Results 271 to 280 of about 93,060 (311)

Rigidity of high-speed motor spindles

Werkstatt und Betrieb, 1999
Rigidity of high-speed motor spindles. The most relevant factors for the static operational rigidity of motor spindles were analysed, and the finite element method was used for calculating the effects of configuration, type, prestress and heat-up of bearings as well as of the temperature range of the spindle nose on the operational rigidity of motor ...
Goja, Željko, Husnjak, Mirko, Cebalo, Roko   +2 more
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Stabilizing Chatter by Automatic Spindle Speed Regulation

CIRP Annals, 1992
Summary This paper describes the theoretical basis behind a system for the elimination of chatter in milling through the automatic regulation of the spindle speed. This technique is most effective in milling operations where the tooth passing frequency can approach the natural frequency of the mode responsible for chatter.
S. Smith, J. Tlusty
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Effects of Spindle Speed on Turning Stability

Volume 4: Dynamics, Control and Uncertainty, Parts A and B, 2012
Machining stability study for rough cuts suggests that low speeds impart instability. However, bifurcated states could be staged in between with increasing speeds. Therefore it cannot be concluded that speed increase would always result in stability. Using the cutting model presented in [1] and [2], critical DOCs are seen to increase with the increase ...
Achala V. Dassanayake, C. Steve Suh
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Robust Modeling of High Speed Spindle Dynamics

Manufacturing Science and Engineering: Volume 1 — Material Removal and Surface Modification Issues in Machining Processes; Mechatronics for Manufacturing; Computer-Aided Tooling, 1995
Abstract Advances in high-speed machining create the need to model spindle-bearing performance at high rates of rotation. Spindle analysis, design, and control requires a complex representation of the dynamics of stepped shafts rotating at high speeds and supported by flexible non-linear bearings.
Bert R. Jorgensen, Yung C. Shin
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Spindle Speed Variation for the Suppression of Regenerative Chatter

Journal of Nonlinear Science, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sri Namachchivaya, N., Beddini, R.
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Stability-based spindle speed control during flexible workpiece high-speed milling

International Journal of Machine Tools and Manufacture, 2008
Abstract High-speed machining (HSM) is a technology used to increase productivity and reduce production costs. The prediction of stable cutting regions represents an important issue for the machining process, which may otherwise give rise to spindle, cutter and part damage.
I. Mañé, V. Gagnol, B.C. Bouzgarrou, P. Ray   +3 more
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Zoom Synchrosqueezing Transform for Instantaneous Speed Estimation of High Speed Spindle

Materials Science Forum, 2016
Instantaneous speed (IS) is of great significance of fault diagnosis and condition monitoring of the high speed spindle. In this paper, we propose a novel zoom synchrosqueezing transform (ZST) for IS estimation of the high speed spindle. Due to the limitation of the Heisenberg uncertainty principle, the conventional time-frequency analysis (TFA ...
Song Tao Xi, Hong Rui Cao, Xue Feng Chen
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High Speed Milling Vibration Surveillance with Optimal Spindle Speed Based on Optimal Speeds Map

Key Engineering Materials, 2013
The paper presents the method of the surveillance of the self-excited chatter vibration. At first, the workpiece modal parameters are estimated based on experimental data which leads to verification of computational model. Then, for selected surface points optimal spindle speeds are calculated.
Krzysztof J. Kalinski, Marek A. Galewski, Michał R. Mazur   +2 more
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22—THE ACCURATE MEASUREMENT OF SPINDLE SPEED

Journal of the Textile Institute Transactions, 1933
(1933). 22—THE ACCURATE MEASUREMENT OF SPINDLE SPEED. Journal of the Textile Institute Transactions: Vol. 24, No. 5, pp. T207-T211.
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Design of the High-Speed-Spindle Motor

2012
As explained in Sects. 1.2 and 1.3 of the thesis Introduction, the PhD project started within the Dutch Microfactory framework with the goal of development of a built-in electrical spindle drive which would facilitate high rotational speed of the spindle and accurate micro-milling.
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