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Dissertations / Theses on the topic 'Tooth profile'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Chien, Esther. "16S analysis of the subgingival biofilm and cytokine profile in patients receiving fixed orthodontic treatment." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu161485602285181.

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2

Bahk, Cheon-Jae. "Analytical Study on Nonlinear Dynamics of Planetary Gears." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1332371195.

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3

Tharmakulasingam, Raul. "Transmission error in spur gears : static and dynamic finite-element modeling and design optimization." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/5100.

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The gear noise problem that widely occurs in power transmission systems is typically characterised by one or more high amplitude acoustic signals. The noise originates from the vibration of the gear pair system caused by transmission error excitation that arises from tooth profile errors, misalignment and tooth deflections. This work aims to further research the effect of tooth profile modifications on the transmission error of gear pairs. A spur gear pair was modelled using finite elements, and the gear mesh was simulated and analysed under static conditions. The results obtained were used to

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Baaj, Yasser. "Mise au point d'une méthode utilisant des biopuces pour le diagnostic de Neuropathies Héréditaires." Limoges, 2008. https://aurore.unilim.fr/theses/nxfile/default/4f59cc9c-c7cc-412e-afa4-d9dfb186cb50/blobholder:0/2008LIMO310C.pdf.

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La méthode de puce à ADN devient progressivement répandue et attrayante pour le diagnostic moléculaire et le génotypage des mutations. Les améliorations de cette méthode se sont principalement focalisées sur l'augmentation de sa fiabilité. Nous rapportons, dans l'étude présente, le développement d'une méthode de génotypage où une puce à ADN portant des sondes dites « en épingle à cheveux » ("hairpin") dont la structure présente une tige et une boucle. Cette puce a été particulièrement conçue pour optimiser la spécificité d'hybridation des séquences complémentaires d'ADN. Nous avons employé cet

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5

Sanders, Aaron Anthony. "An Experimental Investigation of the Influence of Elliptical Root Shapes and Asymmetric Teeth on Root Stresses and Bending Fatigue Lives." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1290530501.

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6

Wu, fleet, and 吳琮欽. "Tooth Profile Analysis of Dry Pump." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/77526410578678323641.

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碩士<br>國立中正大學<br>機械工程學系<br>85<br>A mathematical model is proposed to calculate the coordinates of the rotorprofile and simulate the meshing process of the dry vacuum pump. Four basic curves, circular-arc, conjugate curve to the circular-arc, extendedinvolute curve, and extended cycloid curve, commonly used by the industry are included in the proposed mathematical model . According to theory of gearing , we can establish the meshing mechanism simulation of two rotors and find the mathema

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7

Jin, Kai-Wei, and 金凱威. "Simulation of Gear Shaving with Tooth Profile Modification and the Tooth Contact Analysis." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/fvg9r8.

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碩士<br>國立虎尾科技大學<br>機械與機電工程研究所<br>95<br>Gear shaving is the most important refinement method to manufacture the helical and spur gears by the CNC shaving machine. In this thesis, the rack cutter is used to generate a shaving cutter firstly, the shaving cutter is then used for the generation of gears. The rack cutter with modified profile proposed by Professor Litvin is used to derive the mathematical model of shaving cutter. The shaving process is then simulated according to the shaving machine to generate the gear tooth surface with double crowning. The TCA of two types of tooth surfaces, i.e.,

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8

CHUN-TSUN, KUO, and 郭俊村. "On the analysis of bicycle sprocket tooth profile." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/33224124395570991751.

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碩士<br>逢甲大學<br>機械與電腦輔助工程學系<br>102<br>Chain and sprocket are extensively used in bicycle transmission system. Chain and sprocket transmission is recognized not so precise as gear transmission. Unlike gears have standard involute profile, the sprocket doesn&;#39;t have a standard profile. Commercial sprocket profiles are usually constructed by two or three segments of curves or a small segment of straight line included. Those sprocket profiles design may find in engineering handbooks. There are few researches on the chain and sprocket transmitting efficiency analysis. This research adopts chain r

