Reduction of the tonality of gear noise by application of topography scattering for ground...
The noise behavior of transmission is mainly caused by the excitation in the gear mesh. The standardized design and calculation methods for gears concentrate...
Gear forging opportunities
Forging has long been used to manufacture gears, particularly in the production of gear blanks, which often uses open-die forging, closed-die forging, and hot...
Load intensity distribution factor evaluation from strain gauges at the gear root
Strain gauges are commonly used to obtain the load intensity distribution on the flank of a gear mesh. The standard methodology consists in installing...
Hob quality basics
The quality of a hob directly affects the final quality of the gear it generates. AGMA has developed a standard covering the allowable tolerances...
Perfect Pitch
Gear manufacturers are turning to workholding to help reduce costs without compromising quality. Pitch Line Fixtures, for example, can be used to provide a...
Predicting Gear Sliding Losses
Gearbox efficiency is becoming increasingly important for vehicle manufacturers to help achieve their overall fuel savings goals. Enhancing gearbox efficiency is also critical in...
Lubrication and its role in gear-failure analysis
When gears fail, it is most often due to fatigue and overloading. The most common form of distress and failure is actual breakage, but...
Selecting a worm gear lubricant
To compete in the marketplace, engineers across all industries are being tasked with increasing gearbox efficiency. Modern designs therefore must achieve high-power transfer without...
Power Skiving with integrated cutter resharpening
Gear manufacturing by Power Skiving takes the traditional approach: After a cutter has reached its maximum wear, the operator changes the cutter, adjusts the...
A new approach for the calculation of worm shaft deflection in worm and crossed...
Worm gear drives are characterized by a simple design, which allows the realization of a high gear ratio within one stage. Furthermore, they are...
The commonalities and differences between helical ‘low-tooth-count gears’ and ‘multiple-start worms’
The article deals with geometrically-accurate worm gear pairs that feature line contact between tooth flanks of a worm gear and thread surfaces of a...
Multi-sensor metrology advances
Demand for accurate gears delivered on tight schedules is increasing. To keep pace, technology is continually advancing, enabling manufacturers to do more in the...
Documenting defects with greater accuracy
We are in an era where modern technology and automation are rapidly evolving and pushing out conventional hand-operated tools. The LED magnifying glass lamp...
Finding the ideal materials for gears
When designing an individual gear or a gear train, the choice of material will either be the primary factor on which the gear geometry...
Nonlinear dynamic characteristic analysis of a coated gear transmission system
Coatings can significantly improve the load-carrying performance of a gear surface, but how they affect the vibration characteristic of the system is an urgent...
Electrification in the automotive domain
In the modern world, there is no limit to the varieties of vehicles available in the market. From variations in engine types such as...
New standardized calculation method of the tooth flank fracture load capacity of bevel and...
Bevel and hypoid gears are widespread in automotive, industrial, marine and aeronautical applications for transmitting power between crossed axles. Future trends show that the...
‘Never say: It’s not my job’
After an evening of dinner and a meet-and-greet with his wife and children, one of Tom Kelly’s dear friends and colleagues sat the senior...
Chamfering of cylindrical gears: Innovative new cutting solutions for efficient gear production
Cylindrical gear chamfering and deburring is a rather “unloved” process that adds cost but without delivering readily apparent improvements in gear quality. However, the...
Power skiving: High quality, productivity, and cost efficiency in gear cutting
Like electric mobility, the technology of power skiving has been known for more than 100 years and, with the availability of 5-axis machining...
