What is a Spur Gears

 

Spur gears are an extremely important and common transmission element in the mechanical field, and they play a key role in the operation of various mechanical devices.

 

Spur gears, as the name suggests, have straight teeth. The teeth of the gear are distributed on the outer surface of the cylinder. From the appearance, it looks like a cylinder with teeth. Gears transmit motion between two parallel shafts.

When a spur gear meshes with another spur gear, power is transmitted from one gear to the other through the mutual occlusion of the teeth. During transmission, the rotation of the master gear drives the teeth into contact with the teeth of the driven gear, which causes the driven gear to rotate with it. The transmission ratio of the spur gear is determined by the number of teeth of the two gears, and the ratio of the number of teeth determines the relationship between the rotational speed of the output shaft and the rotational speed of the input shaft. For example, if a large gear meshes with a pinion gear, and the large gear has a higher number of teeth, then the pinion gear will rotate faster at the same input speed, thus realizing the function of variable speed.

 

 

First of all, it is the selection of raw materials, Tongcai adopts high-quality steel as raw materials, such as 45 steel, 20CrMnTi and so on. These steels can meet the strength of spur gear work.

 

Then it is the production of the blank. By means of casting and forging, the blank material is polished, and the temperature is controlled during the forging process so that the quality of the material is improved.

 

The blank is normalized or annealed to soften the material for subsequent cutting.

 

Gear processing including milling, gear pulling, hobbing, gear insertion, gear planing, honing, grinding, etc., which some of the operations (partially explained)

 

Milling: the tooth blank set on the mandrel, installed in the indexing head and tailstock in the top, after milling a tooth to exit the indexing, in turn, one by one to complete the milling of the number of teeth (horizontal milling machine).

 

Pulling teeth: commonly used in hand processing of internal gears, suitable for mass production.

Hobbing: also suitable for various mass production, processing medium quality external cylindrical gears and worm gears.

 

Gear insertion: also for machining internal and external cylindrical gears, multi-link gears and small racks.

 

Gear planing: Used in the processing of spur gear tooth surface.

 

Gear honing, grinding, etc. are more in processing gears. Finishing of teeth for high precision gears or hardened gears. The machining accuracy is generally IT6 - IT7.

 

 

The advantages of spur gears are actually quite obvious. The structure is relatively simple, because the manufacturing process is more mature nowadays, and the cost is lower, which gives a great advantage in mass production. The transmission of spur gears is smooth and relatively quiet. Coupled with the meshing of the teeth is continuous, so in the transmission process, the transmission of force is more uniform, will not produce significant impact and vibration, noise generation is also less. The transmission efficiency of spur gears is high, and it can effectively transfer power from one component to another, reducing the loss of energy.

 

 

Spur gears are not perfect. The gears are straight and may generate large radial forces during transmission, placing higher demands on the shafts and bearings and requiring a stronger support structure to withstand these forces. The transmission accuracy of spur gears is relatively low, and for some occasions where the transmission accuracy is required to be high, other types of gearing may need to be used, such as helical gears or worm gears.

 

Spur gears are one of the core components in mechanical applications. They are highly efficient in transmitting power in a way that can stably transfer power from one component to another, and are mainly used in machine tools, textile machinery, printing machinery and other equipment.

 

Spur gears are also commonly used in variable speed transmission. Through the combination of spur gears with different numbers of teeth, different transmission ratios can be achieved. In automobiles, motorcycles and other means of transportation, the transmission is the use of spur gears to achieve the principle of speed change to achieve the conversion of different vehicle speeds. In industrial production, some need to adjust the speed of the equipment will also use spur gears.

 

Some need larger torque also need spur gears. For example, in cranes, excavators and other heavy machinery and equipment, the spur gear transmission system can provide sufficient torque, so that mechanical equipment can easily complete the lifting of heavy objects, digging and other work.

 

Spur gear is a mechanical transmission, power transmission, variable speed transmission, increase torque and other aspects have a wide range of uses. It has a relatively simple structure, high reliability, good transmission efficiency, and can meet the needs of a variety of different mechanical systems. With the continuous progress of science and technology, the design and manufacturing technology of spur gears is also improving, and its application will be more and more extensive, bringing more convenience and benefits for human production and life.

 

The above article tells what is a spur gear, in our place in addition to spur gears, can be processed many kinds of gears, such as helical gears, bevel gears, turbine, including large gears. If you need gear processing or batch processing, you can contact us to provide a quote request, we will promptly check and give you a satisfactory price!