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9

LUO, SHI-HONG, and 羅仕宏. "PRECISION EVALUATION OF TOOTH PROFILE FOR CYCLOIDAL GEARS." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/qw7652.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>107<br>As factory production gradually evolves toward automation, robotic arm replacement is the current trend. Because the mechanical arm joint output is large, it is necessary to use a small volume and high-speed ratio precision reducer to increase the torque. Therefore, cycloidal gears with high gear ratio, small size, lightweight and low noise are often used in robot arms. The purpose of this paper is to develop the accuracy evaluation method of cycloidal gear and propose a mathematical model for accuracy evaluation. Firstly, the 2D point data of the tooth profil

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10

Chen, Jun-Hong, and 陳俊宏. "Study on the Tooth Profile Errors of the Hobbed Gear with Small Tooth Number." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/86909503427036251645.

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碩士<br>國立中正大學<br>機械系<br>90<br>Hobs have been widely used for manufacturing a variety of gears. Hobbing is one of the most efficient and economic ways to produce spur and helical gears. Due to complicate geometry in tooth form grinding, the hob with involute profile has difficulty in manufacturing. Hob with Archimedes profile is often used as a substitute. In the thesis, we proposed a mathematical model to simulate hobbing process with Archimedes hob. Based on the theory of gearing, the machine settings of the hobbing machine were calculated by the crossed involute helical gear meshing condition

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11

Liu, JinFa, and 呂進發. "Tooth Profile Modification and Stress Analysis for Micro Gear." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/43671685467661193305.

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碩士<br>正修科技大學<br>機電工程研究所<br>100<br>As the MEMS has been highly developed, products of micro or nanometer are invented and widely applied. To make better, more accurate gadgets is thus a key point of being researched, and the products made of those better gadgets are immediately applied on communication, 3C products, micro operation, micro robots. This essay focuses on skills related to hob-manufacturing micro gears and broach - manufacturing ring gears to discuss tool profile geometry, products geometry, and the way to build a parameterize design, and discusses the key point how the micro gear

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12

ZHANG, LI-LI, and 張立利. "The effect of tooth profile shifting factors on the surface durability of profile shifted gears." Thesis, 1988. http://ndltd.ncl.edu.tw/handle/97845449491123653967.

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劉怡廷. "The Relationship Between the Tooth Profile Curvature and Contact Stress." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/41547011981692272979.

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碩士<br>國立成功大學<br>機械工程學系<br>88<br>The involute gear is the important element of power transmitting. The pitting is the general phenomenon of the failure of gear. In the design of gears, designers usually utilize the equations based on the AGMA standards to calculate the surface contact stress. According to the AGMA standards, the estimation of the surface contact stress includes the geometry factor that is greatly affected by the radius of curvature of tooth profile. This study concentrates on curvature radius of tooth profile to set up the corresponded model for finite element simu

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14

Cai, Xuan-Long, and 蔡弦龍. "Motion Simulation Analysis of Harmonic Gear with Involute Tooth Profile." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/bb9k98.

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碩士<br>國立虎尾科技大學<br>機械設計工程研究所<br>101<br>Harmonic Drive has many advantages, high reduction ratio, small size, the output torque-to-weight ratio and a very small amount of backlash, these features make the harmonic gearboxes are widely used in various precision mechanical transmission. Since harmonic gear is flexible, friction, and low structural damping characteristics, and apply involute design the ideal harmonic gear tooth. Using a straight edge hobbing cutter tooth profile, theoretically the analysis as a harmonic gear tooth is feasible. Without considering Flex spline shell axial displacemen

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15

Chang, Yu-Hsin, and 張友信. "Characteristics Study of the Tooth Profile Modification of Cycloid Gear." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/y5mr46.

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碩士<br>國立虎尾科技大學<br>動力機械工程系機械與機電工程碩士班<br>105<br>In the industry, cycloid reducer gradually received more attention, due to it has a large transmission ratio, small size, light weight, high efficiency, smooth operation, and long service life. Cycloid gear is the most important part of cycloid reducer, because the tooth profile of the cycloid gear will affect the force and transmission accuracy. Therefore, the tooth profile of the cycloid gear needs to be studied deeply in order to improve the cycloid reducer efficiency. This study describes principle of forming the cycloidal profile and three dif

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16

HUANG, CHIN-CHEN, and 黃金振. "The Study of Optimum Design on Cycloidal Gear Tooth Profile." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/nba5v2.

