Re: [CAD_CAM_EDM_DRO] Newb question....

In a message dated 10/1/2004 12:24:22 AM Central Standard Time,
Exalted_Ugu@... writes:

Is there any reason why you would not use stepper
motors with encoders or resolvers in a closed loop to minimize lost
steps or similar error?



SOMEtimes it IS done. Some manufacturers even SUPPLY steppers with encoders
mounted on their back-ends. But this is GENERALLY not necessary, except
perhaps for some scientific or engineering application. For general
chip-making, NOT, so it is a waste of money. That's the whole POINT of steppers! You
get the CNC moves for least cost (assuming you BUILD it all correctly!
Meaning NICELY!).

Look in the CAD_CAM_EDM_DRO "Photos" department (click on "Photos" on the
left of the "home page") and then go to the second page, and click on
"Homebrew..." Those two machines are totally home-made with steppers and NO
encoders. Jan Rowland


[Non-text portions of this message have been removed]