GEARS for Mechanical Engineering.pdf

GEAROLOGY

TABLE of CONTENTS

Chapter 1

Introduction to Power Motion Products . . . . . 1-1

Chapter 2

Spur Gears . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Chapter 3

Helical Gears . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Chapter 4

Worm and Worm Gears . . . . . . . . . . . . . . . . . . 4-1

Chapter 5

Bevel and Miter Gears . . . . . . . . . . . . . . . . . . . 5-1

Chapter 6

700 Series Worm Gear Speed Reducers . . . . . 6-1

Chapter 7

800 Series Helical Speed Reducers . . . . . . . . . 7-1

Chapter 8

Introduction to Ratiotrol . . . . . . . . . . . . . . . . . 8-1

Chapter 9

AC Inverters . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Chapter 10

Centric Overload Release Clutches . . . . . . . . 10-1

1-1

GEAROLOGY

INTRODUCTION

to POWER MOTION

PRODUCTS

1-2

GEAROLOGY

The Boston Gear Story

Established in Charlestown, Massachusetts Boston Gear was

founded by none other than the man who invented the

calculator - George Grant. Grant headed the business from

1877 to 1891, when it was sold to Frank Burgess, a

businessman with one overriding goal: to provide accuracy,

economy, and despatch, or, in today’s marketing vernacular,

quality, price, and service - and indeed, those are the

hallmarks upon which Boston Gear was built.

Since then, the Boston Gear story has been measured in one

milestone after another, including:

• our inaugural product catalog in 1892;

• the first catalog to include complementary parts, such as

pulleys, u-joints, sprockets, and shafts was printed in 1899;

• our special “horseless carriage catalog” published in 1900

for that newfangled invention - the car

• the Thanksgiving Eve, 1909, Boston Gear Works fire in

Quincy, Massachusetts, in which everything was destroyed;

• the company’s reopening just months later in February 1910;

• the early-1960s development of a line of electrical motion

control devices, which has since been expanded into a

comprehensive selection of AC and DC motor controllers,

motors and other accessories;

• the advent of fluid power products, bringing the total

number of products available through Boston Gear to

over 30,000;

• the 1968 introduction of the modular worm gear speed

reducer - a first in the industry, and a product that provides

a long life of smooth, efficient, trouble-free performance;

• the establishment of the Louisburg, NC, speed reducer

manufacturing facility in the 1970s;

• the 1975 venture into on-line communication with

distribution, which resulted in over 14,000 miles of leased

telephone lines during the two subsequent years alone;

• the company’s move to Quincy, MA, in 1977;

• completion of the state-of-the-art Florence, KY, National

Distribution Center in 1980;

• the 1983 introduction of the in-line helical and right

angle helical/bevel gear speed reducers;

• the acquisition of Ferguson Gear in 1989, at which time Boston

Gear transferred the machinery for the manufacture of open

gearing and coupling products to Ferguson’s Charlotte, North

Carolina, location;

• our 1996 acquisition by the Colfax Corporation;

• and our 2000 merger with Warner Electric

1-3

GEAROLOGY

W elcome to Power Transmission 101 (also known as Gearology) –

a course designed to teach you everything you need to know

about the Boston Gear family of power transmission drives.

Why a comprehensive course about power transmission?

For two very good reasons: First, the more you know about

power transmission, the more you’ll be able to help your customers

select the right products for their applications. Second, there's

a potential sale to be made every place a shaft turns! And in

American industry, that means virtually everywhere – from

a giant automobile manufacturing plant in the Midwest to a

small mom-and-pop bakery on the Rhode Island shore.

Boston Gear’s Power Transmission 101 course won't make you a

mechanical engineer. It will, however, provide you with the basic

knowledge and confidence to solve most of your customers’ and

prospects’ power transmission needs – and problems. As a result,

you will be “adding value” for your customers and setting the

stage to increase your sales. And that’s a win-win for everyone.

On that note, let’s get familiar with some of the basics of power

transmission – keeping in mind that you should have a complete

set of Boston Gear catalogs nearby for quick reference.

There are a number of variables to consider when selecting

a power transmission drive for a given application. The most

important of these variables are:

• Horsepower or torque to be transmitted

• Required speeds (revolutions per minute, rpm)

• Duty cycle

As a first step in the power transmission drive train selection

process, you must determine what these variables are by

conferring with your customer or prospect.

Boston Gear makes many types of gears for use in open and

enclosed gear drives, each of which will be discussed in greater

detail in subsequent chapters. To help prepare you for these

lessons, it is important that you become familiar with the

terminology used in the power transmission industry (and

included in the Glossary Sections at the end of certain chapters.

Don’t be concerned if you don’t become instantly fluent in

the language of Gearology. By the time you complete Power

Transmission 101 , you’ll be speaking like a real “pro.”

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: