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Type: Posts; User: Cabbagestack

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  1. Replies
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    Re: ENCO RF45 Clone CNC Conversion - LinuxCNC

    Shown in 3rd pictur Post# 2:
    STRUTS 100# 16.14" stroke
    McMaster Part# 9416K23

    I'm doing the same build, essentially :cheers:
    Although I chose 75# struts, because I want the struts to assist a...
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    Re: Grizzly G0602 or G0752 NEW MACHINE BUILD ???

    Ummm.. so what's happening with the "build", or is there even a build ??
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    Re: Scrap built cnc/manual surface grinder

    Anndddd ........ ???
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    Re: Yet Another RF45 Build

    Have a link to that 6-spline adapter so I know what you are talking about ?

    *as an aside when I post a quotation I try not to include all the OP's pictures and so forth, only just the essential...
  5. Re: Questions on bearings for Belt Drive Conversion

    Arizonavideo,
    Thanks for all your help! I think what I will do is replace the TRBs with fairly decent quality TRBs of the same type, size. The chinese in my opinion can never be trusted: good...
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    Re: Yet Another RF45 Build

    Well, one more picture....

    You can see here the spline insert (light blue) shown above in post #17, pressed into the spindle drive adapter, pointed to by red arrow...
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    Re: Yet Another RF45 Build

    Now notice the spindle drive adapter in previous post (that has the big Trantorque on it !!).

    I had to find a spline of some sort to fit the spindle's male spline shaft. Metric 6-23-28. Looked...
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    Re: Yet Another RF45 Build

    Well I actually DO have a picture or two.
    Here we have the proposed Belt Drive system sporting a 1.8 Kw servo motor.
    the spindle drive adapter w/ associated mounted double pulley isn't done yet....
  9. Replies
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    Re: Yet Another RF45 Build

    In fact I've never heard of anyone using grease on manual milling machine ways. Heck as an example, the Bridgeports I use over at the University use an automatic oiler with metering units on each way...
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    Re: Yet Another RF45 Build

    Haven't checked this thread for a good 2 months or so: actually a while back I was about to quit posting on my build thread because for a long time it seemed no one stopped by, no one cared, so I was...
  11. Replies
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    Re: ENCO RF45 Clone CNC Conversion - LinuxCNC

    And a shout out to arizonevideo for the belt drive system !! Guys, you might want to look to him if you are thinking of a belt drive system.
  12. Replies
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    Re: ENCO RF45 Clone CNC Conversion - LinuxCNC

    According to what I have found so far DMM Technologis AC servos have a flat speed vs. torque curve:
    .
    https://maxcdn.cnczone.com/images/attach/jpg.gif
    this is for a DMM 750w (that I will use on X...
  13. Re: New Build/PM30-MV Mill/Acorn/DMM DYN4-.75KW X/Y/Z SERVO/1.8KW DMM SERVO SPINDLE

    What are your thoughts on the servo driving the spindle? Suppose you need to run a large face mill or something and need low rpm, how well does the DMM Servo perform at say, 75 rpm vs. 1500 rpm as...
  14. Replies
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    Re: ENCO RF45 Clone CNC Conversion - LinuxCNC

    here's what I have in mind for the spindle drive end of things, for those interested:
    https://www.cnczone.com/forums/attachment.php?attachmentid=415546&stc=1
    The aluminum brackets (3/4 thick),...
  15. Replies
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    Re: ENCO RF45 Clone CNC Conversion - LinuxCNC

    I see what you mean looking at your picture gallery! Since I don't have a opening in the back of the column I'd need to go from underneath, which may turn out to be a MAJOR PITA. So I'm going to give...
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    Re: ENCO RF45 Clone CNC Conversion - LinuxCNC

    Kurt,

    How will you go about replacing the shock ? Going from underneath the mill? I cannot see a way to install new ones unless one goes from the underside of the mill. Thanks!

    (dang system...
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    Re: ENCO RF45 Clone CNC Conversion - LinuxCNC

    Kurt,
    Your build thread is quite inspirational! Nice work!
    Often I delay and delay when I'm unsure about how to go about a certain step, or I'm wrestling with several competing designs in my head....
  18. Re: Hafco (RF-47) CNC mill and lathe conversions - finished

    IIOIOII,

    where did you obtain the collapsible covers for the leadscrew on the lathe? I tried googling looking for that but I get every and any result that has nothing to do with it! Ughhh....
  19. Which SKF bearings did you choose? On my spindle...

    Which SKF bearings did you choose?
    On my spindle that same "dust seal" was threaded like yours but so poorly you could almost spin it off with your hands!
  20. Replies
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    Re: Yet Another RF45 Build

    Thinking more on the X axis brackets, apparently Bridgeport used roll pins, aka spring pins instead of dowel pins. Taiwanese imports apparently use no pins at all, just 4 bolts, such as Jet (see...
  21. Replies
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    Re: Yet Another RF45 Build

    Almost forgot to add that I have to mill about 1/4" off the "arches" on the ends of the table as the ball nut will not pass under it when it comes time for assembly and or disassembly -- Like a...
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    Re: Yet Another RF45 Build

    OK -- so day before Thanksgiving, we have the table now affixed to the Bridgeport table ready to locate the hole features, bolt hole features and capture and record these dimensions as well as the...
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    Re: Yet Another RF45 Build

    Thanks for that tip on the bearing race!

    >> "On the Y slide if you enlarge the little cutaways they cast in for the X end plates you can get a extra inch of travel"

    You mean these at each end?...
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    Re: Yet Another RF45 Build

    So the next problem will be how to accurately locate the X & Y brackets for the ball nuts. I imagine I can install the supports and ball screws and then take measurements from the ball screw to the...
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    Re: Yet Another RF45 Build

    Thanks for the reply. Actually I'm going to try to press out the spindle bearings myself, at least. So I'm off to Horror Freight to get a hydraulic press.

    In other news we are going to drill &...
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    Re: Yet Another RF45 Build

    Well it's nearly time to send out the spindle quill assembly to the machinery rebuild service. I'm going to need bearings such as Nachi 7207CYP4 Abec-7.
    Then I'll need to start working on the the...
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    Yet Another RF45 Build

    I have an Industrial Hobbies mill I inherited which has seen next to no use. So after mulling over the the addition of ball screws and doing something bout the spindle bearings (felt rather gritty...
  28. Re: Oil Grooves on Angle Surface of Dovetails, Mill Saddle

    Sorry that the picture is sideways - I don't know how to turn it right side on my phone and save it. My phone does odd things from time to time.
    I plan on grooving the gib as well, with a chamfered...
  29. As a matter of fact I have done just that on...

    As a matter of fact I have done just that on hopes that the circuit supplying the adjacent flat will also supply the angled face as well. There are drilled passages that connects the grooves in the...
  30. Sticky: Re: GrblGru: Free CAM and 3D-Simulation for mills and lathes

    a guy named HuubBuis (I think on this forum but definitely on github)
    has written an app ( called CNCL) in C# using visual studio 2017.
    He claims that he uses a Stepper on his spindle to do...
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