Download or read book Rotary Ultrasonic Machining written by Marcel Kuruc and published by Springer Nature. This book was released on 2021-02-19 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the process and conditions of Rotary ultrasonic machining (RUM) of hard materials and summarizes the recommendation of proper machining parameters. The optimum conditions were applied for cutting edge preparation of CBN cutting inserts. The results presented in the book show that RUM is able to create controlled cutting edge preparation.

Download or read book Advances in Abrasive Based Machining and Finishing Processes written by S. Das and published by Springer Nature. This book was released on 2020-05-10 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the advances in abrasive based machining and finishing in broad sense. Specifically, the book covers the novel machining and finishing strategies implemented in various advanced machining processes for improving machining accuracy and overall quality of the product. This book presents the capability of advanced machining processes using abrasive grain. It also covers ways for enhancing the production rate as well as quality. It fulfills the gap between the production of any complicated components and successful machining with abrasive particles.

Download or read book Exploration of New Territories for Rotary Ultrasonic Machining written by Ping Hu and published by . This book was released on 2004 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rotary Ultrasonic Machining of Ceramics written by Zhijian Pei and published by . This book was released on 1995 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced ceramics are attractive for many engineering applications due to their superior special properties. One of the reasons hindering their market expansion is the high cost of machining with current technology. There is a crucial need for the development of machining processes which are capable of achieving high material removal rate while maintaining the surface/subsurface damage to the machined parts at an acceptable level. Rotary Ultrasonic Machining (RUM), a hybrid machining process combining the material removal mechanisms of diamond grinding and ultrasonic machining, has the potential to do so. The objectives of this research are to investigate the material removal mechanisms involved in RUM, to model the RUM process, and based on this, to extend the process to face milling and characterize its performance. In this dissertation, the characterization of the RUM process will be discussed first. Experimental evidence has showed that, in RUM of ceramic materials, there exist two different material removal modes: brittle fracture and ductile flow. A mechanistic model based on the assumption that brittle fracture is the dominating material removal mode has been developed. This model, for the first time, makes it possible to predict MRR from the process control variables together with an experimentally determined model parameter. The predicted relations between MRR and the process variables agree fairly well with the experimental trends. An approach to modeling the ductile mode removal mechanism will also be discussed. Next, the extension of RUM to face milling of ceramics will be discussed. The limitation of commercial RUM equipment is that only circular holes can be efficiently machined. Attempts have been made by other researchers to extend RUM to machining flat surfaces or milling slots. However, these extensions either changed the involved material removal mechanisms or had some severe drawbacks. To overcome the shortcomings of the existing methods, a new approach to extend RUM to face milling of ceramics is proposed. The development of the experimental apparatus, the preliminary experimental results, and the results of a set of fractional factorial experiments will be presented. A Boolean germ-grain model has been developed to characterize the process.

Download or read book Rotary Ultrasonic Machining of Difficult to machine Materials written by Palamandadige Fernando and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: High-performance materials such as composite materials, metal alloys, and advanced ceramics are attractive to engineering applications in aerospace, automobile and sport industries. Materials with superior properties are often difficult-to-machine due to their high strength, high hardness, and high toughness, which make the cutting force and temperature at the cutting interface very high and result to a short tool life. This limits their market expansion due to the high cost of machining with current machining procedures. However, the demand for high-performance materials is increasing in certain industries such as aerospace and automotive. In addition to machining of high performance materials, some of the conventional materials such as rocks also can be categorized into difficult-to-machine materials. Some causes which made rock drilling complicated are expose to several rock types in a single drilling, an infinite variability of rock properties, relatively high hardness and high abrasiveness of rocks, friction between rock and tool, severe wear and damage to tools etc. Therefore, it is crucial to develop more cost-effective machining processes for difficult-to-machine materials. Rotary ultrasonic machining (RUM), a hybrid non-traditional machining process combining the material removal mechanisms of abrasive grinding and ultrasonic machining, has the potential for low-cost and high quality machining of difficult-to-machine materials. Researchers have shown that RUM can attain a higher material removal rate than both ultrasonic machining (USM) and grinding. RUM can also drill deep holes with high accuracy, improved surface finish, and low cutting force and torque. The objectives of this research are to investigate the relationships between input variables and output variables of RUM of difficult-to-machine materials, to study the measurement methods of ultrasonic vibration amplitude and the effects of tool natural frequency on ultrasonic vibration amplitude, and to model RUM of rocks. In this dissertation, research has been conducted by experimental, numerical, and theoretical investigations on output variables including cutting force, torque, surface roughness, edge chipping, and delamination. The goal of this research is to provide new knowledge based on machining difficult-to-machine materials on RUM in order to improve the quality of the machined holes while decreasing the machining cost and to study the effects of machining variables (feedrate, tool rotation speed, and ultrasonic power) and tool variables (abrasive size and concentration, tool diameter, and tool geometry) on output variables. This dissertation firstly provides the introduction to difficult-to-machine materials and rotary ultrasonic machining. After that Chapter 2 investigates the effects of input variables on cutting force, torque, and surface roughness, and study the effects of machining variables, tool end angle, and the use of a backing plate on the delamination of RUM of CFRP. Chapter 3 studies the comparison between intermittent RUM and continuous RUM when machining K9 glass from the perspectives of cutting force, surface roughness, and chipping size. Chapter 4 investigates the effects of input variables on cutting force, torque, surface roughness, and edge chipping of the RUM of basalt, travertine, and marble, and development of a mechanistic predictive cutting force model for RUM of rocks based on the ductile mode removal and brittle fracture mode removal of rock under the indentation of a single abrasive particle. Chapter 5 discusses the effects of tool natural frequency on ultrasonic vibration amplitude. Finally, conclusions and contributions on RUM drilling are discussed in Chapter 6.

