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Re: New Build LMS 3990 Hi Torque Mini Mill
Posted: Thu Mar 28, 2024 7:39 pm
by cncsnw
As I travel 6 inches the DRO reads 11.9955
You need to double your revs/inch value, so that the control expects to need twice as many motor turns to go a given distance.
Re: New Build LMS 3990 Hi Torque Mini Mill
Posted: Thu Mar 28, 2024 8:57 pm
by cdiseker
Yeah, I'm probably nitpicking at this machine to try to get it down to +-1/10,000 of an inch. Lol.
Re: New Build LMS 3990 Hi Torque Mini Mill
Posted: Fri Mar 29, 2024 4:14 pm
by cdiseker
Still not getting close enough. I'm plugging in micro numbers and now getting 6.6647 per 6.0000 inches. Any more ideas on hoe to get the adjustment right?
Re: New Build LMS 3990 Hi Torque Mini Mill
Posted: Fri Mar 29, 2024 4:40 pm
by dpascucci_support
0.6647" off a 6" move is still quite the distance away. What are your current steps/rev and rev/inch values? The general formula for dialing in revs/inch is: commanded / distance moved = multiplier. Then multiplier * current revs/inch = new revs/inch.
Re: New Build LMS 3990 Hi Torque Mini Mill
Posted: Fri Mar 29, 2024 5:13 pm
by ShawnM
Post a current report from the machine please.
Re: New Build LMS 3990 Hi Torque Mini Mill
Posted: Fri Mar 29, 2024 5:45 pm
by cdiseker
So I went back and listened to his video again and again. I got the formula figured out, wrote it down and now the X is 5.9999 over 6 inches and the Y is 3.0003 over 3 inches.
I don't think I can ask for more out of this little setup. Next...the dreaded Z axis.
I needed this victory!
Re: New Build LMS 3990 Hi Torque Mini Mill
Posted: Fri Mar 29, 2024 5:51 pm
by cdiseker
ShawnM wrote: ↑Fri Mar 29, 2024 5:13 pm
Post a
current report from the machine please.
as requested...
Re: New Build LMS 3990 Hi Torque Mini Mill
Posted: Fri Mar 29, 2024 9:10 pm
by ShawnM
Food for thought, Centroid provides a tech bulletin on how to properly set up your turns ratio that is current and updated as of February of 2024. You are watching a video that is 6 years old and not really that relevant to today's software or apparently easy to follow. All that was needed was a search of the Centroid Tech bulletins and it would have turned up this document for you to follow but glad you got it working.
https://www.centroidcnc.com/dealersuppo ... ds/36.pdf
You also have communication errors in your system, lots of them. Another tech bulletin to look at is TB270 to help fix those issues.
https://www.centroidcnc.com/dealersuppo ... ds/270.pdf
Re: New Build LMS 3990 Hi Torque Mini Mill
Posted: Sat Mar 30, 2024 4:23 pm
by cdiseker
ShawnM wrote: ↑Fri Mar 29, 2024 9:10 pm
Food for thought, Centroid provides a tech bulletin on how to properly set up your turns ratio that is current and updated as of February of 2024. You are watching a video that is 6 years old and not really that relevant to today's software or apparently easy to follow. All that was needed was a search of the Centroid Tech bulletins and it would have turned up this document for you to follow but glad you got it working.
https://www.centroidcnc.com/dealersuppo ... ds/36.pdf
You also have communication errors in your system, lots of them. Another tech bulletin to look at is TB270 to help fix those issues.
https://www.centroidcnc.com/dealersuppo ... ds/270.pdf
Thank you...I'm looking now.
Re: New Build LMS 3990 Hi Torque Mini Mill
Posted: Tue Apr 09, 2024 3:11 pm
by cdiseker
Hey folks.
I got my backlash corrected on my X axis. Doing my Y axis now.
I have about 0.010 preload on my dial indicator. When I move my Y axis every 0.020 the dial indicator does not move then jumps and I hear a "click" type of noise. When I travel 0.100 total the dial indicator reads total distance of 0.600.
Could there be debris/shavings in the leadscrew from the install?