Can you post a few pics of the mill in position. Nice idea with the castors. Will do the same to mine I think . What kind of rapid feedrates are you getting on the machine?
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Can you post a few pics of the mill in position. Nice idea with the castors. Will do the same to mine I think . What kind of rapid feedrates are you getting on the machine?
Ill take some pics of the wheels this weekend.Quote:
Originally Posted by fidia
Feedrates, about 2000mm/min at max before I see PID issues but I dont believe ive tuned the new motors properly. I need a laptop with a serial connector for the software and 2 attempts to use either a USB cable or PCI to Serial connector havent worked.
That said, 2000 is plenty for most operations. I need more spindle rpm / power now ideally as most of my stuff is Alu.
Quote:
Originally Posted by Chaz
If you could post some pics of the mill too that would be great.
The 10000rpm spindle on the new Tormach 440 would be really nice on the Denford. I have emailed Tormach to see if it is possible to get one as I would like to fit to my Triac.
Sorry, are you looking for info or advising me?Quote:
Originally Posted by uli12us
I can post pics on the weekend, anything specific you need? There is also a drawing on the Denford main forum that shows how the bits fit together.
Some here:-
http://www.denfordata.com/pdfs/triac..._600dpi_hq.pdf
and
http://www.denfordata.com/bb/viewforum.php?f=47
Some pics below. A bit rushed this weekend, let me know if you want pics of anything specific.Quote:
Originally Posted by fidia
Thanks
https://c2.staticflickr.com/6/5744/2...c6ee2732_b.jpg
https://c1.staticflickr.com/1/709/22...380e6efb_b.jpg
https://c1.staticflickr.com/1/610/22...4a0c93da_b.jpg
any update on your build did you finish the atc conversion?
Hi,Quote:
Originally Posted by xiteamxi
Yes, its fully working with Mach3. Id like to redo some of the wiring but its working as needed. Ive since installed an AC Servo spindle as the DC motor wasnt working well.
Any details on the servo conversion?
I've currently got mine in bits, and am currently working on the finer details of how the servo is going to fit.
Ye, Ill share some stuff when I get home. I had to do a fair bit of test fitting due to the constraints of the physical space. I am using a 1.5KW Panasonic servo.Quote:
Originally Posted by m_c
So you have upgraded the spindle to a Panasonic one? How does it work with atc?
I'm gagging to upgrade my spindle, I've got money just no options
Yep. It works well. I dont use my ATC often but functionally it works. I can do some improvements to it for fine tuning but the machine is now running at minimum as good as it would have when new.Quote:
Originally Posted by andy_con
Where are you based? You are welcome to come look at the bits.
So spindle speed? How have you got it to work?Quote:
Originally Posted by Chaz
What kind of setup?
The triac has a slightly different atc seti
Up the. Most with its spindle and powered draw bar
I'm in Essex?
Direct motor replacement, 4400 rpm due to slight change in gearing.
Im in West London - UB108TE, feel free to pop around, Im home Saturday if you want to see my mess.
Ill take some pics anyways to share.
What did you end up with an m6 macro for the atc? Any chance you could post it up?
Not knocking ya build or anything but triac comes with a 4000rpm motor so that's not really an upgrade.Quote:
Originally Posted by Chaz
I want to min of 10000rpm
What electronics do you have? I'm assuming your running mach?
I have full drawings to upgrade the atc to 10 tools just never got round to making it. It's just a new disk/bit that holds the tools and stepper motor to spin the disk
It wasnt meant as an upgrade. It was meant to get me up and running again. The DC motor was failing and I had to make do with something as I am using the Triac to make parts for my new machine.Quote:
Originally Posted by andy_con
10K is possible, of course, but its a fairly big undertaken and not a 'hot swap' like what I did.
I am running with CS Labs - Mach 3 - Servos all round for all axis.
ah fair enough, ive had issues with my motor and still do to be fair.
