Predicting Gear Sliding Losses
Gearbox efficiency is becoming increasingly important for vehicle manufacturers to help achieve their overall fuel savings goals. Enhancing gearbox efficiency […]
Leveraging the complementary strengths of orbitless and planetary drives
An orbitless drive is a novel, fixed-ratio, epicyclic drive that includes a second carrier in place of a ring gear. […]
Tooth root testing of steels with high cleanliness
The power density of gearboxes is continuously increased through different research activities. Besides new material developments, steel cleanliness comes to […]
Conjugate Action Law in Intersected-Axes Gear Pairs and in Crossed-Axes Gear Pairs
The article deals with the kinematics and the geometry of geometrically-accurate gearing (with perfect gearing). Considered at the beginning for […]
Reliability of gears: Determination of statistically validated material strength numbers
One of the most important goals when designing a gearbox is to ensure a sufficient reliability in operation. Depending on […]
Integrated Approach for Gear Testing of High-Performance Clean Steels
The power density of gearboxes is continuously increased by different research activities. Besides new material developments, the cleanliness of steels […]
Experimental tests to predict plastic gears’ lifetime
One of the major problems of plastic gears is the lack of data about their lifetime. Literature doesn’t contain numerous […]
Inspection & Metrology: ‘We must never stand still’
Small series and prototype production at ZF Friedrichshafen AG create new challenges for quality control time and again: measurement programs […]
Online exclusive: How many mils is your coating?
Instantaneous handheld coating thickness gauges that can be operated by virtually any technician deliver lab-quality readings even on curved and […]
Two-Probe Pitch Inspection Method For Large Gears
A gear’s pitch (a k a index or spacing) accuracy is one of the most fundamental gear characteristics affecting its […]
Closed Loop Machining of Cylindrical Gears
Leonhard Euler’s 1760 invention of making cylindrical gears with an involute profile was the beginning of a success story. As […]
