company news about Gear Grinding – a form of high precision in bevel gear machining

Grinding bevel gear is a high-precision form in bevel gear machining, which is introduced from many angles and aspects:

Structural features

1.Tooth shape: the tooth line is generally curved or straight, and the curved bevel gears such as arc bevel gears, cycloid bevel gears, etc., have good transmission stability and bearing capacity; Linear bevel gears are relatively simple to manufacture, but the transmission smoothness is slightly poor.

2.Gear tooth distribution: The gear teeth are distributed on the conical surface, from the big end to the small end of the gear, the modulus, tooth thickness and other parameters gradually decrease, so that the meshing characteristics of the gear at different diameters are different.

3.Installation method: There are usually two kinds, one is connected with the shaft through a key or spline for transmitting torque and power; The other is directly integrated with the shaft, which is suitable for some occasions with high requirements for structural compactness.

Processing technology

1.Rough machining: generally use milling and other methods to carry out the preliminary processing of the tooth blank, provide a suitable base shape for the subsequent gear grinding process, remove most of the allowance, and leave about 0.5-1mm machining allowance for the grinding tooth.

2.Heat treatment: After rough machining, heat treatment such as quenching is often carried out to improve the hardness and wear resistance of the tooth surface, but it will lead to a certain deformation of the gear, which needs to be corrected by grinding the teeth.

3.Grinding teeth

*Profile grinding: The shape of the forming grinding wheel is used to match the cogging shape of the bevel gear to be machined, and the tooth shape is directly grinded, which is more efficient, but the grinding wheel dressing is more complicated.

*Gear grinding: Based on the meshing principle of gear and rack, the tooth shape is developed through the relative movement of the grinding wheel and the workpiece, and the machining accuracy is high, which can effectively ensure the tooth shape and tooth direction accuracy, but the machining efficiency is relatively low.

Performance Benefits

1.High-precision transmission: The gear grinding process can greatly improve the tooth shape accuracy and tooth direction accuracy of the bevel gear, and the meshing between the gears is more accurate during transmission, and the transmission ratio is stable, which can control the transmission error within a very small range.

2.Low noise operation: due to the high accuracy of the tooth surface, the mesh between the teeth is more stable, the vibration and impact are small, and the noise generated during operation is significantly reduced, which can effectively improve the operation comfort and stability of the equipment.

3.High bearing capacity: After grinding processing, the roughness of the tooth surface is reduced, the contact stress distribution is more uniform, and the hardness of the tooth surface after heat treatment is high, so that the bevel gear can bear greater load, which is suitable for heavy-duty transmission occasions.

4.Long service life: high precision and low wear characteristics, reduce the probability of fatigue wear, gluing and other failure forms of the tooth surface, prolong the service life of the gear, reduce the maintenance cost and downtime of the equipment.

Fields of application

1.Automotive industry: It is often used in the differential, transfer case and other components of automobiles to achieve the distribution and transmission of power and ensure the smooth driving and steering of the car in different road conditions.

2.Aerospace: In the key parts of the aircraft's engine reducer, landing gear transmission system and other key parts, the grinding bevel gear ensures the safe operation and efficient transmission of aviation equipment with its high precision and high reliability.

3.Industrial machinery: widely used in all kinds of machine tools, reducers, printing machinery, packaging machinery and other industrial equipment, used to achieve power transmission and speed conversion between different axes, is a key component to ensure the accuracy and performance of industrial equipment.

4.Shipbuilding: It plays an important role in the ship's propulsion system and steering gear transmission, and can withstand huge torque and impact in the harsh marine environment to ensure the ship's power transmission and handling performance.

Comparison with other gears

1.Compared to spur cylindrical gears: grinding bevel gears transmit motion and power between intersecting shafts, while spur cylindrical gears are used for parallel shaft transmission. The transmission smoothness and bearing capacity of the grinding bevel gear are better than that of the spur cylindrical gear in some cases, especially in the case of the need to change the direction of transmission, which has irreplaceable advantages.

2.Compared with helical cylindrical gears: helical cylindrical gears have the advantages of stable transmission and large bearing capacity in parallel shaft transmission, but grinding bevel gears have unique application value in the field of intersecting shaft transmission. The design and manufacture of grinding bevel gears are relatively complex, but they can adapt to special transmission needs and play an irreplaceable role in specific mechanical structures.

3.Compared with non-grinding bevel gears: The machining cost of non-grinding bevel gears is relatively low, but the accuracy and performance are limited. The grinding bevel gear is significantly better than the non-grinding bevel gear in terms of accuracy, noise, bearing capacity and service life, and is suitable for high-end application scenarios with high transmission quality requirements.

DINGSCO, boasting strong scientific capabilities and advanced equipments, have won the trust of enterprises both at home and abroad with our stable and excellent quality. During the gear grinding process, we utilize precision grinding equipment and strictly control key grinding parameters. This ensures that the gear reach the optimal level.