Methods of experimental study of vibrational sequences during milling
Abstract
The milling process is always accompanied by noise, the source of which is, inter alia, the vibration of the tool relative to the workpiece. To study vibrational processes, a technique has been developed that includes the measurement of vibrational accelerations and their conversion into vibrational velocities and displacements. In addition, there is the problem of highlighting the regular component of vibrational displacements, which displays the basic properties of the surface formation. This removes the trend due to the uncertainty of the initial conditions and the errors of digital integration. In addition to the study of the vibrational structure of the observed sequences, it is proposed to use time sequences composed of stroboscopic Poincaré mappings. It is shown that the mathematical expectation from such sequences allows us to identify stationary trajectories of elastic deformation displacements of the tool relative to the workpiece. The presented article is devoted to the question of processing the vibrational sequence of the acceleration signal in such a way that it is convenient to use the information obtained when considering the process variety and the formed surface quality of the part.
- Publication:
-
XV International Scientific-Technical Conference "Dynamic of Technical Systems" (DTS-2019)
- Pub Date:
- December 2019
- DOI:
- 10.1063/1.5138399
- Bibcode:
- 2019AIPC.2188c0006G