Selection on Grinding Parameters of Diamond Grinding Wheels
Synthetic diamond grinding wheels commonly use lower grinding speed. If the velocity of grinding wheel is improved, it can help to obtain lower surface roughness.The main parameters including grinding speed,grinding depth,the speed of workpieces, the feed speed .
A, The grinding speed
Synthetic diamond grinding wheels commonly use lower grinding speed. If the velocity of grinding wheel is improved, it can help to obtain lower surface roughness, but if the grinding temperature is also increased accordingly, the grinding wheel wear will become serious.
If the velocity of grinding wheel is too low, the chip thickness of single grain will be too big, which will make the surface roughness value increased, and also contribute to the grinding wheel wear. The wheel speed of domestic diamond grinding wheel is as follows:
Bronze bond: dry grinding vs = 12 ~ 18 m/s; Wet grinding vs = 15 ~ 22 m/s.
Resin bond: dry grinding vs = 15 ~ 22 m/s; Wet grinding vs = 18 ~ 25 m/s.
The recommended speed of grinding diamond wheels with different grinding ways is as follows:
Flat grinding: vs = 25 ~ 30 m/s.
Cylindrical grinding: vs = 12 ~ 25 m/s.
Internal grinding: vs = 12 ~ 15 m/s.
Tool grinding: vs = 12 ~ 20 m/s.
B, The grinding depth
If the grinding depth is increased, the grinding forces and grinding heat will also be increased. The selection of grinding depth can depend on abrasive particle size or refer to bond selection or grinding ways.
C, The speed of workpieces
The speed of workpieces is generally selected within 10 to 20 m/min. On internal grinding and fine-grained grinding wheel, operators can improve the speed of workpieces appropriately. But it is unfavorable to be exorbitant, or the grinding wheel wear or vibration will be increased.
D, The feed speed
If the feed speed is improved, the grinding wheel wear will be increased, and the surface roughness will be also increased, especially resin bond.
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