Regenerative chatter in self-interrupted plunge grinding

Yan, Yao; Xu, Jian; Wiercigroch, Marian

doi:10.1007/s11012-016-0554-4

Cited by 17 publications

(5 citation statements)

References 43 publications

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“…Chung et al [25] developed a nonlinear chatter model of the cylindrical transverse grinding process, which included two-time delays originating from the regenerative effects of the workpiece and the grinding wheel. Yan et al [26] employed DDEs and PDEs to investigate grinding self-interrupted chatter in cylindrical plunge grinding, in which a loss of contact between the workpiece and the grinding wheel occurred. Yan et al [27] considered the lateral and torsional workpiece movements in the cylindrical plunge grinding process and proposed a dynamic model that involved state-dependent time delays for regenerative effects.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Analysis of Grinding Stability of Beam Workpiece

Yao

2023

Processes

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Grinding chatter is a kind of self-excited vibration in which the grinding system continuously absorbs energy from the grinding machine, increasing the mechanical energy of the system. Grinding chatter can damage the surface of the workpiece and accelerate the abrasion of the grinding wheel. The theoretical analysis of the grinding chatter for the beam surface was launched based on the behavior of a single abrasive grain, whose cutting thickness is a key factor affecting grinding stability. The dynamic grinding force model has been developed, which is the interaction interface between the grinding wheel and the workpiece. In this paper, rail beam grinding was taken as an example. The vibration performance of the rail beam was described with the Timoshenko beam. The characteristics of the frequency domain of the grinding wheel-workpiece system were observed, and the condition of the stability at any position in the longitudinal direction of the beam was gained, which could be quantitatively characterized with the stability limit curve. The grinding experiments of the rail beam surface demonstrated that as chatter developed, the chatter marks could be investigated on the surface of the rail, and the energy of the chatter signal was mainly concentrated around the chatter frequency, which was higher than the natural frequency of the grinding wheel.

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Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Analysis of Grinding Stability of Beam Workpiece

Yao

2023

Processes

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“…Li and Shin [17,18] established several dynamic models for cylindrical grinding and then analyzed the chatter characteristics of grinding process. Yan et al [19][20][21][22][23][24][25] established corresponding dynamic models for various grinding processes and analyzed grinding stability and chatter characteristics.…”

Section: Introductionmentioning

confidence: 99%

Study on Vibration Characteristics of Polishing Rod for Polishing Aeroengine Blade with Abrasive Cloth Wheel

Xian

Shi

Lin

et al. 2020

Mathematical Problems in Engineering

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The vibration of grinding tools is very essential to the performance of parts and the safety of machine tools. However, the vibrationis rarely studied in the process of polishing aeroengine blade with abrasive cloth wheel. Polishing force is measured by dynamometer in the process of polishing aeroengine blade with abrasive cloth wheel, and the time-domain expressions of polishing force are obtained. Time-domain and frequency-domain vibration solutions of position at which the abrasive cloth wheel is installed under the coupling of axial force and normal force are obtained by the simulation method. The results show that the total displacement is approximately equal to the displacement in the normal direction. The frequency-domain characteristics of axial force and normal force are similar. The frequency-domain characteristics of vibration in x, y, and z directions are similar. The component frequencies of polishing force are not the same as the component frequencies of rod vibration, which means the vibration is not stable. The range of spindle speed to avoid resonance in polishing process is calculated.

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“…Cao et al [18] established a model by combining the relative micro-vibration between the grinding tool and the workpiece with the micro-interacting behavior of the active grains to determine the impact of the vibration amplitude, grit size and process parameters on surface generation in grinding. Actually, grinding marks caused by wheel vibration severely deteriorate accuracy and quality of the workpiece being ground, which are difficult to be removed by subsequent polishing process [19][20][21]. How to control and suppress the grinding marks is becoming a critical issue to optimize the grinding operation.…”

Section: Introductionmentioning

confidence: 99%

An experimental and theoretical analysis of surface generation in the ultra-precision grinding of hard and brittle materials

Chen

Cheung

Zhang

2018

Int J Adv Manuf Technol

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This paper presents an experimental and theoretical study of surface generation in ultra-precision grinding of hard and brittle materials. The study takes into account material properties, the relative vibration between the grinding wheel and the workpiece, machining parameters and the phase shift of the grinding process.The Taguchi approach is employed to study the influence of machining parameters on the surface quality and shows the feed speed and rotational speed of the workpiece are key factors. Experiments have been conducted to study individual variable and the results further show that the feed rate and the cross-feed distance have significant effect on the surface generation. It is found that the spirals around the central area of the workpiece are the primary mechanism for surface generation, which originates from the synchronous relative tool-work vibration. The integral part of the ratio of the rotational speed of the grinding wheel to rotational speed of the workpiece determines the number of the spirals and its fractional part controls the spiral geometry. A theoretical model for predicting the single spiral generation has been developed to explain the accumulation of the phase shift and the geometry. The changeable feed speed near the end of grinding is also modelled, revealing the approximate straight lines around one circle in the central region. The simulated results indicate the theoretical models and the ground surfaces are in close agreement. The scallop-height model is developed to calculate the influence of phase shift on surface quality and it is found that the phase shift near the medium value can effectively improve surface quality. Finally, a comparison for different surface generation mechanisms in grinding mould Steel, tungsten carbide (WC) and reaction bonded silicon carbide (RB-SiC) is investigated. It is interesting to note that the Spanzipfel effect contributes to the surface generation not only on ductile materials such as mould Steel but also on brittle materials such as WC and RB-SiC. The Spanzipfel effect is most significant in grinding mould Steel. For WC and RB-SiC, the ground surface contains both ductile region and brittle region in form of micro fracture.

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Regenerative chatter in self-interrupted plunge grinding

Cited by 17 publications

References 43 publications

Theoretical and Experimental Analysis of Grinding Stability of Beam Workpiece

Theoretical and Experimental Analysis of Grinding Stability of Beam Workpiece

Study on Vibration Characteristics of Polishing Rod for Polishing Aeroengine Blade with Abrasive Cloth Wheel

An experimental and theoretical analysis of surface generation in the ultra-precision grinding of hard and brittle materials

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