Experimental Study on Dry Electrical Contact Discharge (ECD) Dressing Parameters of Coarse Diamond Grinding Wheel

Lu, Yanjun; Xie, Jianhe; Wu, K.K.; Cheng, Jun; Cheng, Lefeng

doi:10.4028/www.scientific.net/amr.797.746

Cited by 1 publication

(1 citation statement)

References 6 publications

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“…4,5 Electrolytic in-process dressing (ELID) is particularly suitable for precision grinding of metal binders, ultrafine granularity and ultra-hard grinding wheels, which solves the problem of continuous sharpness of metal ultrafine ultra-hard grinding wheels, but it is less efficient. 6,7 In this case, the relevant scholars put forward to composite two or more in these finishing ways, being to help each other with respective advantages, such as electrospark-induced controllable combustion and turning dressing, 8 chemical–mechanical dressing, 9 dry electrical discharge-assisted dressing (dry-ECD), 10,11 grinding wheel mechanical dressed assisted by ultrasonic vibration, 12 laser-ultrasonic vibration synergic dressing, 13 EDM-chemical dressing, 14 EDM-ultrasonic vibration dressing, 15 ELID/EDM dressing, 16 ultrasound-assisted laser trepanning, etc. 17 These composite dressing methods improved wheel dressing efficiency and dressing quality, reduced the grinding wheel wear to some extent, but there were still some limitations, such as not being highly effective in process dressing, high processing cost, large energy consumption, etc.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of online dressing for micro-diamond grinding wheel during the ultrasound-aided electrolytic in-process dressing grinding

Fan

Mei

Zhao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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A high-precision continuous dressing technology, namely ultrasound-aided electrolytic in-process dressing method, was proposed in this paper, aiming at overcoming the difficulty in continuous dressing for fine diamond wheel during the super mirror processing, such as optics and aeronautics. Firstly, the influence of high-frequency ultrasonic vibration on electrolysis was analyzed on the basis of the mechanism of electrolysis. Then, the compared tests between the common electrolytic in-process dressing grinding and the ultrasound-aided electrolytic in-process dressing grinding of the grinding wheel were employed to observe the effect of dressing and the state of abrasive particle. It was found experimentally that under the latter dressing, the better dressing effect could be gained, and the number of abrasive particle per unit area, the sharpness of abrasive and the average grain protrude height were improved; meanwhile, the distribution of grains become more uniform. In addition, compared with the former dressing, the average distance between grains was decreased, and the microscopic roughness of grinding wheel physiognomy was increased in the latter dressing. Finally, the grinding experiment was carried out to illustrate the advantages of the ultrasound-aided electrolytic in-process dressing grinding. The experimental results revealed that the removal rate and machining surface quality were increased compared with the common electrolytic in-process dressing grinding.

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