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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. […]

The benefits of splines

What is a spline? According to the American Heritage Dictionary of the English Language, a spline is defined as: Noun: […]

Bringing forging equipment online to meet expanding production requirements

When forging operations need to expand production to meet increased demand for existing parts or to add new product lines, […]

Rapid and precise manufacturing of special involute gears for prototype testing

Due to the steadily increasing demands on the power density of mechanical transmissions, gears with special geometries are increasingly coming […]

Optimization of rack and pinion for offshore jack-up applications

Liftboats or jack-up oil rigs are essential for the oil and gas industry. The subsystem (rack, pinion, gearbox, and brake) […]

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 […]

Optimization of asymmetric tooth root generated with protuberance hob

The Direct Gear Design [1] method optimizes various parameters and elements of gear tooth geometry to achieve the required gear-drive […]

Long hob cost savings over the length of a job

Manufacturers consider many factors when shopping for a gear hob solution: What material is being cut? What is the pitch […]

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 […]

Gearwheel manufacturing in a 34-second cycle

Minimizing production times to ensure competitiveness is one of the most important challenges in the automotive industry — Henry Ford […]

Micro-skiving – (r)evolution of a known production process

Production of internally toothed gear wheels is possible in many different ways. Different techniques such as gashing, broaching, wire EDM, […]

Advantages of flat broaching machines

A broaching machine requires precision broaching tools to increase productivity and efficiency. New broaching tools can be expensive and difficult […]

Understanding the mounting distance: Crossed-axes gearing (hypoid gearing)

Mounting distance is one of the most critical design parameters in crossed-axes gearing (in hypoid gearing, spiroid gearing, and so […]

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 […]

High-end coating can increase gear-cutting productivity

The machining industry’s demand for increased productivity and reduced costs continues to drive developments that focus on innovative, state-of-the-art tools […]

Reducing Tool Wear in Spiral Bevel Gear Machining with the Finite Element Method

Due to the complexity of spiral bevel gear machining, the cutting tools can be a significant cost of gear manufacturing. […]

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 […]

Understanding the mounting distance: Intersected-axes gearing (bevel gearing)

Mounting distance is one of the most critical design parameters in intersected-axes gearing (in straight bevel gearing, spiral bevel gearing, […]

Root cause for noise excitation in geometrically-accurate (perfect) parallel-axes gearing

Gears are extensively used to transmit a rotation from a driving shaft to a driven shaft. Depending on the gear […]

Filling Some Gaps in Spline Design Guidelines: Centering, Friction, and Misalignment

Editor’s note: At the author’s request, some statements have been removed for clarity since the article was originally published in October, […]

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