A Survey on Precision Grinding for Improved Product Quality

Hahn, R. S.

doi:10.1007/978-1-349-07529-4_1

Cited by 8 publications

(4 citation statements)

References 7 publications

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“…To define the heat flux to the grinding wheel, a partition ratio R ws of "workpiece -grinding wheel", which is independent of the heat to the chips and coolant, is introduced in Eq. 4 based on Hahn's model for a grain sliding on a workpiece with the grinding wheel speed v s [18].…”

Section: Heat Flux Calculationmentioning

confidence: 99%

FEM-Based Simulation of Temperature in Speed Stroke Grinding with 3D Transient Moving Heat Sources

Linke

Duscha

et al. 2011

AMR

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The grinding process is one of the most important finishing processes to obtain high surface quality. Nowadays, grinding is also considered as a high performance process with high material removal rates. Nevertheless, to avoid thermally-induced structural changes poses a major challenge for this manufacturing technology. Until now, the Finite Element Method (FEM) has been widely applied as a proper numerical technique to predict workpiece properties in machining processes. However, actual models in grinding are limited to conventional grinding processes with simple workpiece profiles and low table speeds. In this paper, finite element simulations are expanded to 3-dimensional (3D) models with temperature-dependent material properties and heat source profiles derived from experimental results, i.e. tangential forces. Both temperature simulation and measurement were conducted for deep grinding, pendulum grinding and speed stroke grinding in the table speed range of vw= 12 m/min to 180 m/min and specific material removal rates of Q’w= 40 mm³/mms. Overall, the simulation results show a good agreement with the measured temperature and surface integrity after grinding. This research indicates that a 3D FE model with temperature dependent material properties can predict realistic temperature fields in speed stroke grinding. Therefore, the experiment and measurement costs and time can be reduced by FEM simulation.

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Section: Heat Flux Calculationmentioning

confidence: 99%

FEM-Based Simulation of Temperature in Speed Stroke Grinding with 3D Transient Moving Heat Sources

Linke

Duscha

et al. 2011

AMR

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“…Creation of ground surface depends on not only grit shape and grinding kinematics, but also physical deformation during material removal. The grinding actions of a single abrasive grit classified as rubbing, ploughing and cutting three phases were first put forth by Hahn [1] and was called as a prevailing rubbing hypothesis [2]. The contribution of each of grinding action to ground surface creation depends on grinding conditions and associated physical phenomena.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Grinding Surface Creation – A Single Grit Approach

Chen

Öpöz

2010

AMR

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Abstract. The paper presents an investigation of grinding material removal mechanism using finite element method. Understanding of grinding removal mechanism relies on the investigation of material removal by each individual grain. Although some analytical formulations have been developed to predict and to quantify the machining events in grinding, they do not illustrate every stage of abrasive actions. Finite element analysis provides good facility to present details of physical behaviour in grinding. In this research, material removal mechanism of grinding, namely rubbing, ploughing and cutting, is discussed with the variation friction coefficient. The major emphasis here is on the ploughing. Total force variation exerted during indention and sliding of a grain is also presented along its path.

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“…In 1942, J. C. Jaeges [1] presented firstly the analytic solution for moving source of heat in uniform speed and temperature at sliding contacts on the half-infinite surface, and in 1952 Outwater and Shaw [2] modeled the heat source for heat transferring into workpiece based on the heat source theory of shear plane. Hahn [3] put forward the theory of heat generated from the ware plane of grains, on which the heat was described precisely by considering the force on the wear plane and ignoring the force on the shear plane. Malkin [4] discovered the actual length of heat source was as 2-3 times as geometric contact length.…”

Section: Introductionmentioning

confidence: 99%

Experiment Research on Temperature Field in Ultrasonic Assisted Grinding Engineering Ceramics

Gao

Liu

Zhao

et al. 2007

KEM

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As one of the key factors grinding heat has a significant effect on the ground surface quality in grinding engineering ceramics using diamond grinding wheel. Differences between mechanical and physical performances of ceramic materials and grinding parameters have important influences on the surface temperature distribution. In the present research, experiments with/without ultrasonic assistance were carried out to study the temperature characteristics in the grinding field by thermocouple in grinding ZrO2 and Al2O3 engineering ceramics respectively. Moreover, the theoretical analysis and the experiment confirmation for the relationship between grinding parameters and temperature have been discussed. The results show that the further the heat source keeps against grinding surface, the lower the peak value of temperature, and the surface temperature increases with the grinding depth, grinding speed and work table speed. According to the results of orthogonal experiments on grinding parameters, the grinding depth is the most important factor affecting the grinding temperature on the workpiece surface.

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A Survey on Precision Grinding for Improved Product Quality

Cited by 8 publications

References 7 publications

FEM-Based Simulation of Temperature in Speed Stroke Grinding with 3D Transient Moving Heat Sources

FEM-Based Simulation of Temperature in Speed Stroke Grinding with 3D Transient Moving Heat Sources

Simulation of Grinding Surface Creation – A Single Grit Approach

Experiment Research on Temperature Field in Ultrasonic Assisted Grinding Engineering Ceramics

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