First, earnestly implement the following  Cylindrical Grinding provisions relating grinder (a) Install a new wheel must be done: 1, carefully check the new wheel, if any cracks, bruises strictly prohibited. 2, the new wheel should be careful after two static equilibrium, ie, the previous installation, install and then remove the spindle diamond corrected balance again. 3, the new wheel installation should the wheel between the flange lining, 0.5 to 2 mm pad of paper. Flange screws should be tightened evenly, but do not compress the transition to avoid crushing wheel. 4, the new wheel is installed, in order to work for at least five minutes of speed air operation, verify the correct installation, normal operation only after work. (Two) working before checking wheel and wheel cover should be intact without breaking up, properly installed, fastening reliable. No tools are not allowed to start the wheel cover. (Three) working in earnest to do: 1, before the start of each wheel should be open to stop logging in the hydraulic stop position, adjust the position of the handle on the lowest speed, the wheel head rapid feed handle on the reverse position, to avoid accidents . 2, each wheel before starting, you should first start the lubricating oil supply system hydrostatic pump or pumps, wheel spindle lubrication to be normal, mercury switches or hydrostatic pressure from the top to meet the design specified value, the wheel spindle float before you can start the grinding wheel . 3, the beginning of grinding, the amount of time given to small, cutting speed is slower, to prevent wheel due to cold brittle fracture, especially in winter when low temperatures and more attention....