The question is quite broad, as there
are different methods for setting various types of gears and complexity of
gear assemblies, but all gears have a few things in common.
Helical gear teeth are affected by cratering wear — particularly in the regions of low oil film thicknesses,
high flank pressures and high sliding speeds. The greatest wear occurs on the pinion — in the area of
negative specific sliding. Here the tooth tip radius of the driven gear makes contact with the flank of the
driving gear with maximum sliding speed and pressure.
One process for hard finishing gears is generating gear grinding. Due to its high process efficiency, generating gear grinding has replaced other grinding processes such as profile grinding in batch production of small- and middle-sized gears. Yet despite the wide industrial application of generating gear grinding, the process design is based on experience along with time- and cost-intensive trials. The science-based analysis of generating gear grinding demands a high amount of time and effort, and only a few published scientific analyses exist. In this report a thermo-mechanical process model that describes influences on the surface zone in generating gear grinding is introduced.
In this special section, our editors have gathered recent news and information related to the heat treatment of gears. Here you’ll find a comprehensive assortment of news and upcoming events that will help you understand the various heat treatment processes available for gears and choose the best option for your projects, whether you heat treat in-house or send your gears to a commercial heat treating provider.
The process of forging metal into shapes possesses
a surprisingly long and storied history.
For example, the method of hot rolling can trace its protracted existence all the way back to an enigmatic Italian polymath named Leonardo da Vinci (you may have heard of him), who reportedly invented the rolling mill one lazy day in the 1400s.
Bill Walton – a 7 foot tall anomaly
from the annals of basketball history
who wears tie-dye shirts, listens to the
Grateful Dead and, according to his
own outlandish proclamations, hasn’t
taken an indoor shower in 35 years – is
well-known for looking at average accomplishmentsand being overcome
with extreme fits of emotion.
PUBLISHER'S PAGE | 2015-02-01 | From Power Transmission Engineering
Engineers are often challenged with the seemingly
impossible task of doing more with less.
Customers want more power transmitted in a smaller space,
they want more efficient designs, and, of course, they want to
spend less money. So engineers are always looking for ways
to squeeze the most out of their mechanical systems. They’re
constantly working to maximize power density, increase
energy efficiency and reduce costs to meet their customers’
needs.
The name Gleason is practically synonymous with gear manufacturing. Since the company was founded in 1865, the technology of gear manufacturing has
been its focus, its core and its competitive advantage.
Gears with a diametral pitch 20 and
greater, or a module 1.25 millimeters
and lower, are called fine-pitch or low-module gears. The design of these gears has its own specifics.