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碩士<br>國立虎尾科技大學<br>機械設計工程系碩士班<br>107<br>The process of the cycloidal gear movement is driven by point contact, Therefore, if the tooth shape is poorly designed, the tooth surface of the cycloidal gear will be uneven during operation. The tooth surface wear is different and the transmission accuracy and service life are reduced. In order to make the tooth surface force close to uniform size. In this paper, the tooth surface is evenly stressed, Minimum tooth surface stress and Minimum tooth surface maximum stress wave front difference is the target. Use optimization analysis to achieve the above

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Shie, Shiau-Shuen, and 謝孝順. "Tooth undercutting and kinematic errors analysis on helical gear with a stepped triple circular-arc tooth profile." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/84185327545682916645.

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碩士<br>國立彰化師範大學<br>工業教育與技術學系<br>99<br>A stepped triple circular-arc tooth profile is a new type of imaginary rack cutter curves. Based on the study, the imaginary rack-cutter surfaces are two matched rack-cutter surfaces. The gear and the pinion tooth surfaces are generated by two matched imaginary rack-cutter surfaces, respectively. Based on theory of gearing and differential geometry, the meshing equation of the helical gear with a stepped triple circular-arc tooth profile can be obtained. Therefore, the mathematical model of the helical gear with a stepped triple circular-arc tooth profile c

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18

Yu, Jia-Wei, and 余家葳. "Tooth Profile Generation Method and Transmission Error Analysis of Internal-meshing Non-circular Gear with Tooth Modification." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/qec65f.

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碩士<br>國立中央大學<br>機械工程學系<br>106<br>The centrode curve of non-circular gear is a non-circular curve. In the mechanical transmission, the various speed ratio can be transmitted by a non-circular gear. A non-circular gear pair can be established according to the requirement of the speed ratio. The internal non-circular gear has the advantage of smaller volume than the external one. Internal non-circular is often used as the transmission medium of a non-fixed speed ratio. Because of the nonlinear speed ratio and its special geometry, designing an internal non-circular gear is more complicated than a

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19

Hsu, Pai-Hsiang, and 徐百祥. "OPTIMUM DESIGN FOR SPROCKET TOOTH PROFILE OF THE FREEWHEEL ON BICYCLES." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/53124902839020441583.

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20

Cheng, Yun-Hao, and 程雲豪. "Study on the Tooth Profile Design and Finite Element Analysis (FEA) of Harmonic Drives with Involute Profile and Double-Circular-Arc Profile." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/34774t.

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碩士<br>國立中央大學<br>機械工程學系<br>105<br>The purpose of this study is to analyze the meshing characteristics of harmonic drives (HD) with involute profile and double-circular-arc profile. Firstly, the 2-D mathematical model of flexsplines (FS) with involute tooth profile and double-circular-arc profile were developed by using respective rack cutter based on the theory of gearing. Then the engaging circular spline (CS) with conjugate tooth profile of FS was derived based on the enveloping theory and kinematic model of HD. Additionally, a mesh generation program was developed to discretize the FS based

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Chen, Chien-Fa, and 陳建發. "Tooth Profile Design on the Helical Gear with Small Number of Teeth." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/54488305907761107950.

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博士<br>國立交通大學<br>機械工程系<br>91<br>In order to obtain a gear reduction box with high gear ratio, usually it needs more than two gears for multi-stage assembly. Based on the considerations of the cost, the total number of gears and the volume of a gearbox, the use of multi-stage gears to obtain a reduction gear set with high gear ratio is not allowable. Instead, an one-stage reduction gear set should be considered and one of the gears must be extremely small. However, tooth undercutting on the generated gear may occur when the gear has a small number of teeth. This thesis investigates the tooth-pro

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Huang, Shih-Ying, and 黃釋瑩. "Study on Asymmetric Tooth Profile Design and Performance of the External Gear Pump." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/00255713288399318186.

