Simulation of Vitrified CBN Grinding Wheel Abrasive Wear Based on SPH

2011 ◽  
Vol 317-319 ◽  
pp. 498-502
Author(s):  
Jing Qiang Zhang ◽  
Peng Guan ◽  
Chong Su ◽  
Wan Shan Wang
Keyword(s):  
Abrasive Wear ◽  
Grinding Wheel ◽  
Wheel Wear ◽  
Wear Model ◽  
Wear Process ◽  
Grinding Wheel Wear ◽  
Smoothed Particle ◽  
Smoothed Particle Hydrodynamic ◽  
Cbn Grinding Wheel ◽  
Vitrified Cbn

This paper used spatial random cutting plane method for modeling the real irregular grain shapes, and method of smoothed particle hydrodynamic (SPH) was used to establish CBN grinding wheel abrasive wear model. In order to research the wear mechanism of CBN abrasive and the relationships between grinding parameters and grinding wheel wear, simulation of the wheel abrasive wear process was simulated by the LS-DYNA explicit dynamics. According to the results obtained by simulation of abrasive wear model which has the same law with the actual wear abrasive, it is has realistic instructive significance to the actual grinding process of vitrified CBN grinding wheel.

The Grinding Mechanism on Quick-Point Grinding Wheel Wear and Effects on Surface Quality

2009 ◽  
Vol 416 ◽  
pp. 370-374 ◽  
Author(s):  
Ya Dong Gong ◽  
Jian Qiu ◽  
Yu Jiao Liu ◽  
Jun Cheng ◽  
Fan Xu
Keyword(s):  
Wear Rate ◽  
Great Influence ◽  
Wheel Speed ◽  
Grinding Wheel ◽  
Cutting Depth ◽  
Wheel Wear ◽  
Wear Model ◽  
Wear Process ◽  
Grinding Wheel Wear ◽  
Grinding Mechanism

A study on the wear of Quick-point grinding wheel was carried on. The wheel wear was found having great influence on grinding performance and grinding quality. After analyzed the wear process and mechanism in Quick-point grinding, it was found the wear rate was directly related to some factors such as wheel width, workpiece speed, feed rate and Quick-point grinding angle, and it was indirectly affected by wheel speed and cutting depth. By means of some wear criteria, the wheel wear was able to be predicted. Furthermore, a wear model in wheel’s accurate area has been built up.

scholarly journals An Analysis of Electroplated cBN Grinding Wheel Wear and Conditioning during Creep Feed Grinding of Aeronautical Alloys

Metals ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 350 ◽  
Author(s):  
Gorka Vidal ◽  
Naiara Ortega ◽  
Héctor Bravo ◽  
Mirentxu Dubar ◽  
Haizea González
Keyword(s):  
Grinding Wheel ◽  
Wheel Wear ◽  
Grinding Wheel Wear ◽  
Creep Feed Grinding ◽  
Creep Feed ◽  
Cbn Grinding Wheel

Modeling Wear Process of Electroplated CBN Grinding Wheel

2015 ◽  
Author(s):  
Tianyu Yu ◽  
Ashraf F. Bastawros ◽  
Abhijit Chandra
Keyword(s):  
Life Expectancy ◽  
Cubic Boron Nitride ◽  
Grinding Wheel ◽  
Type Model ◽  
Wheel Wear ◽  
Modeling Framework ◽  
Workpiece Material ◽  
Wear Process ◽  
Workpiece Interaction ◽  
Cbn Grinding Wheel

The wear of Cubic Boron Nitride (CBN) grinding wheel directly affects the workpiece surface integrity and tolerances. This paper summarizes a combined experimental-modeling framework for CBN grinding wheel life expectancy utilized in both cylindrical and surface grinding. The presented fatigue type model is based on grit pullout mechanism and the associated state of damage percolation. The unique grit-workpiece interaction process leads to a non-uniform spatial distribution of the grit wear. The life expectancy model can be described as a function of the process parameters, grinding wheel geometry and topology, workpiece material properties, etc. The developed modeling framework will greatly enhance the understanding of electroplated CBN grinding wheel wear mechanism.

