Elliptical Vibration Assisted Machining with Single Crystal Diamond Tools PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Optical quality surfaces on non-ferrous materials are commonly produced with single crystal diamond tools and precision turning machines. To add ferrous and brittle materials to the list of diamond turnable materials, a process know as elliptical vibration assisted machining (EVAM) has been developed. EVAM combines a small, less than 50 µm size, oscillatory tool path to the linear motion of standard orthogonal cutting. EVAM reduces cutting forces and tool wear by reducing chip thickness and bringing the tool tip out of contact with the workpiece 75% of the time. These characteristics may increase tool life and work piece material compatibility with single crystal diamond tools. A non-resonant piezo electric stack driven tool actuator was designed and built for a large range of operating frequencies (0-5KHz) and tool path dimensional flexibility (ellipse motion up to 50 x 9 μm). The diamond tool is mounted to a kinematic linkage. Finite element analysis (FEA) was used to aid the design of a light weight, high stiffness tool holder/kinematic linkage for high frequency operation. The effects of heat generation caused by high voltage, high frequency operation of piezo stacks were simulated using FEA and finite difference programs. These simulations were used to design and develop an efficient active cooling system. Tool path geometry and its effects on sliding distance, chip geometry, and surface finish were modeled with Maple software. Calculated chip geometry was successfully used to predict cutting and thrust forces. Force predictions were compared with measured forces for 6061 aluminum. A method generated for precision contour grinding was implemented to accurately predict theoretical surface roughness for EVAM machined surfaces. EVAM machining tests with brittle workpiece materials, such as silicon carbide, produced optical quality surfaces.
Author: Wei Bai Publisher: Springer Nature ISBN: 9811991316 Category : Technology & Engineering Languages : en Pages : 221
Book Description
Vibration assisted machining is becoming a potential machining process for difficult-to-cut materials in aerospace and biomedical applications. This book presents the fundamentals, modelling and applications of vibration assisted machining process. It provides investigations on cutting forces, temperature, cutting stability, surface topography, microstructure evolution and tool wear in vibration assisted machining. Three representative regimes (i.e., ultrasonically assisted machining, modulation assisted machining and elliptical vibration machining) are investigated in this book. The systematic and in-depth research in this process will provide important theoretical and practical reference for researchers and engineers in relative fields.
Author: Lu Zheng Publisher: John Wiley & Sons ISBN: 1119506328 Category : Science Languages : en Pages : 270
Book Description
The first book to comprehensively address the theory, kinematic modelling, numerical simulation and applications of vibration assisted machining Vibration Assisted Machining: Theory, Modelling and Applications covers all key aspects of vibration assisted machining, including cutting kinematics and dynamics, the effect of workpiece materials and wear of cutting tools. It also addresses practical applications for these techniques. Case studies provide detailed guidance on the design, modeling and testing of VAM systems. Experimental machining methods are also included, alongside considerations of state-of-the-art research developments on cutting force modeling and surface texture generation. Advances in computational modelling, surface metrology and manufacturing science over the past few decades have led to tremendous benefits for industry. This is the first comprehensive book dedicated to design, modelling, simulation and integration of vibration assisted machining system and processes, enabling wider industrial application of the technology. This book enables engineering students and professionals in manufacturing to understand and implement the latest vibration assisted machining techniques. Highlights include: Comprehensive coverage of the theory, kinematics modelling, numerical simulation and applications of vibration assisted machining (VAM) Case studies with detailed guidance on design, modelling and testing of VAM systems, as well as experimental machining methods Discussion of state-of-the-art research developments on cutting force modelling and surface texture generation Coverage of the history of VAM, its current applications and future directions for the technology Vibration Assisted Machining: Theory, Modelling and Applications provides engineering students, researchers, manufacturing engineers, production supervisors, tooling engineers, planning and application engineers and machine tool designers with the fundamentals of vibration assisted machining, along with methodologies for developing and implementing the technology to solve practical industry problems.
