Machine Tools Design And Numerical Control

✍ Scribed by Mehta

• Publisher: MC GRAW HILL INDIA
• Year: 2013
• Tongue: English
• Leaves: 560
• Edition: 3
• Category: Library

✦ Table of Contents

Title
Contents
1. INTRODUCTION TO MACHINE TOOL DRIVES AND MECHANISMS—GENERAL PRINCIPLES OF MACHINE TOOL DESIGN
1.1 Working and Auxiliary Motions in Machine Tools
1.3 Machine Tool Drives
1.4 Hydraulic Transmission and Its Elements
1.5 Mechanical Transmission and Its Elements
1.6 Technico-economical Prerequisites for Undertaking the Design of a New Machine Tool
1.7 General Requirements of Machine Tool Design
1.8 Engineering Design Process Applied to Machine Tools
1.9 Layout of Machine Tool
Review Questions
References
2. REGULATION OF SPEED AND FEED RATES
2.1 Aim of Speed and Feed Rate Regulation
2.2 Stepped Regulation of Speed: Design of Speed Box
2.3 Design of Feed Box
2.4 Machine Tool Drives Using Multiple-speed Motors
2.5 Special Cases of Gear Box Design
2.6 General Recommendaitions for Developing the Gearing Diagram
2.7 Determining the Number of Teeth of Gears
2.9 Stepless Regulation of Speed and Feed Rates
2.10 Kinematics of Machine Tools
Review Questions
References
3. DESIGN OF MACHINE TOOL STRUCTURES
3.1 Functions of Machine Tool Structures and their Requirements
3.2 Design Criteria for Machine Tool Structures
3.3 Materials of Machine Tool Structures
3.4 Static and Dynamic Stiffness
3.6 Basic Design Procedure of Machine Tool Structures
3.7 Design of Beds
3.8 Design of Columns
3.9 Design of Housings
3.10 Design of Bases and Tables
3.11 Design of Cross Rails, Arms, Saddles and Carriages
3.12 Design of Rams
3.13 Model Technique in Design of Machine Tool Structures
Review Questions
References
4. DESIGN OF GUIDEWAYS AND POWER SCREWS
4.1 Functions and Types of Guideways
4.2 Design of Slideways
4.3 Design Criteria and Calculations for Slideways
4.4 Guideways Operating under Liquid Friction Conditions
4.5 Design of Aerostatic Slideways
4.6 Design of Anti-friction Guideways
4.7 Combination Guideways
4.8 Protecting Devices for Slideways
4.9 Design of Power Screws
Review Questions
References
5. DESIGN OF SPINDLES AND SPINDLE SUPPORTS
5.1 Functions of Spindle Unit and Requirements
5.2 Materials of Spindles
5.3 Effect of Machine Tool Compliance on Machining Accuracy
5.4 Design Calculations of Spindles
5.5 Anti-friction Bearings
5.6 Sliding Bearings
Review Questions
References
6. DYNAMICS OF MACHINE TOOLS
6.1 Machine Tool Elastic System-cutting Process Closed-loop System
6.2 General Procedure for Assessing Dynamic Stability of Ees—Cutting Process Closed-Loop System
6.3 Dynamic Characteristics of Elements and Systems
6.4 Dynamic Characteristic of the Equivalent Elastic System
6.5 Dynamic Characteristic of the Cutting Process
6.6 Stability Analysis
6.7 Forced Vibrations of Machine Tools
Review Questions
References
7. CONTROL SYSTEMS IN MACHINE TOOLS
7.2 Control Systems for Changing Speeds and Feeds
7.3 Control Systems for Executing Forming and Auxiliary Motions
7.4 Manual Control Systems
7.5 Automatic Control Systems
7.6 Adaptive Control Systems
References
8. NUMERICAL CONTROL OF MACHINE TOOLS
8.2 Manual Part Programming
8.3 Computer Aided Part Programming
Review Questions
References
9. EXTENSIONS OF NUMERICAL CONTROL— CNC, DNC, MACHINING CENTRES
9.1 Distributive Numerical Control (DNC-1)
9.2 Computer Numerical Control (CNC)
9.3 Machining Centres
9.4 Direct Numerical Control (DNC-2)
9.5 CNC Programming
Review Questions
Index