore, several design variants are proposed in terms of positioning the drive on the machine. These variants were further compared and the best option was selected for the specified machine. Subsequently, the technical calculation of the

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5

Larson, Jennifer Lynn. "The Comparison of Airway Responses of Normal Horses Fed Round Bale versus Square Bale Hay." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/43464.

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Background – Feeding horses round bale hay (RBH) has been associated with airway inflammation. The purpose of this study was to determine if horses fed RBH for a 6-week period demonstrated more evidence of airway inflammation than horses fed square bale hay (SBH) of comparable quality. Hypothesis - The respiratory health of horses fed RBH will not differ from horses fed SBH of comparable quality. Animals – Two feeding groups of 15 healthy horses (mixed ages, breeds) from the University riding program. Methods – This was a prospective study performed during fall of 2009. At the beginning

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6

Priest, Penelope Ann. "Using a walking group to feel better : the healing balm effect." Thesis, University of Birmingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422320.

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This is a qualitative study, drawing on methods from grounded theory and ethnography, exploring the experience of members of a mental health day service walking group. Particular attention was paid to the psychological benefits of the physical activity, the outdoor environment and the social setting. Data were collected over a period of 10 weeks, via participant observation, interviews and a group discussion, and analysed using a grounded theory approach. The results are presented in terms of an overall model, The Healing Balm Effect, incorporating seven categories, which describe seven aspect

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7

Göbel, Lukáš. "Konstrukční návrh lineární osy pro těžký obráběcí stroj." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318778.

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The content of this thesis is the description the various component of the linear feed axis, which are used in heavy duty machine tools. This describes their features, advantages and disadvantages and on these basics, are selected different appropriate design variants. In the second part of this thesis has been drawn up constructional design of these variants. They were subsequently compared and then was chosen the most ideal one for the designed machine, which is heavy machine tool upper gantry type. The work also includes the 3D CAD model of the final version and drawing documentation.

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8

Horák, Miroslav. "Konstrukční návrh lineární osy pro těžký obráběcí stroj." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400950.

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This diploma thesis deals with the design of linear axis for heavy machine tool. The thesis describes the definition of heavy machine tool and its basic construction nodes. The next chapter describes the components of the linear feed assemblages, the basic principles of use and their advantages and disadvantages. On the basis of this research part there are selected variants of the solution and in the last part of the thesis there is a design of the axis X of the gantry machine tool. Part of the work is a 3D model of the proposed feed assemblages and part of the drawing documentation.

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9

Santos, Michael Aaron. "Fed to the Teeth: The Creation of the Title Role in Brecht's Baal." ScholarWorks@UNO, 2005. http://louisdl.louislibraries.org/u?/NOD,205.

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Thesis (M.F.A.)--University of New Orleans, 2005.<br>Title from electronic submission form. "A thesis ... in partial fulfillment of the requirements for the degree of Master of Fine Arts in Drama and Communication"--Thesis t.p. Vita. Includes bibliographical references.

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10

Chaabi, Mehdi. "Étude phytochimique et biologique d’espèces végétales africaines : Euphorbia stenoclada Baill. (Euphorbiaceae), Anogeissus leiocarpus Guill. & Perr. (Combretaceae), Limoniastrum feei (Girard) Batt. (Plumbaginaceae)." Université Louis Pasteur (Strasbourg) (1971-2008), 2008. https://publication-theses.unistra.fr/restreint/theses_doctorat/2008/CHAABI_Mehdi_2008.pdf.

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Nos travaux de recherche ont été consacrés à l’étude chimique et pharmacologique de trois espèces végétales africaines : une Euphorbiacée endémique de Madagascar : Euphorbia stenoclada, une Combretacée pantropicale d’Afrique de l’Ouest : Anogeissus leiocarpus et enfin une Plombaginacée saharo-arabique : Limoniastrum feei. Ils nous ont conduit à l’isolement et l’identification de 19 molécules, dont 2 nouvelles dans la famille, 9 identifiées pour la première fois dans le genre et 4 caractérisées pour la première fois dans l’espèce étudiée : - huit molécules ont été identifiées dans l’écorce d’An

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11

Здобицький, Андрій Ярославович, Андрей Ярославич Здобицкий та A. Y. Zdobytskiy. "Розробка стаціонарного обгортача рулонів сінажу і обґрунтування його технічно-технологічних параметрів". Thesis, Тернопільський національний технічний університет ім. Івана Пулюя, 2013. http://elartu.tntu.edu.ua/handle/123456789/2392.

