Updating an old Hardinge AHC w/ Omniturn to something more current

Greetings all! I’m attempting to help out an old friend of mine.
He has a Hardinge AHC with an Omniturn CNC conversion on it. A while back, his shop was hit
with a power surge that damaged the controller and/or computer. I’ve been searching Google, trying to
find out if there’s a practical way to use the AHC, with the motors and all that are on it, but update the
controller, PC, software, etc to something more modern, and hopefully cheaper than going back to Omniturn.
Can anyone point me in the right direction?
Any help would be greatly appreciated!!



Lynx alarm 2064 problem

Okay, I will not go on my usual tirade about Fanuc controls or their bloody manuals. Here is the problem; MDI toolchange—umbrella came in changed tools— ATC retracted—- door did not close, popped alarm 2064 (possibly 2065?) MSG; Waiting for position recognition, and something about the limit switch, or some such nonsense. Mechanically it looks like the limit switch “dog” is not in place in the umbrella (has not rotated completely 180°) But everything is cleanish. The umbrella retracted all the way as far as I can tell. Tried a little banging around, coolant splash, air gun— thinking chips or something, and didn’t get anywhere. I can’t trip the alarm and all the breakers look in place, but if I need to call the guy, I need to call the guy whatever, just checking in to see if you guys know. Funny thing about this story, at the moment that I was trying to figure this out I had two other jobs running in different machines, the boss walks by and asks me what the hell I am doing–I explain and he berates me, albeit sarcastically about not keeping the other machines running while I fix this one.

Thanks guys, Robert

Siemens SIMODrive 611 Parameters

I have a Siemens SIMODrive 611 controlling the axis and spindle in my Bridgeport VMC-800. The drive controller sets a spindle fault any time a target speed increase of about 200 rpm is requested above 1000 rpm. I have tracked it down to the 600V DC Link supply being hammered by the spindle controller. See the picture below. The machine is being powered by a phase converter with a 20hp idler. I have not been able to look at the incoming power at the HV power supply while triggering on the DC Link dropout. I believe I will need a true differential scope probe to effectively do that.

1) Is there a parameter that can be changed that would reduce the required instantaneous current for the spindle drive? Possibly slow down the acceleration rate? After reading the manual for the drive there appears to be hundreds of parameters but I have no idea which one would help.

2) If the parameters will not help, would one of the capacitor modules be enough to eliminate the error?


Turning / Chamfering behind a larger diameter with a D or VNMG using G42

Hi all!

I thought I’d pose this question, as I do not know the “correct” or accepted way of programming when you need to turn or chamfer behind a larger diameter, and predicting EXACTLY where the chamfer would start. (typically we err on the Z- side, and tweak the start position to bring it in)

Example: A Ø1.5″ bar, with a Ø1-14 threaded end of a shaft with a 45° thread relief/ groove behind the thread, on a Haas.
(I’m going to long code out the finish path, below)

N….blah blah blah (ruff turn/face)
N…(groove thread relief)
N…T0202 (VNMG331 fin turn, tip direction 3, R .0156)
G00 G99 G97 S1500 M3
X1.5 Z.1
G96 X.903 S750
G1 Z0. F0.01 G42
X.993 Z-.045
Z-.875 (where the chamfer SHOULD start)
X.903 Z-.92
X1.55 Z-1.05
X1.65 G40
G97 S1500
G00 X12. Z6.
N…blah blah blah (thread)

1) tool is tagged off and described correctly
2) see # 1
3) nothing has moved during machining

When I gage where the chamfer ACTUALLY starts, it is not REALLY at Z-.875
Is there some secret trick to predicting the exact transition point from straight to 45° will be?
Am I programming this feature correctly for a tip 3, using a G42?

Or am I just totally ignorant, should give up / marry a rich woman?



Free CNC learning for Beginners.

As most of you know, I have been teaching CNC lathe and mIll programming, setup and part production as a totally selfemployed trainer since even before Fanuc became the standard of our industry.
My website is visited by shop guys from around the world, almost everyone would love to be better at all parts of CNC.
I have a CNC DVD called CNC Partmaking that is a condensed version of almost all CNC skills and posted it on YouTube to be studied for free.
Put “Heinz Putz, CNC Partmaking” into Google, click on any section of my DVD, then on the others.
Start learning and write back with any question.
Heinz Putz, doccnc.

dnc from android tablet

are there any apps for android that support rs232 transfer directly from a tablet or smartphone using a mini USB to serial adapter? everything I see is basically a remote to control the networking in your shop so you don’t have to walk back and forth from computer to machine and the tablet isn’t actually doing the transfer. I don’t have my machines networked that way. I’m still doing it the old fashion way, carrying a laptop to the machine. This suits my purpose just fine, but I would just rather have something a little more compact. full DNC and backplotting would be a plus, but not necessity.

Rockwell EFI drill press questions

First off Merry Christmas to everyone

Now for the question, I picked up a Rockwell EFI drill press today without seeing it run. It was cheap enough and I was told it ran. It is a Model 2T geared head, 4 MT spindle, power feed, selector switch for drilling / tapping, foot selector switch for Fwd / Rev. Well I got it back to the shop and there is electrical issues. It seems as it is not getting the power. The tag say 230 volt 1.9/1.3 HP motor. 3phase. I tried a few things and what it boils down to is I was wondering if anyoine here has messed around with one of these. I see on the tag it says made in Portugal. I googled and found out that they were contracted by Rockwell, Doall and originally I think was called a Startrite?? Please tell me if I am wrong. If anyone has any info or a manual I would be happy to purchase. Thank you and like I said Merry Christmas and Happy New Year Mike

Small Threads on an HLV-H

Inspired by Rivett608’s thread about making small screws (see Why does steel split like this? Very small parts.), I had to see if I could cut such a tiny thread – M0.7 x 0.175 – on my HLV-H

The closest I could get to 0.175mm pitch, without buying another gear, was 0.1778mm.

I had to dig out my wonderful Russian Lomo microscope to check the cutting tool edges (where do you get super fine abrasives for this type of sharpening?) and I broke several part threads before realising I have to make a close-up steady rest.

Not really up to Rivett’s standards, but this is my first attempt with the steady (see attached)

(it looks like I cut it a little too deep )