Attn adaptforge

[jetpig1]

Your PM settings have locked out replies, so here is your reply:

Heck yeah , I have a bunch of mods and designs I have been working on. I have moved to Arizona, so I am just now getting shop set up.

I have designed inline motor mount plates for the Dyna 2400, I still haven't installed all the Automation Direct stuff yet, ( many projects going on..) but I have added coolant, a probe and the Lil Bumble Bee cuts just great.

What can I help you with ?

Cheers,

George

[Fastest1]

What kind of 2400 mods you doing? I am about to put mine in the garage soon.

[jetpig1]

I am just replacing the motor mount plates, drive setup, installing high torque steppers, high res drivers, and transformers to boot. Also, I will be finishing my 4th axis rebuild with a zero backlash planetary drive, and a very precise bearing race setup.

Let me know if I can be of any assistance

Geo

[Fastest1]

Are you going to couple the steppers direct to the screws and eliminate the gear reduction? I am wanting to do that to the Z on my Dyna lathe also. Somewhere here I have seen a very extensive mods being done to the 2400. Seemed like very good work.

[jetpig1]

I had used timing pulleys, but keeping the ratio at 1 to 1, as well as aligning the centerline of the motor and leadscrew(easier on the motor bearings) seems to be simple and strong. I am using NEMA23 high torque motors from Automation Direct, and in combo with their drivers and transformers are a kick ass very accurate setup.

[Fastest1]

Are you the 1 who built new motor mounts? If yes, why did you retain the timing pulleys at all? I would like to go direct to the screw. I am running the stock steppers at the moment though a Gecko g540 is controlling them on a 48V power supply. If I see the steppers are too weak, I wouldnt hesitate to go to new steppers. I really havent had time to pull mine apart and analyze the approach to resolve my perceived issues. I do know the machines are extremely well built for their time. The difference between it and my Sherline are night and day (not knocking the Sherline but it comes down to weight and rigidity). I am actually looking at building the Joe Vicars automatic tool changer for both mills.

[jetpig1]

I have designed 2 plates now, one for pulleys, and one is a two piece for direct drive with o-ring seals on all sides. I am just now putting the 2 piece ones into use. All were designed on solidworks and cut in surfcam, so if you would like geometry, let me know.

I really love my Dyna, the weak link in the chain now is the .4 hp 5000 rpm motor. I intend to go to a reverse-able higher torque unit when I can find someone who makes one.

You can actually turn different pulleys on a lathe and get 20K on the spindle. I did check spindle bearings and they are P4, rated to handle the speed very easily. The other option is to look at getting a rewind and rebuild on the present motor and replacing the controller entirely.

I have DeskCNC, which allows a PWM to control speed on the spindle, but I need an updated motor controller.

Cheers,

Geo

[Fastest1]

Actually I am using a Bardac for speed control of my lathe motor. I have no need for 20000 rpm on my lathe, that I know of anyway. Regarding the mills spindle motor, I figure if it goes south I will adapt a Sherline spindle laying around and use any motor I want. It would be easy to cut the dovetail in the Sherline spacer blocks to fit the DM2400. I will have to look at your posts and see what you have. Got any pics of that 2 piece mount?

[jetpig1]

Drop a line, I can send you prints and pics

Cheers,

Geo

jetpig1@aol.com