Looks like a nice sold machine, never knew Dyna Myte made big machines.
Looking forward to seeing the progress.
Hood
Have you moved the Z all the way up yet? It doesn't look like you would have enough clearance above it for 20" of Z!
There is a guy on cnczone (caprirs) who used to work for Dyna Mechtronics and He seems to know alot about them.
I am guessing you have the Meldas 2 or 3 on this machine. I think all the DM4800's I have seen have had rigid tapping on them.
Nice machine and I know it will be even nicer once you are done with it!
The only thing remaining to remove is the 5 year old boy who thinks this is his new play house…
Looks a sturdy machine. As far as I know these are re-badged Leadwell machines. Correct me if i'm wrong!
Looks like a hefty spindle motor.
John
You're welcome...great project!
Is it 40 or 50 taper?
John
Are you going to be using the PP? What drives will you be using?
Hood
JH are you going to use a PLC for the ATC this time or are you happy with the approach you used on your previous mill?
I appreciate you taking the time to post your efforts not only because it helps others to learn but because it is inspires many
people to complete their retrofits.
Keith
fot toolchange if you can use PLC, i think is better and safer
mach run in windows and it not safe %100
Amir
Another thing about mach which can be a disadvantage is the way it homes. The big machines have a slow down sensor so you can go at full rapid speed to this then slow down to a set speed to home the machine. Handy if you have big travels. Mach doesn't work with a slow down as far as I know.
Hi Amir
I'm using the older 2100 series which is on Ethernet. I would recommend an econo series for a new purchase. The latest accellera is the best card if money is no object.
John.
HI JH,
Congrats on geting the toolchanger rotating!
I have (3) Vmc's with the carousel toolchanger and none of them have a home switch for #1 position. They rely on setting the carousel to the #1 position to start and a bit system to remember which tool is in the spindle.
Did you use a home switch on BP carousel?
JH,
Wow man you are simply getting WAY too good at this stuff. You need to start a build a CNC machining center class or something....haha I would be in the front row dude!! Nice looking machine you have there. I have seen a couple of them come and go for good prices but knew nothing about them. Good luck on this build, I doubt you will need it. Peace
Pete
HELP
i just purchused a dm4500 1995 im having trouble getting this machine to do anything in mdi memory.I can zero return it i think but thats it ive talk to the original owner it was running about 4 months ago replace the battery and restarted the process really need help im in ma. NEED HELP
WAYNE
508 6413239
Our new test servo from Mach Motion just showed too. This is the HIGH torque version, 85in/LB holding with 254in/LB Peak, 1000W AC Servo… I hope to have some good news on this real soon.
Thanks,
JH
JH,
Hey man that is looking BEEFY!! So those are new motors them? I love the looks of the dual ways underneath that table. This should be a real stout machine when it is finished. So are you using MACHmotion parts or control on this machine? They seem to have nice stuff but it is expensive... You mentioned Teco drives, that is the servo drives for the axes right, I have had very good luck with my Teco Sensorless Vector drive here especially since it is under modbus control. I would not hesitate to buy their products again. If you are indeed looking at new servos and drivers for each axis, about how much money per axis are you into it for? I am watching and learning here man and hope to someday follow in your prodigious footsteps with my own VMC conversion. It sure does look like a lot of work tho. Good luck with this baby and I cannot wait to see some videos of cool parts being machined on it. Peace my friend...
Pete
Looks great JH. How do the new motors compare to the originals speed and torque wise. They look smaller but the newer motors can produce more power from a smaller frame size I presume.
John.
Ive got a 1995 dm4500 w/ a m3 control i m not sure if it can rigid tap.an or does anyone how to tap in this machine
Sounds like they are working out well. I think you may be fine if its anything like my lathe, the motors on that were monstrous, cant remember the exact specs but they were big.
What kind of accel are you getting out of the axis?
