Pat,
Yes, they tried a chamfer tool with a drill stop and somehow
always manage to remove too much material. I'd like to find
a fail safe way to process multiple holes.
In the interim I may try the burraway tool.
Thanks for all the input... B-)
P.
The reason I posed the question was because I'm
organizing training and putting together a
formal procedure. I'd rather use an industry
standard than "re-creating the wheel".
More specifically the application is a stamped
hole through an aluminum extrusion.
There a reluctance to...
Deburring seems to be a process that's different
from company to company.
Does anyone know if there's actually an industry
standard? Or can someone suggest a source of a
good general overview of deburring?
I tried a web search and the result was mostly
vendors with various devices to sell...
Rich,
Another quick check [and common fail mode] is to make sure
the brushes are long enough, [not worn out]. Although, if
the brushes are badly worn there would be a noticeable drop
in typical run current due to poor [or no] contact with the
commutator.
Pete
Pap,
A couple of less complicated details to check first
are:
a) did the bearing have the correct preload?
This is a common cause of failure - too much and
the bearing runs hot, too little and the bearng
won't track correctly. The preload depends on the
internal clearance of the bearing and...
Ada,
The best place to start is with the manufacture of the
motor. Typically they can provide hook-up info and
the winding resistance of each phase.
If this info is not available check that the pahses
have equal resistance.
re: rotation; direction is determined by how the phases
are hooked up...
Without knowing the load on your roller, it's hard to
say which motor to use. Although, there are some rather
large stepper motors on the market.
For accuracy [I agree with the others] I'd use an optical
rotary multi-channel encoder with indexing pulse.
If you go with a stepper, you'll need to...
Buck,
Yes, you're right channels S & Z are the index channels. I'm not sure about
you're application, but if it has a home position and has to travel a given
distance, then an index pulse is used. If this channel is out of adjustment
(high waterfall [distortion] or low amplitude), then you'll...
BuckNut,
Yes, on the 5v supply.
re: resistors; depending on the model encoder you have, the resistors
for the channels and the led may already be included on the encoder
pcb, but don't assume... I'd typically start with 4.7k using a decade
box for the channels and then adjust the resistance...
Hi,
I used to service & repair Yaskawa servo motors and though I'd offer my
.05 worth.
I found a long time ago Yask offers 0 support because they'd rather sell
you a new replacement. Typically there encoders require special tooling to
remove and/or install.
If you have an absolute positioning...