I put mine in for a £500 repair which hasn't really done a lot, so wondering if its the sprint drive card.
indeed 10k is possible its just finding a suitable replacement atc motor. id settle for 18k or 24k providing its an atc model.
mines a standard triac, so normal stepper motors, ive got PMDX126 in there, with ESS. I out in spindle feed back and have touch probe and z height setter wired in.
but my goal is a new atc spindle and then ill finish the electronics with new stepper drivers and out 10 station atc in
I had an initial bit of code provided however it did not work. My code is poor and doesnt care for the status of limit switches or even counting of the ATC. It does however work so can post.Quote:
Originally Posted by xiteamxi
Im selling my Sprint 1220i controller if you need a replacement.Quote:
Originally Posted by andy_con
how much?Quote:
Originally Posted by Chaz
I really want a new spindle set
They are around £270ish new, Ill take £100.Quote:
Originally Posted by andy_con
Space is certainly a challenge with triac spindles.
Andy, what is wrong with your spindle motor/drive?
Mine started hesitating and making what's probably best described as a rumbling noise, followed by tripping the RCD at higher speeds. I took the brushes out, and there's signs of arcing on one of them, and another was sticking in the holder, but giving them a clean never made any difference.
The armature isn't that clean looking, however I won't be able to get the motor apart without using heat to get the pulley of, and I suspect the real problem lies with the drive. For it to trip the RCD, there's either got to be an excess build up of carbon inside to give continuity between the brushes and the case, or the SCRs on the drive are starting to breakdown and shorting to GND.
From past experience with my old lathe, the rumbling noise is consistent with a faulty drive.
If you want a new replacement DC drive, KB Electronics drives aren't that expensive. For basic speed control, a KBIC would work, or if you want to keep the tacho feedback, a KBMM would be needed. You'd also need to add the extra heatsink for either option to get the rated power capacity.
Axis Controls are one of the UK distributors, who I'd happily recommend as they've always been helpful when I've used them - http://www.axiscontrols.co.uk/shop/kb-electronics-dc
I think I'll go and start a new thread about my replacement plans, as I'm umming and arring over the design.
Better then what i've come up with so far i'm sure, if you get a chance to post it id appreciate it,or if anyone else has a working m6 atc macro..Quote:
Originally Posted by Chaz
Send me a PM with your email address so I can also explain a few bits about it.Quote:
Originally Posted by xiteamxi
These are around £270ish new. The 1220i which is 12A, isolated input.Quote:
Originally Posted by m_c
http://www.sprint-electric.com/products/340i
Im selling my one that I no longer need for £100 if interested. Din Rail mount, nice and tidy.
http://www.sprint-electric.com/images/340i.png
bit of a thread hijack sorry.
so when I got the machine it turned on and worked, but every time I started the spindle it tripped the RCD. I notice straight away the main fuse on the sprint drive card had been bridged, so assuming it was a known problem.
after many hours of faffing I took the top cover off the sem motor and it was filled with burnt carbon from the brushes. after a really really good clean and hoover, it worked and didn't trip the rcd.
I also replaced the brushes in the side of the sem motor just for piece of mind.
a problem since I had the machine is you start the spindle at say 3000rpm and it starts to jump around going up and down, by like 300-400rpm. so sent it away for a £500 refurb and it hasn't fixed the problem just changed the problem. now days when I set the motor to 3200rpm, it will go to that speed then after about 10 seconds jumps to 3800 where it will just sit until turned off. its not a big deal I have live spindle feed back so I can account for it, but it shouldn't be doing it.
Quote:
Originally Posted by m_c
I'm sure I searched for sprint drives, but never got any results.Quote:
Originally Posted by Chaz
That does look like a good option, especially considering the isolated controls.