Hood
JH,
Man that is kinda steep but quality costs sometimes. I assume these are mostly plug and play right so should be well worth it. Does it come with cabling and whatnot for it as well? Are those motors coolant proof? I guess $3300.00 for all three brand new motors and drivers ready to rock on a nice VMC like this will be money in the bank if you ever have a problem with any of them. It really looks like the biggest difficulty of these conversions is the damn toolchanger huh. Gotta have it but all those sensors and logic settings are gonna be difficult and time consuming I would imagine. You make this stuff look way too damn easy my friend. BTW, I had a guy come to my shop today with a Harley Davidson and I tig welded some brackets he broke on his frame that hold the saddlebags and exhaust on. It was pretty cool and I thought of you and your cool Chopper shop while I was working on it. That was the FIRST Harley I have worked on... haha Peace
Pete
Do the X and Y need to be the same for the linear interpolation to function correctly? I wasn't sure about that. I have always had it the same on my other machines.
Thanks,
JH
Joel,
Are you going to use a spindle mounted encoder to orient the spindle for the tool holder locking lugs or
are you planning on another method?
Thanks!
Keith
Looks great JH. How do the new motors compare to the originals speed and torque wise. They look smaller but the newer motors can produce more power from a smaller frame size I presume.
John.
John,
The new Servos and stock Servos are not 1:1 The stock ones are rated at 2000W a 17 N/m while the new ones are rated 1000W 9.5 N/m (28.6 N/m peak). I have demonstrated that I can run them at 1300RPM without an issue and this agrees with the torque/speed chart thus pushing the wattage to ~1400W. I am also counting on the fact that the engineering that went into the stock design was over designed by at least 25 percent.
Only time will tell if I have chosen to small of motors for this Machine. I think I am on target for my intended usage and duty cycle of the machine.
JH
Marty you could reuse the original amps and motors if you used one of the controllers that can send out analogue commands.
DSPMC
CSMIO/IP-A
Galil
Kflop/Kanalog combination
Hood
Most Industrial CNC mills/lathes etc require the control to output +-10v analogue command, the control receives position feedback from the motors encoder or resolver and the amplifiers need a speed command from the motor, often a tach or encoder.
If using one of the above they would put out the command voltage required by looking at the feedback. If your motors have resolvers then you would need to fit encoders as all of the aforementioned controllers require encoder feedback.
Hood
Curious JH, where are you with the progress of your DM 4800 conversion?
Thanks
Marty
Why do you say they could not be reused?
Were they knackered or?
Hood
Ok, looks like they are unusual then and likely no use for Marty to reuse. Did they only accept commands via that bus ?
Hood
JH, how tall is the 4800 with the head all the way down? Will it fit through a 7' door?
JH, how tall is the 4800 with the head all the way down? Will it fit through a 7' door?
On the 4800, the Z Servo needs to be removed after the head is lowered. Then it will fit under an 8 foot door. Its BIG.... 12,000 lbs too
8 foot door for sure. If your drives are 3 separate units, I think they can be configured for step dir. This would save you a ton of time an money.
Find the specs on drivers, I'll help you find the data sheets. I did hours and hours of research on all Mitsubishi drives.
8 foot door for sure. If your drives are 3 separate units, I think they can be configured for step dir. This would save you a ton of time an money.
Find the specs on drivers, I'll help you find the data sheets. I did hours and hours of research on all Mitsubishi drives.
8 foot door for sure. If your drives are 3 separate units, I think they can be configured for step dir. This would save you a ton of time an money.
Find the specs on drivers, I'll help you find the data sheets. I did hours and hours of research on all Mitsubishi drives.
It looks like your servo amplifier is the same as mine, just maybe a lower power version. I thinks its the 3 AXIS Integrated version that was not easy to interface with Step and Dir.
All Manuals can be found here:
http://www.meau.com/eprise/main/sites/public/Downloads/Manuals/default
The current plan is to use the built-in encoder on the spindle motor with the stock FREQROL-SF VFD Drive.
The original FREQROL-SF VFD had a SF-DA (Speed Reference and Magnesensor Card) to interface with stock MELSAS CNC Controller and stock Magnesensor. Since the MELDAS CNC controller is being replaced with a Mach3 PC, this SF-DA interface card has been removed from the FREQROL-SF VFD SF-CA mother board and the Magnesensor will not be used.
