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PARAMETRIC SELF-EXCITATION OF CUTTING DYNAMIC SYSTEM

https://doi.org/10.12737/1286

Abstract

The problem on stabilizing the toolpath generation relative to the workpiece taking into account the parametric self-excitation is considered. Factors causing the cyclic parameter variations in the cutting dynamic system are analyzed. These factors are related to the spatial anisotropy of elastic properties in the workpiece subsystem, allowance on workpiece rotation perimeter variations, kinematic perturbations from the drive hardware of the machine executive elements, and to the periodic processes in the cutting zone. The generic dynamic model of the periodic system is given. The effect of the periodically varying parameters on the path stability is studied. Buckling collapse features specific for cutting dynamic systems are disclosed. It is also shown that through the parametric actions, with increase in cutting speed under the spindle row growth, there always exists critical frequency at which the system loses its stability.

About the Authors

Vilor Lavrentyevich Zakovorotniy
Don State Technical University. Russia
Russian Federation


Pham Thu Huong
Don State Technical University. Russia
Russian Federation


References

1. Kudinov, V. A. Dinamika stankov. [Machine dynamics.] Moscow : Mashinostroyeniye, 1967, 367 p. (in Russian).

2. Zakovorotniy, V. L., Flek, M. B. Dinamika protsessa rezaniya. Sinergeticheskiy podkhod. [Cutting dynamics. Synergetic approach.] Rostov-on-Don : Terra, 2006, 876 p. (in Russian).

3. Zakovorotniy, V. L., et al. Sistemnyy sinergeticheskiy sintez upravleniya dinamikoy metal-lorezhushchikh stankov s uchetom evolyutsii svyazey. [System synergetic synthesis of cutting machine dynamics control with account for bond evolution.] Rostov-on-Don : DSTU Publ. Centre, 2008, 324 p. (in Russian).

4. Hartman, F. Obyknovennyye differentsialnyye uravneniya. [Ordinary differential equations.] Moscow : Mir, 1970, 720 p. (in Russian).


Review

For citations:


Zakovorotniy V.L., Huong P. PARAMETRIC SELF-EXCITATION OF CUTTING DYNAMIC SYSTEM. Vestnik of Don State Technical University. 2013;13(5-6):97-103. (In Russ.) https://doi.org/10.12737/1286

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ISSN 2687-1653 (Online)