Gear machining process (7 steps make you feel simple)

One method of gear machining is forming method, that is, using a forming milling cutter with the same shape as the tooth slot to be cut, such as milling teeth; The other is generating method, which is a processing method of cutting tooth profile by using the meshing movement of cutter and driven gear, such as hobbing and gear shaping. Let's learn more about the gear machining process.

First,? Gear machining process flow

1. Forging blank

Hot die forging is still a widely used blank forging process for automobile gear parts. In recent years, cross wedge rolling technology has been obtained in shaft processing? Widely promoted. This technology is especially suitable for manufacturing blanks of complex stepped shafts. It not only has high precision, but also has small post-processing margin. And the production efficiency is high. ?

normalization

The purpose of this process is to obtain the hardness suitable for subsequent tooth cutting and prepare for the final heat treatment, thus effectively reducing the hardness. Heat treatment deformation. ? The material used for gear steel is usually 20CrMnTi, which is generally normalized because of the influence of personnel. Equipment and environment have great influence. It is difficult to control the cooling rate and uniformity of workpiece, which leads to large hardness dispersion and uneven metallographic structure, which directly affects metal cutting. Cutting and final heat treatment make the thermal deformation large and irregular, and the quality of parts can not be controlled. Therefore, the isothermal normalizing process is adopted. Real? Practice has proved that the adoption of isothermal normalization has effectively changed the disadvantages of conventional normalization, and the product quality is stable and reliable.

3. Turn?

In order to meet the positioning requirements of high-precision gear machining, all gear blanks are machined by CNC lathe, and mechanical clamping is used instead of grinding. Knife, realize one-time clamping and processing the aperture, end face and outer diameter at the same time, which not only ensures the verticality requirements of the inner hole and end face, but also? Ensure that the size dispersion of large gear blank production is small. So as to improve that precision of the gear blank and ensure the proces quality of subsequent gears. Besides,? The high efficiency of NC lathe machining also greatly reduces the number of equipment, which has good economy.

4. Hobbing and gear forming

Ordinary hobbing machines and gear shapers are still widely used to process teeth. Although the adjustment and maintenance are convenient, the production efficiency is low. To achieve large capacity, multiple machines need to be produced at the same time. With the development of coating technology, it is very convenient to re-coat hob and gear shaper blades after grinding. After coating, the service life of coated tools can be obviously improved, generally by more than 90%, and the number of tool changes and cutting edges can be effectively reduced. Grinding time, significant benefits.

5. Shave your teeth? Radial gear shaving technology is widely used in a large number of steam turbines because of its high efficiency and easy realization of tooth profile design and tooth profile modification requirements. In the production of turning gear. After the technical transformation of 1995, the company bought a special radial gear shaving machine for the Italian company, which has been applied in this technology. Mature use, stable and reliable processing quality.

6. Heat treatment

Automobile gears need carburizing and quenching to ensure their good mechanical properties. Is it stable for products that are no longer ground after heating? Reliable heat treatment equipment is very important. The company introduced the continuous carburizing and quenching production line of Lloyd's of Germany, and was satisfied? The heat treatment effect of. ?

7. Grinding processing

It is mainly to finish the inner hole, end face and outer diameter of the shaft of the heat-treated gear to improve the dimensional accuracy and reduce the size. Tolerance of shape and position.

Second,? Gear processing plant

1、? Pingyang county aojiang Zong Yi gear processing factory

2、? Wenling Yongchang Zhu Ye Co., Ltd.

3、? Taizhou tongyu variable speed machinery co., ltd

4、? Cixi Sung Hoon hardware plastics plant

5、? Suzhou Hongyun Transmission Electromechanical Equipment Co., Ltd.

6、? Jinliyuan mechanical & electrical equipment hardware factory

7、? Guangzhou Fu Sen electromechanical technology co., ltd

The above introduction of gear processing technology and manufacturers will make you make a better choice.

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