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  1. #1
    Krovvax's Avatar
    Krovvax is offline Aluminum
    Join Date
    Mar 2012
    Location
    Quebec, Canada
    Posts
    189

    Default Floating tap holder on lathe?

    well like the title said it. on ours lathe we dont have the option to make ridig tapping so i was wondering if the kind of holder would work great on a lathe like it used to work on the VMC i was working a few year ago. or since the chuck from the lathe (12 inch forged steel bison) would be heavyer and the tension/compresion would not be enought for the lathe "timing" at the bottom of the hole to breka the chuck and reverse it?

    if anyone have any experience with that and dont mind sharing would be nice

    here is the link of the lathe might help you know what kind of lathe im working on.
    YUNNAN CY GROUP CO., LTD

    the second quesiton is if it work on this kind of lathe will tapping Stainless 304/316 with a spiral point tap with coolant work or its not a good cuttnig fluid because we dont realy want to stop spindle/open door/put oil on tap/start the chuck and than tap every single piece we have to do.

  2. #2
    sfriedberg is offline Stainless
    Join Date
    Oct 2010
    Location
    Oregon, USA
    Posts
    1,635

    Default

    If you use a releasing tap holder, you don't have to worry about timing the stop/reverse at all. Example: Hardinge TT or Somma TH or ARTH. There is limited tension and no compression on these tools, so you do have to feed at or very slightly slower than the tap's natural feed.

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