Motor basic knowledge

First, the role of vacuum cleaner motor and working principle

   1, the role of the motor:

      When the motor rotates at high speed, make the vacuum cleaner dust box produce a certain vacuum, dust will enter the vacuum cleaner dust box in the dust bag.

   2, the motor works:

      When the motor is energized, the current flows through the rotor winding, under the action of the stator magnetic field, the rotor winding enameled wire is forced to move, so that the rotor is in the direction of the rotor, The shaft rotates around the center; the rotor rotates and drives the moving impeller fixed on the rotor shaft;

      The air in the inner cavity of the impeller is thrown out of the air outlet by the centrifugal force, so that the air inside the impeller is reduced and the negative pressure is formed on the surrounding air. The air outside the impeller is pressed into the impeller by atmospheric pressure. The vacuum suction of the motor is formed.

Second, the basic structure of the motor

   1, stator

      Stator core

      Winding: Generates a magnetic field

   2, the rotor

      Shaft

      Rotor core

      commutator

      Bearing

      Winding: Current carrying conductor interacts with the stator magnetic field to produce electromagnetic force

      Other (insulated end plate, slot insulation, wedge, etc.)

   3, brush: friction contact with the rotor commutator, the rotor continued through the current

   4, support:

      Chassis: fixed stator

      End cover (or bracket): together with the chassis to support the rotor, so that the rotor can be high-speed rotation

   5, the fan part:

      Impeller: Rotate the rotor when the rotor rotates at high speed

      Wind cover: form an effective sealed cavity

      Wheels: the role of air flow guide

Third, the motor production process

   ★ Rotor:

      1, the finale

      2, pressure end plate

      3, pressure commutator

      4, rotor slot insulation inserted

      5, winding

      6, rotor wedge inserted

      7, spot welding

      8, the rotor semi-finished product testing

      9, drop paint

      10, commutator fine car

      11, dynamic balance

      12, rotor finished product testing

      13, press the bearing

    ★ stator

       1, installed stator skeleton, stator insulation paper

       2, stator winding

    ★ motor assembly

       1, management line

       2, the stator into the case

          Riveting

       3, hook line

          Put the corrugated circle

       4, the rotor bearing clean, glue

          Rotor entry cover (or bracket)

       5, end caps, chassis together

       6, end cover, chassis assembly

       7, set the impeller

       8, with bushings, inner pressure ring, moving impeller, outside the pressure ring, nuts

       9, nut tight

      10, pressure hood

      11, installed brush

      12, stator lead wire spot welding

      13, thread processing

      14, inspection (pressure test, power performance test)

      15, paste the motor nameplate, packaging

    ★ motor aging and inspection

       1, the motor aging: running together

       2, the motor full inspection

          Power performance test: Check the performance associated with the vacuum cleaner (such as: input power P1), and motor sparks, different sound, vibration, etc.

          Pressure test: judgment of safety performance

Fourth, the general requirements of process specifications and safety

   1. Staff to be the appropriate training, master the operating skills and related equipment, process quality requirements; and then in strict accordance with the requirements of the implementation of the process documents, not allowed to follow their own habits to operate.

   2. Staff in accordance with the relevant process requirements for the first inspection, and make a record.

   3. The product or parts should be gently, to avoid damage to parts.

   4. Keep the work area clean, parts, packing boxes and other items placed neatly, prohibit the placement of living goods in the work area or other products not related to the production; pay attention to prevent small parts And so on to the inside of the motor.

   5. Identification or transfer card to be clear; qualified products and nonconforming products to be placed separately, non-conforming products to be placed in the designated location; motor products or materials are not mixed with other models of products or materials.

   6. If you find that the defect can not be determined or a certain number of defects, or equipment, tooling work when the sound is abnormal, should be timely reporting.

   7. It is strictly forbidden to change the parameters privately or to the machine fixture, electrical control circuit and other parts of the mobilization.

   8. Use equipment, tooling, tools should be action norms; not brutal operation, to avoid impact, beat, break the equipment, tooling, tools or products.

   9. When working with the hands of the button, use both hands while holding the left and right sides of the button switch to operate, not allowed to use the handle Other things or actions to replace; not two people at the same time operating a machine; in case of sudden situation, should quickly press the emergency brake switch.