Workholder devices : design and calculations / Vukota Boljanovic.

Format:

Book

Author/Creator:

Boljanovic, Vukota, author.

Language:

English

Subjects (All):

Industrial engineering.

Physical Description:

1 online resource (386 pages)

Edition:

First edition.

Place of Publication:

South Norwalk, Connecticut : Industrial Press, Inc., [2025]

Summary:

This comprehensive guide by Vukota Boljanovic focuses on the design and calculations of workholder devices, which are essential tools in manufacturing and industrial processes. The book covers various topics, including the fundamentals of workholder design, economic approaches, productivity enhancement, and the selection of appropriate workholders for different machines. It delves into the principles of supporting, locating, and clamping workpieces, as well as the accuracy of workholders. Special emphasis is placed on jigs and fixtures, two critical groups of workholders in modern processing systems. The book is intended for engineers, designers, and other professionals involved in manufacturing, offering practical insights and theoretical knowledge to enhance productivity and innovation in industrial settings. Generated by AI.

Contents:

Cover (Workholder Devices: Design and Calculations)

Front Matter

Title Page

Copyright

Dedication

Contents

Preface

Acknowledgments

About The Author

Chapter 1

Introduction to Workholders

Definition of Terms

Workholders

Jigs

Fixtures

Tool or Tooling

Classification of Workholders

General-Purpose Workholders

Special Workholders

Permanent Workholders

Temporary Workholders

Modular Workholders

The Economic Approach to the Provision of Workholders

How to Make Workholders More Productive

Operation Considerations

Planning the Workholders

Selecting Workholders for Simple Machines

Selecting Workholders for Complex Machines

The Future of Workholding

Review Questions

Chapter 2

Design of Workholders

Workholder Design Fundamentals

Design Process

Defining Requirements

Gathering and Analyzing Information

Workpiece Consideration

Manufacturing Operation Consideration

Equipment Consideration

Personal Consideration

Basic Principles of Design Workholders

Developing Several Options

Choosing the Best Option

Implementing the Design

Creating Final Drawings

Creating a Bill of Materials

Verification of Workholder Design

Workholder Materials

Properties of Workholder Materials

Hardness

Toughness

Wear Resistance

Machinability

Brittleness

Tensile Strength

Shear Strength

Ferrous Workholder Materials

Nonferrous Workholder Materials

Main alloying element (first digit)

Special alloying conditions (second digit)

Serialization and individual alloy identification (third and fourth digits)

Nonmetallic Workholder Materials

Chapter 3

Supporting and Locating Principles

Locating-Principles and Methods

Basic Locating Principles

Positioning the Locators.

Accuracy and Tolerances

Duplicate Locators

Foolproofing

Motion Economy

Scheme for Determining the Location of the Workpiece in the Workholders

Determining the Location of the Workpiece by Three Flat Surfaces

Determining the Location of the Workpiece by Two Flat Surfaces and One Hole

Determining the Location of the Workpiece by Two Flat Surfaces and One Cylindrical Surface

Determining the Location of the Workpiece by a Flat Surface and Two Holes

Complete and Partial Determination of the Workpiece Location

Locating Elements

Elements for Locating from Machined Surfaces

Locating Buttons

Locating Pins

Locating Pads

Elements for Locating from Unmachined Surfaces

Adjustable Locators

Spring-Type Jack Pin Locators

Elements for Locating from Outside Surfaces

Locating Prisms

V-locators

Nesting (Cavity) Locators

Bushing Locators

Elements for Locating from Internal Surfaces

Locating Pins and Locating Plugs

Conical Locators

Diamond Locating Pins

Mandrel Locators

Chapter 4

Clamping Devices and Clamping Forces Calculation

Principles of Clamping

Positioning the Clamps

Strength of the Clamps

Productivity of the Clamping System

Operator Fatigue

Clamping Methods and Types of Clamps

Screw Clamps

Strap Clamps

Bridge Clamps

Heel Clamps

Edge Clamps

Edge Strap Clamp

Edge Jaw Clamp

Pivoting Clamps

Pivoted Edge Clamp

Pivoted Two-Way Clamp

Pivoted Strap Clamp

Hinged Clamps

Hinged Swinging Bolt Clamp

Hinged Clamped Bolt Clamp

Hinged Two-Way Clamp

Hinged Clamp with Hook Cam

Quick-Acting Clamps

Toggle Clamps

Cam-Action Clamps

Quick-Turn Screws

Quick-Acting Knobs

Power Clamps

Pneumatic Clamping Devices

Hydraulic Clamping Devices

Pneumo-Hydraulic Clamping Devices

Vacuum Clamping.

