Full Version: Etching Shifts to the Right.
From: Dave Jones (DAVERJ) [#4]
26 Mar 2007
To: Mr. Mike (MIKEA) [#3] 27 Mar 2007
A servo motor uses an encoder to determine position. It can be a strip (like newer Epilogs use) which is a glass or plastic strip running the length of the X axis, or it can be a rotary encoder built into the back of the motor. If you can't find a long straight strip, it's probably an encoder on the motor. Those are usually sealed and except for a loose wire they usually can't be cleaned. The long strips are usually exposed and need to be cleaned.
Steppers don't need an encoder, though a hybrid system can use both an encoder and steppers.
You might also check the X axis rails to make sure they're clean, and whatever runs on the X rails is in good shape (rollers, a slide, linear bearing, etc...)
From: Harvey only (HARVEY-ONLY) [#5]
26 Mar 2007
To: Mr. Mike (MIKEA) [#3] 27 Mar 2007
Servos use a closed loop to control speed. There must be an encoder in the circuit to report the position to the electronics.
Most often we hear here about an encoder strip along the X beam that gets slightly dirty. It may be hidden under a shield in order to try to keep it clean.
From: John (ICTJOHN) [#6]
27 Mar 2007
To: Mr. Mike (MIKEA) [#3] 27 Mar 2007
Mr. Mike,
That photo looks like what was going on with my machine when the bearings/belt needed replaced. Hope you find an answer quickly.
~
From: Mr. Mike (MIKEA) [#7]
27 Mar 2007
To: John (ICTJOHN) [#6] 27 Mar 2007
Is the replacement of the belts and bearings something you did yourself or did you have a tech do it?
Thanks,
-Mike
From: John (ICTJOHN) [#8]
27 Mar 2007
To: Mr. Mike (MIKEA) [#7] 27 Mar 2007
I replaced them myself.............. I have a different brand machine than you.
so, "you're mileage may vary, price does not include sales tax, as seen on TV".
:O)
Call your mfg. and they should be able to diagnose it and get the proper parts on the way to you, then help you with the install.
B-)
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