Sorry to bump an older thread but in doing some research on the
controller board used in the sewing machine motor kit I had
purchased I found the following site.
Please note that I have no affiliation to this site nor have any
experience with his products, but he seems to offer a full line of
conversion kits and parts for these motors. This includes full
kits for the mini-lathes and mini-mils along with a ton of other
machines.? It also appears he does some repair services as well.
-Jay
On 2/9/24 21:45, Tony Smith wrote:
For
some strange reason laser cutters use 3-phase steppers
rather than the usual b-polar ones.? Makes the drivers a bit
expensive & rare by comparison.
?
Tony
?
?
?
It
interesting thd different ways I have seen for low speeds?
First on AC motors lots of poles you charge the poles for
different speeds but very costly motors.
Then was just was belts and or gears.
Variable pitch belts and charge the gear Works but still
gears at one was costly too but not bad.
The AC/DC motors usd a Variable transformers. This first
lower cost motor setup 1 to w to 1 to 100 speed reduction?
The electronic speed control start with small motors but
cost was a lot lower.
The stepper motors in Printers was big change.? In 1970's?
they did not need encoders for low cost printers. If skip a
a few spaces out of over a hundred thousands you not notice.
Next use on low cost CNC equipment. For most part they used
two phases motor.
Later I saw mini 3 phase motor but I saw first controls in
1960's but winding your own motors.
Now we know as brushless DC motors . Some maybe two phases I
just have seen it .?
Some dates can earlier history on web can be do to the
writer error. I know mine maybe off too.?
The 1960's is where lot changes switch from tubes to
transitions?
Dave?
Ralph Lehotsky 2:12pm? ?
Yes - it's probably geared down quite a
bit for that application, so power is not as important
there
--
-Jay Fougere
