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RISFinite Element Model Updating of Machine Tool Spindle Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The unknown joint dynamics are the main obstacle that limits the accuracy of the finite element (FE) model of a machinetool spindle assembly. In this paper, an FE model updating method is proposed to assist industrial ...
A New Dynamic Model of Ball-Bearing Rotor Systems Based on Rigid Body Element
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Ball-bearing rotor systems are key components of rotating machinery. In this work, a new dynamic modeling method for ball-bearing rotor systems is proposed based on rigid body element (RBE). First, the concept of RBE is ...
Pose-Dependent Cutting Force Identification for Robotic Milling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Cutting force identification is critical to improving industrial robot performance and reducing machining vibration. However, most indirect identification methods of cutting force are not applicable since the modal parameters ...
Dynamic Modeling of Aerostatic Spindle With Shaft Tilt Deformation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a new dynamic model of aerostatic spindle including the journal and thrust bearings. Reynolds equations are used to model the dynamics of a 4-degree-of-freedom (DOF) aerostatic journal bearing and a ...
Dynamic Modeling and Vibration Response Simulation for High Speed Rolling Ball Bearings With Localized Surface Defects in Raceways
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A dynamic model is developed to investigate vibrations of high speed rolling ball bearings with localized surface defects on raceways. In this model, each bearing component (i.e., inner raceway, outer raceway and rolling ...
A General Method for the Dynamic Modeling of Ball Bearing–Rotor Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A general dynamic modeling method of ball bearing–rotor systems is proposed. Gupta's bearing model is applied to predict the rigid body motion of the system considering the threedimensional motions of each part (i.e., ...
A Dynamic Modeling Approach for Spindle Bearing System Supported by Both Angular Contact Ball Bearing and Floating Displacement Bearing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a new dynamic modeling approach for spindle bearing system supported by both angular contact ball bearing (ACBB) and floating displacement bearing (FDB). First, a dynamic model of FDB is developed based ...
A Frequency Shift Synchrosqueezing Method for Instantaneous Speed Estimation of Rotating Machinery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Instantaneous speed (IS) measurement is crucial in condition monitoring and realtime control of rotating machinery. Since the direct measurement of instantaneous rotating speed is not always available, the vibration ...
Time-Varying Chatter Frequency Characteristics in Thin-Walled Workpiece Milling With B-Spline Wavelet on Interval Finite Element Method
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: As the most significant material removal method, milling plays a very important role in the manufacturing industry. However, chatter occurs frequently in milling, which will seriously affect the production efficiency. The ...
Dynamic Force Identification in Peripheral Milling Based on CGLS Using Filtered Acceleration Signals and Averaged Transfer Functions
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Dynamic milling forces have been widely used to monitor the condition of the milling process. However, it is very difficult to measure milling forces directly in operation, particularly in the industrial scene. In this ...