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Equipment/Lathe: Difference between revisions
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=== Updates === | === Updates === | ||
==== Update 13/03/2013 ==== | |||
[[user:Asoko|aaron]] (& [[user:mentar|mentar]]): Checked the brushes -- they are wearing on one side, and there is some play in them tangentially to the commutator. Mentar and I ground some new ones to be a bit closer fit. But the commutator will need cleaning up before we use the motor again, otherwise it will wreck the brushes. Please do NOT use emery paper to do this -- it can wreck the motor! Also, I think I've figured out the main reason why it's not working! Details to follow, in case I'm completely wrong :) | |||
==== Update 09/03/2013 ==== | ==== Update 09/03/2013 ==== | ||
[[user: | [[user:Asoko|aaron]]: Took apart all the mechanics (with the exception of the spindle itself), cleaned/re-oiled everything, and put it back together. The leadscrew mechanism was quite stiff, but rotates a lot more freely now. I had to very slightly file down the edge of one of cog shafts, which seemed to have flared out a bit and was sticking. I've left it covered by a tarp, with the motor removed. | ||
The motor itself still has the problem of tripping the circuit breaker (it hasn't magically healed itself), and at low revs has a very noticable sparking around the commutator. Apparently there are lots of ways to mess up a motor when trying to clean it, so we should be careful. I found some potentially very useful information and have put it into [[Equipment/MotorMaintenance]]. | The motor itself still has the problem of tripping the circuit breaker (it hasn't magically healed itself), and at low revs has a very noticable sparking around the commutator. Apparently there are lots of ways to mess up a motor when trying to clean it, so we should be careful. I found some potentially very useful information and have put it into [[Equipment/MotorMaintenance]]. | ||
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==== Update 02/02/2013 ==== | ==== Update 02/02/2013 ==== | ||
[[user: | [[user:Asoko|aaron]]: I've taken apart the motor and did my best to clean it out. There was a setscrew loose inside there, but it was pretty well stuck to the one of the magnets. It appears to be used to secure the gear to the shaft. Also, I am guessing that there might be a problem with carbon dust building up between the contacts of the commutator, which could possibly cause a short that would make the motor draw a lot of current (though this would not likely cause a ground fault). I've cleaned those out as well. I haven't done any testing yet though. | ||
==== Update 11/12/2012 ==== | ==== Update 11/12/2012 ==== | ||
