Next Generation Gear Grinding
What do the gears that end up in trains, wind generators, speed reducers, marine transmissions, off-road equipment, and printing presses have in common? They...
Static and Fatigue Calculations of Wind Turbine Gearboxes: Part I
1 Abstract
Wind turbine manufacturers have a vital interest in carrying out gearbox calculations on their own, and for multiple reasons:
• Influence on the design...
Supplier Relationships Speed Gearbox Delivery
At Stober Drives, customer orders are filled in the fast lane. The company turns around more than 93 percent of requests for its MGS™...
Stress in Diamond-Coated Cutting Tools
Diamond coatings have been increasingly used in cutting-tool applications. Coating delamination is the major tool failure mode and occurs due to deposition-induced residual stresses...
Measuring Excellence in Polymer Gearing
At Kleiss we refer to polymer gear making as a “subtle science and exacting art,” and 20 years of experience has shown that a...
Reducing Gear Whine in Planetary Gear Transmissions
Gear whine is an annoyance for automotive consumers. For all practical purposes it cannot be eliminated, but only minimized. Gear whine stems from transmission...
Selecting the Right PFPE Lubricant
If a mechanical or electromechanical component has to function for extended periods in an extreme environment, a perfluoropolyether (PFPE) lubricant just may be the...
The Rules for Successful Rotary Broaching
The process of rotary broaching has been around for a long time, but there are still many machinists in the field who have never...
Case Study: Allison Transmission Test Drives Gleason Genesis
Somewhere in Europe a driver is enjoying his new Renault refrigerated truck, and the particularly quiet, smooth–shifting automatic transmission running beneath him. Little does...
Microgeometry and Bias in Helical Gear Noise Excitations
The prediction of gear noise may normally be treated as a classical source/path/receiver problem. Usually the excitation occurs in the gear mesh and the...
Low-Cycle Bending Fatigue of AISI 9310 Steel Spur Gears
An investigation of the low-cycle bending fatigue of spur gears made from AISI 9310 gear steel was completed. Tests were conducted using the single-tooth...
Natural Frequencies & Modal Properties of Compound Planetary Gears
This paper presents the structured vibration mode and natural frequency properties of compound planetary gears of general description, including those with equally-spaced planets and...
A Revelation in Advanced Software Technology
Bryant Grinder has always been at the forefront of grinding machine technology. Founded in Springfield, Vermont, in 1909, the company has the distinction of...
Direct Design for High-Performance Gear Transmissions
This paper presents a unique methodology for designing gears to enhance strength and life while allowing size and wear reduction. This new approach, trade...
Straight Bevel Gears on Phoenix Machines Using Coniflex Tools
Manufacturing of straight bevel gears was in the past only possible on specially dedicated mechanical machines. Such machines are by nature difficult to set...
The Team Approach to Precision Plastic Gearing
Since antiquity, gears and gear systems have constantly been developed and improved. This continuing process includes the evolution of plastic gears, which started out...
A Solid State of Affairs
Testing for the Evaluation of the Oils
Lubricants are essential in maintaining the condition of fixed or mobile assets. Any degradation in the lubricant’s properties...
Surface Hardening: Hard Turning or Grinding?
Hard turning and grinding are competing finishing processes for the manufacture of precision mechanical components such as bearings, gears, cams, etc. Surface hardening at...
Heat Treating Heavy-Duty Gears
Whether required to pace the movement of a precision watch or a giant wind turbine, gears play an essential role in the performance of...
Synthetic Lubricants for Real Results
For centuries lubricants have been utilized as a way to reduce friction and wear on moving parts. In 2005, approximately 40 million tons of...
