EDM dressing of fine grain super abrasive grinding wheel

Optimisation of grit protrusion in the electro-discharge dressing process of large grit size CBN grinding wheels

“…Both rotary [17] and stationary [15,16] electrodes have been used. Stationary electrodes are a good choice because of their simplicity and low cost, specially when the wheel to be trued is cylindrical and the loss of electrode geometry due to wear is not a critical aspect.…”

“…The gap between wheel and electrode (graphite [10,[13][14][15][16], copper [14,16] or brass [15]) is occupied by a dielectric fluid that allows re-establishing the optimum conditions after each spark. Different dielectric fluids have been used: oil [10], emulsions [12][13][14][15], compressed air and no fluid [13]. The process has been applied mainly to diamond wheels of small grit size (up to 4000# [15]), which are used for super-finishing operations.…”

“…Different dielectric fluids have been used: oil [10], emulsions [12][13][14][15], compressed air and no fluid [13]. The process has been applied mainly to diamond wheels of small grit size (up to 4000# [15]), which are used for super-finishing operations. Some studies have been done on the application of the process to large (120# [17]) grit size diamond wheels, but loss of the sharp edges of the grits has been observed due to graphitisation.…”

On-machine wire electrical discharge dressing (WEDD) of metal-bonded grinding wheels

“…However, most applications of this dressing method are carried out in EDM machines [18][19][20][21][22][23], not being integrated on grinding machines. In these cases, standard EDM dielectric liquids like hydrocarbon oil and de-ionized water are used.…”

Prediction of wear and surface roughness in electro-discharge diamond grinding

“…Choudhury et al [5] did experimental work on EDDG to find the effect of current, voltage pulse-on time and duty factor on material removal rate and grinding forces. Wang et al [6] focused in the truing effects of EDM and the micro-geomorphic analysis of fine grain super abrasive grinding wheel surface after EDM dressing. Jain and Mote [7] carried out experimentation to investigate the temperature of the workpiece and specific energy during * Corresponding author.…”