Temperature field model in surface grinding: a comparative assessment

Abstract

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.

Design and optimization of fluid lubricated bearings operated with extreme working performances—a comprehensive review

“…Increasingly high working speeds have intensified surface friction between the components of bearing structures, causing sharp rises in heat production. Together with the environmental temperature, such thermal effects [283] non-negligibly degrade the mechanical properties of bearings. Due to their limited bearing clearance, LLBs are especially sensitive to radial expansion induced by large centrifugal forces and thermal distortion.…”

Improving fatigue properties of normal direction ultrasonic vibration assisted face grinding Inconel 718 by regulating machined surface integrity

“…The increase in compressive σ res was attributed to ultrasonic vibration enhancing squeezing effect [42] and work-hardening degree [43] in GAL. Additionally, the high-frequency separation of the abrasive grain from the workpiece led to a reduction in grinding temperature, thereby decreasing the tensile σ res induced by thermal effects [44,45]. Given that the penetration depth of x-ray was generally 20 µm, the surface σ res measured by XRD was the average value within 0-20 µm from the ground surface.…”

Digital Twins Enabling Intelligent Manufacturing: From Methodology to Application

“…The DT model serves as the core and foundation of the DT system. A multitude of studies are model-driven and complemented by the development of virtual systems [84][85][86][87][88]. Research on DT-driven modeling of mechanical process systems can be summarized as the resolution of the underlying problem, the requirements of the modeling methodology, and the evaluation of the model [89].…”