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# Engineering Formulas for Metalcutting

Presented in Customary U.S. and Metric Units

## Engineering Formulas for Metalcutting

#### Edmund Isakov

Overview

A unique and handy resource, Engineering Formulas for Metalcutting will enable users to calculate necessary speeds, feeds, and required machining power in order to maximize the productivity of cutting. Providing information on formulas and their applications in a concise and clearly arranged format, it describes mechanical properties of the most popular work materials, such as steels, cast irons, and nonferrous alloys. And it offers numerous formulas for calculating speeds, feeds, cutting forces, and machining power. What's more, practical examples of calculating the variety of such cutting parameters will make this a valuable source of knowledge in training and practice.

Features

• Linear regression equations for converting Rockwell, Vickers, Knoop, and Scleroscope hardness numbers into Brinell hardness numbers.
• Formulas and linear regression equations for calculating ultimate tensile strength of the most commonly used work materials in relationship with their hardness.
• Formulas for calculating the number of inserts simultaneously engaged with the workpiece depending on milling conditions.
• Formulas to calculate machining time when facing, cutoff, and deep grooving and for feed and radial forces in relationship with tangential force.
• Set of formulas to calculate overhang of boring bars made of tungsten heavy alloys and cemented carbides in comparison with a boring bar made of steel.
• Formulas for metal removal rate and for calculating tangential and axial forces.
• Establishes power constant values for most commonly used work materials.

Dr. Edmund Isakov. Ph.D., has enjoyed a long and distinguished career in metalworking. He earned his Doctor of Philosophy degree in Mechanical Engineering at the V. Bakul Institute for Superhard Materials (Kiev, Ukraine). He is known for his work in research, development and applications of cuttting tools for milling, turning and boring. Dr. Isakov has authored Mechanical Properties of Work Materials and numerous articles and papers on metalcutting. He holds several U.S. patents and numerous U.S.S.R Inventor's Certificates pertaining to carbide and diamond tools. during nearly two decades at Kennametal, Inc., he became a noted authority on the technical analysis of cutting tools. Dr. Isakov is now an independent consulant and manufacturing sciences writer based in Florida. He is a senior member of SME
.

## Contents

Chapter 1: Mechanical Properties of Work Materials

• Hardness
• Hardness-to-Hardness Conversion
• Strength-Hardness Relationship of Work Materials
• Concluding Remarks on Mechanical Properties of Work Materials

Chapter 2: Milling

• Kinematics and Productivity
• Dynamics
• Concluding Remarks on Milling

Chapter 3: Turning

• Insert Identification Systems
• Kinematics and Productivity
• Dynamics
• Concluding Remarks on Turning

Chapter 4: Boring:

• Dynamics
• Boring Bar Deflection
• Concluding Remarks on Boring

Chapter 5: Drilling

• Indexable Insert Drills
• Kinematics and Productivity
• Dynamics
• Concluding Remarks on Drilling

Afterword
References
Index