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RISAn Accurate Method for Determining Cutter-Workpiece Engagements in Five-Axis Milling With a General Tool Considering Cutter Runout
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Cutter runout is universal and inevitable in milling process and has a direct impact on the shape of the in-process geometry. However, most of the works on the cutter-workpiece engagement (CWE) extraction neglect the cutter ...
Mechanistic Modeling of Five-Axis Machining With a Flat End Mill Considering Bottom Edge Cutting Effect
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In five-axis milling, the bottom edge of a flat end mill is probably involved in cutting when the lead angle of tool axis changes to negative. The mechanistic model will lose accuracy if the bottom edge cutting effect is ...
Eigenvalue Assignment for Control of Time Delay Systems Via the Generalized Runge–Kutta Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an eigenvalue assignment method for the timedelay systems with feedback controllers. A new form of Runge–Kutta algorithm, generalized from the classical fourthorder Runge–Kutta method, is utilized ...
Numerical Integration Method for Stability Analysis of Milling With Variable Spindle Speeds
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A semianalytical method is presented in this paper for stability analysis of milling with a variable spindle speed (VSS), periodically modulated around a nominal spindle speed. Taking the regenerative effect into account, ...
Stability Analysis of Milling Processes With Periodic Spindle Speed Variation Via the Variable-Step Numerical Integration Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper proposes a general method for the stability analysis and parameter optimization of milling processes with periodic spindle speed variation (SSV). With the aid of Fourier series, the time-variant spindle speeds ...
Smooth Tool Path Optimization for Flank Milling Based on the Gradient-Based Differential Evolution Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flank milling is one of the most important technologies for machining of complex surfaces. A small change of the tool orientation in the part coordinate system (PCS) may produce a great rotation of the rotary axes of the ...
Dynamics and Stability Prediction of Five-Axis Flat-End Milling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The tool orientation of a flat-end cutter, determined by the lead and tilt angles of the cutter, can be optimized to increase the machining strip width. However, few studies focus on the effects of tool orientation on the ...
Stability Analysis of Milling Via the Differential Quadrature Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a timedomain semianalytical method for stability analysis of milling in the framework of the differential quadrature method. The governing equation of milling processes taking into account the regenerative ...
Patterns of Regenerative Milling Chatter Under Joint Influences of Cutting Parameters, Tool Geometries, and Runout
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The regenerative milling chatter is usually regarded as some kind of bifurcation or chaos behaviors of the machining system. Although several chatter patterns such as the secondary Hopf, the period doubling, and the cyclic ...
The Mechanism on Prediction of Transient Maximum Amplitude for Tuned and Mistuned Blisks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Blisks are subjected to frequent acceleration and deceleration, which leads to a transient forced response; however, there is limited understanding of this response. In this work, the mechanism on prediction of transient ...