Diamond pottery excircle emery wheel

The utility model relates to an emery wheel, especially a diamond pottery excircle emery wheel, including discoid aluminum substrate, diamond vitrified abrasive and a set of above adjustment mechanism for adjust the adjustment mechanism of aluminum substrate and the interval of diamond vitrified abrasive, the circumference that adjustment mechanism is located aluminum substrate on the surface, adjustment mechanism and aluminum substrate 's circumference fixed surface are connected, the circumference that the diamond vitrified abrasive is located aluminum substrate on the surface, diamond vitrified abrasive and adjustment mechanism fixed connection. When using, because the diamond vitrified abrasive is behind the sinter molding, every shrink size all is inconsistent, so aluminum substrate is very difficult with the cooperation of diamond vitrified abrasive, thus the adjustment mechanism setting aluminum substrate 's circumference on the surface, accessible adjustment mechanism's adjustment for the pottery diam