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Dissertations / Theses on the topic 'Cutting force. eng'

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Published: 4 June 2021

Last updated: 5 February 2022

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1

Rigatti, Aldo Marcel Yoshida. "Avaliação da força de usinagem e energia específica de corte no fresamento com alta velocidade de corte /." Ilha Solteira : [s.n.], 2010. http://hdl.handle.net/11449/94480.

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Orientador: Alessandro Roger Rodrigues<br>Banca: Hidekasu Matsumoto<br>Banca: Eraldo Jannone da Silva<br>Resumo: Este trabalho apresenta um estudo sobre a influência das condições de fresamento na força de usinagem e na energia específica de corte. Foram ensaiados dois tipos de materiais que sofreram diferentes formas de tratamentos térmicos. O aço CL 23 (Eaton Ltda) foi normalizado, resfriado ao forno e resfriado ao ar, e o aço COS AR 60 (Usiminas S/A) foi empregado na condição "como recebido" e tratado termomecanicamente, onde a microestrutura foi refinada a 1,7 m. Para o primeiro material,

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2

Lançoni, Patrik Nascimento. "Estudo comparativo de medição de força de corte no processo de retificação /." Bauru : [s.n.], 2008. http://hdl.handle.net/11449/90830.

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Orientador: Paulo Roberto de Aguiar<br>Banca: André Nunes de Souza<br>Banca: Milton Vieira Júnior<br>Resumo: Os processos de usinagem são de extrema importância no ramo de indústria metalúrgica, uma vez que quase todas as peças de metais em que se exige uma alta precisão e qualidade de acabamento são produzidas por meio destes processos. Dentre os processos de usinagem destaca-se o processo de retificação, por sua precisão e bom acabamento. É essencial que se conheça bem este processo, já que por ser a última etapa da manufatura, qualquer problema compromente a peça e perde-se o trabalho reali

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3

Lazoğlu, İsmail. "Analysis of force system in ball-end milling." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/16022.

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4

Newby, Glynn. "Empirical analysis of cutting force constants in micro end milling operations." Thesis, Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-05202005-082651/.

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5

Bao, Wei-yu. "Tool cutting force modeling and wear estimation of micro-end-milling operations." FIU Digital Commons, 1999. http://digitalcommons.fiu.edu/etd/1386.

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The applications of micro-end-milling operations have increased recently. A Micro-End-Milling Operation Guide and Research Tool (MOGART) package has been developed for the study and monitoring of micro-end-milling operations. It includes an analytical cutting force model, neural network based data mapping and forecasting processes, and genetic algorithms based optimization routines. MOGART uses neural networks to estimate tool machinability and forecast tool wear from the experimental cutting force data, and genetic algorithms with the analytical model to monitor tool wear, breakage, run-out,

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6

Vančura, Tomáš. "Silové zatížení řezných nástrojů při obrábění." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417517.

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The theoretical part of the diploma thesis summarizes a knowledge of the force loading of the cutting tools and state of the art in the cutting force measurement. In the experimental part, work deals with the development of the software for a force records analysis. The main objective of the software is to automatise the processing and analysis of the measured force records. The functionality of the newly created software was verified by evaluating the circle-segment end mills experiments performed at the Institute of Manufacturing Technology of the Faculty of Mechanical Engineering, BUT.

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7

Tuysuz, Oguzhan. "Prediction of cutting forces in three- and five-axis ball-end milling with tool indentation effect." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/40071.

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In machining, the desired final shape is created in Computer Aided Design (CAD) environment and this information is forwarded to Computer Aided Manufacturing (CAM) phase in which the toolpath is generated and converted to machine specific commands for part manufacturing. The steps in CAD/CAM environments are geometry dependent only, and do not include the physics of the process. However, mathematical modeling of the machining operation gives the flexibility of identifying and resolving process related issues i.e. tool breakage, chatter vibrations and tolerance violations beforehand, which in t

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8

Feng, Hsi-Yung. "The prediction of cutting forces and the resulting machining errors in the ball-end milling process /." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487847761307671.

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9

Zdebski, Daniel. "The impact of tool performance on micromachining capability." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/7789.

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Micro-milling represents a versatile and fast manufacturing process suitable for production of fully 3D micro-components. Such components are demanded for a vast number of industrial applications including safety systems, environmental sensors, personalized medical devices or micro-lenses and mirrors. The ability of micro-milling to process a wide range of materials makes it one of the best candidates to take a leading position in micromanufacturing. However, so far it does not seem to happen. By discussion with various industrialists, low predictability of micro-milling process was identified

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10

Ozel, Tugrul. "Investigation of high speed flat end milling process-prediction of chip formation, cutting forces, tool stresses and temperatures /." The Ohio State University, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487951907958109.

