A long-life system used a exhaust fumers of air angle grinder

摘要

The present invention relates to the extension of the life of the air angle grinder. The grinding wheel grinds the workpiece during the grinding operation, which causes a lot of grinding dust, and the grinding dust springs out radially by the rotation of the grinding wheel, some of which are relatively Due to the pressure drop, it is sucked by the vortex phenomenon toward the grinding wheel shaft and penetrates the grinding wheel bearing.;At this time, alumina oxide (Al ₂ O ₃ ) in the grinding dust penetrates the spherical surface of the bearing due to its high hardness, thereby causing an increase in vibration and shortening of the life of the air angle grinder.;In order to solve this problem, the present invention induces and discharges a part of the exhaust air to the whetstone bearing without discharging the exhaust air to the outside of the casing, while the exhaust air is pushed out while grinding while preventing the pressure drop on the grindstone bearing side during grinding operation. Since it is discharged together with the dust, it is characterized by prolonging the tool life by preventing damage of the grinding wheel bearing by the grinding man.