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Computer numerical control of machine tools

Author: G E Thyer
Publisher: [Oxford] : Newnes, 1991.
Edition/Format:   eBook : Document : English : Second editionView all editions and formats
Database:WorldCat
Summary:
This is a comprehensive textbook catering for BTEC students at NIII and Higher National levels, advanced City and Guilds courses, and the early years of degree courses. It is also ideal for use in industrial retraining and post-experience programmes.
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Genre/Form: Electronic books
Additional Physical Format: Print version:
Thyer, G.E.
Computer numerical control of machine tools
(OCoLC)24697994
Material Type: Document, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: G E Thyer
ISBN: 9781483294612 1483294617 9781322480626 1322480621
OCLC Number: 896722911
Notes: Includes index.
Description: 1 online resource (256 pages)
Contents: Front Cover; Computer Numerical Control of Machine Tools; Copyright Page; Table of Contents; 11.7 Example program 2; Preface; Preface to the first edition; Acknowledgement; Chapter 1. Principles of machine tools; 1.1 Material cutting techniques; 1.2 Material removal techniques onmachine tools; 1.3 Function of machine tools; 1.4 Size and form; 1.5 Kinematic principles of operation of machine tools; 1.6 Surface texture; Chapter 2. Control of machine tools; 2.1 Levels of control; 2.2 Zero level of control; 2.3 First level of control; 2.4 Second level of control; 2.5 Third level of control. 2.6 Fourth level of control2.7 Fifth level of control: numericalcontrol; 2.8 Computer numerical control; 2.9 Direct numerical control (DNC); 2.10 Adaptive control; 2.11 Applications of numerically controlled machines; 2.12 Cost of manufacture; 2.13 Break-even charts; Chapter 3. Construction of machine tools; 3.1 Constructional features; 3.2 Power units; 3.3 Providing the cutting speed; 3.4 Power units for moving the carriages holding tool or work; 3.5 Power units for ancillary services; 3.6 Speed control units; 3.7 Control of feed rates; 3.8 Control of translational (linear) movements. 3.9 Control of rotational movements3.10 Actuating mechanisms; 3.11 Tool holders; 3.12 Tool changing arrangements; 3.13 Work holders; 3.14 Linking structure; 3.15 Overall considerations; Chapter 4. Modes of operation; 4.1 Designation of axes on NC machinetools; 4.2 Linear and rotary motions; 4.3 Machine operating systems; 4.4 Positioning control (symbol P); 4.5 Line motion control (symbol L); 4.6 Contouring control (symbol C); 4.7 Selection of control mode; 4.8 Adaptive control; Chapter 5. Output transducers; 5.1 Transducers; 5.2 Positional transducers; 5.3 Optical gratings; 5.4 Encoders. 5.5 Inductosyns5.6 Magnescales; Chapter 6. Principles of operation of NC machine tools; 6.1 Basic principles; 6.2 Closed loop systems; 6.3 Open loop systems; 6.4 Input signals; Chapter 7. Information storage; 7.1 Input signals; 7.2 Indirect methods of input; 7.3 Punched cards; 7.4 Magnetic tape; 7.5 Magnetic discs; 7.6 Punched tape; 7.7 Block formats; Chapter 8. Structure of part programs; 8.1 Part programs; 8.2 Types of control information; 8.3 Word addressed format; 8.4 Optional block skip character (/); 8.5 Sequence or block number (N); 8.6 Preparatory function (G). 8.7 Dimensional information words (X, Y, Zetc.)8.8 Decimal point; 8.9 Feed rate (F); 8.10 Spindle speed (S); 8.11 Tool number (T); 8.12 Miscellaneous function (M); 8.13 End of block (EOB); 8.14 Heidenhain plain-language programming; 8.15 Word addressed programming of plotters; Chapter 9. Writin art ro rams; 9.1 Creating part programs; 9.2 What the programmer has to know; 9.3 Drawings for numerically controlled machines; 9.4 The component; 9.5 Work holding positions; 9.6 The machine tool; 9.7 The control system; 9.8 Circular interpolation; 9.9 Parabolic interpolation; 9.10 Polar coordinates.
Responsibility: G.E. Thyer.

Abstract:

Based on notes for lectures given to students ranging from 6th-form pupils to honours degree students, this book looks at computer numerical control from the viewpoint of the machine tool user rather  Read more...

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'This is a fine publication covering most areas of CNC and CAE work for the GNVQ course.' Calvin Williams, Gorseinon College, Swansea

 
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