PCBN tools and PCD inserts are used in machining parts such as cylinder blocks, cylinder heads, axles, gearboxes, and bearing caps. As an important transmission

component in mechanical equipment, gears are widely used in machine tools, automobiles and other industries. With the production demand of the gear industry

continues to increase and the competition in the gear industry continues to intensify, how to improve the production efficiency under the requirements of ensuring

the dimensional accuracy and surface finish of the gear has become a problem in gear hard turning.

In order to meet the requirements of high wear resistance and high toughness of gears, heat treatment processes such as carburizing, quenching and tempering are

often used. For example, commonly used materials such as 20Cr and 20CrMnTi have a hardness of up to HRC58-62 after heat treatment. Carbide tools or ceramic tools 

are not processed, or they are not wearable and frequently change the tool. Some gears have intermittent cutting on the machined surface, such as there are oil holes 

on the end face or key grooves in the inner hole. The impact resistance of the carbide tool or ceramic tool is not good and it is easy to chip.

Dimensional accuracy and surface finish are required to be high and there is a problem of deformation. Although the conventional grinding process can meet the above

mentioned high-precision requirements, the grinding efficiency is low, the technical requirements of the operator are high, the scrap rate is high, and there are many 

defective products. In this case, LINKUT tipped CBN inserts that combines high wear resistance and impact resistance not only meets the requirements for gear size 

accuracy and surface finish during finishing, but also greatly improves production efficiency.