Author: Lu Zheng Publisher: John Wiley & Sons ISBN: 1119506360 Category : Science Languages : en Pages : 210
Book Description
The first book to comprehensively address the theory, kinematic modelling, numerical simulation and applications of vibration assisted machining Vibration Assisted Machining: Theory, Modelling and Applications covers all key aspects of vibration assisted machining, including cutting kinematics and dynamics, the effect of workpiece materials and wear of cutting tools. It also addresses practical applications for these techniques. Case studies provide detailed guidance on the design, modeling and testing of VAM systems. Experimental machining methods are also included, alongside considerations of state-of-the-art research developments on cutting force modeling and surface texture generation. Advances in computational modelling, surface metrology and manufacturing science over the past few decades have led to tremendous benefits for industry. This is the first comprehensive book dedicated to design, modelling, simulation and integration of vibration assisted machining system and processes, enabling wider industrial application of the technology. This book enables engineering students and professionals in manufacturing to understand and implement the latest vibration assisted machining techniques. Highlights include: Comprehensive coverage of the theory, kinematics modelling, numerical simulation and applications of vibration assisted machining (VAM) Case studies with detailed guidance on design, modelling and testing of VAM systems, as well as experimental machining methods Discussion of state-of-the-art research developments on cutting force modelling and surface texture generation Coverage of the history of VAM, its current applications and future directions for the technology Vibration Assisted Machining: Theory, Modelling and Applications provides engineering students, researchers, manufacturing engineers, production supervisors, tooling engineers, planning and application engineers and machine tool designers with the fundamentals of vibration assisted machining, along with methodologies for developing and implementing the technology to solve practical industry problems.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Machining with diamond tools, whether turning or milling has proven itself as themanufacturing process that produces the highest quality surface finish, with the leastamount of form error in the minimum amount of time. However, due to tool wear and theamount of force generated during conventional machining, diamond tools cannot be usedon carbon containing materials such as steel and brittle materials such as silicates. In anattempt to by-pass the material limitations of diamond machining, a new machiningprocess called vibration assisted machining (VAM) has been developed. VAM involvesoscillating the diamond tool, bringing it into and out of contact with the material in rapidsuccession. VAM can either be 1-dimentional (1D), oscillation in a single direction, or 2-dimensional (2D), a summation of two independent tools motions. Currently, researchefforts are focused on 2D vibration machining, 2D tool motion haven been shown to besuperior to 1D tool motion. Over the past 10 years, 2D VAM with diamond tools hasbeen demonstrated to reduce the amount of machining force and increase tool life whenmachining carbon-containing materials over that of conventional machining processes. However the mechanisms of this improvement have yet to be discovered. This researcheffort is focus on: 1) discovering the fundamental mechanical principals behind theimprovement, force reduction and tool wear, 2) developing a model that predicts thecutting forces and tool contact times, 3) establishes guidelines for the use of vibrationassisted machining and 4) developing an industrial grade 2D VAM servo. The reductionsin tool wear and machining forces are related to the path geometry of the diamond tooland the speed and the depth at which it engages the workpiece. A model has beendeveloped and experimentally verified for 2D VAM which predicts the machining forcesand workpiece / tool contact time if the material properties are known. Along with themodel, a set of charts has been developed for both 1.
Author: Junjie Zhang Publisher: Springer ISBN: 9811333351 Category : Technology & Engineering Languages : en Pages : 305
Book Description
Ultra-precision machining is a promising solution for achieving excellent machined surface quality and sophisticated micro/nano-structures that influence the applications of components and devices. Further, given the ultrathin layer of material removed, it is a highly coupled process between cutting tool and material. In this book, scientists in the fields of mechanical engineering and materials science from China, Ukraine, Japan, Singapore present their latest research findings regarding the simulation and experiment of material-oriented ultra-precision machining. Covering various machining methods (cutting, grinding, polishing, ion beam and laser machining) and materials (metal, semiconductor and hard-brittle ceramics), it mainly focuses on the evaluation of the fundamental mechanisms and their implementation in processing optimization for different materials. It is of significant theoretical and practical value for guiding the fabrication of ultra-smooth and functional surfaces using ultra-precision machining.
Author: Yong Huang Publisher: World Scientific ISBN: 9813271035 Category : Technology & Engineering Languages : en Pages : 738
Book Description
Handbook of Manufacturing provides a comprehensive overview of fundamental knowledge on manufacturing, covering various processes, manufacturing-related metrology and quality assessment and control, and manufacturing systems. Many modern processes such as additive manufacturing, micro- and nano-manufacturing, and biomedical manufacturing are also covered in this handbook. The handbook will help prepare readers for future exploration of manufacturing research as well as practical engineering applications.
Author: Xichun Luo Publisher: Academic Press ISBN: 0128131136 Category : Mathematics Languages : en Pages : 328
Book Description
Hybrid Machining: Theory, Methods, and Case Studies covers the scientific fundamentals, techniques, applications and real-world descriptions of emerging hybrid machining technology. This field is advancing rapidly in industrial and academic contexts, creating a great need for the fundamental and technical guidance that this book provides. The book includes discussions of basic concepts, process design principles, standard hybrid machining processes, multi-scale modeling approaches, design, on-machine metrology and work handling systems. Readers interested in manufacturing systems, product design or machining technology will find this one-stop guide to hybrid machining the ideal reference. - Includes tables of recommended processing parameters for key engineering materials/products for each hybrid machining process - Provides case studies covering real industrial applications - Explains how to use multiscale modeling for hybrid machining
Author: Nobuhiko Negishi
Author: Nobuhiko Negishi
Author: 
Author: Wei Bai
Author: Lu Zheng
Author: Lu Zheng
Author: 
Author: Junjie Zhang
Author: Brett Chandler Brocato
Author: Yong Huang
Author: Xichun Luo