A Study on the Evaluation Indexes of Wear Process of Electroplated CBN Grinding Wheel

2018 ◽  
Vol 940 ◽  
pp. 72-76
Author(s):  
Fang Quan ◽  
Zhi Tong Chen ◽  
Qian Tong Li ◽  
Huan Ye
Keyword(s):  
Service Life ◽  
Evaluation Index ◽  
Grinding Wheel ◽  
Analytic Hierarchy ◽  
Wear Process ◽  
Evaluation Indexes ◽  
Nickel Based Superalloy ◽  
And Control ◽  
Service Life Cycle ◽  
Cbn Grinding Wheel

The wear process of electroplated CBN grinding wheel is difficult to predict and control because of the lack of unified evaluation index of wear degree. This paper investigates the service life cycle of electroplated CBN grinding wheel in grinding of nickel-based superalloy GH4169. The evolution of topography of grinding wheel, diameter of grinding wheel, grinding force and surface roughness are tracked in the wear process. Using the analytic hierarchy process (AHP), the optimal evaluation index of service life of electroplated CBN grinding wheel is proposed.

Factors Influencing the Performance of Grinding Wheels

1959 ◽  
Vol 81 (3) ◽  
pp. 187-199 ◽  
Author(s):  
E. J. Krabacher
Keyword(s):  
Metal Removal ◽  
Removal Rate ◽  
Grinding Wheel ◽  
Metal Removal Rate ◽  
Grinding Wheels ◽  
Wheel Wear ◽  
Grinding Wheel Wear ◽  
Grinding Ratio ◽  
Material Hardness ◽  
Chip Load

Optimum utilization of grinding wheels can best be achieved if the nature of their performance and wear characteristics, and the factors that affect these characteristics, are understood and applied. As reported in this paper, a comprehensive, continuing, grinding-research program has contributed to such an understanding. A study of the nature of grinding-wheel wear indicates that the grinding-wheel wear curve is similar to those of other cutting tools. It demonstrates further that the type of grinding operation significantly affects the nature of wheel wear. A unique technique has been developed for very accurately measuring grinding-wheel wear. This measured wear may be translated into terms of “grinding ratio,” which is the generally accepted parameter for measuring wheel wear. It is the ratio of the volume of metal removed per unit volume of wheel worn away. Extensive studies have been carried out to determine the effect of mechanical variables on grinding ratio, power required in metal removal, and on surface finish. Experimental findings indicate that grinding ratio decreases with increased metal-removal rate and increases with workpiece diameter, decreased chip load, and increased concentration of grinding fluid. Power is found to increase with both the metal-removal rate and the amount of metal removed. It increases slightly with workpiece diameter and is affected little by work-material hardness. Surface finish is found to improve with decreased metal-removal rate and decreased chip load. It also is affected little by work diameter or work-material hardness. Fundamental research in the mechanics of wheel wear is supplying much additional information in the study of grinding-wheel wear. The measurement of grinding forces employing a cylindrical grinding dynamometer provides the opportunity for relating the wear of grinding wheels to the basic mechanics of the process through such fundamental quantities as grinding forces, specific energy, and grinding friction. Two additional experimental techniques for the study of chip formation in grinding have also proved to be most useful research tools. A “quick-stop” apparatus is used to freeze the grinding action by accelerating a tiny workpiece almost instantaneously to grinding-wheel speed. Another technique permits the comparison of the shape of the grinding grit and that of the contour of its path through the workpiece by a unique replicating method.

Modal Analysis as a Means of Researching the Vibrations in Grinding

2015 ◽  
Vol 756 ◽  
pp. 15-18
Author(s):  
Dmitrii V. Ardashev
Keyword(s):  
Close Correlation ◽  
Operating Conditions ◽  
Grinding Wheel ◽  
Sufficient Information ◽  
Main Role ◽  
Wheel Wear ◽  
Grinding Wheel Wear ◽  
Working Surface ◽  
Processed Material ◽  
General Scale

During the grinding process the main role is played by the vibrating phenomena caused by primary imbalance of a wheel, features of its structure, and also the existence of a component arising in the general scale of vibrations and caused by the change of the structure of a working surface of a grinding wheel, wear of its working abrasive grains during the process. Intensity and amount of wear of the grinding wheel depends on conditions of grinding operation – kind of grinding, processed material, etc. In turn, the existence of close correlation connection between parameters of vibrations and modes of grinding allows to assume, that vibrating processes possess sufficient information and can form the basis for an assessment and forecast the perfection factor of a grinding wheel directly in operating conditions.

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