COMPARATIVE ANALYSIS OF SOME TRADITIONAL AND NON-TRADITIONAL CUTTING SCHEMES IN THE TURNING PROCESS
Authors:   Technical University of Varna, Department of Manufacturing Technologies and Machine Tools,
1 Studentska Str., 9010 Varna, Bulgaria, Vasileva Dimka , Avramova Tanya ,   Technical University of Varna, Department of Manufacturing Technologies and Machine Tools,
1 Studentska Str., 9010 Varna, Bulgaria, Rusev Svilen ,   Technical University of Varna, Department of Manufacturing Technologies and Machine Tools,
1 Studentska Str., 9010 Varna, Bulgaria
Published: January 2025

In response to the increased demand for optimized mechanical processing in order to process difficult-to-cut materials, increasing of productivity, improving the quality of machined workpieces and reducing the temperature in the cutting zone, the topics related to non-traditional (unconventional) cutting schemes in lathe machine processing are getting more interesting and actual for studying. Unconventional turning is widely used in the automotive industry, aerospace industry, medical equipment, electronics and other industries where the processing of hard, difficult-to-machine materials is required, as well as obtaining low roughness and high processing productivity. Unconventional turning process refers to the processes of machining materials that do not follow traditional turning methods. This may involve the use of specialized tools, different techniques or not widely used materials. Although non-traditional cutting schemes in the turning process are not as widespread or standardized as traditional lathe cutting schemes, they are increasingly being used in a variety of fields and applications. Unconventional (non-traditional) cutting schemes can be used for processing of workpieces that are difficult or impossible to manufacture using standard turning schemes. The problems related to the high requirements for the needed quality of the processed workpieces and the needed of the low-cost parts impose the need for changes in the processing methods and application of unconventional cutting schemes in production processes. These changes lead to solve the problems in unconventional turning, which is a broad term covering a variety of part processing techniques and methods. Unconventional turning uses new technologies, innovations and advances in manufacturing processes. Its focus is on the processing of difficult-to-cut materials and the processing of parts with high quality requirements at the same time low cost. When using non-traditional cutting schemes, in addition to the advantages, the disadvantages must also be considered in order to evaluate the real positives of introducing non-traditional (unconventional) cutting schemes. In this article, unconventional and conventional cutting schemes in the turning process are presented. After analyzing and comparison of the unconventional and conventional cutting schemes, their advantages and disadvantages are given. In the comparative analysis, an unconventional cutting scheme for turning parts with a simultaneously rotating tool and part was considered, in which it is possible to improve the quality parameters of the workpiece and heat distribution during processing of the parts.