Grinding sequence notes
In order to make good contact between the brush and the commutator, we should also pay attention to grinding it when using it. The new brush should be ground. The grinding is usually done on the motor. First, press the outer arc of the commutator, process a wooden tool, and cut several different thicknesses of water sandpaper into the same width as the commutator. long strip, remove the carbon brush (please make a mark on the handle of the removed carbon brush and the groove of the carbon brush to ensure that the left and right are not wrongly changed during installation) and stick the commutator with a wooden tool wrapped with sandpaper, Press the rotation direction of the motor with the other hand, and gently turn the shaft commutator to grind; use the sandpaper in the order of thickness first, then finer. Fine water sandpaper (or metallographic sandpaper) The surface of the commutator is obviously uneven (tactile by hand) or sparks when the motor is running.
Grinding sequence steps
First press the outer arc of the commutator, process a wooden tool, cut several water sandpapers of different thicknesses into strips as wide as the motor commutator , and remove the carbon brush (please pay attention to the removed carbon brush) Mark the handle of the brush and the groove of the carbon brush to ensure that the left and right are not wrongly changed during installation) Use a wooden tool wrapped with sandpaper to stick the commutator. Press the rotation direction of the motor with the other hand, and gently turn the shaft commutator to grind. Use the sandpaper in the order of thickness first and then finer. When a piece of sandpaper is too blind to use, change to another finer sandpaper until it runs out. The water sandpaper (or metallographic sandpaper) The surface of the commutator is obviously uneven (tactile by hand) or sparks when the motor is running, such as the fourth case.