FRICTION ANALYSIS IN CASE OF THE CARRIAGE- FEED SHAFT CINEMATIC COUPLING AT CNC LATHE
DOI:
https://doi.org/10.29121/ijetmr.v7.i5.2020.671Keywords:
Friction Analysis, Carriage, Feed Shaft, Cinematic Coupling, CNC Lathe, Routh-Hurwitz CriterionAbstract
The paper presents a mathematical model for analysis of friction between the tool bearing saddle and conductor at CNC lathe. The analysis of longitudinal advance movement laws is performed taking into account the appearance and development of disturbing harmonic forces created by auto-vibrations determined by the interaction between the partial elastic systems of tool and workpiece. The friction force is emphasized as product of two components depending on the sliding speed and on the normal disturbing force. By establishing the dynamic response of the system, when the normal force depends linearly on speed, acceleration and mobile ensemble position, the premises are created for stability analysis of the friction movement, obtaining the limit speeds under which the stick-slip phenomenon occurs. Thus, it is provided for a rational design of CNC lathe elastic structure, in order to improve the surface quality and the dimensional precision.
Downloads
References
Kudinov V.A. – Dinamiceskii rasciotî stankov, Maşinostroenie, nr.8, 1995.
Karaghelskii I.V., Ghitis N.V. – Fricţionarâe avtokolebaniia, M. Nauka, 1987.
J. Dietrich, Micro-mechanics of Slip Instabilities with Rate- and State- dependent Friction, Eos, Trans. Am. Geophys. Union, Fall Meeting Abstract Volume, pag.324, 1991.
P. Dupont and E. Dunlop, Friction Modeling and Control in Boundary Lubrication, American Control Conference, San Francisco CA, June, pag.1910-1914, 1993.
C. Ispas and D. Popescu, Mathematical model for dynamic analysis of the saddle-conductor cinematic coupling, XXV National Conference on Solid Mechanics, Brasov, 1998.
D. Popescu and C. Ispas, Stability analysis of the sliding process between the components of the saddle-conductor coupling at internal grinding machines, XXV National Conference on Solid Mechanics, Brasov, 1998.
Downloads
Published
How to Cite
Issue
Section
License
License and Copyright Agreement
In submitting the manuscript to the journal, the authors certify that:
- They are authorized by their co-authors to enter into these arrangements.
- The work described has not been formally published before, except in the form of an abstract or as part of a published lecture, review, thesis, or overlay journal.
- That it is not under consideration for publication elsewhere.
- That its release has been approved by all the author(s) and by the responsible authorities – tacitly or explicitly – of the institutes where the work has been carried out.
- They secure the right to reproduce any material that has already been published or copyrighted elsewhere.
- They agree to the following license and copyright agreement.
Copyright
Authors who publish with International Journal of Engineering Technologies and Management Research agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License (CC BY-SA 4.0) that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors can enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or edit it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) before and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
For More info, please visit CopyRight Section