The Influence of Abrasive Grit Morphology on Wheel Topography and Grinding Performance

Palmer, Jack; Curtis, David; Novovic, Donka; Ghadbeigi, Hassan

doi:10.1016/j.procir.2018.09.005

Cited by 12 publications

(6 citation statements)

References 11 publications

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“…Hitchiner et al showed the influence of grit properties and bond strength when grinding with cBN grits of variable toughness under fixed dressing conditions [9]. Palmer et al evaluated different engineered-shape grains with conventional abrasives under various dressing conditions [10] and found that an elongated grit generates the largest workpiece R a surface roughness, which they attributed to an increased penetration depth. While the research about the influence of grit and bond properties on grinding performance is clear, particularly with regard to grit wear, little work has been done on how these same properties influence the grinding-wheel topography, which is the fundamental causal mechanism for differences in grinding performance.…”

Section: Introductionmentioning

confidence: 99%

“…While the effect of dressing parameters on wheel sharpness and grinding outputs has been well researched for a given grit-bond combination, the effect of grit type, bond type, grit properties and bond properties on dressing action has not. Indeed, different bonds and grit and bond properties all react differently to a given set of dressing conditions [10]. Therefore, one of the main objectives of this work is to develop an assessment framework for evaluating the performance of grinding wheels that can capture the effects of grinding wheel topography, with a special focus on the influence of grit type, grit properties and dressing conditions.…”

Section: Introductionmentioning

confidence: 99%

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The effects of grit properties and dressing on grinding mechanics and wheel performance: Analytical assessment framework

Macerol

Franca

Dražumerič

et al. 2022

International Journal of Machine Tools and Manufacture

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effects of grit properties and dressing on grinding mechanics and wheel performance: Analytical assessment framework

Macerol

Franca

Dražumerič

et al. 2022

International Journal of Machine Tools and Manufacture

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“…Surface Roughness Rz (m) The results from Figure 16 suggest that the flood grinding, MQL-PO, MQL-MG, and MQL-Al 2 O 3 modes generate relatively higher average values of surface roughness when compared to dry grinding mode. Palmer et al [44] reported that grinding tool topography has a critical impact on ground surface, with the differences between various tool topographies causing the variation in surface responses. The tool topography for flood grinding mode showed new cutting edges generated by the formation of wedge-shaped fractures (Figure 6), which produced uneven ground surface that increased the values of surface roughness.…”

Section: Grinding Surface Qualitymentioning

confidence: 99%

Tool Wear Mechanism and Grinding Performance for Different Cooling-Lubrication Modes in Grinding of Nickel-Based Superalloys

Liang

Gong

Zhou³

et al. 2023

Materials

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Tool wear introduced during grinding nickel-based superalloys was identified as a significant factor affecting the production quality of aero-engine industries concerning high service performance and high precision. Moreover, uncertainties derived from the various cooling-lubrication modes used in grinding operations complicated the assessment of grinding preformation. Therefore, this work investigated the tool wear mechanisms in grinding nickel-based superalloys that adopted five cooling-lubrication modes and investigated how the wear behaviors affected grinding performance. Results showed that chip-deposits covered some areas on the tool surface under dry grinding and accelerated the tool failure, which produced the highest values of tangential force, 7.46 N, and normal force, 14.1 N. Wedge-shape fractures induced by indentation fatigue were found to be the predominant wear mechanism when grinding nickel-based superalloys under flood cooling mode. The application of minimum quantity lubrication-palm oil (MQL-PO), MQL-multilayer graphene (MQL-MG), and MQL-Al2O3 nanoparticles (MQL-Al2O3) formed lubricity oil-film on the tool surface, which improved the capacity of lubrication in the tool–workpiece contact zone and provided 37%, 30%, and 52% higher coefficient of friction than dry mode, respectively. The results of this study demonstrate that lubricated oil-film produced by MQL modes reduces the possibility of fractures of cubic boron nitride (CBN) grits to some extent.

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“…But even so, the well-trained model is still hardly adaptive to a new life cycle of the wheel due to the diverse uncertainties in the dressing process of grinding wheel. 26 Initial topography of wheel and the degradation of grinding performance are different for different life cycles, even if the same dressing parameters are adopted.…”

Section: Introductionmentioning

confidence: 99%

Tracking changes in grinding wheel condition using reduced features of acoustic emission signals

Liu

Zhou

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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In this paper, a universal method is proposed to accurately identify wheel state during grinding brittle materials. In contrast with conventional methods relying on adequate repetitive experimental data under the same process conditions, only history acoustic emission (AE) data in the same life cycle of a grinding wheel are needed for current wheel state identification. During grinding process, AE spectra samples are acquired sequentially on a series of nodes with equal interval. Samples on each node are categorized into the same class of wheel state. In the theoretical part, AE spectrum is proved to be suitable for feature representation of the degradation of wheel condition. Linear discriminant analysis is used to project AE spectra samples into a two-dimensional feature space, and the changes of the projection gives a clue to the evolution of wheel state. Two types of commonly used diamond wheels for optical surface grinding, which are straight wheel and cup wheel, were used to verify the general applicability of the method. The experiments were carried out on different machine tools and the two wheels also possessed different degradation process, yet for all of them, the evolution of wheel state can be accurately identified. It was proved that the proposed method can adaptively trace wear stage change of diamond grinding wheel.

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The Influence of Abrasive Grit Morphology on Wheel Topography and Grinding Performance

Cited by 12 publications

References 11 publications

The effects of grit properties and dressing on grinding mechanics and wheel performance: Analytical assessment framework

The effects of grit properties and dressing on grinding mechanics and wheel performance: Analytical assessment framework

Tool Wear Mechanism and Grinding Performance for Different Cooling-Lubrication Modes in Grinding of Nickel-Based Superalloys

Tracking changes in grinding wheel condition using reduced features of acoustic emission signals

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