A comparison of an analytical and FEA approach in determining thermal lead correction for high-speed gears
For high-speed applications, gears of large dimensions and high-power density are used. Temperature distribution in those rotors is much different […]
Inspection & Metrology: The growing role of metrology in EV production
It has become abundantly clear that not only are electric vehicles (EVs) becoming more prevalent on the roads but that […]
Inspection & Metrology: Overcoming metrology bottlenecks in additive manufacturing
Undoubtedly there are many benefits associated with the use of additive manufacturing (AM) as a production technology. Across industries, manufacturers […]
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 […]
Predicting Gear Sliding Losses
Gearbox efficiency is becoming increasingly important for vehicle manufacturers to help achieve their overall fuel savings goals. Enhancing gearbox efficiency […]
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 […]
Multi-sensor metrology advances
Demand for accurate gears delivered on tight schedules is increasing. To keep pace, technology is continually advancing, enabling manufacturers to […]
New standardized calculation method of the tooth flank fracture load capacity of bevel and hypoid gears
Bevel and hypoid gears are widespread in automotive, industrial, marine and aeronautical applications for transmitting power between crossed axles. Future […]
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 […]
Inspection & Metrology: Promoting manufacturing efficiency with 3D optical metrology
Woodward Inc. works with leading optical metrology instrument supplier ZYGO to “tune” its manufacturing processes by leveraging precise 3D surface […]
Inspection & Metrology: Laser interferometry – An enabling technology for optimized automated manufacturing
Technological advances over recent years have elevated metrology from being a “necessary evil” in manufacturing scenarios to enabling technologies, allowing […]
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 […]