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碩士<br>國立屏東科技大學<br>機械工程系所<br>99<br>Gear pumps have been widely used in the fluid transmission systems nowadays. Generally, an external gear pump has a pair of gears, which are operated in an operation space in the housing. A sealed volume in the housing is reduced by the gears and accordingly fluid is compressed as the gears are engaged with each other and rotated. However, the outflow fluctuation may be induced by such a periodic variation of the sealed volume. The flow leakage may also occur because of the clearances between the gears and the housing. Moreover, since the gear design constrain

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ZHENG, JIAN-HONG, and 鄭健宏. "Study on Tooth Profile Design and Simulation of Full-Meshing Helical Gear Pumps." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/nvf86u.

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碩士<br>國立虎尾科技大學<br>機械設計工程系碩士班<br>106<br>Gear pumps use spur gear pair to achieve the requirement of pumping and transmission, because spur gears are easy to obtain like gear shaving which is relatively low cost in gear manufacturing. However, there is a space between the gear tip and the root of the mating gear. This unmeshing space causes the fluid trapped which disturbs the pumping pressure and makes noise when the pump works. The traditional solutions of the fluid trapped is to make two grooves for suction and back flows near by the fluid-trapped area of the gear pairs on their front and bac

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ChiehWen, Tsay, and 蔡潔雯. "Mathematical Model for the Tooth Profile of Twin-Screw Compressor Using Lines of Action." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/80937838469228839232.

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碩士<br>國立中正大學<br>機械系<br>88<br>The design of tooth profiles of twin-screw compressor plays an important role to avoid the problem of leakage. In the process of design of the tooth profile, it is known that the line of action (i.e., the summation of instant contact points in the fixed coordinate system) causes great effects on the performance of the screw compressor. It is very important to have shorter length of line of action, the closing and continuous line of action and the shorter distance between the end of line of action and the housing cusp for designing good performance rotors. Therefore

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Wang, Chin-Yu, and 王進猶. "Studies on the Design and Form Grinding of Meshing Elements with Arbitrary Tooth Profile." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/67650894582296708530.

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博士<br>國立成功大學<br>機械工程學系<br>90<br>This thesis discusses the design and manufacture method for parallel axial meshing and without undercutting conditions. It presents for calculating the profile of a grinding wheel for finishing meshing elements with arbitrary tooth profiles on the three different sections. A general circular parameter method (CPM) is proposed to describe the geometry of a basic profile on the specific section. It can derive tooth surface, contact line and grinding wheel contour easily. Gear parameters and grinding variables that can improve contact line conditions and efficiency

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Huang, Shih-huei, and 黃詩惠. "Study on the Tooth Profile Generation of the Gear Grinding Machine with Grinding Worm." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/72248326149395138588.

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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>100<br>The generating gear grinding with grinding worm is a high efficiency gear tooth form finishing process by continuous indexing generating. 　　Mathematical model for the generation of the gear grinding machine is established according to the real gear grinder in this thesis. The motion of each axis in the mathematical model is derived according to the electronic gear box (EGB) function in the controller of grinder. Four specialized curve tables, which are used to make tooth flank modification, are also included in the mathematical model. 　　The developed simula

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蘇瑞隆. "Study on the performance evaluation and measurement on the tooth profile for twin-screw compressor." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/01917589010814564789.

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曾冠智. "Establishment of mathematical Model of Hob and the Analysis of the cutted tooth profile errors." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/47447997370241367217.

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碩士<br>國立中正大學<br>機械系<br>91<br>Hobs have been widely used for manufacturing a variety of gears. This technique is also one of the most efficient and economic procedures for gear industry. Besides the parameters of the hobbing machine, the manufacturing accuracy of the hob greatly effects the precision of the tool in the process of hobbing. This study aims to set up mathematical model to simulate the hobbing surface of the tool with the relieved and resharped cutting edge. And vanes the machine settings to discuss the influence on the tool, also finds on the settings of hobbing machine after the

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Chiu, Yu-Ting, and 邱鈺婷. "Profile-Shifted Transmission Design and Loaded Tooth Contact Analysis of Intersecting Helical Conical Gear Pairs." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/kvkxw2.

