Improvement of manufacturability and endurance of percussion drill assemblies: Review and analysis of engineering solutions

One of the ways of improving performance and cost effectiveness of drilling machines is selection and justification of design parameters for the components of the percussion assemblies on the basis of the manufacturability and reliability standards. A percussive assembly is a critical converter of the impact energy to the useful energy of an impact momentum aimed at destruction. Certain geometry of colliding elements can only ensure an optimum impact momentum to best conform with the properties of an object being fractured. The choice and justification of such geometry should involve, among other things, optimization of manufacturability, which often ends in complexity and sometimes impossibility of using colliding elements having geometry more complex than a cylinder. An integral part of an impact assembly of a drilling machine is a rock-breaking tool. The design of the latter also has an influence on the efficient conversion of the impact energy to the useful energy of fracture. This article describes potentiality of analyzing rational geometry of impact assemblies with regard to their manufacturability standards and offers optional engineering solutions on the impact assembly components capable to ensure both increased productivity of drilling and reduction in financial and material expenses connected with manufacturing.

Keywords: drilling machine, impact, piston, waveguide, percussion assembly, piston geometry, drilling tool, drill bit, percussion assembly manufacturability.
For citation:

Teplyakova A. V., Azimov A. M., Alieva L., Zhukov I. A. Improvement of manufacturability and endurance of percussion drill assemblies: Review and analysis of engineering solutions. MIAB. Mining Inf. Anal. Bull. 2022;(9):120-132. [In Russ]. DOI: 10.25018/0236_ 1493_2022_9_0_120.

Acknowledgements:
Issue number: 9
Year: 2022
Page number: 120-132
ISBN: 0236-1493
UDK: 62-24
DOI: 10.25018/0236_1493_2022_9_0_120
Article receipt date: 25.03.2022
Date of review receipt: 07.07.2022
Date of the editorial board′s decision on the article′s publishing: 10.08.2022
About authors:

A.V. Teplyakova1, Student, e-mail: teplyakovanu@mail.ru,
A.M. Azimov1, Graduate Student, e-mail: amirkhon.azimov@yandex.ru, ORCID ID: 0000-0002-4062-0584,
L. Alieva1, Graduate Student, e-mail: leylasha.1997@mail.ru,
I.A. Zhukov1, Dr. Sci. (Eng.), Assistant Professor, Professor, e-mail: tmmiok@yandex.ru, ORCID ID: 0000-0001-9068-3201,
1 Saint-Petersburg Mining University, 199106, Saint-Petersburg, Russia.

 

For contacts:

I.A. Zhukov, e-mail: tmmiok@yandex.ru.

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