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Робота виконана у Львівському національному аграрному університеті Мініс-терства аграрної політики та продовольства України.Захист відбувся „_17_” _жовтня_ 2013 р. на засіданні спеціалізованої вченої ра-ди Д 58.052.02 у Тернопільському національному технічному університету іме-ні Івана Пулюя за адресою: 46001, м. Тернопіль, вул. Руська, 56, ауд. 79. З дисертацією можна ознайомитись у бібліотеці Тернопільського національного технічного університету імені Івана Пулюя за адресою: 46001, м. Тернопіль, вул. Руська, 56.<br>Дисертацію присвячено питанням підвищення

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12

Adabi, Firouzjaee Jafar. "Remediation strategies of shaft and common mode voltages in adjustable speed drive systems." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/39293/1/Jafar_Adabi_Firouzjaeel_Thesis.pdf.

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AC motors are largely used in a wide range of modern systems, from household appliances to automated industry applications such as: ventilations systems, fans, pumps, conveyors and machine tool drives. Inverters are widely used in industrial and commercial applications due to the growing need for speed control in ASD systems. Fast switching transients and the common mode voltage, in interaction with parasitic capacitive couplings, may cause many unwanted problems in the ASD applications. These include shaft voltage and leakage currents. One of the inherent characteristics of Pulse Width Modu

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13

HSU, CHE-WEI, and 許哲瑋. "Diagnosis and Monitor of Ball Screw Feed Drive Systems." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/74236153991583279059.

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碩士<br>國立中正大學<br>機械工程系研究所<br>104<br>The purpose of this research is to develop a diagnosis system for ball screw feed drive systems based on monitoring the vibration signal on bearings and ball screw nut. This systems was divided into two parts. In the first part, a novel method in monitoring automatically the preload degradation for a ball screw feed drive system based on principal component analysis(PCA) is presented and its performance is assessed. Four feature from an vibration order spectrum, the actual ball pass order (ABPO), the vibration RMS amplitude at ABPO, the variance of vibration

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14

Tsai, Sheng-Chih, and 蔡勝植. "Thermal Deformation Estimation for a Ball Screw Feed Drive System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/42s8cb.

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碩士<br>國立臺北科技大學<br>冷凍空調工程系所<br>102<br>The position error of a feed drive system was primarily caused by thermal deformation of a ball screw shaft. A high-speed ball screw system can generate massive heat after long-term operations with greater thermal expansion produced, and thereby unfavorably impact the positioning accuracy of the feed drive mechanism. In this study, we applied the computational approach using the finite element method (FEM) to simulate the thermal expansion process for estimating the deformation of the ball screw system. In the model, the deformation of the ball screw shaft

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15

TSAI, PING-CHUN, and 蔡秉均. "Developments of Preload Monitoring Techniques of Ball Screw Feed Drive Systems." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/14641428688930592446.

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博士<br>國立中正大學<br>機械工程系研究所<br>105<br>Two preload monitoring techniques for ball screw feed drive systems have been developed in this study. The first focuses on the preload monitoring of ball screw and the estimation of the ball screw remaining useful life (RUL). The second is the preload monitoring aiming for linear guideway type (LGT) ball bearings. A novel method in monitoring automatically the preload degradation for a ball screw feed drive system based on self-organizing map (SOM) is presented and its performance is experimentally assessed. Four features from an vibration order spectrum, th

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16

Chen, Yen-Chen, and 陳彥辰. "Investigations of Vibration Reduction Techniques for Ball Screw Feed Drive Systems." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/n4r6dr.

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碩士<br>國立中正大學<br>機械工程系研究所<br>105<br>The main purpose of this study is to compare the effectiveness in vibration reduction of a ball screw feed drive system with various vibration reduction techniques. A simplified ball screw feed drive system which consists of the work table, coupler, motor and ball screw shaft has been created. The ball screw shaft is modeled as a structural beam, whereas the other components are modeled equivalently as the combination of spring, damper and mass. The Lagrange method is utilized to the equation of motion and the resulting vibration response is then obtain by th

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17

CHIANG, WEN-LIN, and 江玟菱. "Developments of Fault Detection Techniques for Ball Screw Feed Drive Systems." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/hsn559.

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碩士<br>國立中正大學<br>機械工程系研究所<br>106<br>The purpose of this research is to develop a diagnosis system for ball screw feed drive systems. The most prone to failure component in the feed drive system is the preload loss, followed by the rolling bearings. Furthermore, the main cause of the bearing failure is the installation error and/or component damage. The thesis consists of three parts. In the first part, several features extracted from the vibration measurements in frequency domain and time domain such as Sample entropy (SE), Root mean square (RMS), Singular spectrum entropy (SSE) and band energ

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18

Hsu, Ching-Chun, and 許清鈞. "Inertia Force Analysis of a Feed Drive Mechanism with High Helix Ball Screw." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/14494193486754924790.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>89<br>Under the environment of pursuiting for high production efficiecy, using more precision or higher speed machines and equipments is one of the workable solutions. Among this, high speed feed drive is a key component for the development of fast and efficient machines. However, inertia force generated by fast reciprocating motion will cause the vibration of the frame and degrade the accuracy and fatigue life of the machine. In order to reach the high production efficiency level, this problem must be thoroughly analyzed and solved. Base on the importan

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19

Leighton, Roger Gordon. "The effects of feed size distribution on a run-of-mine ball mill." Thesis, 2009. http://hdl.handle.net/10539/7094.