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碩士<br>國立中央大學<br>機械工程學系<br>106<br>Helical conical involute gear as a special type of cylindrical involute gear is not only easily manufactured, but also is able to apply for various spatial gear pair with any cylindrical involute gear. Conical involute gears are often used in the application of the drives with a small shaft angle because of low sensitivity to assembly error, and the controllable backlash by adjusting the axial position of the conical gear. However, the intersecting helical conical gear has high contact stress due to point contact. Consequently, the surface durability cannot be

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Chih-Hong, Kao, and 高志宏. "Study on the tooth profile design of twin-screw compressor derived from the line of action." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/16494903960387343512.

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碩士<br>國立中正大學<br>機械系<br>93<br>The leakage of rotors could be observed from the sealing line. The leakage is an important factor that influences the efficiency. Conventionally, the development of a twin screw rotor with high efficiency is started from designing a tooth profile. It is logical to observe the sealing line of the rotor to judge that the leakage is decreased or not. If the leakage is not decreased, modify the tooth profile till you obtain a good sealing line. Therefore, we try to develop a design process starts from the shape of the sealing line. Several segmented cubic splines are u

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Hsu, Ting-Hsiang, and 徐鼎翔. "Contact Force Analysis and Finite Element Simulation of the Cycloidal Speed Reducer with Modified Tooth Profile." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/42zv3e.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>104<br>The cycloidal speed reducer has been widely used in precision machinery. Compared with the traditional planetary gear speed reducer, the cycloidal speed reducer has larger torque density, less backlash, smaller noise, higher efficiency and stable dynamic contact force. This paper presents the force analysis of the cycloidal speed reducer. First, the model of the force analysis for the reducer in three different types were established and the calculation of force reaction between the cycloidal disc and the contact pins was introduced. Then, a procedure of the

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Jian, Shih Hung, and 簡世鴻. "Statics Modeling and Tooth-Profile Design for the Up- Shifting Process of Bicycle Rear Derailleur Systems." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/01581435182207974777.

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Chiou, Yuh Ren, and 邱昱仁. "Mathematical Modeling and Tooth-Profile Design for the Down- Shifting Process of Bicycle Rear Derailleur Systems." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/53136841923334085970.

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Hsieh, Tsung-Che, and 謝宗澈. "Optimization Design on Tooth Trace and Profile Modification of Gears for the Loading Large Gear Reducer." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/52483172735514928578.

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碩士<br>國立屏東科技大學<br>機械工程系所<br>102<br>Nowadays, gear reducers have already been widely applied to all kinds of industries. The main purpose gear reducer is to reduce the rotational speed of motor to the speed gear reducers need and to raise the output torque with as low a loss of power as possible. Transferring high power and enduring large loading, the gear reducers used in traditional heavy industry are usually huge, for which replacing parts, overhauling, and measure loading data are difficult. The research subject of this thesis is a four-stage gear reducer applied in steel rolling. For the g

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Wu, Jian-Syun, and 吳建勲. "The Study on the Precision of Tooth Profile Ground by Regrinding Worm on the Gear Grinding Machine." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/05952575486751887613.

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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>Gear is quite often used in mechanical industry. With highly demand of high precision machine, the need of improving flank accuracy of gear also increase relatively. Grinding is the most commonly used method for improving gear accuracy which can be divided into gear-form grinding method and gear-generating grinding method. The worm grinding wheel of gear-generating grinding method has the advantage of high efficiency and high accuracy which is suitable for mass production and small module’s gear grinding. The worm grinding wheel is commonly used in driving

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Hsin, Wu Chao, and 吳召信. "Study Design and Mathematical Model of the Tooth Profile for 3D Twin-Screw Compressor Using Curved Lines of Action." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/57599209532183114629.

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碩士<br>國立中正大學<br>機械系<br>90<br>The efficiency of the twin-screw compressor depends mainly on the leakage. Smaller leakage leads to higher efficiency. The conventional design process for the tooth profile of the twin-screw rotor is started from a pre-determined rotor addendum curve. According to the addendum curve, the conjugate dedendum are derive. Then, the length of the sealing line, the size of blow hole and volume efficiency are calculated. However, the conventional design process is very difficult to improve the tooth profile design because the performance of twin-screw rotor can not be obs

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Galal, M. Adel. "Assessment of mineral density profile of sound, de- and remineralized bovine enamel by means of abrasive biopsy procedure a thesis submitted in partial fulfillment ... pediatric dentistry ... /." 1987. http://books.google.com/books?id=Xa49AAAAMAAJ.

