New Technology Embraced by OKB MIKRON

The new technique is designed to use the full technology potential of the D800Z centre, significantly reduce processing time and increase the economic efficiency of batch manufacturing of parts.

In the context of productivity increase, one of the important tasks was to decide on a method of M36 threading in three holes of the SKM 10.45.01.002 shroud, which is associated with many factors. These included structural dimensions, the degree of accuracy required, the type of material to be processed, the tool productivity, and costs.

Currently, M36 is threaded by machine taps on a drilling machine using special tooling, i.e. a compensating cartridge. This operation takes 25 to 40 minutes on average. In the case of the tap breaking off inside the hole (which sometimes occurs), it may take even more time.

Meanwhile, in global practice, thread milling is becoming increasingly common, corresponding to thread cutting by screw milling. This method is distinguished by better performance, accuracy and processing quality, an ability to process certain types of threads and implementation on different types of equipment. It allows facilitating the process, minimizing the number of tools, reducing operating time and making production more flexible and efficient.

In the course of further review and calculations, the leaders in the thread cutting speed by screw milling were identified: Vargus – 4.5 minutes, Emuge Franke – 2.3 minutes and, finally, Walter's tool with a processing speed of three holes in one minute. A distinctive feature of this tool is the ability to feed about 248 millimetres per minute to mill the entire depth of the hole in two takes. At the same time, tool costs of processing one shroud is 26 rubles.

Applying this tool will make it possible to reduce thread cutting time by more than 30 times compared to the current method, to save economic and labor resources of the enterprise considerably, to reduce the production costs. And all this is accompanied by improvement of the quality of product manufacturing.