Building a model of dressing the working surfaces of wheels during the two-side grinding of round end faces at CNC machines

Authors

DOI:

https://doi.org/10.15587/1729-4061.2022.252642

Keywords:

double-sided grinding, crossed axes, wheel dressing, diamond pencil

Abstract

This paper reports the spatial mathematical modeling of the process of dressing the working surface of grinding wheels for implementing the double-sided grinding of the ends of cylindrical components. Parts with high-precision end surfaces that are commonly used include bearing rollers, piston fingers, crosspieces of cardan shafts, and others. The geometric accuracy of surfaces is ensured by simultaneously grinding the ends at two-sided end-grinding machines with crossed axes of the part and wheels that operate under a self-blunting mode. Before starting the machining, the wheels are dressed in a working position. Moreover, the total orientation angle of the tools is selected subject to the condition of uniform distribution of allowance along the rough sections of wheels. Dressing involves a single-crystal diamond tool with a variable feed. That ensures different development of the surface of abrasive tools, which prolongs their operating time between dressings and improves overall stability. The constant size of micro irregularities at the calibration site enhances the quality of machining. The calibration site is made in the form of a straight line belonging to the plane that passes through the axis of rotation of the wheel and is perpendicular to the plane of the machined part. Based on the spatial mathematical models of the processes of removal of allowance and shape formation when dressing the wheel, the surface of the grinding wheel was investigated. Mathematical models for shaping the ends of parts when grinding with wheels with conical calibration sites have been proposed; it is shown that when applying the proposed machining scheme, there is no geometric error in the size of the part. In addition, due to the uniform distribution of the allowance along the rough area of the wheel, the quality of the surface layer of the ends of parts increases. The devised method for dressing the working surface of wheels could be used to grind the ends of non-circular components.

Author Biographies

Volodymyr Kalchenko, Chernihiv Polytechnic National University

Doctor of Technical Sciences, Professor

Department of Automobile Transport and Sectoral Machine Building

Vitalіі Kalchenko, Chernihiv Polytechnic National University

Doctor of Technical Sciences, Professor

Department of Automobile Transport and Sectoral Machine Building

Antonina Kolohoida, Chernihiv Polytechnic National University

PhD

Department of Automobile Transport and Sectoral Machine Building

Andrii Yeroshenko, Chernihiv Polytechnic National University

PhD

Department of Machine Building and Wood Processing Technologies

Dmytro Kalchenko, Genix Solutions Limited Liability Company

Programmer

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Published

2022-02-24

How to Cite

Kalchenko, V., Kalchenko, V., Kolohoida, A., Yeroshenko, A., & Kalchenko, D. (2022). Building a model of dressing the working surfaces of wheels during the two-side grinding of round end faces at CNC machines. Eastern-European Journal of Enterprise Technologies, 1(1 (115), 86–93. https://doi.org/10.15587/1729-4061.2022.252642

Issue

Vol. 1 No. 1 (115) (2022): Engineering technological systems

Section

Engineering technological systems

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Copyright (c) 2022 Volodymyr Kalchenko, Vitalіі Kalchenko, Antonina Kolohoida, Andrii Yeroshenko, Dmytro Kalchenko

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