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11

Dvořáček, Jan. "Analýza silového zatížení řezného nástroje při pětiosém frézování." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228829.

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The diploma thesis is focused on machining using the ball-end shank mill. Content of the preliminary part of the work is a shank mill characteristic and a consequent part shows a splitting of ball-end milling cutters, its application, the cutting tool geometry and a characteristic signs of machining. The cutting force model of the ball-end mill is presented as well. A part of proposed model is the conversion of the resultant force too. Practical part is aimed at cutting force analysis of the ball-end mill and the main purpose of this part is a quantification of the cutting force for different

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12

Al, Sofyani Sharaf. "Analytical Modeling and Experimental Analysis of Metalworking Fluids in theMilling Process." University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1494853268000644.

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13

Cheng, Yuan-Ming, and 鄭淵明. "Study of cutting force and cutting dynamics in End Milling." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/80333058935549398811.

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碩士<br>中原大學<br>機械工程學系<br>88<br>To enhance the machining performance, understanding of the cutting dynamics is one the important key to improve the machining accuracy and efficiency. A better control of the cutting dynamics can efficiently suppress the vibration caused by the interaction of cutting force and structure dynamics, so that the surface roughness of workpiece can be remained within a tight tolerance zone. In this study, both theoretical and experimental work has been done. In the theoretical part, first a cutting force model of end milling based on the determination of inst

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14

Nguyen, Nhu-Tung, and 阮如松. "Cutting Force Modeling and Investigation of Cutting Force Coefficients in Three-axis Flat-end Milling Processes." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/a25uk9.

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博士<br>國立高雄應用科技大學<br>機械與精密工程研究所<br>103<br>Milling is not only the most common processes in machining, but also is very popularly employed in computer numerical control (CNC) machines for metal material removal operations. Reliable quantitative prediction of cutting force coefficients and cutting forces in milling is very important to predict machining characteristics such as the power and torque requirements, machine tool vibrations, surface quality, geometrical accuracy, and stability, and so on, and to develop the machining processes. In this dissertation, a linear model of average cutting fo

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15

Lu, Kun-Xian, and 呂坤憲. "Cutting Force and Dimensional Error Prediction Models for General End Mill Cutting." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/6auxgb.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>96<br>End milling cutter widely used in many kinds of machining, especially for die and mould cutting, is one of the most important cutting tools. Besides flat end mill, many other types of end milling cutter, such as ball end mill, bull end mill and tapered ball end mill etc., are being used indispensably for a variety of part machining. In the past, papers regarding end mill cutting forces, flat end mill cutter are much more than the other ones. In this paper, a mechanistic cutting force prediction model for general end milling cutter is presented for predicting

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16

Hsiao, Shun-Te, and 蕭順德. "Study of Cutting Force in End Milling and Cutting Resistance Coefficients Estimation." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/49193865621187376420.

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碩士<br>中原大學<br>機械工程研究所<br>89<br>Many factors affect cutting force, including geometric shape of cutter, cutting conditions, material of cutter, material of workpicec, dynamics characteristics of machine structure, coolant of cutting. From mathematical model’s prediction, it is known that different material and conditions cause the cutting resistance coefficients. Since the cutting resistance coefficients will affect the cutting force extremely, finding methods for accuracy estimating it is the purpose of the study. This study proposes two methods to estimate the cutting resistance coefficients

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17

Hung, Ming-Hung, and 洪銘宏. "Identification of Cutting Force Coefficients in Ball-End Milling Process." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/11223385349004487547.

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碩士<br>國立中正大學<br>機械工程所<br>94<br>The critical part industry in mold, automobile manufacture and aircraft industry are developing vigorously. The geometry of a workpiece is getting complicated and the requirement for the precision of the workpiece surface is upgrading. And the surface precision is directly influenced by cutting forces, so the investigation of the cutting force becomes an important issue. Thus, the aim of this study is focused on the cutting force coefficients identification and the predicted of the cutting forces while the milling test is performed with Aluminum 6061-T6 which is

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18

Lin, Ming-Liang, and 林明良. "An Investigation on The Cutting Force Model for Ball End Mill." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/12956881574279088867.

