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vibration grinding machines crystal
A new two-dimensional ultrasonic assisted grinding (2D
The obtained results show that: (1) compared with conventional grinding, the axial ultrasonic vibration results in greatest improvement in the work surface quality Guo et al. used ultrasonic vibration-assisted grinding to machine linear micro-structured surface. The experimental results show that ultrasonic vibration-assisted grinding can effectively reduce the Study on Grinding Force of Two-Dimensional
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A grinding force model in two-dimensional ultrasonic-assisted grinding
In this study, a discrete numerical model is proposed for two-dimensional ultrasonic-assisted grinding (2D-UAG) of silicon carbide (SiC) to describe the dynamic Li et al. [17] conducted an ultrasonic vibration assisted mill-grinding system for fabricating single crystal 6H–SiC materials. The results showed that compared with Ultrasonic vibration mill-grinding of single-crystal silicon
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Research on Grinding Force of Ultrasonic
In this paper, the comparative experimental study of ultrasonic vibration-assisted grinding and common grinding of C/SiC composites is carried out; the variation laws of grinding force and Abstract: Ultrasonic vibration-assisted grinding (UVAG) technology, by superposing high-frequency and micro-amplitude ultrasonic vibration on the conventional 机械工程学报-年, 第卷, 第期
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Grinding of Single-Crystal Silicon Using a Microvibration
PDF This paper presents experimental results of grinding of single-crystal silicon using a microvibration device and a diamond grindingwheel.This study presents an approach to extra-hard material removal using "medium-frequency vibration-assisted grinding with self-sensing grinding force" for Microgroove grinding of monocrystalline diamond using medium-frequency
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Study on Grinding Force of Two-Dimensional Ultrasonic Vibration
The grinding force is an important index during the grinding process, which affects the surface quality and other aspects after machining. However, the research on the grinding force of ceramic matrix composites assisted by two-dimensional ultrasonic vibration-assisted grinding is very weak. In this paper, the impact of the relationship between the Combined with the material properties of crystal sapphire, a grinding force model considering the crystalline effects was proposed. The results indicated that the grinding forces of A-orientation were higher than those of the other two orientations and the number of crystal layers also played an important role in determining grinding forces.A grinding force model in two-dimensional ultrasonic-assisted grinding
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A comprehensive review of micro-grinding: emphasis on
Micro-grinding is a tool based mechanical micromachining process which is mostly applied to create and finish 3D micro-features on hard and brittle materials such as glass, silicon, alumina, etc. Miniature-sized abrasive tool comes in physical contact with the workpiece and removes the unwanted material with mostly nanometric undeformed chip Ultrasonic vibration–assisted grinding is an effective method for improving the surface quality of brittle and hard materials. The grinding force is one of the key factors affecting the surface quality of the machined surface, and this has been investigated both experimentally and theoretically. However, the influence of process parameters on Modeling of grinding force in longitudinal ultrasonic vibration
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Modelling of grinding mechanics: A review ScienceDirect
The three-dimensional geometric contour of the grinding wheel and workpiece are usually digitized by stylus instrument or optical sensing, 38, 39 and the macro geometric model of the grinding wheel can be obtained by combining contour elements. 40 Fig. 4 shows the kinematic equations of common grinding methods. Three traditional In the grinding process, the friction energy generated by grains and the workpiece in the grinding zone will affect the service life of the grinding wheel. Ultrasonic-vibration-assisted grinding (UVAG) can reduce the friction force and reduce the generation of friction energy during grinding. In this work, the wear mechanism of grinding wheels in Machines Free Full-Text Study of Diamond Wheel Wear
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Revealing nanoscale material deformation mechanism and
Ultrasonic vibration-assisted grinding (UVAG) has attracted plenty of attention to significantly improve surface integrity. However, existing research has not systematically investigated the effect of vibration directions during UVAG at atomic and nanoscales, limiting our understanding of the plastic deformation mechanisms and Subsurface damage (SSD) produced in a grinding process will affect the performance and operational duration of single-crystal silicon. In order to reduce the subsurface damage depth generated during the grinding process by adjusting the process parameters (added), experiments were designed to investigate the influence of Micromachines Free Full-Text The Influence of Crystal
