Insert car (plunging) is essentially the use of a considerable part of the cutting edge length to produce machined surface. This idea is not entirely new, because it has been very successfully used car engine cylinder head valve seat insert. However, as the world's first and currently only for the successful development of monolithic finishing pcbn grades cbn100 and plunging the idea to expand into other applications. Integral cbn100 the economy is good a lot, such as a triangular blade is plunging provide six cutting edges, which makes the product insert for lathe turning technology and tradition are very satisfactory.

Compared with conventional hard turning, the main advantage is to shorten cycle times, probably between 75-90%. Figure 2 shows the basic principle of interpolation car.

The process relies on a number of key factors: First, to obtain a good surface roughness and the longest tool life, the quality of the blade cutting edge is very important. It is also to improve the cutting speed and reduce the amount of feed required. This reduces the cutting force, to ensure excellent dimensional accuracy. In order to maintain the dimensional accuracy, cutting the last 2-3 turn, the blade allow air feed. To avoid affecting the surface contour of the cutting edge roughness, it made a small axial movement. With the application of these technologies and have a good machine configuration to obtain high consistency of surface roughness and precision of the parts is feasible. In gear turning, plug the car has been used in the manufacture of tooth surface and cone synchromesh. Has been working with pcbn plunging the maximum length is 16 mm.