— Ultrasonic vibration-assisted grinding is a processing method suitable for grinding hard and brittle materials, which can effectively reduce the roughness of the ground surface. ... Technology Program of Shanghai, China (Grant No. 20ZR1462800) and in part by the National Natural Science Foundation of China (Grant No. 52105468). …

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 — The present paper employed ultrasonic vibration-assisted grinding (UAG) to machine 2.5D woven SiO 2f /SiO 2 composites. By comparing the grinding force, surface microstructure, chip formation, surface topography and surface roughness with and without ultrasonic vibration for the machining of SiO 2f /SiO 2 composites, the feasibility of UAG …

 — Elliptic ultrasonic vibration-assisted grinding has been proven to be a high-efficiency machining technique for some brittle materials. This paper aims to investigate the chip generating characteristics in grinding of brittle materials with vertical elliptic vibration assistance. Vertical elliptic ultrasonic vibration-assisted grinding for precision machining …

 — A mechanistic model for cutting force in ultrasonic-vibration-assisted grinding (UVAG) (also called rotary ultrasonic machining) of brittle materials is proposed for the first time. Fundamental assumptions include: (1) brittle fracture is the dominant mechanism of material removal, and (2) the removed volume by each diamond grain in …

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 — Ultrasonic assisted grinding (UAG) is an outstanding technology suitable to machine advanced ceramics. During UAG, the effect of ultrasonic vibration on grinding process is mainly determined by matching performance between grinding and vibration parameters in theory. However, this problem is still lack of deep study. With an objective …

Vibration grinding machine is suitable for grinding medium-hard, hard, brittle and fibrous materials to the fineness required by analysis, which is considered to be quickly, …

 — Research into the single grain cutting mechanism is important for understanding complex grinding mechanisms. Based on the characteristics of ultrasonic vibration, the motion equation of the grain is established, and the generated trajectory is theoretically analyzed. By adopting the method of combining high-speed grinding …

 — The effects of machining parameters and ultrasonic vibrations on grinding forces, grinding temperature, grinding specific energy, and workpiece surface quality were discussed in detail. ... This work was financially supported by the National Natural Science Foundation of China (Nos. 92160301, 92060203, 52175415, and 52205475), the …

 — The surface residual stress of the parts has an important influence on their performance. The generation mechanism of surface residual stress in ultrasonic …

 — Three-dimensional (3D) ultrasonic vibration-assisted ELID grinding, which combines 3D ultrasonic vibration-assistance with electrolytic in-process grinding wheel dressing (ELID), is a compound process that is designed to achieve high-efficiency precision machining. A grinding force model of 3D ultrasonic vibration-assisted ELID …

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 — Ultrasonic vibration-assisted grinding (UVAG) combines ultrasonic vibration with conventional grinding (CG), reducing grinding forces and minimizing processing damage. ... This work was financially supported by the National Natural Science Foundation of China (Nos. 92160301, 92060203, 52175415, 52205475, and 52322510), the Science …

 — Abstract. To reveal the material removal mechanism of silicon carbide fiber reinforced silicon carbide ceramic matrix (SiCf/SiC) composites during the ultrasonic vibration helical grinding (UVHG) of hole-making process, a hole-making experiment of UVHG was conducted, and the contact behavior between a grain and different …

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 — In recent years, the ultrasonic grinding technology of hard and brittle materials has been developed rapidly [1,2,3].Ultrasonic grinding is the application of ultrasonic vibration on the grinding head or …

 — Ultrasonic vibration grinding differs from traditional grinding in terms of its material removal mechanism. The randomness of grain–workpiece interaction in ultrasonic vibration grinding can produce variable chips and impact the surface roughness of workpiece. However, previous studies used iterative method to calculate the unformed …

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Ultrasonic vibration-assisted grinding (UVAG) is a processing technology that combines ultrasonic vibration ... China 2 Nanjing Engineering Institute of Aircraft System, Nanjing 210016, China 3 Institute of Machinery Manufacturing Technology, China Academy of Engineering Physics, Mianyang 621000, China.

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 — Increases in running velocity and wheel-rail deterioration lead to excessive vibration and reduced ride comfort, which are common issues encountered in the operation of high-speed EMUs. While built-in sensors on a car body are able to detect abnormal vibrations in the car body itself, they cannot effectively reflect the ride comfort of …

covered that the grinding force in TUVAG is 13 N less than that in CG at the spindle speed of 2000 rpm. For the elliptical ultrasonic vibration, Zhang et al. [19] studied the material removal mechanism of SiC ceramic in elliptical ultrasonic vibration assisted grinding (EUVAG). Results showed that the grinding force ratio is 3.8 to 9.8 under

 — A medium-porosity microcrystalline corundum grinding wheel (Taishan Abrasives Co., Ltd. China) was chosen as the grinding tool. Before the experiment, ... This was due to the introduction of ultrasonic vibration, and grinding arc zone to get a better cooling heat transfer effect. At the same time, the abrasive particles produced …

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The surface roughness and the grinding force of ultrasonic vibration grinding decrease with the increase of grinding wheel linear speed and ultrasonic amplitude and the decrease of workpiece feed speed and grinding depth. ... Jiangsu, China; 3. RS Technology, Suzhou 215000, Jiangsu, China. More Information Rev Recd Date: 2020-03-20; Available ...

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