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Showing 1 to 20 of 33 for “"Metal Cutting"”.
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Plastic Deformation in Metal Cutting
Made available in DSpace on 2014-12-09T17:13:43Z (GMT). No. of bitstreams: 1 6808201.pdf: 8779747 bytes, checksum: 1eba4474aff7be38e8d5bbfb5aef9885 (MD5) Previous issue date: 1967
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Thermal aspects of metal cutting
Thesis (Sc.D.) Massachusetts Institute of Technology. Dept. of Mechanical Engineering, 1952.
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The chip-tool interface in metal cutting
… between the chip and the rake face of a cutting tool. This interface is of great importance in many manufacturing operations. The experiments are conducted in a vacuum planing machine, which provides precise control of the atmospheric conditions during cutting. The chip/tool interface is …
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Temperature rise of the workpiece in metal cutting
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Mechanical Engineering, 1957.
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The generation mechanisms of acoustic emission in metal cutting
… emissions (AE), detected during the course of metal cutting, since, although quite a lot of research effort has been put into the use of AE to monitor metal cutting condition, the mechanism by which AE is generated is still not fully understood. <br/><br/>If chip generation is continuous, …
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Modeling metal cutting processes under consideration of elastic material properties
… models is the assumption of an ideally sharp cutting edge. The main reason for these simplifications is to reduce computation time. Within this work, the influence of the elastic material properties of Ti6Al4V on the two-dimensional simulation of an orthogonal turning process is examined. …
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Experimental and numerical analysis of chip formation in metal cutting
High speed cutting (HSC) is strongly discussed in modern production engineering. Many examples from industry show the advantages of this technology. However, the influence of high cutting speeds on machine tool, tool and workpiece quality have to be known. The current work describes the thermal and …
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Analytical modeling and simulation of metal cutting forces for engineering alloys
… material flow stress data under the condition of metal cutting. ii On the chip-tool interface, The chip-tool interface is assumed to consist of the secondary shear zone and elastic friction zone(i.e. sticking zone and sliding zone). The normal stress distribution over the entire contact length is …
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Multivariate tool condition monitoring in a metal cutting operation using neural networks
… Tool Condition Monitoring System (TCMS) for metal cutting operations (turning in particular) through the application of multivariate process parameters and perceptron neural networks. The initial phase of the work was concerned with a literature survey that was conducted to investigate the …
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Modeling and robust adaptive control of metal cutting via application of piezoactuator
… vibration control providing a force to the cutting system to overcome the chatter effect. To provide such a force, the piezoactuator has been introduced into the cutting system as an important controllable positioning device for ultra-precision machining. With the application of …
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A generalized approach for mechanics of chip formation in steady-state and dynamic orthogonal metal cutting using a new model of shear zone with parallel boundaries and its validation to cutting-forces prediction in self-piloting machining
… parallel-sided shear zone models. A steady-state cutting force model has been derived and adapted to orthogonal cutting of a self-piloting drilling. In the formulated model, special attention has been devoted to the thermomechanical state which defines the effect of the temperature on the yield …
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Approaches for chatter reduction in deep cavity and intricate surface milling
The goal of the project was to increase the metal removal rate or improve the surface quality of an intricate surface cut by a long overhang tool. The results of the metal cutting tests show that the surface quality of a finish cut at conventional milling speeds can be improved by approximately 50% …
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The use of variable spindle speed for vibration control in face milling process
… is one of the most important issues in the metal cutting process. It has been recognized for several decades that many machining process performance measures are influenced by vibrations: e.g., surface finish, tool wear, and cutting force characteristics. Vibrations result in a poor surface …
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Shear-based Deformation Processing and Characterization of Electrical Steel Sheet
… highly confined shear deformation in the form of metal cutting. Iron-silicon (Fe-Si) alloys, of major interest to electromagnetic applications, are characterized by poor workability. Through the interactive combination of simple shear, high strain rates, near-adiabatic heating and large …
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Dynamic Modeling and Dynamic Analysis of the Boring Machining System
The boring operation is a metal cutting process widely used in industry. The inherent properties of the long, slender boring bar make it susceptible to self-excited chatter during machining. The main focus of this thesis is directed at developing a system model which correctly describes the boring …
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The effects of variables and variable interactions on tin coated drill performance
… can be considered the most common of all metal cutting operations. Drilling can be accomplished on nearly all machines that can produce a relative rotation of the spindle, and/or the workpiece. These machines can include drill presses, lathes, milling machines and machining centers. Of the …
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eyeDNA : Tool Condition Monitoring for a desktop CNC milling machine
… a major obstacle to realizing full automation in metal cutting operations. In this thesis, we designed and implemented a low cost Tool Condition Monitoring (TCM) system using off-the-shelf sensors and data acquisition methods . Peripheral end milling tests were done on a low carbon steel workpiece …
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Orthogonal cutting in lubricated conditions
The work investigates the role of cutting fluids in metal cutting and comparas their effectiveness in orthogonal cutting conditions. The basic functions of a cutting fluid are defined and the lubricating function is selected as a feasible measure for comparison. The effectiveness of a cutting fluid …
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Domain decomposition based algorithms for some inverse problems
… algorithms are developed in the context of a metal cutting problem. The algorithms require measurement data within the physical body in order to retrieve the temperature field and the unknown source terms. It is shown that the algorithms can retrieve both the temperature field and the unknown …
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