Backlash Question
OK, I’m about six months into the “Flying by the Seat of my Pants”
design of my small router / PBC drill mill.
Motors are Vexta PH268M-E1.5 (NEMA 23)
Driver is HobbyCNC 4 Axis
Power is 24VAC 10 Amp trans + rectifier & caps ~ 30VDC
Software is TurboCNC 4.x
All this seems to work as I haven’t “Smoked" Anything.
I have developed processes which allowed me to make linear slides and
leadnuts from polyurethane casting resin which have no (perceivable by me) play or backlash.
I’m Prototyping / Proofing the frame –
(3/4 MDF, Max expected size 20”x – 20” y – 12” z, with a 12" sq table on the X Axis) Using 3/8” x 16 TPI Threaded Rod and ½” round slide rails
In working on the frame it looks like I’ve come up with way to mount the
leadscrews with no backlash.
NOW the question occurs to me. . .
Should I adjust things so that I have just the SLIGHTEST bit of backlash?
Is a SMALL bit of backlash a GOOD thing to have?
With no backlash on the leadnut or leadscrew / frame will the machine be too
TIGHT? (The leadscrew DOES turn freely by finger force in the frame, no binding)
With no backlash am I increasing the chance of snapping bits if the machine
were to “Kick Back” for some reason?
(Am I obsessing ?)
Too much time “Thinking” not enough time “Doing “
Mike_L
When I was younger I thought I knew EVERYTHING,
NOW, the older I get the more I find out I don’t know!