Network optimization information:

The motion track of the front reel of the combine is cycloid. We can see it moving forward in a circle. First insert the wheat ear vertically, then pull the straw back to cut the cutter, and then pull it vertically upwards. This is the working principle of the grain pulling roll.

Many agricultural machinery, such as rice transplanters, have cycloid curves on the movement track of the axis of the rice claw row and the movement track of the tip of the rotary tiller blade.

Leonardo da Vinci, an Italian artist and scientist in the 15th century, invented many machines and used gears. However, the gear teeth of this period could not mesh well with each other. High speed cycloidal motor In this way, the gap between teeth can only be increased, and this excessive gap will inevitably lead to relaxation. Later, in order to make the gear mesh better, we hope to get the shape of the gear through calculation. Therefore, mathematicians also participated in gear research. In 1674, Danish astronomer Remir published a discussion on the reference curve (cycloid) for gear manufacturing. In 1766, French mathematician Cano published a more detailed discussion.

At present, the cycloid is used as the profile of the gears of many precision instruments in mechanical transmission, which is characterized by small wear, stable transmission, labor saving, durability and low noise. For example, the gears in the mechanical watch use cycloidal teeth. In addition, Small hydraulic cycloidal motor It is widely used in industry, such as cycloidal pinwheel planetary reducer Cycloid hydraulic motor Etc.