Question about Makita 12 Volt Cordless Drill/Driver Kit

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Drill motor properties

We r doing a project which concerns the use of a drill motor to run our robot.i needed all da information regarding the properties of drill motor, its drawbak and why it is more efficient den other wud be a great help if u guys cud help us.thanx

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The main thing with cordless/battery (direct current) powered motors is that they have a static magnet instead of field windings. The main rotary part of the motor is still wound in segments but it uses dual magnets for the static outer part of the motor. These magnets have to be aligned properly for the motor to run at optimal performance. If they are too far out it won't runa t all. The magnets are also prone to cacking or breaking if subjected to heavy impacts (ie drill dropped from ladder). The other thing is the amount of time they operate at optimal performance but this is nly really affected by the battery capacity and amount of load the motor has to operate. Alternate current motors with wound field coils are alot more powerfull and abviousley have no time limit, but you would only then be able to operate your robot while it is plugged into a socket. The new lithium ion batteries are a lot longer lasting, and stay at peak performance for longer, but when they start running out they tend to just stop instead of slow down.

Posted on Nov 04, 2008


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