The past life of the gear, this is the robot's own science!


Time:2024-01-12 15:57

From watches to steam turbines, all kinds of gears, large and small, are widely used in various products as mechanical parts to convey power.

The market size of gears and gear components in the world is said to have reached one trillion yuan, and it is predicted that the industry will continue to develop rapidly in the future.

A Brief History of Gear

Speaking of the history of gears, it is said that it can be traced back to BC. One of the extremely old gears in the existing world can be said to be the gears installed in the machine in the ancient Greek era called "Antikytra Machinery.

At the same time, in the history of gears, it is said that the one who left us great achievements should be Leonardo da Vinci. Through his research, gears made great progress in the second half of the 15th century. It can be said that the foundation of the gear shape used now was fixed in that era.

During the industrial revolution in the second half of the 18th century, various gear cutting machines were developed one after another to make the mass production of gears possible, and gears were widely used in all manufacturing industries. Gears provided support in the rapidly changing manufacturing industry that followed, playing a symbolic role in industrial revitalization.

Today, as a representative power transmission mechanism, in addition to gears, torque converters, belts, chain methods, etc. can also be listed, but in terms of transmission efficiency, load capacity, and life, the superiority of gears is still recognized by everyone. In Japan, a new shape of bevel gear "IP (Involute Leveler) bevel gear" that can increase production efficiency to 10 times was developed in 2016, which has attracted great attention in the world. Further, research on mass production of gears using CFRP (carbon fiber reinforced plastic) is also underway, and further progress can be expected in the future.

Function and Type of Gear The function of the gear is not only to transmit the rotational motion in a parallel manner, but also to convert the rotational motion into a linear motion, to convert the rotational direction by combining gears having different rotational axes, to convert the rotational speed by combining gears having different sizes, and so on. In order to achieve the above objects, various gears such as a spur gear, a rack, a worm gear, and a bevel gear have been developed.

In addition to changing the speed through the combination of gears, in a variety of different gear axial shapes (the shape of the longer direction of the teeth), there are vertical (straight teeth), oblique (helical teeth), There are curved (helical teeth), etc. If these are also taken into account and the gears are classified, the types of gears can reach more than a dozen.