Mechanical power transmission

Belt tensioner systems for belt drives

Belt drive tec-science - 03/07/2021 0

Various belt tensioner systems are used to maintain the tension in the belt. The most important ones are described in more detail below. https://youtu.be/cZeqLOSA_qE Why mus...

Influence of the offset on the spiral angle

Hypoid gears (screw bevel gears)

Gear types tec-science - 03/05/2021 0

With hypoid gears, rotary motions between non-intersecting axes can be realized! With the bevel gears considered so far, the axes of the ring gear and...

External and internal toothing of gears

Gear types tec-science - 03/05/2021 0

With internal toothing, the center distance to an externally toothed gear can be shortened. For cylindrical gears, a basic distinction can be made between external...

Herringbone gears and double helical gears

Gear types tec-science - 03/05/2021 0

Herringbone gears combine the advantage of helical gears (high load capacity) with that of spur gears (no axial forces). Herringbone gears In order to combine the...

Helical gears

Gear types tec-science - 03/05/2021 0

Helical gears have a lower noise level and can transmit higher torques than spur gears! When it comes down to reduce noises and transmit high...

Screw gears (crossed helical gears)

Gear types tec-science - 03/05/2021 0

Screw gears or crossed helical gears are hyperboloid gears that allow the skew mating of the gear shafts! With the gears considered so far, the...

Spur gears (straight-cut gears)

Gear types tec-science - 03/05/2021 0

Straight-cut gears (spur gears) are the simplest type of toothing. In a spur gear, up to 3 teeth are in mesh at the same...

Rack (toothed bar)

Gear types tec-science - 03/05/2021 0

Racks (toothed bar) allow the rotary motion of a spur gear to be converted into a straight-line motion of the rack. While only rotary motions...

What types of transmissions (gearboxes) are there?

Basics tec-science - 03/04/2021 0

Roughly speaking, gearboxes are divided into four types: gear drives, belt drives, chain drives and friction wheel drive. Introduction Transmission are available in many different types,...

What is a transmission (gearbox) and what is it used for?

Basics tec-science - 03/04/2021 0

Transmissions control the power supplied in favor of a high velocity (rotational speed) or in favor of a high force (torque)! Where are gearboxes used? In...

How does a cycloidal drive work?

Planetary gear tec-science - 01/14/2019 0

In this article, you will learn more about the design, the advantages and disadvantages of a cycloidal drive and its application. https://youtu.be/OguhMDiTqY4 Operating principle The animation below...

Design of the cycloidal disc with an ordinary cycloid

Construction of the cycloidal disc of a cycloidal drive

Planetary gear tec-science - 01/14/2019 0

Learn more about the design of the cycloidal disc of a cycloidal drive in this article. https://youtu.be/OguhMDiTqY4 Design of the cycloidal disc Cycloidal disc with ordinary cycloid As...

Arrangement of the pins (trundles) on the rolling circle

Lantern pinion as a special case of cycloidal gear

Cycloidal gear tec-science - 12/27/2018 0

In this article, you can learn more about a lantern pinion as a special case of cycloidal gear. https://youtu.be/yDFc9prncII Operating principle A special case of cycloidal gearing...

Line of contact of cycloidal gears during meshing

Meshing of cycloidal gears

Cycloidal gear tec-science - 12/27/2018 0

In this article, learn more about the meshing of the teeth of cycloidal gears. https://youtu.be/0qiKLyTbS9M Line of action The figure below shows the meshing of two cycloidal...

Construction of a cycloid (epicycloid and hypocycloid)

Construction and design of cycloidal gears

Cycloidal gear tec-science - 12/21/2018 0

The shape of the flank of a cycloidal gear corresponds to a cycloid constructed by rolling a rolling circle on a base circle. https://youtu.be/0qiKLyTbS9M Construction of...

What is a roots type blower and how does it work?

Cycloidal gear tec-science - 12/21/2018 0

In this article, learn more about the design and operation of a roots type blower and its application as a supercharger. https://youtu.be/2rSs-DoOEsg Operating principle The animation below...

Manufacturing undercut during hobbing (yellow and red gear)

Undercut of gears

Involute gear tec-science - 12/02/2018 0

Undercut occurs when the number of teeth of a gear is too small. An undercut leads to a weakening of the strength of the...

Rack

Involute gear tec-science - 11/04/2018 0

In this article, learn more about the meshing of the teeth of a gear with the teeth of a rack. https://youtu.be/g4USx2hj3eU Introduction The fundamentals when two gears...

Engaging of involute gears (meshing)

Involute gear tec-science - 10/31/2018 0

The points of contact of two meshing tooth flanks describe a straight line for involute gears (line of action or line of engagement). https://youtu.be/lMmWsbdTDng Line of...

Calculation of involute gears

Involute gear tec-science - 10/31/2018 0

https://youtu.be/wsKFVU3X8I8 Involute function For the calculation of involute gears, the involute tooth flank must first be described mathematically. The figure below shows the involute belonging to...

Gear cutting (gear manufacturing)

Involute gear tec-science - 10/31/2018 0

Learn more about the different manufacturing processes for cutting involute gears in this article. Gear hobbing Involute gears are often manufactured by hobbing. The cutting edges...

Profile shift of involute gears

Involute gear tec-science - 10/31/2018 0

In the case of a profile shift, the reference profile of the gear is shifted outwards during the manufacturing process in order to positively...

Construction and design of involute gears

Involute gear tec-science - 10/31/2018 0

Involute toothing is often used in mechanical engineering for gears, as it offers favorable meshing and is easy to produce. https://youtu.be/99Msd8sSF8Y Introduction In mechanical engineering, the involute...

5th step - symmetrical arrangement of the bevel gears to avoid bending stresses

How does a differential gear work?

Planetary gear tec-science - 10/25/2018 0

Learn more about the design, function and application of a differential gear and the differential lock in this article. Why does a car need a...

How does a three-speed gear hub work?

Planetary gear tec-science - 09/21/2018 0

Learn more about the structure and function of the planetary gear in a three-speed gear hub in this article. https://youtu.be/8R3xzAdxYIc Assembly and function The figure below schematically...

Relationship between the pitch circle diameters and the number of teeth

Derivation of Willis equation (fundamental equation of planetary gears)

Planetary gear tec-science - 09/21/2018 0

The Willis equation describes the motion of the individual gears of a planetary gearbox (epicyclic gear). Superposition of motions The change in speed of planetary gearboxes...

How does a planetary gear work?

Planetary gear tec-science - 09/21/2018 0

A planetary gear is an epicyclic gear in which several gears (planet gears) mesh with a central gear (sun gear). Stationary gearbox So-called stationary gearboxes are characterised...