Magnetic Clamping

Centric Clamping Devices

Universal Chucks

Collet Chucks

Miscellaneous Types of Clamps and Clamping

Double Clamping

Equalizer

Universal Strap Clamps

Mold Clamps

Compact Milling Clamps

Low-Height Pinch Clamps

Wedge Clamps

Clamping Using Disk Springs

Clamping Force Calculation

Clamping Force with Lever Clamping Devices

Clamping Force with Cam Devices

Disk Cam

Spiral Cam Devices

Clamping Force with Wedge Clamping Devices

Clamping Force with Centric Clamping Devices

Clamping Force with Disk Springs

Clamping Force with Fluid-Powered Devices

Pneumatic Cylinder

Clamping Force with Pneumatic Chamber with Diaphragm

Clamping Force with Hydraulic Devices

Clamping Force with Pneumo-Hydraulic Devices

Clamping Force with Magnetic Devices

Chapter 5

Types of Workholders

Basic Workholder Components

Workholder Bodies

Locators

Supports

Clamps

Elements of Workholders for Setting Workpieces and Cutting Tools Into Working Position

Elements for Bringing Tools into the Working Position

Elements for Guiding Tools When Machining Holes

Fixed Bushing

Liner Bushings

Renewal Bushings

Slip-in Bushings

Types of Jigs

Drill Jigs

Template Jigs

Plate Jigs

Box Jigs

Swinging Leaf Jigs

Channel Jigs

Sandwich Jigs

Angle-Plate Jigs

Indexing Jigs

Multistation Jigs

Group Drilling Jigs

Types of Fixtures

Turning Fixtures

Turning Fixture with a Collet Chuck

Turning Fixture with Centering Pins

Turning Fixtures with Disk Springs

Turning Fixture for Piston Pinhole Machining

Milling Fixtures

Single-Piece Milling Fixtures

Adjustable Milling Fixtures

Double-String Milling Fixtures

String Milling Fixtures

Fork Milling Fixtures.

Side Milling Fixtures

Face Milling Fixtures

Broaching Fixtures

Internal Broaching Fixtures

Fixture for Broaching Groove at an Angle

External Broaching Fixtures

Boring Fixtures

Indexing Fixtures

Duplex Fixtures

Grinding Fixtures

Fixtures for External Grinding

Fixtures for Internal Grinding

Fixtures for Grinding of Complex Surfaces

Group and Modular Workholders

Group Workholders

Areas of Application of Modular Workholders

Advantages and Disadvantages of Modular Workholders

Parts of Modular Workholders

Chapter 6

Calculation of Workholder Accuracy

Statistical Error

Locating Error (Δloc)

Locating Error When Supporting the Workpiece on Flat Surfaces

Locating Error When Supporting the Workpiece on Outer Cylindrical Surfaces

Locating Error When Supporting the Workpiece on the Holes

Locating Error When Supporting the Workpiece on a Flat Surface and Two Holes

Locating Error When Clamping the Workpiece in the Collet Chuck

Clamping Error (Δc)

Error in Setting the Workholder on the Machine Table (Δn)

Error Due to Inaccurate Manufacturing and Assembly of Workholder Elements (Δw)

Error Due to Use of the Bushings to Guide the Cutting Tools (Δk)

Holes Distance Error

Machine Geometric Accuracy Error (Δm)

Dynamic Error

Chapter 7

Jigs and Fixtures Design for Joining

Fundamentals of Welding

Types of Welding Processes

Fusion Welding

Solid-State Welding

Common Terms and Types of Joints and Welds

Common Terms

Types of Joints and Welds

Power Density and Heat Balance in Fusion Welding

Distortion in Welding

Types of Welding Distortion

Cases of Distortion

How to Control Welding Distortion

Design of Welding Jigs and Fixtures

Welding Fixture Fundamentals.

Hold the Workpiece in the Most Convenient Position for Welding

Provide Proper Heat Control of the Weld Zone

Provide Suitable Clamping to Reduce Distortion

Provide Clearance for Filler Metal

Other Factors

What Questions Designers Need to Ask Before Beginning Jig or Weld Fixture Design

Gas Welding Fixtures

Gas Welding Fixture Materials

Arc Welding Fixtures

Backing Bars

Resistance Welding Fixtures

Laser Welding Fixtures

Tooling for Brazing and Soldering

Brazing Processes

Torch Brazing

Furnace Brazing

Dip Brazing

Resistance Brazing

Induction Brazing

Soldering Processes

Soft Soldering

Silver Soldering

Brazing and Soldering Fixtures Design

Selection of Fixture Materials

Appendix A

Metric System Tolerances on Linear Dimensions

Definitions

System of Limits and Fits

System of Geometric Tolerances

Appendix B

International System of Units

SI Base Units

SI Derived Units

SI Prefixes

Units Outside the SI

Metric Style and Conversions

Capitals

Plurals

Spacing

Period

Decimal Point

Conversions

Appendix C

Technical Specification of Helical and Belleville Springs

Helical Springs

Belleville Springs

Appendix D

Conversion Tables

Glossary

References and Bibliography

Index

Back Cover.

Notes:

Description based on publisher supplied metadata and other sources.

Part of the metadata in this record was created by AI, based on the text of the resource.

Description based on print version record.

Includes bibliographical references and index.

ISBN:

0-8311-9659-9