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  1. E

    replacing bearings in Akira Seiki prototype machine 12k rpm spindle

    Thanks so much for replying. In the images above, you can see a flange part labeled "M50x1.5P" (text is upside down). This flange part was bolted to the flange above it. With those bolts removed, the lower flange rotates a few revolutions, and moves downward as if on threads. I assume it is on...
  2. E

    replacing bearings in Akira Seiki prototype machine 12k rpm spindle

    This Akira Seiki RT-320 is a prototype machine from bankruptcy auction. It came with no manuals. I have contacted Akira Seiki to request manuals, but neither they nor any of the Akira Seiki resellers in the US have manuals for any machine remotely similar. The particular peculiarity with this...
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    Cycle 800 on DMU, is part need to be perfectly at the center table ?

    Ah, 6 months is a while to go without running calibration, aka Quickset 3d. In that amount of time, .005-.008 inaccuracy building up for cycle800 and traori is normal enough, particularly if the ambient temperature has changed significantly. Definitely run quickset 3d on your A and C axis. I...
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    Cycle 800 on DMU, is part need to be perfectly at the center table ?

    You certainly should be able to find your XYZ zero with A and C at 0 degrees, then run cycle800 to rotate A and C for side access and have an accurate workpiece coordinate system. That is the most basic killer-feature use-case for cycle800. If your probe and kinematics are calibrated correctly...
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    Identifying haas lube system fittings

    Don't worry about it; the responsibility is ultimately mine alone. There is so much I'm doing differently, this time around.
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    Identifying haas lube system fittings

    Ferrule is #BB8272, bushing is #BB3783. The story with the 2013 DMU 65 ultrasonic w/ siemens 840d is that it was too expensive and soaked up too much of my capital, which left me no room to accommodate its crazy productivity-limiting issues, such as: a brake-check routine that ran every 8...
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    Identifying haas lube system fittings

    These are them Thank you, everybody. Taking all your info together, I found them. Definitely 5/32 Bijur Tube Fittings. This worked out much better than that time when someone on here suggested I buy a DMG Mori 5 axis machine, shit man
  8. E

    Identifying haas lube system fittings

    This machine uses the Bijur mechanical lube system. Haas has a little bit of documentation on their site, but the connectors in the diagram appear to be newer style. I'm betting that only the earliest Haas milling machines used these connectors. If I figure out what they are, I'll update this...
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    Identifying haas lube system fittings

    My mach4 control retrofit ‘92 VF2 needs a new lube tube and fittings for the X axis. I haven’t been able to determine exactly what kind of fittings these are or what the ID/OD of the tube should be. It’s close to but smaller than 4mm OD. The old Haas manuals I have found just don’t seem to say...
    • erikh
    • Thread
    • Replies: 10
    • Forum: Haas
  10. E

    Finding work for DMU65 idle hours

    Quick update: I did manage to snag a job, but I couldn't quite get it together by delivery deadline. I put heart and soul into it for two weeks, but tolerances failed on the Hexagon arm in one way or another every time. It caught me by surprise because I ran a prototype nearly to completion...
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    Finding work for DMU65 idle hours

    I never tried to justify it; just went and got it. Almost killed me!
  12. E

    Finding work for DMU65 idle hours

    I bought the DMU65 to make my own designs, and it's been a dream for that. We do swords and knives, pipes, gun accessories, jewel boxes for Nieman Marcus, expensive furniture, chain saw parts, PC water cooling parts, and generally an eclectic mix of whatever I think is fun. Before shifting gears...
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    Finding work for DMU65 idle hours

    I bought a DMU65 for manufacturing my products, but demand is variable. There are weeks where it's at 30% utilization. I don't have much overhead - break-even for this machine is about $40/hr + tooling. For soft metals such as aluminum, copper, brass, I have found carbide tooling cost to be...
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    Any reason to bother with NURBS/spline paths on 840D with compression?

    I have a 2014 DMU65 with Siemens 840D SL control. The path compression package came included with the controller, and it definitely works quite well. CYCLE832 + COMPCURV is very nice. Although I have NX 11, I use Grasshopper in Rhino to make 5-axis toolpaths for aesthetic effects with ball nose...
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    The 2014 DMU65 Ultrasonic arrived

    Interesting question; I was also very curious how ultrasonic cutting would sound. The ultrasonic motion is maximized by setting its frequency to match the first resonance of the toolholder + bit, whatever that happens to be, such that the entire toolholder + bit are moving up and down together...
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    The 2014 DMU65 Ultrasonic arrived

    Yup, direct drive with tandem motors on the trunion. The blue part that extends below the spindle emits a magnetic field used by coils in the gold part of the ultrasonic toolholder pictured to somehow cause the ultrasonic motion. I'm not sure if Piezoelectric effect is involved. I'll ask Luke...
  17. E

    The 2014 DMU65 Ultrasonic arrived

    At .0001", NX had some kind of sampling error that resulted in a huge pit in the toolpath. I didn't notice that until I ran it on six pieces overnight. Live and learn. Run time was six hours per grip before I figured out that I could jack the feed through the roof. These days, about an hour and...
  18. E

    The 2014 DMU65 Ultrasonic arrived

    The ultrasonic motion is configurable via frequency and amplitude control up to approximately 10-20 microns of vertical travel at between 10khz and 40khz. Using it for conventional machining seems to be a very novel concept; I learned of it because the local DMG Mori sales guy, Chris Klepacki...
  19. E

    The 2014 DMU65 Ultrasonic arrived

    With .00001" in and out tolerance for curves and without spline output enabled, the program for these titanium grips was over a gigabyte. I pared it down to 120MiB by taking a deeper depth of cut with the 1/8" ball nose used for the eagle. This was actually back on my VF-2, and that's what first...
  20. E

    The 2014 DMU65 Ultrasonic arrived

    A little background: I posted my plan to buy a 5-axis Haas for fabricating titanium firearm components and steel robotics stuff to this forum about a year ago, looking for feedback. Did people who know what they're doing think this is a good idea? After some quick discussion, I settled on a DMG...

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