The types of gears in terms of their sex
Cemented steel, as one of the most common materials used in the manufacture of gears, is an ideal choice for many applications due to its strength and durability. Due to its high surface hardness, this steel is an excellent material for making gears. The price of cemented steel varies depending on its type and grade. In order to choose the right cemented steel, in addition to the price of cemented steel, other factors such as wear resistance, fatigue resistance, impact resistance and corrosion resistance should also be considered.
In addition to alloy steels, other materials such as cast iron, Bronze, aluminum and even industrial plastics are also used in the manufacture of gears. Choosing the right material for a gear depends on various factors, including the load, rotation speed, working environment and required accuracy.
The types of gears in terms of their shape
Simple gear
The simple gear is one of the most basic and widely used types of gears. This mechanical part is used in many devices and machines due to its simple structure and effective performance.
Structure of a simple gear:
A simple gear made of a disc. It is formed in a circular shape, on the circumference of which there are teeth parallel to the axis of rotation. These teeth are engaged with the adjacent gear teeth and transfer the rotational movement from one axis to another axis.
Spiral gear
Helical gears are one of the most widely used types of gears that are used in many industrial devices and machines. Due to their special structure, these gears have many advantages over simple gears.
Spiral gear structure:
Unlike simple gears, whose teeth are The face is parallel to the axis of rotation, the teeth of spiral gears are placed diagonally to the axis of rotation. This structure causes the contact between the teeth to be established gradually and to be cut off gradually.
Conical gear
A bevel gear is a type of gear that is used to transmit power between two shafts that are at a certain angle to each other. Usually this angle is 90 degrees, but it can have other angles as well. The appearance of the teeth of this type of gears is conical, and that is why they are called bevel gears.
Shoulder gear
The shoulder gear is a basic part in many mechanisms and devices, which is responsible for converting rotary motion into linear motion or vice versa. This type of gear consists of two main parts:
Rack: It is a metal bar or strip with parallel teeth on one of its surfaces.
Pinion: It is a circular gear that engages with the shoulder teeth.
The shoulder gear mechanism is such that in That pinion rotates and its teeth with the teeth The shoulder is engaged and causes linear movement of the shoulder forward or backward. In other words, the rotary movement of the pinion becomes the linear movement of the shoulder and vice versa.
Coil gear
Helical gears are similar to simple gears but have angled teeth that are cut at an angle to the axis of the gear. This design allows for smoother operation with less noise and vibration than simple gears. Helical gears can transmit larger loads than plain gears because the angled teeth distribute the load evenly across the surface of the gear. They are usually used in high-speed applications such as automotive transmissions and heavy machinery.