A grinding force model and surface formation mechanism of cup wheels considering crystallographic orientation

Li, Gan; Kang, Renke; Wang, Hao; Dong, Zhigang; Bao, Yan

doi:10.1016/j.jmatprotec.2023.118187

Cited by 5 publications

(1 citation statement)

References 47 publications

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“…This study mainly concentrated on optimizing the parameters of the grinding process according to tangential UVAG, whereas the frictional effects were ignored in this work. Gan Li et al [28] established a flow stress model for a tungsten-heavy alloy (WHA) that considered strain hardening, strain rate hardening, and thermal softening effects. This model facilitates comprehension of the variances induced by the disparity between the two phases during the grinding process, thereby furnishing a theoretical foundation for achieving efficient and minimally detrimental grinding of WHA and analogous composite materials.…”

Section: Introductionmentioning

confidence: 99%

Micro-Grinding Parameter Control of Hard and Brittle Materials Based on Kinematic Analysis of Material Removal

Manea,

Lu,

Liu

et al. 2024

Mathematics

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This article explores the intricacies of micro-grinding parameter control for hard and brittle materials, with a specific focus on Zirconia ceramics (ZrO2) and Optical Glass (BK7). Given the increasing demand and application of these materials in various high-precision industries, this study aims to provide a comprehensive kinematic analysis of material removal during the micro-grinding process. According to the grinding parameters selected to be analyzed in this study, the ac-max values are between (9.55 nm ~ 67.58 nm). Theoretical modeling of the grinding force considering the brittle and ductile removal phase, frictional effects, the possibility of grit to cut materials, and grinding conditions is very important in order to control and optimize the surface grinding process. This research introduces novel models for predicting and optimizing micro-grinding forces effectively. The primary objective is to establish a micro-grinding force model that facilitates the easy manipulation of micro-grinding parameters, thereby optimizing the machining process for these challenging materials. Through experimental investigations conducted on Zirconia ceramics, the paper evaluates a mathematical model of the grinding force, highlighting its significance in predicting and controlling the forces involved in micro-grinding. The suggested model underwent thorough testing to assess its validity, revealing an accuracy with average variances of 6.616% for the normal force and 5.752% for the tangential force. Additionally, the study delves into the coefficient of friction within the grinding process, suggesting a novel frictional force model. This model is assessed through a series of experiments on Optical Glass BK7, aiming to accurately characterize the frictional forces at play during grinding. The empirical results obtained from both sets of experiments—on Zirconia ceramics and Optical Glass BK7—substantiate the efficacy of the proposed models. These findings confirm the models’ capability to accurately describe the force dynamics in the micro-grinding of hard and brittle materials. The research not only contributes to the theoretical understanding of micro-grinding processes but also offers practical insights for enhancing the efficiency and effectiveness of machining operations involving hard and brittle materials.

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Section: Introductionmentioning

confidence: 99%

Micro-Grinding Parameter Control of Hard and Brittle Materials Based on Kinematic Analysis of Material Removal

Manea,

Lu,

Liu

et al. 2024

Mathematics

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Grinding heat theory based on trochoid scratch model: establishment and verification of grinding heat model of trochoid cross-point

Zhao,

Lin,

Zhou

et al. 2024

Int J Adv Manuf Technol

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Grinding is an ultra-precision machining technology. The grinding force and grinding heat emerge as pivotal physical parameters. Excessive grinding temperature can engender unwarranted thermal damage to the processed material. In cup grinding wheel face grinding, employing a singular abrasive grain discrete heat source method enables a more precise establishment of the face grinding temperature field. Cross tracks of abrasive exist widely in cup grinding wheel, and the influence of cross point temperature should be considered in order to accurately establish the grinding temperature field model. Thus, a single-grain discrete point heat source superposition temperature field analytical model was established. Through trochoid feed scratch experiments, the variation law of thermal effect of cross points under different cutting depth is verified. The experimental findings reveal conspicuous changes in cutting force and cutting heat at the entry and exit positions of the scratch intersection region. Moreover, the abrasive grain scratch sustains more severe damage compared to other regions. The energy change caused by the impact effect is the key factor leading to the temperature change at the intersection. The energy lost at the entrance of the intersection position is close to the energy of the impact effect. With the increase of the cutting depth, the ratio of the two tends to converge towards 1, ranging from 0.868 to 0.932 to 0.965. The error between the theoretical model and experimental verification is less than 5%, indicating the singleparticle discrete heat source superposition temperature field model can well characterize the grinding surface temperature field caused by crosspoint effect, which lays a foundation for the grinding heat theory based on trochoid model.

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Undeformed chip thickness models for precise vertical - spindle face grinding of tungsten heavy alloy

Li,

Kang,

Wang

et al. 2024

Precision Engineering

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A grinding force model and surface formation mechanism of cup wheels considering crystallographic orientation

Cited by 5 publications

References 47 publications

Micro-Grinding Parameter Control of Hard and Brittle Materials Based on Kinematic Analysis of Material Removal

Micro-Grinding Parameter Control of Hard and Brittle Materials Based on Kinematic Analysis of Material Removal

Grinding heat theory based on trochoid scratch model: establishment and verification of grinding heat model of trochoid cross-point

Undeformed chip thickness models for precise vertical - spindle face grinding of tungsten heavy alloy

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