Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 634 for “"Milling"”.
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Ball milling process
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1963
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High speed milling of titanium
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1983.
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Dynamic matrix control of milling circuits
… was to investigate the suitability of DMC for milling circuit control. This was conducted through simulation studies using models of two different milling circuits. A generalised software package was developed for the application and analysis of DMC. DMC was developed in the United States of …
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Optimisation of variable helix end milling tools
… chatter. This thesis focuses on the avoidance of milling chatter by using variable helix milling tools. Since milling chatter is strongly influenced by the frequency response function of the dynamic system, a preliminary study is first presented to assess the feasibility of non-contacting …
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Investigating carbocations using high speed ball milling
… reactions can occur under high speed ball milling conditions; the results were that primary alkyl halides undergo substitution reactions, while the reactions of secondary alkyl halides depend on the nucleophile. However, reactions that form a carbocation intermediate, such as, …
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Three dimensional milling using an abrasive waterjet
… focused on an investigation of metal milling using abrasive waterjet (AWJ) technology. After reviewing existing methods, a new tool named the Wobbler was tested. The test results showed that a very smooth milled surface could be achieved with this tool when it was operated with the …
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History of the Flour Milling Industry of Minneapolis
University of Minnesota Masters thesis. June 1916. 1 computer file (PDF); 71 pages.
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Cutter-workpiece engagement identification in multi-axis milling
… intersections between cutter and workpiece in milling. One of the steps in simulating machining operations is the accurate extraction of the intersection geometry between cutter and workpiece. This geometry is a key input to force calculations and feed rate scheduling in milling. Given that …
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Virtual three-axis milling process simulation and optimization
… to predict and optimize performance of milling processes up to 3-axis. Computationally efficient mathematical models are introduced to predict milling process state variables such as chip load, force, torque, and cutting edge engagement at discrete cutter locations. Process states are …
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Combined wet milling crystallisation methods for particle engineering
… and purification technique. Mechanical milling is employed post crystallisation as an offline unit operation usually in a separate dry solids processing facility for adjusting the particle size and shape attributes of crystalline products for downstream processing. An emerging and …
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Empirical model-based control for end milling process
… surface finish and the cutting force in the end milling machining process, a design of experiment has been conducted to determine the effect of two different materials (aluminium and steel) and the machining parameters (feed rate, spindle speed) at a predefined depth of cut. Regression model has …
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Evaluation of an Alkali Corn Wet Milling Process
… ton/day (105,000 bu/day) plant, the alkali wet milling process saved 20% in equipment costs and 2% in total production costs. The return on investment for the alkali wet milling process was 17.8% compared to 14.1% for the SO$\sb2$ process.
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Modeling and Analysis of Micro -End Milling Dynamics
… estimate the values of the faults in micro-end milling. Experimental validation of the model has been performed, and the model is shown to predict cutting forces and micro-end mill deflections within an average of 15%. Effects of process faults on micro-end mill vibrations have been studied …
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An optimizing control strategy for milling circuit operation
It has been recognized that significantly more benefit can be derived by operating processes at the economically optimal process conditions than by solely improving the regulatory control performance. This has been the motivation for an increased focus on optimizing control strategies where the set …
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Modeling and analysis of the chemical milling process
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Combined Mechanical and Command Design for Micro-Milling Machines
… limited by the speed of their manufacture. Micro-milling is one particular technology used to manufacture micro-scale parts which could benefit extensively from an increase in throughput. Micro-milling involves a rotating cutter slightly thicker than a human hair removing material while spinning …
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Virtual five-axis flank milling of jet engine impellers
… necessary to simulate the five-axis flank milling of jet-engine impellers in a virtual environment. The impellers are used in the compression stage of the engine and are costly, difficult to machine, and time-consuming to manufacture. To improve the productivity of the flank milling …
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