<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The paper considers scientific principles of technological procedure development for the selection and assignment of parameters of velocity machining by blade tool at gear milling with due regard to the required parameters of the gear surface layer. Optimum micro-cutting conditions are determined when full participation in stock removal of all mill teeth is provided. Technological regulation of selection and setting of machining parameters is spread for gear hobbing of the spur gear wheels with fine-modular and coarse-modular hardness (220...320 HV) and after heat treatment (HRC46...63). Correlation with essential parameters of the surface layer, cutting depth, feed, speed and radius of rounding of the cutting edge of milling cutters’ teeth is established. It is scientifically grounded, tested, and proved at what modes of cutting, the radius of rounding of cutting edge of the cutting tool is made metal removal at oncoming and passing high-speed micro milling. The process of determining of minimal sliding angle, or maximum value (without the use of coolant and with coolant), in which there is no micro-cutting process taking into account variation of variable parameters of cutting conditions and geometrical parameters of hobbing cutters is modelled. For the first time, we ascertained the relation between the sliding angle and the maximum contact angle of the mill tooth with the work surface, which allowed determine the efficiency of the shaping process through coefficient (without coolant and with coolant).</p>
</abstract>

The paper considers scientific principles of technological procedure development for the selection and assignment of parameters of velocity machining by blade tool at gear milling with due regard to the required parameters of the gear surface layer. Optimum micro-cutting conditions are determined when full participation in stock removal of all mill teeth is provided. Technological regulation of selection and setting of machining parameters is spread for gear hobbing of the spur gear wheels with fine-modular and coarse-modular hardness (220...320 HV) and after heat treatment (HRC46...63). Correlation with essential parameters of the surface layer, cutting depth, feed, speed and radius of rounding of the cutting edge of milling cutters’ teeth is established. It is scientifically grounded, tested, and proved at what modes of cutting, the radius of rounding of cutting edge of the cutting tool is made metal removal at oncoming and passing high-speed micro milling. The process of determining of minimal sliding angle, or maximum value (without the use of coolant and with coolant), in which there is no micro-cutting process taking into account variation of variable parameters of cutting conditions and geometrical parameters of hobbing cutters is modelled. For the first time, we ascertained the relation between the sliding angle and the maximum contact angle of the mill tooth with the work surface, which allowed determine the efficiency of the shaping process through coefficient (without coolant and with coolant).

Scientific Basis for the Substantiation of Process Regulations for the Micro-Cutting of Hardened Gears

National Technical University “Kharkiv Polytechnic Institute”

National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering

Strojnícky časopis - Journal of Mechanical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The paper considers scientific principles of technological procedure development for the selection and assignment of parameters of velocity machining by blade...

Scientific Basis for the Substantiation of Process Regulations for the Micro-Cutting of Hardened Gears

Published Online: Nov 23, 2023

Page range: 83 - 92

DOI: https://doi.org/10.2478/scjme-2023-0023

Keywords
Cutting Conditions, Minimum Sliding Angle, Largest Cutter Tooth Contact Angle, Efficiency, Process Innovation

© 2023 Alexander Klochko et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Scientific Basis for the Substantiation of Process Regulations for the Micro-Cutting of Hardened Gears

Published Online: Nov 23, 2023

Page range: 83 - 92

DOI: https://doi.org/10.2478/scjme-2023-0023

KeywordsCutting Conditions, Minimum Sliding Angle, Largest Cutter Tooth Contact Angle, Efficiency, Process Innovation

© 2023 Alexander Klochko et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Cutting Conditions, Minimum Sliding Angle, Largest Cutter Tooth Contact Angle, Efficiency, Process Innovation