Gear transmission transmits motion and power between any two shafts in space through the meshing of teeth, and can change the form and speed of motion. Gear transmission has a wide range of applications, constant transmission ratio, high efficiency, and long service life. In the design and manufacturing process of mechanical parts, it is not only necessary to consider that the performance of the material can adapt to the working conditions of the part, making the part durable, but also requires that the material have good processing performance and economy, in order to improve the productivity of the part, reduce costs, and reduce consumption. If the gear material is improperly selected, premature damage or even failure of the parts can occur. Therefore, we should be cautious in selecting gear materials.

Machining Methods and Guidelines for Gears

Gear grinding: IT6~IT4 → IT3, Ra: 0.8~0.2 μ M principle: forming method and generating method.

(1) Gear grinding by forming method IT6~IT5, Ra: 0.8~0.4 μ m. Grinding with a shaped grinding wheel

We mainly introduce the main features of various racks

(1) Because the rack tooth profile is a straight line, each point on the tooth profile has the same pressure angle and is equal to the inclination angle of the tooth profile. This angle is called the tooth shape angle, and the standard value is 20 °.