9780130488671

This superbly detailed and illustrated text clearly defines, explains and illustrates the basics of CNC machining centers and CNC turning machines. For each CNC machine type, it sufficiently identifies, outlines and explains all the important fundamentals. It provides hands-on experience with a straightforward step-by-step methodology that is easy to understand and illustrates the main components and characteristics that are associated with each CNC machine type.The volume provides a thorough introduction to CNC machining centers, tool diameter compensation, drilling canned cycles, cycles G84, G86, and G76, an introduction to CNC turning, CNC lathe fundamentals, tool nose radius compensation and multiple appendices for quick reference.For CNC Programmers, CNC lead persons, Setup operators, manufacturing engineers and supervisors.

Introduction to CNC Machining Centers
CNC Machine Fundamentals
CNC Machining Center Cutting Fundamentals
CNC Machining Center Control and Operation
CNC Machining Center Technical Data
CNC Machining Center Rapid and Feed Moves
CNC Machining Center Circular Interpolation
CNC Cutter Diameter Compensation
CNC Drilling Canned Cycles
CNC Canned Cycles G84, G86, and G76
Introduction to CNC Turning
CNC Lathe Fundamentals
CNC Lathe Cutting Fundamentals
CNC Lathe Control and Operation
CNC Lathe Technical Data
CNC Lathe Rapid and Feed Moves
CNC Lathe Circular Interpolation
Tool Nose Radius Compensation
CNC Lathe Fixed Cycles G70 to G74
CNC Lathe Fixed Cycles G75 to G94
CNC Tool Library Example
Formulas for Machining Centers
Milling Cutting Speed (SFM)
Drilling, Reaming and Tapping Cutting Speed (SFM) (HSS Tools)
Milling Feeds (FPT)
Drilling Feedrates (IPR) (HSS Drills)
Carbide Insert Drilling Cutting Speeds (SFM) and Feedrates (IPR)
Tap Drill Size Chart (Inch and Metric)

NPT Pipe Tap Drill Size Chart
Machining Center Program Code Descriptions
CNC Lathe Tool Library Example
Formulas for Turning
Lathe Cutting Speeds (SFM) and Feedrates (IPR) for Turning and Boring Operations

60deg; V-Thread Cutting Speeds (SFM) and Formulas
Lathe Program Code Descriptions
Right Triangle Formulas
Fraction and Decimal Conversion Chart
Letter and Number Drill Size Conversion Chart
Metric Conversion
Glossary
Index
Table of Contents provided by Publisher. All Rights Reserved.

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This textbook was developed to introduce the student to the basics of CNC technology, and to prepare him or her for future CNC machining and programming courses that may follow. Included is related tooling data, machining data, shop mathematics, and CNC machine and control information. Computer Numerical Controlclearly distinguishes between CNC machining centers and CNC lathes and will prepare students exceptionally well for CNC machining in each respective area. First and foremost, this textbook is intended for students with diverse backgrounds. This includes students just out of high school, or students who may have had some training in industry or in the military. These students may just be beginning alternative or second careers. Other students may already be regular employees or trainees in industry. They may need to learn CNC machining in order to improve their skills as a programmer-operator. They all need a timely but meaningful introduction to CNC. Although there is no prerequisite to this book, it is always helpful to have some minimal exposure to CNC machine tools in the workplace. This book was written because existing books either assume that the reader has extensive knowledge of CNC or are too specialized for a complete understanding of CNC technology. Other books tend to use examples that put too much emphasis on a specific machine, or may concentrate on one part of CNC, such as machine control or programming. These books may be too theoretical or verbose, may include material that is not work oriented, or may not fully provide students a hands-on experience with the knowledge and skills they need to get started on the job. The pedagogical approach in this book is to stress hands-on application over theoretical material. It applies a step-by-step method that is straightforward, usable, and easy to understand. Because numerous machine tool brands exist, it presents generic examples and illustrations of their common characteristics, including CNC setup, operation, tooling, program structure, and machining. After introducing each of these areas, the book shows how they are intertwined in typical CNC machining centers and CNC lathes. These generic examples give students to-the-point coverage of what they need to know (without material that is just nice to know) to get up and running on the job--efficiently, productively, and safely. Several chapters include CNC program samples that the student will learn to read block by block. The program examples progress in a spiral fashion. This gives students a good understanding of the unit just completed, making the next unit easier to undertake. Some students may have had courses in mathematics (including trigonometry), blueprint reading, and metrology, as well as other machining-related courses, while others may need a review of these materials. Therefore, these topics coupled with data from the appendixes will be brought into the coverage as needed. This textbook, then, provides a learning tool that can be used in both educational and in-plant training environments. In education, it will certainly help students develop a better understanding of all the components that make up CNC machining technology. Whenever possible, it is recommended that a CNC laboratory component be included with this course. This will give the student a greater understanding of the material covered in the textbook. This text material and the methodology have been class tested at Milwaukee Area Technical College (MATC) in the CNC machine-related programs. Feedback was obtained from students, teachers, and employers who subsequently employ these students. After reading this book students, regardless of their background and institutional affiliation, will have a fundamental understanding of CNC technology, CNC terminology, and CNC machine and control operations, and will be able to decipher CNC programs. Distinguishing Features An initial and overall emphasis is placed on safety. Each unit begins with objectives that clearly identify the unit expectations. Useful and effective illustrations visually support the explanations and program samples. Students are not directed to create CNC programs, but rather to understand the format and concepts of CNC programs. A focus is placed on G codes, M codes, and the various other letter address codes. This also will prepare students who will study CAM system courses because CNC downloads are typically in those formats. A focus is placed on operational-type codes such as tool changing, offsets, spindle speed, coolant, and program stops. Summary learning tables and charts are included for easy reference. CNC machine types and components are clearly described and illustrated. CNC toolholders and cutting tools are clearly described and illustrated. CNC workholding devices and setup methods are clearly described and illustrated. CNC control features and operations are clearly described and illustrated. Related technical data such as shop mathematics, feedrate, spindle speed, surface finish, material types, cutter inserts, and geometric dimensioning and tolerancing are linked to the overall CNC process. The appendixes and glossary contain valuable and pertinent CNC and machining-related information.

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Computer Numerical Control Machining and Turning Centers

Computer Numerical Control Machining and Turning Centers

0130488674

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