Circuit City original translation, please indicate the source!
From the production of audio, gradually expand its business to laser radar, Velodyne is now in the leading position of the automatic driving industry. This company focuses on manufacturing laser radar sensors and is currently in the industry leader. Laser radar acts as an automatic driving car "eye" role, responsible for collecting surrounding visual information for cars. So, what is the wonderful place for the Velodyne produced by the king of the global laser radar? Today, we will take care of it carefully.
Disassemble the wire
The five wires connected to the encoder sensor are removed. They are white, sticky together. You don't need to give them labels because they don't cross them on the blackboard. Remove the two copper wires next to the coarse wire connected to the motor stator. It must be indicated where the wire is available. The figure below shows the bottom PCB.
Unpacking board
In general, the grounding point on the plate should be first contact, the other components on the plate, so as to avoid damage to the circuit panel plate. There are four 3/32 hexagonal screw holdings to the bearing housing. Take them out and carefully pull up the board (note the gyroscope), pull it from the bearing housing with a hard wire.
Unpack the encoder, sensor
In order to remove the bearing housing, it is necessary to disassemble the encoder sensor. It is connected to two hexagonal screws. They should be easily removed (remember when you re-comes together). Slide the sensor in the radial direction and pay attention to the across encoder ring. The figure is disassembled the encoder sensor.
Remove the rear bearing case
There are four 3/32 hexagonal screw support bearing housings. Remove them. There is a washer and a retaining ring on the shaft. Put the sealed circle and remove the gasket. Be careful not to damage the coil located at the end of the axis. Pull the bearing housing until you can find a screwdriver between it and the subject. Put the remaining open. It is a look in the bearing housing.
Take a bearing
The bearing is launched from the bottom of the bearing housing. It doesn't have to force. There is a spring under the bearing, and it must not be lost when removing the bearing. As shown in the figure, the bottom surface of the rear bearing housing. Push the bearing from here. Note that the black ring is very crisp, so it cannot be damaged.
Dismantle
The top bearing is 6002H SS sealing ball bearings. To disassemble it, you will have to delete the encoder ring, motor rotor, and motor stator.
Before you remove anything, you have to remove two wires. The removal rust line is the line that enters the axis through that yellow disc. You want them to freely pass through the yellow disc.
The figure is a hexadecimal key that secures the encoder / induction device on the shaft. There are two mounted on each other (may be used to lock). Take them out on one side. You may want to mark or think of a method to remember the direction of the shaft encoder disk.
Next, the components of the fixed motor stator are removed. There are four around the stator, each with two hexagonal screws. You should make a marker on the stator so that it will return to its original position.
Now carefully open the motor stator and take it down the encoder / sensing device / permanent magnet assembly on the spindle. Since the magnet is strong, I found that the shaft assembly and motor stator are easier.
At this time, the top bearing should be exposed. Use a bearing drawer or a press to remove it and replace it.
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