Do you know all about the seven major gear manufacturing processes?

One method of gear processing is the generative method, which uses the meshing motion of the cutter and the driven gear to cut out the tooth profile, such as gear hobbing and gear shaping.The other is the forming method, which uses a forming milling cutter that exactly matches the shape of the tooth to be cut to cut out the tooth shape, such as tooth milling.Let's follow EP to learn about the seven major gears processing process!

Seven major gear processing processes:

1. Forging billet:

Hot die forging is stillCar gearBlank forging process widely used for parts.In recent years, cross wedge rolling technology has been widely promoted in shaft machining.

This technology is particularly suitable for making blanks for more complex stepped shafts. It not only has high precision, small subsequent machining allowances, but also high production efficiency. 

2. Normalizing:

The purpose of this process is to obtain the hardness suitable for subsequent gear cutting and prepare the organization for the final heat treatment, so as to effectively reduce the heat treatment deformation. 

Practice has proved that the use of isothermal normalizing has effectively changed the shortcomings of normal normalizing, and the product quality is stable and reliable.

3. Turning processing: 

to satisfyHigh-precision gear machiningAccording to the positioning requirements, the machining of the tooth blanks is all carried out by CNC lathes, and the turning tools are mechanically clamped without heavy grinding, which realizes the simultaneous completion of the hole diameter, end face and outer diameter processing in one clamping.

This not only guarantees the verticality requirements of the inner hole and the end face, but also ensures the small size dispersion of the mass production of tooth blanks.

Thereby improving the precision of the tooth blank and ensuring the subsequent sequenceGear processingthe quality of.In addition, the high efficiency of CNC lathe processing also greatly reduces the number of equipment, and the economy is good.

4. Rolling and shaping gears:

Common gear hobbing machines and gear shaping machines are still widely used for processing gears. Although adjustment and maintenance are convenient, the production efficiency is low. If a large capacity is completed, multiple machines are required to produce at the same time.

With the development of coating technology, the re-coating after sharpening of hobs and inserts is very convenient. Coated tools can significantly increase the service life, generally by more than 90%, effectively reducing the number of tool changes And sharpening time, the benefit is significant.

5. Shaving teeth: 

Radial gear shaving technology is widely used in the production of high-volume automobile gears due to its high efficiency, easy realization of the modification requirements of the designed tooth profile and tooth direction.

6. Heat treatment:

Automobile gears require carburizing and quenching to ensure their good mechanical properties.

For products that no longer undergo gear grinding after heating, stable and reliable heat treatment equipment is essential.

7. Grinding processing:

It is mainly to finish the heat-treated gear inner hole, end face, shaft outer diameter and other parts to improve the dimensional accuracy and reduce the form and position tolerance.

The above seven gear processing processes are for reference only. For unclear parts or related requirements, please click the consultation window on the right side of EP for free consultation.