Introduction to the working principle and structure of rotary excavator cutting teeth?

Introduction to the working principle and structure of rotary excavator cutting teeth?
The cutter of a rotary excavator is a common mechanical transmission component, mainly used to convert rotary motion into linear motion or linear motion into rotary motion. Its working principle and structure are as follows:
Working principle:
The basic working principle of cutting teeth is based on the principle of gear transmission. When two gears mesh with each other, the rotational motion of one gear can be transmitted to the other gear. In cutting teeth, this principle is used to convert rotational motion into linear motion or vice versa. For example, when the cutter is part of the drill bit, the rotational motion of the drill bit is transmitted to the drill pipe through the cutter, causing the drill pipe to move in a straight line and achieve the purpose of drilling.
Structure Introduction:
The structure of the cutting teeth mainly includes two parts: gears and racks.
Gears: Gears are the active part of the cutting teeth, responsible for receiving power and transmitting motion. Its structure is mainly determined by parameters such as gear tooth shape, tooth pitch, number of teeth, pressure angle, tooth thickness, etc. The gear tooth profile generally adopts a circular arc tooth profile, which has a large contact area of the tooth surface, so it has strong transmission capacity and is also easy to manufacture. Tooth pitch refers to the distance between any two adjacent teeth on a gear. The number of teeth is a parameter that determines the size of a gear, that is, the number of teeth present on a complete gear. The pressure angle determines the angle between teeth and has a significant impact on the transmission efficiency and stability of gears. The tooth thickness determines the strength and wear resistance of gears.
Rack: A rack is a part that fits with a gear and is used to receive and transmit the motion of the gear. Its structure is similar to gears, and it also has parameters such as tooth shape, tooth pitch, and tooth thickness. However, unlike gears, racks typically move in a straight line because their shape is designed to fit with the gear and achieve the transition from rotational motion to linear motion.
Overall, the structure design of the cutting teeth is precise and can efficiently convert rotary motion into linear motion or vice versa, widely used in various mechanical transmission systems.