Theoretical and experimental analysis of temperature distribution during full tooth groove form grinding

Jiao, Yi; Jin, Tan; Zhou, Wei; Deng, Zhaohui

doi:10.1016/j.jmapro.2020.08.011

Cited by 36 publications

(5 citation statements)

References 23 publications

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“…Essentially, the temperature field resulting from the moving heat source theory is determined by solving the temperature field of an instantaneous point heat source in an infinitely large object at any given time after a certain amount of heat is instantaneously released [125][126][127][128][129]. By considering the grinding process as a continuous distribution of heat sources, this approach enables the calculation of the temperature distribution across the interface between the workpiece and the grinding wheel.…”

Section: Uniform Continuous Temperature Fieldmentioning

confidence: 99%

Temperature field model in surface grinding: a comparative assessment

Yang,

Kong,

et al. 2023

Int. J. Extrem. Manuf.

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Grinding is a crucial process in machining workpieces because it plays a vital role in achieving the desired precision and surface quality. However, a significant technical challenge in grinding is the potential increase in temperature due to high specific energy, which can lead to surface thermal damage. Therefore, ensuring control over the surface integrity of workpieces during grinding becomes a critical concern. This necessitates the development of temperature field models that consider various parameters, such as workpiece materials, grinding wheels, grinding parameters, cooling methods, and media, to guide industrial production. This study thoroughly analyzes and summarizes grinding temperature field models. First, the theory of the grinding temperature field is investigated, classifying it into traditional models based on a continuous belt heat source and those based on a discrete heat source, depending on whether the heat source is uniform and continuous. Through this examination, a more accurate grinding temperature model that closely aligns with practical grinding conditions is derived. Subsequently, various grinding thermal models are summarized, including models for the heat source distribution, energy distribution proportional coefficient, and convective heat transfer coefficient. Through comprehensive research, the most widely recognized, utilized, and accurate model for each category is identified. The application of these grinding thermal models is reviewed, shedding light on the governing laws that dictate the influence of the heat source distribution, heat distribution, and convective heat transfer in the grinding arc zone on the grinding temperature field. Finally, considering the current issues in the field of grinding temperature, potential future research directions are proposed. The aim of this study is to provide theoretical guidance and technical support for predicting workpiece temperature and improving surface integrity.

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Section: Uniform Continuous Temperature Fieldmentioning

confidence: 99%

Temperature field model in surface grinding: a comparative assessment

Yang,

Kong,

et al. 2023

Int. J. Extrem. Manuf.

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“…Consequently, the thermocouple’s response time in recording the grinding temperature for this application aligned with the stipulated requirements. Other application fields of grindable thermocouples can be found in the grinding of gears [ 13 , 32 ]. In both cases, the maximum temperatures and thermal gradients are much lower than those found in conventional grinding.…”

Section: Introductionmentioning

confidence: 99%

Accurate Measurement of Temperatures in Industrial Grinding Operations with Steep Gradients

Pombo,

Sánchez,

Martin

et al. 2024

Sensors

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Due to the continuously growing demands from high-added-value sectors such as aerospace, e-mobility or biomedical bound-abrasive technologies are the key to achieving extreme requirements. During grinding, energy is rapidly dissipated as heat, generating thermal fields on the ground part which are characterized by high temperatures and very steep gradients. The consequences on the ground part are broadly known as grinding burn. Therefore, the measurement of workpiece temperature during grinding has become a critical issue. Many techniques have been used for temperature measurement in grinding, amongst which, the so-called grindable thermocouples exhibit great potential and have been successfully used in creep-feed grinding operations, in which table speed is low, and therefore, temperature gradients are not very steep. However, in conventional grinding operations with faster table speeds, as most industrial operations are, the delay in the response of the thermocouple results in large errors in the maximum measured value. In this paper, the need for accurate calibration of the response of grindable thermocouples is studied as a prior step for signal integration to correct thermal inertia. The results show that, if the raw signal is directly used from the thermocouples, the deviation in the maximum temperature with respect to the theoretical model is over 200 K. After integration using the calibration constants obtained for the ground junction, the error can be reduced to 93 K even for feed speeds as high as 40 m/min and below 20 K for lower feed speeds. The main conclusion is that, following the proposed procedure, maximum grinding temperatures can be effectively measured using grindable thermocouples even at high values of table speed.

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“…The grinding fluid in the heat exchange zone of the LSG-GW exerts convective heat exchange on the grinding surface to carry away the heat generated in the contact area. However, the calculation of convective heat transfer coefficient, which can characterize the strength of heat transfer capacity in the grinding arc, has been the focus and difficulty of research [25][26][27][28] . In addition, in terms of heat transfer performance, the latest research findings show that when the grinding fluid is ejected from the nozzle and continues to flow by inertia, the speed is gradually reduced.…”

Section: Introductionmentioning

confidence: 99%

Study on flow field and convective heat transfer characteristics in grinding zone of large spiral angle flow disturbance grooved wheel

Mao,

Liu,

Jiang

et al. 2023

Int J Adv Manuf Technol

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In view of the high specific removal energy, high heat generation rate, low heat transfer efficiency, easy to produce local high temperature and grinding burns, new macrostructured grinding wheel forms were proposed, namely, Large Spiral-angle Grooved Grinding Wheels (LSG-GW, β>85°) and Large Spiral-angle flow Disturbance Grooved Wheels (LSDG-GW). Considering the influence of wheel parameters, groove parameters and process parameters, an analytical model of the airflow field in the wedge area and contact area of LSG-GW was established. Analytical model of gas-liquid two-phase flow field and theoretical model of convective heat transfer coefficient distribution in heat transfer channels were established.The results showed that increasing the groove width, groove depth and the spiral angle can reduce the pressure of the flow field in the air barrier layer and make it easier for the grinding fluid to enter the grinding contact area. The LSDG-GW further reduces the grinding fluid back flow and side flow intensity, proving that the flow disturbance structure can bring in more grinding fluid into the grinding contact area. A theoretical model for the distribution of convective heat transfer coefficient in the grinding contact area was derived, and the analysis results proved that the flow disturbance structure can significantly improve the convective heat transfer coefficient in the grinding contact area. The LSDG-GW, as a new macro surface structured grinding wheel, has a very promising application in the high efficiency and high precision grinding process of difficult-to-machine alloy materials.

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Theoretical and experimental analysis of temperature distribution during full tooth groove form grinding

Cited by 36 publications

References 23 publications

Temperature field model in surface grinding: a comparative assessment

Temperature field model in surface grinding: a comparative assessment

Accurate Measurement of Temperatures in Industrial Grinding Operations with Steep Gradients

Study on flow field and convective heat transfer characteristics in grinding zone of large spiral angle flow disturbance grooved wheel

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