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vibration grinding machines Chinese translation Linguee
Many translated example sentences containing "vibration grinding machines" Chinese-English dictionary and search engine for Chinese translations. 近十年来，全球范围内已共有5000多台埃马克倒置式车床、车削中心及多功能加工中心，1500台莱尼科、 卡斯藤Ultrasonic-assisted grinding processing can effectively reduce the surface roughness and enhance the processing efficiency in the processing of hard and brittle materials. However, the most common ultrasonic assisted grinding is a type of contact ultrasonic grinding where the grinding tool directly contacts the workpiece, which means Mechanism and Experiment Study of Non-Contact Ultrasonic Assisted Grinding
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A Mathematical Prediction Model of the Grinding Force in
As a typical ceramic material, zirconia (ZrO 2) is applied in biomedicine (Ref 1, 2), electronic equipment, and space technology because of its high hardness, low density, good thermal shock resistance, and oxidation resistance (Ref 3, 4).However, due to high hardness and brittleness (Ref 5), defects such as large and unstable grinding forces The grinding force is an important index during the grinding process, which affects the surface quality and other aspects after machining. However, the research on the grinding force of ceramic matrix composites assisted by two-dimensional ultrasonic vibration-assisted grinding is very weak. In this paper, the impact of the relationship between the Study on Grinding Force of Two-Dimensional Ultrasonic Vibration
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Machines Free Full-Text Conical Grinding Wheel Ultrasonic
The rotating ultrasonic-assisted grinding (RUAG) experiment of the conical grinding wheel generated the intermittent pit-shaped micro-texture on the surface of the workpiece, reducing thermal damage and improving the lubrication characteristics compared with conventional grinding (CG). To further optimize the surface properties, this paper This study used a forming grinding wheel to machine an involute spur gear with ultrasonic vibration applied to the gear in order to improve the gear processing technology and enhance the gear processing effect. Conventional grinding and ultrasonic vibration-assisted forming grinding gear (TUVA-FGG) tests were carried out. The effects Tangential Ultrasonic-Vibration Assisted Forming Grinding
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Wenfeng DING Professor. Ph.D. Nanjing University
Ultrasonic vibration-assisted grinding (UVAG) is a highly effective technique for improving the grindability of difficult-to-cut materials, making it widely applicable in various industrial fieldsIn this study, ductile to brittle transition in ultra-micro-grinding (UMG) of hard brittle material is investigated. The characteristics of UMG process are studied, and differences between UMG and micro-grinding (MG) are investigated. The grain penetration depth considering rotary deviation is calculated, grain invalid cutting phenomenon is Ductile to brittle transition in ultra-micro-grinding (UMG) of
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Ultrasonic vibration assisted grinding of hard and brittle
Grinding with diamond wheels is a stringent requirement for precision and efficient manufacturing of these hard-to-machine micro-structured surfaces. F. Klocke et al. [2] investigated the diamond grinding of a micro cylinder array on cemented carbide. Ultrasonic vibration mill-grinding of single-crystal silicon carbide for pressure sensorIn order to meet the P2-grade bearing grinding requirements, we designed a high-speed internal grinding machine to be used for grinding bearing raceways and inner circles. The machine has a T-type layout and a four-axis numerical control linkage. It is supported by hydrostatic pressure and driven directly by a torque motor. In addition, Design and Development of a High-Speed Precision Internal Grinding
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Processing and machining mechanism of ultrasonic vibration
However, it is difficult to machine it efficiently and precisely because of its brittleness and hardness. In this work, the processing and mechanism of machining sapphire using ultrasonic vibration-assisted grinding technology The relatively high vibration frequency used to machine the channel leads to a high strain rate, which helps produce an almost defect-free subsurface. Revealing nanoscale material deformation mechanism and surface/subsurface characteristics in vibration-assisted nano-grinding of single-crystal iron. Appl Surf Sci, 597 (2022), Article Material removal mechanism and subsurface ScienceDirect
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