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As there is little published data on the operation of Run-of-Mine Ball Mills a data inspection and modelling exercise was carried out using an Anglo Platinum concentrator plant mill as the subject. The purpose was to establish whether differences in the size distribution of the feed rock had any effects on the mill operation and performance, and to attempt to quantify these effects. Analysis of data enabled correlations to be determined between the feed and product size ranges. It was found that there are good, positive correlations between the feed size and the product size. It was als

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20

Chang, Wei-Chen, and 張維真. "To analyse the dynamic response of a ball screw feed drive control system." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/ngmqyr.

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碩士<br>國立彰化師範大學<br>機電工程學系<br>107<br>To build a servo control model of a single-axis ball screw feed system with multi DOF consideration, this thesis establishes the dynamic system equation. The solution of the eigenvalues and eigenvectors shows the feed system consisting of several peaks in different mode shapes. Difference between the frequency response by adding the servo controller loop or not with the servo tuning are discussed. Solution of developed system mode shapes and dynamic frequency response provides an approach for control parameter’s tuning of a CNC machine. Such phase margin,

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21

Hosseinkhani, Yasin. "Control Methods for Improving Tracking Accuracy and Disturbance Rejection in Ball Screw Feed Drives." Thesis, 2013. http://hdl.handle.net/10012/8198.

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This thesis studies in detail the dynamics of ball screw feed drives and expands understanding of the factors that impose limitations on their performance. This knowledge is then used for developing control strategies that provide adequate command following and disturbance rejection. High performance control strategies proposed in this thesis are designed for, and implemented on, a custom-made ball screw drive. A hybrid Finite Element (FE) model for the ball screw drive is developed and coded in Matlab programming language. This FE model is employed for prediction of natural frequencies, mode

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22

Lin, Yi-Ting, and 林奕廷. "Study of Acoustic Emission Signals for Pretension of Ball Screw on feed Drive Table." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/90523316726283970869.

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碩士<br>國立中興大學<br>機械工程學系所<br>101<br>Transmission components “ball screws “ within the machine tool ,will have thermal displacement due to the temperature rise and it will affect machining accuracy of machine tool. So ball screw should be pretension. The main propose of this study is to find out a method to estimation the condition of ball screw pretension, and use it to predict pretension loss of ball screw. The pretension of ball screw should have influence on bearing, so we use the characteristic that can receive the elastic wave on solid material of Acoustic Emission(AE) Sensor, and install

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23

Kamalzadeh, Amin. "Precision Control of High Speed Ball Screw Drives." Thesis, 2008. http://hdl.handle.net/10012/4189.

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Industrial demands for higher productivity rates and more stringent part tolerances require faster production machines that can produce, assemble, or manipulate parts at higher speeds and with better accuracy than ever before. In a majority of production machines, such as machine tools, ball screw drives are used as the primary motion delivery mechanism due to their reasonably high accuracy, high mechanical stiffness, and low cost. This brings the motivation for the research in this thesis, which has been to develop new control techniques that can achieve high bandwidths near the structural fr

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24

Kao, Shih-Chen, and 高世承. "Study of AE Signals for Ball Screw Pretension and Preload Characteristic on Feed Drive Table." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/24570336241287686412.

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碩士<br>國立中興大學<br>機械工程學系所<br>99<br>The transmission component of machine tool, ball screw, will have thermal deformation due to temperature raised. It will reduce the precision of machine tool, so ball screw should be pretension. This study tries to find a method to predict pretension loss of ball screw. From some relevant scientific papers and experimental experiences, we learned that ball screw pretension should have influence on bearing. An Acoustic Emission Sensor with the feature of being able to detect elastic wave on solid material is mounted on the bearing seat. It can indirectly capture

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25

Xu, Zhang-Yin, and 許彰印. "The Analysis of Statistical Model of Surface Roughness in Ball- End Milling Under High-Feed." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/20781727357999115606.

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Hsu, Chang-Yin, and 許彰印. "The Analysis of Statistical Model of Surface Roughness in Ball- End Milling Under High-Feed." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/37291638203462032654.