To date I have successfully removed the SF-DA card and updated the jumper settings and parameters on the SF-CA mother board to test the unit in a Stand-Alone Mode. Using simple dip switches to test and interfaced to an old wire-harness, I can take the unit out of eStop to charge up the DC Bus and turn on the spindle fan, enable to unit, run forward/reverse, and adjust the speed with a 10K potentiometer.
The same wire-harness has connections for spindle orientate switches and its position location is configurable with parameters on the FREQROL-SF VFD mother board. I have not prototyped up the connections or studied the parameters to test. I am hopeful that this will work… I need to get a large block of time allocated to fully study this and test at one time.
Thanks
JH
Not being well up on rotary phase converters could you run the whole machine off one? Would save doing a retrofit..
The current plan is to use the built-in encoder on the spindle motor with the stock FREQROL-SF VFD Drive.
The original FREQROL-SF VFD had a SF-DA (Speed Reference and Magnesensor Card) to interface with stock MELSAS CNC Controller and stock Magnesensor. Since the MELDAS CNC controller is being replaced with a Mach3 PC, this SF-DA interface card has been removed from the FREQROL-SF VFD SF-CA mother board and the Magnesensor will not be used.
To date I have successfully removed the SF-DA card and updated the jumper settings and parameters on the SF-CA mother board to test the unit in a Stand-Alone Mode. Using simple dip switches to test and interfaced to an old wire-harness, I can take the unit out of eStop to charge up the DC Bus and turn on the spindle fan, enable to unit, run forward/reverse, and adjust the speed with a 10K potentiometer.
The same wire-harness has connections for spindle orientate switches and its position location is configurable with parameters on the FREQROL-SF VFD mother board. I have not prototyped up the connections or studied the parameters to test. I am hopeful that this will work… I need to get a large block of time allocated to fully study this and test at one time.
Thanks
JH
Marty,
I used my lathe to generate the 3rd leg to test FREQROL-SF VFD, running it on rotary should be fine. You will have to reconfig it as I did above for stand alone mode.
The servos are AC Brushless.
When are you starting your thread ? Now that you committed !!!
JH
Are rotary converters not usually pretty well balanced? Thought that was the idea of having the motor so it put out true 3 phase rather than the two that a static will.
Hood
I love the "pride" you put into your work JH.
It's funny how I'm thinking to myself, "hell, I'd be glad just to be making parts on this monster, lol!"
Always enjoy seeing your work-
Dave
JH, what kind of paint are you using and how are you applying it? What sort of prep work did you do before hand?
Nice work so far!
Marty
Good work JH. How are you doing with the axis servos...I noticed you had to downsize the motors to stay with the single phase power supply. Do you think they will be powerfully enough to move that big bed and cut metal at the same time.
I managed to get a 1.5kw single phase Yaskawa drive and motor. The new Sigma5 is very compact..I got a new old stock Sigma 2 drive and a 8nm 1500rpm sgmgh motor..its a real beast of a motor for a single phase unit! Not cheap though..the sigma5 motor/drive is about 1800 gbp.
Can you add a picture of the way cover between the table and Z axis? I need some ideas for my mill.
Great work as always!
Looks good, Joel.
Question for you, do these have a "wiper" in them of some kind, or are they just metal -to- metal scrapers?
Dave
Way to recycle Joel! Nice work so far...
Marty
Just wish I could be there to watch you work, Joel-
Dave
What are the approximate dimensions of your cabinet Joel? Keep up the good work.
Marty
How are you coming on the control and spindle drive?
Cool looking panel. Where did you get the buttons?
Dan
Joel, stopping in to say hi and how is the DM4800 coming along? Did you stall out or?
Marty
hello
I have a DM 4500.The lcd screen wont turn on, and the boards on the side of the power supply are showing red on the leds insted of green does this mean the power supply is gone...Any help would be great