I believe that many people will use the centrifuge. There may be some small problems in the process of using the centrifuge. Today I will take you one step closer to the maintenance method of the high-speed centrifuge motor:

First, determine whether the armature needs to be disassembled and observe whether sparks occur between the carbon brush and the commutator when the motor is running, and the degree of sparks:

(1) No sparks. The carbon brushes and commutator are normal, no repairs are required;

(2) There are only 2 to 4 minimum sparks. At this time, carefully observe if the surface of the commutator is flat. In most cases, no repair is necessary;

(3) In addition to r, there are 4 extremely small sparks with F, and 1 to 3 large sparks. You do not need to dismantle the armature, you only need to grind the carbon brush commutator with sandpaper;

(4) If there are large sparks on four, you need to grind the commutator with sandpaper, and you must even carefully add the commutator to the car. At this time, you must remove the carbon brush and the armature. Of course, after a giant commutator is processed, it is necessary to change the carbon brush to grind the carbon brush.

Second, the method of disassembling high-speed motors

1. Because when removing the end cover and armature. The vibration will damage the carbon brush, so the carbon brush should be removed from the carbon brush first. It is also fixed that the angle between the two carbon collectors and the heading may not be the same. In order to ensure that they can be restored to the original state during installation, the left and right carbon brushes will not be reversed. Mark the left and right carbon brushes. Also remember not to damage the contact surface between the carbon and the commutator.

2. One end of a high-speed motor usually has a cooling fan. On the other end, there may be a magnetic steel or speed measuring ring for speed measurement. When removing the cooling fan blades and magnetic steel or speed measuring ring, you must be careful. Falling leaves, speed measuring magnetic steel is broken. Secondly, a mark should also be placed on the fan sleeve or between the magnetic steel sleeve and the shaft, so that after the repair is completed, it can be installed in the original marked position. Steel), so when assembling, it must be assembled in accordance with the mark at the time of disassembly. This is a trivial matter in general motor repair, and the I side can be of great concern in the repair of high-speed motors. Because once the speed ring or fan blade is damaged. Or sections are assembled as marked, even if the other parts are well repaired. After assembly, it may cause unbalanced vibration of the whole machine when running at high speed.

3. Do not use a hammer or punch when disassembling the high-speed motor. Use a pull horse when you use a hard knock. Use a pull horse to pay attention: the top of the pull should be directly on the top eye. A protective pad should be placed at the top of the Rama and the top eye, the purpose is to protect the top eye on the armature shaft from damage.

4. Fix the end caps on both ends of the switch. Before disassembling, make a mark on the seven lower end caps. In order to install J: as it is after repair. When disassembling the bearings on the armature, clean them carefully. Use clean house gasoline when cleaning. After the gasoline is dry, fill the bearing chamber with 7014 (or 7018) bearing grease. molybdenum). Put it in a clean place for use; if the surface of the commutator is flat and has a purple luster, this is an oxide layer that can protect the surface of the commutator. Use a soft brush to remove the surface powder.