I have full triac m6 macro
Quote:
Originally Posted by xiteamxi
That does sound more like a tacho or drive fault. Have you tried monitoring the tacho voltage, to see what it does when the speed changes?Quote:
Originally Posted by andy_con
If the tacho voltage is increasing with the motor speed, then it's most likely a drive fault, but if it drops first, then there's a tacho problem.
I haven't no, you could spend more time trying to fix these machines than machining
Quote:
Originally Posted by m_c
I had similar issues. Brushes need to be clean and carbon free (And clearly not worn out). I stripped the motor down as far as I could and found that previously someone had put some putty on the wingdings. I Can only assume the motor had basically started to fail and this was a 'plaster' to keep it going.Quote:
Originally Posted by andy_con
I would only get around 30% of full current before the motor would stall. It would then overheat and start smoking from the brush area.
I triple checked the setup and verified with the supplier of the drive (they were really good) - KEITH SANSBY <[email protected]> . So clearly the motor was the problem. Symptoms also included 'hunting' around high speed and any loading would make it worse.
I've just got to say, that typo made me smile :-)Quote:
Originally Posted by Chaz
Did you get any pics of how the servo fitted?
LOL, I saw that after too but left it.Quote:
Originally Posted by m_c
No, but will sort. I do have some older pics, lemme see if I can find them.
Attachment 21200Attachment 21201Attachment 21202Quote:
Originally Posted by m_c
Difficult to show with existing pics. Ill take a vid on the weekend.
Tight squeeze, had to remove some material for it to fit and a pic of the bracket used.
That's certainly a tight fit.
Any idea what size flange is on the motor?
I think a 100mm flange motor would squeeze in, however I couldn't find any with the power I was aiming for, so opted for a 110mm motor, and spacing it up.
Ill share the sizes tonight. Ive got the original flange drawn up as well as the info on the Panasonic 1.5 KW servo.Quote:
Originally Posted by m_c
The plate that goes across for the DC motor is 115mm x 110mm (Depth).Quote:
Originally Posted by m_c
The motor mount bolts are 81mm across from C to C. The recess flange is 100mm.
This is the motor mount for my Thor machine Y Axis (same motor as used on my Denford for spindle here).
Attachment 21207
Hi Chaz,
I have just acquired 1/2 of a TRIAC VMC today so will follow your threads with interest. The Miller was going for scrap. Unfortunately I don't have the controller or a schematic but do have the monitor/PC, not that I think it of much use on its own. I have to decide if the miller is worth the time of effort to "upgrade". Even with the latest electronics/controllers its not as simple as plug and play. I agree its heavier than it looks. The C of G is not where you expect it either. The lifting eye on the top gives the game away.
I noticed your post over on the Denford forum earlier.Quote:
Originally Posted by robertpearce4
Without the control box, there will be a lot more wiring needed done, but there's nothing insurmountable if you really want to get the machine running.
From the photos you posted over on the Denford forum, you've got a BT30 spindle (it's got an 8 position tool changer), and stepper motors.
Ultimately to get it running, you'd need 3 stepper drivers (plus suitable power supply), a spindle drive, some form of controller, and lots of relays.
If you do decide not to keep it, I'd be interested. I've got a BT35 spindle version, but would quite like a BT30 version as toolholders are far easier to get, so I could swap the required bits.
Hi Chaz,Quote:
Originally Posted by m_c
Thanks for your quick reply. I obtained a battery powered folk lift truck (FLT) from the same source...with 50% of the battery's shot. I used the FLT to move the miller with the aid of some deep cycle battery's. I need to do a little more reasearch on the cost, time, effort, choice of controllers + do I need a miller....etc before I write it off. My current urgent need is to buy a small metal lathe (Viceroy) off a friend in Magor now that I have 3 Phase on site.. Dare I ask what its worth to you? Can you swap the toolholder easily between machines? Yours for mine? I don't need this functionality and it probably complicates the control electronics. BTW I am near Welshpool. You would need to collect. There is a slim possibility the controller is about in the factory it came from. I need to have a search now I know what I'm looking for.