Advantages and disadvantages of carbide saw blade gear grinding machine

 

 

Advantages of tooth grinding:

 

For spiral bevel gears and hypoid gears, the grinding teeth can be interchanged, and it is no longer necessary to use them in pairs, and the gears with grinding teeth must be used in pairs, so that part of the cost can be saved;

 

Gear grinding can improve gear accuracy and transmission accuracy, while gear grinding can only improve the surface roughness of the gear;

 

Grinding teeth can save many products that cannot be matched with teeth and reduce the loss of many waste products;

 

For many domestic steel products that do not meet the requirements and cause excessive deformation after heat treatment, the use of gear grinding technology can correct this effect, but gear grinding cannot achieve this effect;

 

The first domestic gear manufacturers to introduce gear grinding technology have achieved very good economic benefits; many foreign advanced spiral bevel gear manufacturers use gear grinding technology:

 

With the improvement of gear grinding efficiency and the increase of production batches, the manufacturing cost will be greatly reduced;

 

Disadvantages of tooth grinding:

 

For the spiral bevel gear made of Gleason arc shrinking teeth, when the transmission ratio 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 is used to improve production efficiency. When the cylindrical grinding wheel is used to directly grind the tooth surface, the grinding wheel and the tooth surface will have full tooth surface contact, not only because the coolant is difficult to enter the grinding contact area, it is easy to burn the tooth surface but also makes chip removal very difficult.

 

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

 

The color change only reflects the more serious burn phenomenon, but when the color of the gear tooth surface does not change, the surface metallographic structure may also have been burned and changed (that is, dark burn).

 

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