Search Results - Practical Machinist - Largest Manufacturing Technology Forum on the Web
Close
Login to Your Account

Search:

Type: Posts; User: AlfaGTA

Search: Search took 0.01 seconds.

  1. Scraping to a surface plate is a good...

    Scraping to a surface plate is a good start.....but in reality the gib needs to be scraped for contact to the slide.....
    Sounds like you are making good progress.
    The up side is that you will know...
  2. Rulon should be fitted the same way that you...

    Rulon should be fitted the same way that you would do a hard gib i believe....Except that you drag the scraper rather than push it into the surface.
    Scrape to good contact, relieve the...
  3. When scraping in your gib, first get a good...

    When scraping in your gib, first get a good pattern across the total gib. (Lightly blued)
    Then make 1-2 scraping cycles on the center 1/3 of the gib only.
    This will make the center slightly...
  4. Guess it all depends on how much out of round the...

    Guess it all depends on how much out of round the spacers are....Generally some center displacement should not affect the straightness of the shaft ...Parallel exerts the same force on the long and...
  5. Can be done with a press, Vee blocks and...

    Can be done with a press, Vee blocks and indicators if you are careful.
    If the shaft has been case hardened then its more difficult. Generally you must fracture the case to get the core to deform....
  6. Peter: The question is how exactly are the round...

    Peter:
    The question is how exactly are the round rods used?
    Are they applied by inserting across the width of each end of the space normally occupied by the gib?
    In effect being a thickness...
  7. Peter: Any pictures of the tooling and its use?...

    Peter:
    Any pictures of the tooling and its use?
    Having a bit of trouble visualizing the setup....Think i understand, but a bit foggy, and i am interested in your method.

    Cheers Ross
  8. Well it is difficult to do quality repairs on...

    Well it is difficult to do quality repairs on this stuff without machines....
    Might be a case for networking to find like minded folks close by that one could share/trade shop time with to...
  9. With the original gib in place i carefully...

    With the original gib in place i carefully measured from the original surface to teh tool makers buttons and recorded the value
    ...
  10. Looks to me as a good fit on the existing gib...

    Looks to me as a good fit on the existing gib might do to eliminate your problems. Me, i would still change the friction face to Rulon or Turcite. (they are very similar)
    Advantage will be reduced...
  11. My question is the bronze tight against the real...

    My question is the bronze tight against the real gib....
    Might be possible for the bronze to have stretched a bit and formed sort of a bulge between the screws if it was not bonded.
    That bulge...
  12. Lots of seat time running a first generation FP2....

    Lots of seat time running a first generation FP2. Similar setup on the table having two original gibs....
    Only non factory mods are "One Shot" oil pump, and mechanical spindle brake....
    When...
  13. The early FP2 "X" axis gib arrangement is a...

    The early FP2 "X" axis gib arrangement is a problem IMO....
    Proper adjustment of the two gibs that in effect work in opposition to each other can be difficult to get adjusted.
    Not really sure why...
  14. John: I have used "Rulon 142" for lining slides....

    John:
    I have used "Rulon 142" for lining slides. My local source is "Tri-Star Plastics.

    Rulon 142 | Linear Bearings and Slides | TriStar Plastics

    Rulon was recommended to me by Richard King...
  15. Not sure i totally understand your scenario for...

    Not sure i totally understand your scenario for the failure.
    If i read you correctly, you believe that taper pin that retains the end collar/helical milling attachment drive failed, and that...
  16. Time to carefully remove the long feed (X) gibs...

    Time to carefully remove the long feed (X) gibs again!
    Being that they are fitted with brass wear facing i would examine them closely to see if there is any evidence that things got tight ....
    Look...
  17. Small point regarding the shear pin. Must be...

    Small point regarding the shear pin.
    Must be sure it is installed in the correct direction.
    The head should end up on the outside of the drive collar, and not nested into the larger hole.
    Pin is...
  18. Will defer to those with more current exposure,...

    Will defer to those with more current exposure, but i believe the nylon ring is jive....Not seen that before and does not look like factory to me.
    (not sure i have ever seen plastic bearings used on...
  19. Sorry about your trouble....strange happenings...

    Sorry about your trouble....strange happenings here....
    On the initial problem (tight gibs) thought it very strange that the machine was running fine and when returning from a tea break, that
    the...
  20. Any chance you left the machine running while you...

    Any chance you left the machine running while you were off fetching your spot of tea, perhaps with the "X" axis feed inadvertently engaged...?

    Symptom looks from here that the power feed ran to...
Results 1 to 20 of 20