491,361 active members
10,004 visitors online
Register for free
491,361 active members
Results 1 to 3 of 3
  1. #1

    Citizen L20 crosslide moves when drilling

    We recently acquired 2001 Citizen L20, and I noticed something unusual when programming. When calling out T21-T23 for face drilling, for some reason my Y1 moves in Sync with X2.
    The program is something like this:


    Is it normal for Y1 to move in sync with X2? Is there anyway to program so it doesn't do that?
    I don't have a lot of experience on Citizen Swiss, mostly on Nomuras, and Tsugamis.

    Thanks in advance.

  2. #2
    Join Date
    Apr 2017

    Re: Citizen L20 crosslide moves when drilling

    When you go into G821, your gang slide should escape to a safe position as your sub moves your 20s tool into position. Your gang should park itself with tool 1 over the stock and about 3-5" above the stock. Once your gang is parked in the safe position it should NOT be moving while your 20s tools are working.
    That said, all my experience has been with newer L machines that use G610 instead of G821. Per the Citizen manual, the two modes are the same except that G610 automatically positions your sub in Z (no need for M140). From the handbook: "This (G610) replaces the L51620's G821 command because G610 works deeply with the first T2x00 call to move Z2 in while changing the mode."
    Short answer, no Y1 should not be synced with X2.

  3. #3
    Join Date
    Mar 2015

    Re: Citizen L20 crosslide moves when drilling

    On the L320 the Y1 axis is synced with the X2 axis . This is normal condition on this machine.

Similar Threads

  1. Deep Drilling on Citizen L20
    By chet470 in forum Swiss Lathes
    Replies: 2
    Last Post: 03-02-2018, 12:58 AM
  2. Problem with Series 1: Z+ moves Z+, Z- moves Z+
    By 300sniper in forum Tormach Personal CNC Mill
    Replies: 5
    Last Post: 03-03-2017, 03:18 AM
  3. Replies: 9
    Last Post: 08-06-2014, 10:16 PM
  4. Citizen L-25 inconel 600 drilling
    By thurminator in forum CNC Swiss Screw Machines
    Replies: 1
    Last Post: 12-21-2012, 11:23 PM
  5. Gun Drilling on Citizen Swiss Turn
    By SwissBeast in forum CNC Swiss Screw Machines
    Replies: 6
    Last Post: 12-28-2011, 03:55 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts