製造自動化(金屬切削力學機床振動和CNC設計第2版英文版)/國外機械與電子信息教材系列
內容大鋼
本書重點介紹了金屬切削過程力學、機床動力學及振動、進給驅動設計和控制、CNC設計原理、感測器輔助加工和數控編程技術等知識。從切削過程力學的基本原理開始,深度討論了振動及顫振問題;也討論了數控編程和電腦輔助設計/電腦輔助製造(CAD/CAM)技術。文中還詳細介紹了驅動執行機構、反饋感測器的選擇、進給驅動系統的建模與控制、軌跡實時生成和插補演算法的設計、面向數控系統的誤差分析等。每一章都包括從企業實際、設計項目和工作問題中篩選的案例。
本書特別適合高年級本科生和研究生,以及研發工程師閱讀,讀者將在這本書中找到一個清楚和徹底的方式來學習金屬切削力學的工程原理、機床振動、數控系統設計、感測器輔助加工,以及CAD/CAM技術等。
作者介紹
(加)優素福·阿爾丁塔斯
優素福·阿爾丁塔斯(Yusuf Altintas),國際製造自動化領域知名學者、教授。Yusuf Altintas教授現任加拿大皇家科學院(RSC)院士、國際生產工程學會(CIRP)主席、加拿大工程院院士、美國機械工程師學會(ASME)和國際製造工程師學會(SME)會士、加拿大英屬哥倫比亞大學(UBC)機械工程系終身教授。作為享譽世界的製造領域著名專家,主要研究方向為金屬切削、機床振動、控制和虛擬加工等,其著作Manufacturing Automation: Metal Cutting Mechanics, Machine Tool Vibrations, and CNC Design, Second Edition被業界廣泛使用。他領導的實驗室開發了先進加工過程模擬工具(CUT。PRO)、虛擬加工過程模擬工具(MACH*PRO), 以及開放式模塊化數控加工系統(Virtual CNC),這些產品被全球機械加工領域超過200家公司和研究機構使用。
目錄
CHAPTER ONE INTRODUCTION
CHAPTER TWO MECHANICS OF METAL CUTTING
2.1 Introduction
2.2 Mechanics of Orthogonal Cutting
2.3 Mechanistic Modeling of Cutting Forces
2.4 Theoretical Prediction of Shear Angle
2.5 Mechanics of Oblique Cutting
2.5.1 Oblique Cutting Geometry
2.5.2 Solution of Oblique Cutting Parameters
2.5.3 Prediction of Cutting Forces
2.6 Mechanics of Turning Processes
2.7 Mechanics of Milling Processes
2.7.1 Mechanics of Helical End Mills
2.8 Analytical Modeling of End Milling Forces
2.8.1 Mechanistic Identification of Cutting Constants in Milling
2.9 Mechanics of Drilling
2.10 Tool Wear and Tool Breakage
2.10.1 Tool Wear
2.10.2 Tool Breakage
2.11 Problems
CHAPTER THREE STRUCTURAL DYNAMICS OF MACHINES
3.1 Introduction
3.2 Machine Tool Structures
3.3 Dimensional Form Errors in Machining
3.3.1 Form Errors in Cylindrical Turning
3.3.2 Boring Bar
3.3.3 Form Errors in End Milling
3.4 Structural Vibrations in Machining
3.4.1 Fundamentals of Free and Forced Vibrations
3.4.2 Oriented Frequency Response Function
3.4.3 Design and Measurement Coordinate Systems
3.4.4 Analytical Modal Analysis for Multi–Degree-of-Freedom Systems
3.4.5 Relative Frequency Response Function between Tool and Workpiece
3.5 Modal Testing of Machine Structures
3.5.1 Theory of Frequency Response Testing
3.5.2 Experimental Procedures in Modal Testing
3.6 Experimental Modal Analysis for Multi–Degree-of-Freedom Systems
3.7 Identification of Modal Parameters
3.7.1 Global Nonlinear Optimization of Modal Parameter Identification
3.8 Receptance Coupling of End Mills to Spindle-Tool Holder Assembly
3.8.1 Experimental Procedure
3.9 Problems
CHAPTER FOUR MACHINE TOOL VIBRATIONS
4.1 Introduction
4.2 Stability of Regenerative Chatter Vibrations in Orthogonal Cutting
4.2.1 Stability of Orthogonal Cutting
4.2.2 Dimensionless Analysis of Stability Lobes in Orthogonal Cutting
4.2.3 Chatter Stability of Orthogonal Cutting with Process Damping
4.3 Chatter Stability of Turning Operations
4.4 Chatter Stability of Turning Systems with Process Damping
4.4.1 Metal Cutting Forces
4.4.2 Process Damping Gains Contributed by Flank Wear
4.4.3 Stability Analysis
4.5 Experimental Validation
4.6 Analytical Prediction of Chatter Vibrations in Milling
4.6.1 Dynamic Milling Model
4.6.2 Zero-Order Solution of Chatter Stability in Milling
4.6.3 Multi-Frequency Solution of Chatter Stability in Milling
4.7 Chatter Stability of Drilling Operations
4.7.1 Dynamic Drilling Force Model
4.8 Frequency Domain Solution of Drilling Stability
4.9 Semidiscrete Time Domain Solution of Chatter Stability
4.9.1 Orthogonal Cutting
4.9.2 Discrete Time Domain Stability Solution in Milling
4.10 Problems
CHAPTER FIVE TECHNOLOGY OF MANUFACTURING AUTOMATION
5.1 Introduction
5.2 Computer Numerically Controlled Unit
5.2.1 Organization of a CNC Unit
5.2.2 CNC Executive
5.2.3 CNC Machine Tool Axis Conventions
5.2.4 NC Part Program Structure
5.2.5 Main Preparatory Functions
5.3 Computer-Assisted NC Part Programming
5.3.1 Basics of Analytical Geometry
5.3.2 APT Part Programming Language
5.4 Trajectory Generation for Computer-Controlled Machines
5.4.1 Interpolation with Constant Displacement
5.4.2 Acceleration-Limited Velocity Profile Generation with Constant Interpolation Period
5.4.3 Jerk-Limited Velocity Profile Generation
5.5 Real-Time Interpolation Methods
5.5.1 Linear Interpolation Algorithm
5.5.2 Circular Interpolation Algorithm
5.5.3 Quintic Spline Interpolation within CNC Systems
5.6 Problems
CHAPTER SIX DESIGN AND ANALYSIS OF CNC SYSTEMS
6.1 Introduction
6.2 Machine Tool Drives
6.2.1 Mechanical Components and Torque Requirements
6.2.2 Feedback Devices
6.2.3 Electrical Drives
6.2.4 Permanent Magnet Armature-Controlled dc Motors
6.2.5 Position Control Loop
6.3 Transfer Function of the Position Loop
6.4 State Space Model of Feed Drive Control Systems
6.5 Sliding Mode Controller
6.6 Active Damping of Feed Drives
6.7 Design of an Electrohydraulic CNC Press Brake
6.7.1 Hydraulic Press Brake System
6.7.2 Dynamic Model of Hydraulic Actuator Module
6.7.3 Identification of Electrohydraulic Drive Dynamics for Computer Control
6.7.4 Digital Position Control System Design
6.8 Problems
CHAPTER SEVEN SENSOR-ASSISTED MACHINING
7.1 Introduction
7.2 Intelligent Machining Module
7.2.1 Hardware Architecture
7.2.2 Software Architecture
7.2.3 Intelligent Machining Application
7.3 Adaptive Control of Peak Forces in Milling
7.3.1 Introduction
7.3.2 Discrete Transfer Function of the Milling Process System
7.3.3 Pole-Placement Control Algorithm
7.3.4 Adaptive Generalized Predictive Control of Milling Process
7.3.5 In-Process Detection of Tool Breakage
7.3.6 Chatter Detection and Suppression
7.4 Intelligent Pocketing with the IMM System
7.5 Problems
APPENDIX A LAPLACE AND z TRANSFORMS
PPENDIX B OFF-LINE AND ON-LINE PARAMETER ESTIMATION WITH LEAST SQUARES
BIBLIOGRAPHY
INDEX