Ural Federal University, Nizhny Tagil Institute of Technology (branch), Nizhny Tagil, Russia
V. F. Pegashkin, Dr. Eng., Prof., Head of the Dept. of General Engineering, e-mail: v.f.pegashkin@urfu.ru

In order to improve the service properties of rolling rolls, new roller materials are constantly being sought, such as hypereutectoid steels, bleached cast irons, wear-resistant alloys characterized by high hardness and wear resistance. Their machinability is difficult, which prevents the introduction of rolling rolls made of such materials in mills. Improving the processing technology of rolling rolls, determining alternative processing methods, conducting a comparative analysis to identify the most productive processing method is always an important problem. There is a traditional method of processing rolling roll streams: roughing the profile with a groove cutter; forming the profile with a shaped cutter; final processing with a passing cutter on a copying machine or on a CNC machine. The disadvantage of this scheme is the low productivity and low durability of the cutting tool. The use of milling allows to intensify the processing of complex and large-sized parts. Rough profile formation is possible when processing with a disc cutter. The milling cutter forms a groove in one or two turns, depending on the depth of the profile. The roughing of the profile is similar when processing with an end mill. The application of long–edged cutters with a tooth formed by a set of plates arranged along a helical line (milling cutter “corn”) is considered - a tool for high-performance roughing. The technological processes of processing rolling rolls using milling cutters as cutting tools are determined, the performance of each of the processing technologies is compared and the most promising one is recommended. It was found that when processing a part by milling, productivity can increase by 2,1 – 4,2 times compared with the traditional roll processing method - turning.

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