Download or read book Study of Micro Rotary Ultrasonic Machining written by Aarati Sarwade and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stochastic Modeling and Analysis of Rotary Ultrasonic Machining written by Jiaqing Wu and published by . This book was released on 2009 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Tool workpiece Interaction in Rotary Ultrasonic Machining of Ceramics written by Marc Aaron Simkin and published by . This book was released on 1999 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Machining of Ceramics and Composites written by Jahanmir and published by CRC Press. This book was released on 1999-01-04 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting modern advances in the machining of ceramics and composites, this work offers broadly based, fundamental information for selecting the appropriate machining processes and parameters, developing successful manufacturing strategies, and designing novel machining systems. It focuses on scientific and engineering developments affecting the present and future of machining processes.

Download or read book Machining of Advanced Ceramic Materials Using Rotary Ultrasonic Machining Process written by Deepak Prabhakar and published by . This book was released on 1992 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rotary Ultrasonic Machining of Hard to machine Materials written by Nikhil Churi and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium alloy is one of the most important materials used in major segments of industries such as aerospace, automobile, sporting goods, medical and chemical. Market survey has stated that the titanium shipment in the USA has increased significantly in last two decades, indicating its increased usage. Industries are always under tremendous pressure to meet the ever-increasing demand to lower cost and improve quality of the products manufactured from titanium alloy. Similar to titanium alloys, silicon carbide and dental ceramics are two important materials used in many applications. Rotary ultrasonic machining (RUM) is a non-traditional machining process that combines the material removal mechanisms of diamond grinding and ultrasonic machining. It comprises of a tool mounted on a rotary spindle attached to a piezo-electric transducer to produce the rotary and ultrasonic motion. No study has been reported on RUM of titanium alloy, silicon carbide and dental ceramics. The goal of this research was to provide new knowledge of machining these hard-to-machine materials with RUM for further improvements in the machining cost and surface quality. A thorough research has been conducted based on the feasibility study, effects of tool variables, effects of machining variables and wheel wear mechanisms while RUM of titanium alloy. The effects of machining variables (such as spindle speed, feed rate, ultrasonic vibration power) and tool variables (grit size, diamond grain concentration, bond type) have been studied on the output variables (such as cutting force, material removal rate, surface roughness, chipping size) and the wheel wear mechanisms for titanium alloy. Feasibility of machining silicon carbide and dental ceramics is also conducted along with a designed experimental study.

Download or read book Drilling Small Holes in Hard to Machine Materials by Rotary Ultrasonic Machining written by Clyde Treadwell and published by . This book was released on 2000 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Manufacturing Engineering and Technology written by Andrew Y. C. Nee and published by Springer. This book was released on 2014-10-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Springer Reference Work Handbook of Manufacturing Engineering and Technology provides overviews and in-depth and authoritative analyses on the basic and cutting-edge manufacturing technologies and sciences across a broad spectrum of areas. These topics are commonly encountered in industries as well as in academia. Manufacturing engineering curricula across universities are now essential topics covered in major universities worldwide.

Download or read book Opportunities for Advanced Ceramics to Meet the Needs of the Industries of the Future written by Douglas W. Freitag and published by . This book was released on 1998 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study on the Optimization and Process Modeling of the Rotary Ultrasonic Machining of Zerodur Glass Ceramic written by James Daniel Pitts and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotary ultrasonic machining (RUM), a hybrid process combining ultrasonic machining and diamond grinding, was created to increase material removal rates for the fabrication of hard and brittle workpieces. The objective of this research was to experimentally derive empirical equations for the prediction of multiple machined surface roughness parameters for helically pocketed rotary ultrasonic machined Zerodur glass-ceramic workpieces by means of a systematic statistical experimental approach. A Taguchi parametric screening design of experiments was employed to systematically determine the RUM process parameters with the largest effect on mean surface roughness. Next empirically determined equations for the seven common surface quality metrics were developed via Box-Behnken surface response experimental trials. Validation trials were conducted resulting in predicted and experimental surface roughness in varying levels of agreement. The reductions in cutting force and tool wear associated with RUM, reported by previous researchers, was experimentally verified to also extended to helical pocketing of Zerodur glass-ceramic.

Download or read book Technology mechanical and material approach on edgechipping in rotary ultrasonic machining of alumina written by Marek Zvonćan and published by . This book was released on 2013 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Intelligent Manufacturing written by Grzegorz Krolczyk and published by Springer Nature. This book was released on 2020-06-09 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book consists of select proceedings of the International Conference on Functional Material, Manufacturing and Performances (ICFMMP) 2019, and presents latest research on using the combined intelligence of people, processes, and machines to impact the overall economics of manufacturing. The book focuses on optimizing manufacturing resources, improving business value and safety, and reducing waste – both on the floor and in back-office operations. It highlights the applications of the latest manufacturing execution system (MES), intelligent devices, machine-to-machine communication, and data analysis for the production lines and facilities. This book will be useful to manufacturers of finished goods and of sub-assemblies in the automotive, agriculture, and construction equipment sector. It will also provide solutions to make production strategies exceptional and can be a useful reference for beginners, researchers, and professionals interested in intelligent manufacturing technologies.