The difference between gear grinding and gear grinding

Grinding and grinding teeth areGear finishingThey have their own differences and advantages and disadvantages. The following EP will explain them one by one for your reference.

XNUMX. Grinding gear finishing:

At present, this process is mainly adopted, which is a main method to eliminate heat treatment deformation after the tooth surface is hardened, and to further improve the gear accuracy and improve the roughness of the tooth surface.

Advantage:

1. It can improve the accuracy of transmission and the accuracy of materials.

2. Mass production and manufacturing costs will be greatly reduced, and very good economic benefits can be achieved.

3. It can reduce the loss of waste products and save many gears that cannot be matched.

4. Gear grinding can correct the problem of excessive deformation after heat treatment due to the failure to meet the requirements just now.

5. Grinding teeth can be interchanged, no longer need to be used in pairs, aligning with hyperboloid gears and spiral bevel gears.

Disadvantage:

1. For the spiral bevel gear made of Gleason's arc shrinking tooth, when the transmission is relatively large, because the shape of the large gear tooth profile of the spiral bevel gear movement pair is close to a straight line, the forming method will be used to improve the production efficiency; When the cylindrical grinding wheel is used to directly grind the tooth surface, the grinding wheel and the tooth surface have full tooth surface contact, which not only makes chip removal very difficult, but also causes the tooth surface to burn because the coolant does not enter the grinding contact area.

2. The instantaneous temperature in the grinding area can generally reach 800 to 1200 degrees Celsius, which is easy to form grinding burns and make the surface show a variety of colors.

3. When the color of the gear tooth surface has not changed, the surface metallographic structure may also have dark burns.

4. Under high-speed and heavy-duty use conditions, the loss of physical and mechanical properties of the surface layer of the product tooth surface caused by dark burns will affect the performance of the product.

5. The gear grinding efficiency is relatively low and the cost is relatively high.

XNUMX. Grinding gear finishing:

Grinding the teeth can correct the small tooth profile error of the hardened gear and improve the surface quality, reduce noise and improve the contact condition of the gear tooth surface, ensure the quiet meshing of the gear teeth, and improve the load capacity.

Advantage:

1. The manufacturing cost is lower than the grinding gear, and the efficiency is relatively higher.

2. It can be used for gear finishing where the precision is not too high.

3. Grinding the gear will not destroy the hardened layer of the gear with the best strength.

4. Since the hardened layer part of the gear with the best quality is not destroyed, the service life of the product can be better guaranteed.

5. Although the helical bevel gears with grinding teeth should be used in pairs, the conjugate of the tooth surface of the big wheel and the small wheel is the best.

6. The noise reduction effect of grinding teeth is relatively better.

Disadvantage:

1. Grinding the tooth can only reduce the surface roughness, and the material removal rate is low, and it is difficult to correct the tooth profile error.

I believe that after the above advantages and disadvantages of grinding and grinding teeth, everyone has a clearer understanding of their differences, if there are any unclear points or relatedGear processingIf you need, you can ask EP technicians for help.