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Chen, Kuan-Hun, and 陳冠宏. "Study on Mathematic Model of the Cutting Edge on the Multi-start Hob And Analysis on the Tooth Profile Errors of the Hobbed Gear." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/51186635221618733660.

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碩士<br>國立中正大學<br>機械系<br>93<br>Hobbing is one of the most efficient and economic ways to produce spur and helical gears. Besides the setting of the hobbing machine, the geometric parameters of the hob and the feeds of the hobbing machine greatly effects the precision of the hobbed gear. This thesis aims to set up mathematical model for the cutting edge of multi-start hob and the surface topology of the hobbed gear. By varying the geometric parameters of the hob and the hobbing feeds , the precision and the surface roughness of the hobbed gear are investigated. The results of this thesis can be u

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Hösemann, Sonja. "Eine retrospektive Untersuchung zum Behandlungserfolg von Recallpatienten, die im parodontologischen Behandlungskurs von Studierenden betreut wurden." Doctoral thesis, 2013. http://hdl.handle.net/11858/00-1735-0000-0001-BA4A-5.

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Cheng, Hsiang, and 鄭. 翔. "A Study of Parametric Tooth Profiles by Deviation Functions." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/90544840181122722786.

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碩士<br>國立高雄應用科技大學<br>模具工程系<br>98<br>The purpose of this research is to use envelope theory and deviation function to develop the gears conjugate tooth profile mathematical models. The involute gears, cycloid gears, and circle arc gears will be derived based on these deviation functions, therefore, various types of polynomial and trigonometric functions of the mathematic models of rack profiles, conjugate gear tooth profiles and fillets will be established. The research will also utilize differential geometry and kinematics to explore the geometric properties and meshing characteristics of the c

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Huang, Chorng-Shiann, and 黃重憲. "On the Surface Design, Tooth Contact Analysis, and Optimum Design of Cycloidal Drives with Modified Tooth Profiles." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/03317185194236448182.

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碩士<br>國立成功大學<br>機械工程學系碩博士班<br>94<br>Cycloidal drives are used in many machinery. They have some advantages, such as larger range of speed ratio, more compact, lighter weight, higher capacity, and higher efficiency, etc. The main purpose of this study is to investigate the characteristics of the drives with modified tooth profiles and to determine the optimum amounts of tooth modifications such that they have better characteristics. 　　Based on the theory of conjugate surfaces, a general model for the profile design of the cycloidal wheel without or with various tooth modifications is develop

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Huang, Chia-Huang, and 黃佳凰. "A Study on the Generating of Tooth Profiles of Curvic Couplings." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/00400730842422990683.

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碩士<br>國立中山大學<br>機械與機電工程學系研究所<br>90<br>Curvic couplings have been widely applied to various industrial applications. Presently the Gleason No.120 special grinding machine developed by Gleason Works Co. is one of the commonly used machine tool for the curvic coupling manufacturing. On the other hand, in response to the issue of improving the domestic design and manufacturing ability, an alternative manufacturing method of curvic coupling is introduced in this study. In this study the geometrical characteristics of the novel gear profile are investigated. Firstly, applying the spatial transformat

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Ying, Liu-Lo, and 劉洛瑩. "A Study on the Optimization of Tooth Profiles for Curvic Couplings." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/21584615578996806309.

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碩士<br>國立中山大學<br>機械與機電工程學系研究所<br>90<br>The objective of this study is to investigate the influences of the shape of grinding wheel to the teeth profile and the contact pattern of Curvic couplings. Firstly, the equations of concave and convex teeth profiles are successfully derived by using coordinate transformation technique. Then, assembly errors and shape parameters errors of the grinding wheel are introduced, and the error-involved teeth profiles equations are also obtained. Finally, the optimization technique is employed to find the optimized parameters of the grinding wheel such that Curvi

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Kuo, Hsiu-Ming, and 郭修銘. "A Study on the Bevel Gear with Circular-Arc Tooth Profiles." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/80172398672065899713.