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碩士<br>大同工學院<br>機械工程學系<br>85<br>In the process of machining free-form surfaces, the surfaces are often sculptured by a three-axis CNC machine with a ball-end mill cutter. After machining, improvement on the surface roughness becomes a considerable important problem because the surface roughness affects the performance and appearance of the products. In this study, experimental factors, including cutting speed, feed, axial depth of cut, inclination of specim

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27

Li, Meng-Syuan, and 李孟軒. "Research on Vibration Characterizations of Feed Drive Systems and Predicting the Ball Screw Remaining Life." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/55289695284729876197.

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碩士<br>國立中正大學<br>機械工程學系暨研究所<br>103<br>This thesis was divided into two parts. First part focuses on vibration characterizations of feed drive systems of machine tools. The feed drive system consists of ball screw, linear guideway, carriages, and ball bearing. The vibration characteristics of feed drive systems are studied with vibration measurements using accelerometers. Results show that the carriage vibration at the ball pass frequency and its multiples dominates the vibration of the feed drive system at low feed rate (e.g. under 1000 RPM). On the other hand, the ball screw vibration at its o

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28

Chen, Xiang-Yuan, and 陳詳元. "Investigation of a Ball Screw Feed Drive System Based on Dynamic Modeling for Motion Control." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/23559818440766403446.

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碩士<br>國立彰化師範大學<br>機電工程學系所<br>104<br>To control a single-axis ball screw feed system, this thesis establishes the model first and derives linear equation of motion and solves in frequency response. Solution of the eigenvalues and eigenvectors shows the feed system consists of several peaks in different mode shape frequency responses. Improved particle swarm optimization and hybrid particle swarm optimization are used to tune the gains of PID controller, iterative learning control gain and the bandwidth of zero phase Butterworth filter for reducing the tracking error with repetitions. Simulation

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29

Peng, Kuan-Heng, and 彭冠衡. "The Study of Using Oil-cooling System to Improve Positioning Accuracy of a Ball Screw Feed Platform." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/99061643163812103533.

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碩士<br>國立彰化師範大學<br>機電工程學系<br>101<br>Ball screw will produce heat and cause the temperature’s rising through continuous movement. This will result in the ball screw’s heat deformation which thereby influences the positioning accuracy and causes positioning errors. The purpose of this study is to improve the positioning accuracy of the ball screw due to the temperature rising. Therefore, an oil-cooling system used to suppress the temperature rising of the hollow ball screw is adopted in this paper. The pretension of the ball screw is changed to detect the variation of the positioning accuracy. Fi

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30

Chiang, Jun-Liang, and 姜俊良. "Research on Ball Screw Preload Loss by Analysis of Acoustic and Dynamic Characteristic of a Feed Drive Table." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/85785378452279306210.

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碩士<br>國立彰化師範大學<br>機電工程學系<br>98<br>A diagnosis method of ball screw preload loss via Hilbert–Huang Transform（HHT） and Multi-Scale Entropy（ MSE ） is applied in the research. First, the dynamic response of the ball screw is measured for finding characteristics of ball screw preload loss. Second, The method using for diagnosing a ball screw preload loss, comprises a process of sensing the motor voice when the ball screw is in operation. Empirical Mode Decomposition （ EMD ） is applied for obtaining a time-frequency spectrum via HHT. Finally a MSE complexity model, comparing the trend of complexity

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31

Shih, Yong-Ci, and 施永錡. "Using Independent Component Analysis on the Feed Drive Axial Stiffness of the Hollow Ball Screws with Cooling and Pretension Conditions." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/88942073123760863072.

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碩士<br>國立彰化師範大學<br>機電工程學系<br>102<br>The purpose of this study is to analyze the vibration signals of the hollow ball screw with oil cooling system individually by independent component analysis (ICA) for removing noise signal and then using the Empirical Mode Decomposition (EMD) to extract from high frequency to low frequency to find the corresponding frequency signal. Then, analyze the characteristic frequency of vibration by Fourier Transform (FFT). Finally, a Multi-scale Entropy (MSE) complexity model compares the trend of complexity of standard status with the signal of characteristic frequ

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32

Duarte, José Alberto Olivença 1984. "Da beleza das almas: para uma autópsia do corpo físico e social em Six feet under de Allan Ball." Master's thesis, 2009. http://hdl.handle.net/10451/349.

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Tese de mestrado, Estudos Anglísticos, Universidade de Lisboa, Faculdade de Letras, 2009<br>A morte sempre foi um dos grandes desafios da vida. A vontade de perenidade do corpo sustenta esse desafio e a relação que cada ser humano mantém com esta ideia é complexa, tendo originado rituais que vão evoluindo com os tempos. Em particular numa sociedade como a americana, a história mostra que a evolução das formas tradicionais do ritual funerário para as modernas nem sempre foi a melhor. Tendo como foco a série televisiva Six Feet Under de Allan Ball, a presente dissertação pretende pensar o co

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