25–26 Jun 2026
''Vasil Levski'' National Military University
Europe/Sofia timezone

RESEARCH ON THE QUALITY CHARACTERISTICS OF THE SURFACES OF HOLES IN GEAR BLANKS AFTER COMBINED MACHINING BY CUTTING AND SURFACE PLASTIC DEFORMATION

Not scheduled
20m
''Vasil Levski'' National Military University

''Vasil Levski'' National Military University

Veliko Tarnovo, Bulgaria
Paper – Poster Presentation Engineering Sciences and Production Technology

Speakers

Kiril Lengerov Desislava PetrovaProf. Angel Lengerov

Description

The continuous increase in requirements for the surface quality of elements in machine-building products, particularly gear transmissions, necessitates the improvement of machining and control methods. A major influence on the smoothness and noiseless operation of power transmissions is the correct selection of the method for machining the base holes of gears.
The methods currently known for final hole machining—such as countersinking, reaming, grinding, etc.—do not guarantee sufficient wear resistance. Consequently, during assembly with the shaft journals transmitting torque, they do not ensure the prescribed kinematic accuracy in gear transmissions.
This necessitates conducting research on the combined machining of holes in gear blanks and de-termining machining regimes that affect surface roughness and microhardness.

Keywords: kinematic accuracy, machining quality, surface machining.

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