Application of continuous spindle speed variation for chatter avoidance in roughing milling

Bediaga, Iñigo; Zatarain, Mikel; Muñoa, Jokin; Lizarralde, Rafael

doi:10.1177/2041297510394075

Cited by 20 publications

(19 citation statements)

References 24 publications

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“…To suppress the regenerative chatter described above, sinusoidal spindle speed variation (SSV) is employed extensively in the tuming [23][24][25] and the milling [26][27][28]. In the research on external cylindrical grinding, Inasaki et al [29] first simulated the grinding process with a sinusoidal workpiece speed variation and concluded that this is an effective method to suppress the grinding chatter.…”

Section: Introductionmentioning

confidence: 99%

Suppression of Regenerative Chatter in a Plunge-Grinding Process by Spindle Speed

Yan¹,

2013

Journal of Manufacturing Science and Engineering

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This paper utilizes an effective control str-ategy to suppress the regenerative chatter in a plunge-grinding process. To begin with, the dynamical interaction between the workpiece and the grinding wheel is considered as a major factor influencing the grinding stability. Mathematically, the grinding stability is studied through numerical eigenvalue analysis. Consequently, critical chatter boundaries are obtained to distinguish the chatter-free and the chatter regions. As known, the grinding is unstable and the chatter happens in the chatter region. To observe the chatter vibrations, an analytical method and numerical simulations are employed. As a result, chatter vibrations both with and without losing contact between the wor'kpiece and the wheel are obtained. Meanwhile, the coexistence of the chatter and the stable grinding is also found in the chatter-free region. Finally, a control strategy involving spindle speed variation (SSV) is introduced to suppress the chatter. Then, its effectiveness is analytically investigated in terms of the method of multiple scales (MMS).

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Section: Introductionmentioning

confidence: 99%

Suppression of Regenerative Chatter in a Plunge-Grinding Process by Spindle Speed

Yan¹,

2013

Journal of Manufacturing Science and Engineering

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“…They noted that the SSSV did not influence the surface finish negatively even when it was applied during a stable turning operations. Bediaga et al, (2011) tested effectiveness of the continuous spindle speed variation (CSSV) technique as a chattersuppression strategy in the milling process. They proposed a stability map for different amplitude and frequency variations in order to optimize the parameter selection when machining.…”

Section: Other Methodsmentioning

confidence: 99%

Machining of Titanium Alloy(Ti-6Al-4V)—Theory to Application

Pramanik

Littlefair

2015

Machining Science and Technology

149

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This paper correlates laboratory based understanding in machining of titanium alloys with the industry based outputs and finds possible solutions to improve machining efficiency of titanium alloy Ti-6Al-4V. The machining outputs are explained based on different aspects of chip formation mechanism and practical issues faced by industries during titanium machining. This study also analyzed and linked the methods that effectively improve the machinability of titanium alloys. It is found that the deformation mechanism during machining of titanium alloys is complex and causes basic challenges, such as saw-tooth chips, high temperature, high stress on cutting tool, high tool wear and undercut parts. These challenges are correlated and affected by each other. Saw tooth-chips cause variation in cutting forces which results in high cyclic stress on cutting tools. On the other hand, low thermal conductivity of titanium alloy causes high temperature. These cause a favorable environment for high tool wear. Thus, improvements in machining titanium alloy depend mainly on overcoming the complexities associated with the inherent properties of this alloy.Vibration analysis kit, high pressure coolant, cryogenic cooling, thermally enhanced machining, hybrid machining and, use of high conductive cutting tool and tool holders improve the machinability of titanium alloy.

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“…This technique is based on the introduction of a perturbation in the spindle speed command. There are different methods for varying the spindle speed, including sinusoidal [35][36][37][38], triangular [39], rectangular [31], random [40], or continuous linear perturbation [41]. The sinusoidal signal has emerged as the most efficient technique compared to random, rectangular, or triangular shapes.…”

Section: Continuous Spindle Speed Variation (Cssv)mentioning

confidence: 99%

Hybrid Edge–Cloud-Based Smart System for Chatter Suppression in Train Wheel Repair

et al. 2019

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The contact profile of a train wheel has a key role in its operation performance. Rolling smoothly and with reduced resistance results in an increase in the efficiency and safety of rail transport. The original shape and dimensions of the profile of the wheel are altered under operation of the train, especially due to braking events and the presence of external objects between the wheel and the railway. With the purpose of recovering the optimum contact profile, train wheels are periodically machined using special lathes. This repair operation is particularly critical in freight trains, which are only reshaped a few times throughout their service life and, therefore, high depths of cut are required to recover the wheel in a productive way. As the presence of chatter vibrations limits the productivity of these operations, a hybrid edge–cloud computing approach has been developed for chatter vibration suppression. An expert system based on automatic chatter detection and suppression has been developed in the edge. The expert system is based on continuous real-time vibration monitoring and combines continuous spindle speed variation (CSSV) and cutting speed reduction to suppress chatter. Cloud computing is used to extract wheel profile machining fingerprints and obtain insights from multiple aggregated machined wheels. An industrial implementation of the system is described in the present work.

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Application of continuous spindle speed variation for chatter avoidance in roughing milling

Cited by 20 publications

References 24 publications

Suppression of Regenerative Chatter in a Plunge-Grinding Process by Spindle Speed

Suppression of Regenerative Chatter in a Plunge-Grinding Process by Spindle Speed

Machining of Titanium Alloy(Ti-6Al-4V)—Theory to Application

Hybrid Edge–Cloud-Based Smart System for Chatter Suppression in Train Wheel Repair

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