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Type: Posts; User: footpetaljones

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  1. Re: buying PCNC 1100, am I asking too much?

    I would suggest checking if it can be adjusted out mechanically first, but backlash can be compensated out in PathPilot/LinuxCNC by adding a line to the AXIS section of the INI file with BACKLASH =...
  2. Replies

    Re: Brother TC-S2A 4th Axis?????

    I can gauruntee that Yamazen will tell you not "no" to but "hell no" to bastardizing a 4th axis together for an obsolete machine. Even if you find a factory 4th for it, I'd be surprised if they would...
  3. Re: Communicating Tormach tool number to robot

    I would imagine you have Modbus on the robot, correct? You could modify the HAL file to enable mb2hal and send the iocontrol.0.tool-number signal to a register.
  4. Replies

    Re: Nico's PM-25 CNC Build

    The Novakon pulsar has a sheet metal cover for its Y axis you can buy for $85. You could see if they'll give you a drawing of the flange to see if it will fit.

    Another option would be shielded...
  5. Replies

    Re: Brother TC-S2A

    Sounds like a dead power supply. Check for voltage coming off of its taps. If none, check the input voltage. If it's dead, find a suitable replacement from its supplied voltage and amperage output....
  6. Replies

    Re: How Is This Possible?

    Sand casting, investment casting, or metal injection molding are all possibilities.
  7. Re: Benchtop/ Jeweler's precision lathe build

    The spindle is one thing I would not try to DIY with the accuracy you want. You can certainly get a shaft to the right dimensions without much equipment, but do you have any way to grind a tube, flip...
  8. Replies

    To be fair, everyone does. Want to add a 4th axis...

    To be fair, everyone does. Want to add a 4th axis to a Fanuc mill? Fanuc will charge you $750 minimum for their tech to come out, **** around on his laptop for 2 hours, then spend 20 minutes loading...
  9. Replies

    Re: Hydraulic PDB?

    Before looking at hydraulics, why not add a pressure intensifier to the PDB? SMC makes one that boosts 4x that is around $250.
  10. Replies

    Re: BT30 Drawbar Rookie Question

    On the machines I've worked on:

    1. Never seen preload set by springs. Always a spacer.

    2. Drawbar doesn't seal on the pullstud. The outside of the gripper has an oring to prevent coolant...
  11. Re: Robodrill Machine Frame DIY mill Build

    I'm 99% certain that the frame is not from a Robodrill. As far as I'm aware, Fanuc has never used BK style bearing blocks, they've always been mounted in a casting that the motor bolts to. And the...
  12. Replies

    Re: BT30 Drawbar Rookie Question

    I have an Austrian made Emco F1 that has a BT30 spindle without drive dogs. Emco even made tool holders without drive dogs for it.
  13. Re: Need help brainstorming a solution for this mill turn spindle

    Doh. Apparently I can't math this week.

    .005 degrees per pulse.
  14. Re: Need help brainstorming a solution for this mill turn spindle

    I don't know what type of motor he's using in the instagram post.

    By <.0001 degrees, I was referring to the DMM servo. Servo encoders are usually classified by 2 to the power of "XX" steps per...
  15. Re: Need help brainstorming a solution for this mill turn spindle

    One example: https://www.instagram.com/p/BsCHjVMoCQv/

    Another vote for DMM. The 1.8kw 120-DST-A6HK1 with a DYN-4 and cables will be around $700. Resolution under .0001 degrees and a 24VDC brake.
  16. Replies

    Re: Toolchanger vs Multipart /Offsets

    Drive dogs are nearly universal, but not required for BT30.
  17. Re: How important is your floating end, really?

    As one data point, the Y and Z axes of Robodrills have a floating end on their ballscrews, roughly 36" long and 16 or 20mm (can't remember). The floating end has a Nachi deep groove ball bearing that...
  18. Replies

    Re: Large Epoxy granite VMC building

    Your mount looks more complicated than it needs to be. Most commercial machine tool builders basically bolt an angle plate to the column casting.
  19. Replies

    Re: PathPilot fix?

    You set your steps per degree on the SCALE line of the A axis (AXIS 3) in your INI file. This video will get you to the INI file:


    Do you know the...
  20. Re: DIY CNC Mill - Playing around with the thought

    1. How much power do you have to drive this machine? You're headed in the direction of needing a dedicated 3 phase circuit.

    2. The torque you need depends on how much weight you want to move and...
  21. Re: New Guy here- I’m trying to decide on buying a 770M or go a different direction?

    What are your tolerances? Material type? Part size? How quickly do you need your parts made?
  22. Replies

    Re: iso20 vs TTS

    Cylinders with the required force are ridiculously expensive, but it's a simple project to do yourself. SMC's VBA11A pneumatic intensifier is another option for $275.
  23. Re: G0704 AW Vs. B Series Spindle Bearings

    They have the same load rating, so I can't see any reason not to try it.
  24. Re: 6-axis Horizontal Machining Center for Education

    It eliminate the need for a 12" extension on your ratcheting wrench and remove the motor that would be occupying the space your wrench needs to be in.
  25. Re: Redesigned Y-Axis Carriage with Rotary Table

    No, not the nut mounts. The flanges on the nuts in the red circles should be where the blue circle is.

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