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碩士<br>國立中山大學<br>機械工程學系研究所<br>89<br>Nowadays, the bevel gears are widely applied in the industry for the intersected-axial transmission system. But the applications of the bevel gears are mostly limited to the usage of involute bevel gears. In this thesis, the bevel gear with circular-arc tooth profiles is derived by using general theorem of conjugate surfaces, coordinate transformation, constrained meshing equation, and spherical trigonometry. According to the bevel gears with circular-arc tooth profile derived above, the analyses and discussions of the interference are proposed. The interfere

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Hsieh, Ming-Lung, and 謝明隆. "A Design on the Bevel Gear with Circular-Tooth Profiles for Manufacturing." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/16875145346903926457.

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碩士<br>國立中山大學<br>機械與機電工程學系研究所<br>91<br>The bevel gears have been widely used for the intersected-axial transmission system for a long time. But mostly them are limited in the category of involute tooth profiles. It is believed that bevel gears with circular-arc tooth profile, similar to the Wildhaber-Novikov circular-arc helical gears, will improve the load capacity of the gear set. The bevel gears with circular-arc tooth profiles was firstly proposed by Kuo and Tsai in 2001. Although these new type of bevel gears can increase the load capacity of transmission, the expensive manufacturing p

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Jehng, Wern Kueir, and 鄭文魁. "A Study of the Tooth Profiles of Gear Set with Skew Axes." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/49008891988518125804.

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博士<br>國立中山大學<br>機械工程學系<br>87<br>A number of mathematical models used to depict the gear tooth profiles have been developed and published. In the present dissertation, the conjugate tooth profiles of gears with skew axes are characteristized by the following parameters : the pressure angle , the spiral angle, the distance of the skew axis between the two rotating axes with constant speed ratio, the perpendicular distance between the contact point and the I.S.A., and the constant speed ratio (m) etc. On spatial kinematics, the characteristic of these parameters are defined and deduced. They a

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ZHANG, HUI-LONG, and 張慧隆. "A study of parametric tooth profiles for spur gears and bevel gears." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/71090121268611648058.

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Lyu, Jia-Ming, and 呂家銘. "A Study on the Addendum Modifing and Computer Aided Manufacturing of Cycloid Drives with Two Tooth Difference for Circular Cross Section Tooth-Profiles." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/uqyw64.

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碩士<br>國立虎尾科技大學<br>動力機械工程研究所<br>93<br>This work presents an algorithm on geometric design of cycloid drives with two teeth difference and circular cross section tooth-profiles, as well as a methodology on their addendum modifing and computer aided manufacturing. The topological structure of cycloid drives is derived first. Then, the required surface equation is obtained. Finally, equations of meshing are constructed based on the fundamental gearing kinematics, coordinate transformation, envelope theory, and theory of conjugate surfaces. By combining the surface equation and equations of meshing

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Sung, Li Min, and 宋立民. "A Study on the Parametric Conjugate Tooth Profiles of Gear Sets with Skew Axes." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/33756993628995620846.

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博士<br>國立中山大學<br>機械工程研究所<br>83<br>In this study, the instantaneous screw axes and conjugate pitch hyperboloids of gear sets with skew axes are investigated. The concept of the N-plane that contains the commom normal of conju- gate tooth profiles at the contact point is proposed. The ma- thematical models and constraints for the parametric conjugate tooth profiles of gear sets with skew axes are presented. They degenerate to express the parallel results for gear sets with parallel and inter

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Zeijlstra, Anne Elisabeth. "Coagulation profiles of HIV positive and negative paediatric patients undergoing dental extractions at Charlotte Maxeke Johannesburg Hospital." Thesis, 2013. http://hdl.handle.net/10539/12684.

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Paediatric Human Immunodeficiency Virus (HIV) and Acquired Immunodeficiency Syndrome (AIDS) remain a significant health care challenge in South Africa. Oral health and coagulation are only two of the many problems experienced by HIV positive paediatric patients. This research report began with an observation that known HIV positive paediatric patients bled more than known HIV negative paediatric patients or those with unknown HIV status while undergoing dental extractions at Charlotte Maxeke Johannesburg Academic Hospital. The observation prompted a prospective, contextual, descriptive

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