When installing, first check the safety and quality of the grinding wheel. Tap the side of the grinding wheel lightly with a hammer (or a pen). If the sound is crisp, there is no problem.
Where to install the grinder is the first thing we need to consider during the installation process. Only when a reasonable and suitable location is selected can we carry out other work. It is forbidden to install the grinder in a place directly facing the nearby equipment and operators or where people often pass by. Generally, a dedicated grinder room should be set up in a larger workshop. If it is indeed impossible to set up a special grinder room due to the limitation of the plant terrain, a protective baffle with a height of not less than 1.8m should be installed on the front of the grinder, and the baffle must be firm and effective.
The unbalance of the grinding wheel is mainly caused by the inaccurate manufacture and installation of the grinding wheel, which makes the center of gravity of the grinding wheel not coincide with the rotary axis. The harm caused by unbalance is mainly manifested in two aspects. On the one hand, when the grinding wheel rotates at a high speed, vibration is caused, which easily causes polygonal vibration marks on the surface of the workpiece; on the other hand, the unbalance accelerates the vibration of the spindle and the wear of the bearing, which seriously Sometimes it will cause the rupture of the grinding wheel, and even cause an accident. Therefore, it is required that the sand office building with a diameter greater than or equal to 200mm should be statically balanced after the chuck is installed, and the static balance should be repeated after the grinding wheel has been trimmed or found to be unbalanced during work.
The matching problem mainly refers to the matching problem of the chuck and the grinding wheel. According to the standard requirements, the diameter of the grinding wheel chuck should not be less than 1/3 of the diameter of the sand office building to be installed, and the corresponding regulations stipulate that when the grinding wheel is worn to a diameter 10mm larger than the chuck diameter, a new grinding wheel should be replaced. In this way, there is a matching problem between the chuck and the grinding wheel. Otherwise, such a situation will occur, and the "big horse-drawn cart" will cause waste of equipment and materials; Therefore, the reasonable matching of the chuck and the grinding wheel can save equipment and cut materials on the one hand; on the other hand, it meets the requirements of safe operation. In addition, a cushion with a diameter 2mm larger than the diameter of the chuck and a thickness of 1mm~2mm should be installed between the grinding wheel and the chuck.
The protective cover is the most important protective device of the grinding wheel machine. Its function is: when the grinding wheel is damaged for some reason during work, it can effectively cover the grinding wheel fragments and ensure the safety of personnel. The shape of the grinding wheel guard is round and square, and its maximum opening angle is not allowed to exceed 90°; the material of the guard is steel with a tensile strength of not less than 415N/mm2. When replacing a new grinding wheel, the installation of the protective cover should be firm and reliable, and the protective cover should not be disassembled or discarded at will. The light shield is one of the main protective accessories of the grinder. This device must be installed when the opening of the protective cover above the horizontal plane of the main shaft is greater than or equal to 30 (. Its main function is to block the flying light during the grinding process, so as not to hurt Operator. It is installed at the positive end of the protective cover opening, the width should be greater than the width of the grinding wheel protective cover, and it should be firmly fixed on the protective cover. In addition, the gap between the circumferential surface of the grinding wheel and the baffle should be less than 6mm.
The bracket is one of the commonly used accessories of the grinder. According to regulations, the grinder with the diameter of the grinding wheel above 150mm must be equipped with an adjustable bracket. The distance between the grinding wheel and the bracket should be less than 1/2 of the minimum size of the workpiece to be ground, but the maximum should not exceed 3mm.