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碩士<br>國立中興大學<br>機械工程學系<br>90<br>The variation of cutting force in metal cutting reflects characteristics, such as the surface quality and tool life, of the cutting process; and therefore plays an important role in the cutting process. As the application of ball end mill on the machining of mold and die, in particular at high spindle rotation, becomes common, cutting forces of ball end mills deserve to be investigated. The force model of a ball end mill, however, differs from that of a regular end mill due to the difference on geometry. This thesis investigates the cutting forces of ball end mi

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19

Hu, Jau Yu, and 胡昭瑜. "Simulation of End Milling Cutting Forces with The Consideratioin." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/36985250622525184682.

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碩士<br>國立台灣工業技術學院<br>機械工程技術研究所<br>84<br>The purpose of this research is to describe the cutting forces and the displacements of the cutter in end milling through two different modeling ─rigid spindle shaft and fl- exible spindle shaft. The cutting forces and displacements are compared at various speeds. In the analysis process, the assumed-mode method is first used , where the modes of a clamped-free beam are used as bases . The cutting forces mode

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20

Wang, Yi-Jen, and 王怡仁. "A Dynamic Model of Cutting Forces in End Milling." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/98998015489869729127.

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21

Tsai, Chia-Chang, and 蔡佳璋. "An Investigation on Dynamic Characteristics and Cutting Force of a Micro End Mill." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/45961833094353864605.

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碩士<br>正修科技大學<br>機電工程研究所<br>94<br>The dynamic characteristics and cutting force of a micro end mill were investigated in this dissertation. Vibration is very important to microminiature work pieces, because vibration will cause impairment in micro milling process. Before dealing with the vibration problem, it is necessary to understand primarily the structural vibration characteristics of a end mill. Finite Element Method（ANSYS）is employed to analyses the micro end milling’s structural vibration characteristics.In this investigation, the natural frequency , frequency response, buckling and cutt

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22

Huang, C. Y., and 黃朝鈺. "Force Model and Stability Analysis for Step-Over Cutting in Ball-End Mill." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/27377482200159154953.

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碩士<br>國立成功大學<br>機械工程學系<br>89<br>Force Model and Stability Analysis for Step-Over Cutting in Ball-End Mill Abstract This thesis presents an analytic force model for the slot, half-slot and step-over milling of the ball end milling processes. The analytic force model is established as the convolution of three process functions, namely tooth sequence function, coordinate transformation function and the elementary cutting function. Each of the three functions represents and describes the respective geometry and mechanics aspects of the milling process. Modeling for the step-o

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23

Huang, Yen-Ming, and 黃彥銘. "An analytical method to determine cutting force coefficients in micro ball end milling." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/08626174389192987983.

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碩士<br>國立高雄應用科技大學<br>機械與精密工程研究所<br>102<br>The micro ball-end milling is an important technique for processing 3D free surfaces of tiny part. The change of specific cutting force coefficients can be determined by utilizing the process of measuring cutting force, thus appropriate adjusting the process parameters of micro ball end milling is an important skill in the processing. In this paper, based on the convolution and Fourier's transformations theorems, the analytical models of predictive cutting forces which separate the forces into plowing and shearing effect, first harmonic force and identi

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24

LI, HOU-REN, and 李後仁. "A dynamic mechanistic model of cutting forces in end milling system." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/76435700672632535585.

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25

SHEN, YUN-SHENG, and 沈耘生. "Thermal Displacement Compensation of Spindle and Cutting Force Measurement of End-Milling for Intelligent Applications." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/ytx48k.

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碩士<br>國立虎尾科技大學<br>機械與電腦輔助工程系碩士班<br>106<br>Processing technology is the key to driving industrial development. The machining accuracy requirements of the machine tool are also becoming more and more important. There are three major errors of the machine tool, which respectively geometric, thermal and cutting force errors. The key to affecting machining accuracy is thermal deformation and cutting force stability. In order to improve the errors of the machine tool, the precision optimization of the machine is used as the research topic. Build intelligent compensation methods to improve thermal er

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26

Luo, Shan. "Toolpath and Cutter Orientation Optimization in 5-Axis CNC Machining of Free-form Surfaces Using Flat-end Mills." Thesis, 2015. http://hdl.handle.net/1828/6993.

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Planning of optimal toolpath, cutter orientation, and feed rate for 5-axis Computer Numerical Control (CNC) machining of curved surfaces using a flat-end mill is a challenging task, although the approach has a great potential for much improved machining efficiency and surface quality of the finished part. This research combines and introduces several key enabling techniques for curved surface machining using 5-axis milling and a flat end cutter to achieve maximum machining efficiency and best surface quality, and to overcome some of the key drawbacks of 5-axis milling machine and flat end cutt

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