Experimental study on silica powder mixed electrical discharge dressing of coarse diamond grinding wheel

2022 ◽  
Vol 73 ◽  
pp. 748-756
Author(s):  
Longzhou Dai ◽  
Genyu Chen ◽  
Zizhao Shan
Keyword(s):  
Experimental Study ◽  
Electrical Discharge ◽  
Grinding Wheel ◽  
Silica Powder ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding ◽  
Electrical Discharge Dressing

Application of Fractal Theory in Electro-Discharge Dressing Diamond Grinding Wheel

2012 ◽  
Vol 430-432 ◽  
pp. 449-452
Author(s):  
Lan Rong Cai ◽  
Yang Li ◽  
Min Li
Keyword(s):  
Fractal Dimension ◽  
Surface Morphology ◽  
Simulation Model ◽  
Electrical Discharge ◽  
Fractal Theory ◽  
Grinding Wheel ◽  
Peak Current ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding ◽  
Electrical Discharge Dressing

Electrical discharge dressing and truing of diamond grinding wheel is a non-contact and non-traditional truing and dressing technology. In orde to help selecting optimized parameters under certain conditions such as peak current,etc.Fractal theory is application to set a electrical dischrge model .In this model,the fractal dimension ( ) is proportionately related to peak current( ) and pulse duration ( ).The actual dressing experiment was conducted to demonstrate the simulation model. There is a relationship between fractal dimension ( ) and the surface morphology of diamond grinding wheel.

Experimental Study on Porous Metal Bonded Diamond Grinding Wheels - The Selection of Porosity Inducers and Agglomeration’s Parameter

2011 ◽  
Vol 415-417 ◽  
pp. 594-597 ◽  
Author(s):  
Hua Xu ◽  
Cui Jiao Liao ◽  
Qing Ming Weng
Keyword(s):  
Experimental Study ◽  
Porous Metal ◽  
The Self ◽  
Grinding Wheel ◽  
Grinding Wheels ◽  
Porosity Structure ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding ◽  
Selection Of

To improve the self-sharpening ability and increase clearance for debris of metal bonded diamond grinding wheel, the porosity structure is applied to the diamond grinding wheel in this paper. By selecting different inducers diamond composites are burned under appropriate agglomeration condition. The experiment results indicate that diamond composites obtained through two certain inducers can meet both the demand of pore-creating and intensity, so can be used to make wheels. This conclusion lays a foundation for further study.

scholarly journals Efficient and Precise Grinding of Sapphire Glass Based on Dry Electrical Discharge Dressed Coarse Diamond Grinding Wheel

Micromachines ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 625 ◽  
Author(s):  
Yanjun Lu ◽  
Wang Luo ◽  
Xiaoyu Wu ◽  
Chaolan Zhou ◽  
Bin Xu ◽  
...  
Keyword(s):  
Surface Quality ◽  
Electrical Discharge ◽  
Ground Surface ◽  
Grinding Force ◽  
Wheel Speed ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Feed Speed ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding

In this paper, in view of low grinding efficiency and poor ground surface quality of sapphire glass, the coarse diamond grinding wheel dressed by dry impulse electrical discharge was proposed to perform efficient and precise grinding machining of sapphire glass. The dry electrical discharge dressing technology was employed to obtain high grain protrusion and sharp micro-grain cutting edges. The influences of grinding process parameters such as wheel speed, depth of cut and feed speed on the ground surface quality, grinding force and grinding force ratio on sapphire glass were investigated, and the relationship between grinding force and ground surface quality was also revealed. The experimental results show that the grain protrusion height on the surface of a coarse diamond grinding wheel dressed by dry electrical discharge can reach 168.5 µm. The minimum line roughness Ra and surface roughness Sa of ground sapphire glass surface were 0.194 µm and 0.736 µm, respectively. In order to achieve highly efficient ground quality of sapphire glass, the depth of cut was controlled within 7 µm, and the wheel speed and feed speed were 3000–5000 r/min and 10–20 mm/min, respectively. The influences of feed speed and wheel speed on grinding force ratio were more significant, but the influence of depth of cut was little.

Electrical Discharge Dressing Metal-Bonded Diamond Grinding Wheels with Misted Emulsion

2013 ◽  
Vol 313-314 ◽  
pp. 785-789 ◽  
Author(s):  
Lan Rong Cai ◽  
Wen Yu Ruan ◽  
Min Li
Keyword(s):  
Electrical Discharge ◽  
High Hardness ◽  
Processing Parameters ◽  
Diamond Wheel ◽  
Grinding Wheel ◽  
Three Dimension ◽  
Grinding Wheels ◽  
Diamond Grinding ◽  
Before And After ◽  
Electrical Discharge Dressing

Preparation of superabrasive grinding wheels presents severe challenges due to the high hardness of abrasive grain. In this paper, electrical discharge dressing (EDD) technology with misted emulsion is applied to dressing bronze-bonded diamond wheels. Dressing experiments were carried out. The wheel profiles before and after dressing were measured using a Dektak 6M profilometer. The diamond wheel surface topographies before and after dressing were observed by three-dimension digital microscope. In addition, the performance of EDD’ed wheel was evaluated in practical grinding. It is shown that favorable surface topography can be obtained under suitable processing parameters and EDD misted emulsion with is feasible for metal-bonded diamond grinding wheel.

Feasibility Study on Near-Dry Electrical Discharge Dressing of Metal Bonded Diamond Grinding Wheels

2009 ◽  
Author(s):  
Y. Jia ◽  
C. J. Wei ◽  
B. S. Kim ◽  
D. J. Hu ◽  
J. Ni
Keyword(s):  
Electrical Discharge ◽  
Grinding Wheel ◽  
Grinding Wheels ◽  
Wheel Surface ◽  
Rotating Speed ◽  
Diamond Grinding ◽  
Electrode Shape ◽  
Experimental Parameters ◽  
Discharge Parameters ◽  
Electrical Discharge Dressing

Diamond grinding wheels are important tools to carry out precise or ultra-precise grinding of difficult-to-machine materials; however, the difficulty of dressing diamond grinding wheels is a bottleneck problem in their wide application. The objective of this study is to identify the feasibility of near-dry electrical discharge dressing (EDD) of metal bonded diamond grinding wheels. Through design of experiment (DoE), sets of tests were carried out to select proper dielectric mist composition and electrode material, to quantify the dielectric mist composition, to choose the electrode shape and rotating speed, and to investigate the influence of electric discharge parameters on dressing performance. By applying optimized experimental parameters to near-dry EDD of metal bonded diamond grinding wheels, more diamond grits protruded out of the grinding wheel surface, and the worn diamond grinding wheel got sharpened.

Sign in / Sign up

Export Citation Format

Share Document