Abstract:  In order to overcome the weak conductivity of non-metal bond, a method that smears the wheel surface using conductivity medium was used. Experiments on dressing resin bonded diamond grind wheels were carried out on a diesinking electrical discharge machine. The influences of different electrical parameters on wheel dressing efficiency were studied. The diamond wheel topographies before and after electrical discharge dressing were observed by VH-800 three dimension digital microscope. The wheel profiles before and after dressing were observed. The results of electrical discharge dressing under different electrical parameters were compared. 

Key words:  non-metal bonded diamond wheel; , air medium；electrical discharge；truing and dressing