Search found 269 matches

by rk9268vc
Wed Aug 16, 2023 9:38 pm
Forum: Centroid Acorn CNC Controller
Topic: spindle speed error and rigid tapping - [acorn can compensate - works well - vids attached]
Replies: 3
Views: 379

Re: spindle speed error and rigid tapping

Works Great! It is able to compensate for the rpm error no problem Here are some videos PM-30MV old school brushless servo with analog pot adjustment 3D printed pulley for encoder off of low range belt pulley Tapping 1/4-20 with spiral tap Using tormach compression tap holder for safety - because i ...
by rk9268vc
Wed Aug 16, 2023 6:32 pm
Forum: Centroid Acorn CNC Controller
Topic: spindle speed error and rigid tapping - [acorn can compensate - works well - vids attached]
Replies: 3
Views: 379

Re: spindle speed error and rigid tapping

Centroid uses the exact speed measured by the encoder to calculate the Z feedrate. I was reading the tech bulletin 304 and it was saying to have the rpm match commanded within 1 rpm. but if what youre saying is true, that is pretty neat thanks! :) "Making Threads Notes: a.) Be sure to check th...
by rk9268vc
Tue Aug 15, 2023 8:20 pm
Forum: Centroid Acorn CNC Controller
Topic: spindle speed error and rigid tapping - [acorn can compensate - works well - vids attached]
Replies: 3
Views: 379

spindle speed error and rigid tapping - [acorn can compensate - works well - vids attached]

How well does acorn compensate in Z speed if the spindle rpm (measured by encoder) is off from commanded rpm? Or does it compensate at all? Like if I tap at 640 rpm and the motor is actually turning 700 rpm will it just plunge faster so the threads are "fine"? My spindle motor is an ancien...
by rk9268vc
Wed Nov 16, 2022 2:58 pm
Forum: Machining Strategies. Work Holding, Tool Path, Cutters, Feeds/Speeds etc.
Topic: Vice recommendations
Replies: 3
Views: 942

Re: Vice recommendations

I would strongly strongly recommend getting one of those SMW fixture plates for your bed and running the mod vise.
I save so much time on setup it is night and day difference.
Plus can mount normal vise to the fixture plate
by rk9268vc
Thu Nov 03, 2022 3:05 pm
Forum: Centroid Acorn CNC Controller
Topic: Spindle encoder issues
Replies: 4
Views: 681

Re: Spindle encoder issues

the wire colors mean nothing and every manufacture uses different color combos reference the wire color code printed on the side of the encoder or in its tech sheet then compare that to acorns published DB9 pinout and make sure they match Here is the acorn pinout https://centroidcncforum.com/viewtop...
by rk9268vc
Thu Oct 20, 2022 2:32 pm
Forum: Centroid Acorn CNC Controller
Topic: What low profile tool setter options are there out there?
Replies: 7
Views: 819

Re: What low profile tool setter options are there out there?

https://www.automationdirect.com/adc/sh ... 11ddb-duld

This one from automation direct is very small and works very good. i use it on my mill

1 inch tall, .75 inch wide, 1.25inch long

claims 0.0005mm repeatability
by rk9268vc
Thu Oct 20, 2022 2:20 pm
Forum: Centroid Acorn CNC Controller
Topic: Help with servo driver wiring
Replies: 2
Views: 407

Re: Help with servo driver wiring

It is just sinking vs sourcing

two ways to make pulses:

Switch the positive lead, leaving negative constant

Switch the negative leg leaving positive constant (what they are doing here)

just wire it common positive, shouldnt be a big deal
by rk9268vc
Mon Oct 10, 2022 3:17 pm
Forum: Centroid Acorn CNC Controller
Topic: Anyone ever run CNC12 on server hardware? in a windows VM? Through a switch?
Replies: 3
Views: 637

Anyone ever run CNC12 on server hardware? in a windows VM? Through a switch?

Ive got a Lenovo ThinkServer RD350 with a Xeon E5-2690 v4 (1985 single thread CPU score) 14 core 28 thread I am wondering how well CNC12 will run in a windows VM on that server? The hardware will be way more stable than any desktop / laptop i have, and all my CAD and prints are already on the server...
by rk9268vc
Mon Oct 10, 2022 9:18 am
Forum: Centroid Acorn CNC Controller
Topic: Wireless pendant problem <solve com errors, see thread>
Replies: 8
Views: 876

Re: Wireless pendant problem

stuck in one direction at slow speed is what happens when you unexpectedly trip the probe, or i think limit switch

check that?
by rk9268vc
Fri Oct 07, 2022 1:46 pm
Forum: Centroid Acorn CNC Controller
Topic: AASD Drive for Spindle
Replies: 6
Views: 1625

Re: AASD Drive for Spindle

spin ctrl.PNG