Analysis of Grinding Surface Creation by Single-Grit Approach

Chen, X.; Öpöz, Tahsin Tecelli; Oluwajobi, Akinjide O.

doi:10.1115/1.4037992

Cited by 26 publications

(4 citation statements)

References 24 publications

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“…Furthermore, the material moves to the sides and forms the pile-up. During the third stage, the chip formation occurs as a result of continuous increase in the depth of the cut [7,8].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Geometrical Features of the Cutting Edges of Abrasive Grains on the Removal Efficiency of the Ti6Al4V Titanium Alloy

et al. 2022

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The shape of the cutting blades of the abrasive grains has an influence on the material separation process in the machining zone. The paper analyzes the influence of the geometrical parameters of the abrasive grains (rake angle γ, apex angle ε, opening angle α), as well as width bz and length bb of the cutting zone on the material removal efficiency. The material removal efficiency was determined taking into account the volume of the removed material VG and the volume of lateral piles-up VR. The analyses were carried out on the basis of the results of experimental and simulations using the finite element method. The relationship between the selected geometric parameters characterizing the cutting zone and the coefficient characterizing the efficiency of the material removal process was determined. A strong influence of the opening angle α as well as the width bz and length bb of the cutting zone on the material removal process by abrasive grain was demonstrated. It was observed that the wide cutting edge, and thus the large opening angle α of the grain, reduced the size of the pile-ups and more effectively removed the chip material.

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“…Furthermore, the material moves to the sides and forms the pile-up. During the third stage, the chip formation occurs as a result of continuous increase in the depth of the cut [7,8].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Geometrical Features of the Cutting Edges of Abrasive Grains on the Removal Efficiency of the Ti6Al4V Titanium Alloy

et al. 2022

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“…Chen et al [11] focused on the material removal mechanisms during single grain scratching and developed a threedimensional model with simplified CBN grain geometry to investigate the influencing parameters on the scratch geometry during rubbing, ploughing and cutting of EN8 steel. They showed that the grain geometry is one of the most influencing parameters on the material removal mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Approach to the numerical modelling of the chip temperatures in single grain scratching

Bergs

Röttger

Barth

et al. 2021

Prod. Eng. Res. Devel.

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To achieve a fundamental understanding of the physical mechanisms and the heat generation in the contact zone during grinding, a large number of experimental and numerical investigations have been carried out to analyse the interaction of single grain and workpiece. Existing numerical models of the interaction between grain and workpiece do not represent the reality and especially the influence of the three-dimensional grain geometry on the temperatures during single grain scratching with sufficient accuracy. An experimental validation of the simulated temperatures has not been carried out yet as there is no appropriate method to measure them in experimental investigations. In this study, a three-dimensional FE-model of the interaction between CBN-grain and workpiece (100Cr6) in the grinding process is presented. The model predicts the chip temperatures for real grain geometries to investigate the interactions between grain and workpiece. The experiments to validate the model were carried out using a ratio pyrometer.

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“…In order to model burr formation as a result of grain engagements, a description of the plastic material flow is needed taking process-specific engagement conditions into account. For instance, the amount of material displaced by the grain and its distribution to the left and right side of the engagement area is significantly influenced by process parameters such as the undeformed chip thickness and the cutting velocity, as well as by the shape of the respective grain (Öpöz and Chen, 2012;Chen et al, 2017). An advantage of the explicit modeling of individual grains in the GPS is the ability to evaluate these process parameters individually for each grain engagement.…”

Section: Modeling Of Burr Formationmentioning

confidence: 99%

Potentials of grinding process simulations for the analysis of individual grain engagement and complete grinding processes

Wiederkehr

Grimmert²,

Heining³

et al. 2023

Front. Manuf. Technol.

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Grinding processes are very complex due to the multitude of influencing parameters, resulting from the stochastic tool topography with numerous geometrically undefined abrasive cutting edges. Thus, the efficient design and optimization of these processes is a challenging task. Process simulations can be used as a flexible tool for analyzing interdependencies between several process parameters and identifying suitable process parameter values. For a precise process analysis, the choice of a process model with a corresponding model scale as well as the representation of optimization-relevant process effects are necessary. While macroscopic model approaches can be used to estimate the thermo-mechanical loads occurring in the contact zone, explicit modeling of the individual abrasive grains is required to predict the resulting surface topographies. In this paper, the use of simulation approaches for different scales for the analysis of different process parameters is discussed on the basis of selected application examples. The analysis of surface structuring in NC form grinding processes, e.g., was conducted by using an explicit geometric modeling of the individual abrasive grains in a geometric-physically based simulation approach to estimate wear-dependent resulting surface topographies. The parameterization of the empirical models used was based on numerical approaches for the detailed analysis of individual grain interventions. Using the complex production process of a turbine blade as an example, the utilization of a macroscopic simulation model for estimating the thermo-mechanical loads and the resulting temperatures in the workpiece during profile grinding processes is discussed.

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Analysis of Grinding Surface Creation by Single-Grit Approach

Cited by 26 publications

References 24 publications

Influence of the Geometrical Features of the Cutting Edges of Abrasive Grains on the Removal Efficiency of the Ti6Al4V Titanium Alloy

Influence of the Geometrical Features of the Cutting Edges of Abrasive Grains on the Removal Efficiency of the Ti6Al4V Titanium Alloy

Approach to the numerical modelling of the chip temperatures in single grain scratching

Potentials of grinding process simulations for the analysis of individual grain engagement and complete grinding processes

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