A tuned holder for increased boring bar dynamic stiffness

Houck, Lonnie; Schmitz, Tony L.; Smith, Scott

doi:10.1016/j.jmapro.2010.09.002

Cited by 28 publications

(7 citation statements)

References 18 publications

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“…Chatter detection is based on the application of single or multisensor systems installed on the machine tool and on the development of special algorithms for in-process chatter identification [4,5]. Vibration reduction or chatter suppression strategies aim at increasing the dynamic stiffness of the machining system (defined as the product of equivalent stiffness k and damping x) or changing its main natural frequency by using passive dampers [6][7][8][9] or feedback-controlled actuators [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Development of a practical model for selection of stable tooling system configurations in internal turning

Sortino

Totis

Prosperi

2012

International Journal of Machine Tools and Manufacture

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Section: Introductionmentioning

confidence: 99%

Development of a practical model for selection of stable tooling system configurations in internal turning

Sortino

Totis

Prosperi

2012

International Journal of Machine Tools and Manufacture

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“…Houck III et al [101] tuned a holder for turning by varying the axial position of a sleeve. The modification of the tool-dynamics using dynamic vibration absorbers (DVA), tunable vibration absorbers (TVA) or tuned mass damper (TMD) have the purpose of increase the chatter boundaries.…”

Section: Passive Chatter Suppression Techniquesmentioning

confidence: 99%

“…The funding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results. [101][102][103][104][105] 5 Active techniques for chatter avoidance [106][107][108][109][110][111][112][113][114][115] 10…”

Section: Conflicts Of Interestmentioning

confidence: 99%

Prediction Methods and Experimental Techniques for Chatter Avoidance in Turning Systems: A Review

et al. 2019

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The general trend towards lightweight components and stronger but difficult to machine materials leads to a higher probability of vibrations in machining systems. Amongst them, chatter vibrations are an old enemy for machinists with the most dramatic cases resulting in machine-tool failure, accelerated tool wear and tool breakage or part rejection due to unacceptable surface finish. To avoid vibrations, process designers tend to command conservative parameters limiting productivity. Among the different machining processes, turning is responsible of a great amount of the chip volume removed worldwide. This paper reports some of the main efforts from the scientific literature to predict stability and to avoid chatter with special emphasis on turning systems. There are different techniques and approaches to reduce and to avoid chatter effects. The objective of the paper is to summarize the current state of research in this hot topic, particularly (1) the mechanistic, analytical, and numerical methods for stability prediction in turning; (2) the available techniques for chatter detection and control; (3) the main active and passive techniques.

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“…e experimental results showed that the process stability mainly depends on the ratio of the boring bar overhang to the diameter. Houck et al [9] designed a tuned holder working as a DVA. By matching the natural frequency of the holder to the natural frequency of the boring bar, the stability of the boring bar was increased.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Vibration Characteristics of a Boring Bar with a Variable Stiffness Dynamic Vibration Absorber

Sun

Hua

2019

Shock and Vibration

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Boring bars are widely used in deep hole machining. Due to the low stiffness of the long cantilever boring bar, vibration often occurs in the boring process. Vibration suppression can permit higher productivity and a better surface finish. To improve the performance of boring operations, a variable stiffness dynamic vibration absorber (DVA) is added inside the boring bar to reduce the vibration. The stiffness of the DVA is provided by two rubber bushes placed inside the DVA. By changing the axial compression, the stiffness of the DVA can be adjusted to accommodate different excitation frequencies. By establishing the relationship between the stiffness of the DVA and the axial compression of the rubber bush, the optimal stiffness for different excitation frequencies can always be found. A boring experiment is conducted, and the results show that, by selecting a reasonable axial compression, the vibration of the boring bar can be effectively suppressed.

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A tuned holder for increased boring bar dynamic stiffness

Cited by 28 publications

References 18 publications

Development of a practical model for selection of stable tooling system configurations in internal turning

Development of a practical model for selection of stable tooling system configurations in internal turning

Prediction Methods and Experimental Techniques for Chatter Avoidance in Turning Systems: A Review

Analysis of the Vibration Characteristics of a Boring Bar with a Variable Stiffness Dynamic Vibration Absorber

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