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  1. #1
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    Oct 2003
    Posts
    153

    Question Tapping w/M32 Control ?s

    Help,

    We have a AJV-35/60 machining center and were wanting to tap (possibly rigid) if the machine is set-up for it(parameters and such).
    We don't have any complete g and m code manuals or parameter lists.

    Does anybody have some sample g-code and possible parameter settings that we could check on our M32 control.

    This is what we get from our cam software.(Below)
    This is just a sample program just to test it on our machine, I can see some obvious concerns such as (S320) and (F32.0)!
    I even tried changing the feed to (10.0ipm) with a speed of (320rpm) for 32tpi pitch.
    The machine will locate and go to feed point and stop, no more motion in Z axis???

    Not sure what the (M49) is for or the (H100)???

    The rest looks like common g-code.
    Is this code for a tapping head or possible rigid?
    I know the (G84) is for rigid(I think)! Spindle forward/reverse rotation.
    I can modify my post to correct some of the code if needed, just need to know correct code format and parameter(s)!

    Thanks:drowning:

    %
    O4444
    (EZ-CAM 9-22-2007)
    (MAZAK AJV 35-60) (EIA/ISO FORMAT)
    (TOOL NO 20 DIA.= 0.5)
    (SEGMENT= TAP)
    N30 T20
    N35 M6
    N40 G80 G90 G54 G49 G00 G17 G40 G98
    N45 G91G28 Z0
    N50 G28 Y0
    N55 G90 G00 X11.7252 Y16.408 S382 T20 M3
    N60 G43 H20 Z0.2
    N65 M49
    N70 G84 R0.2 Z-1.0 F32.0 H100
    N75 X10.4021 Y11.6344
    N80 X8.145 Y7.717
    N85 X5.7064 Y9.5071
    N90 X5.2913 Y6.4198
    N95 X14.2677 Y3.7995
    N100 X15.2017 Y11.6085
    N105 X4.02 Y15.8632
    N110 G80
    N115 G91 G28 Z0
    N120 G28 Y0
    N125 M06
    N130 M30
    %

  2. #2
    Registered
    Join Date
    Mar 2005
    Posts
    988
    Is this a used machine for you guys? The code looks OK except for a few things and I'll go over those:

    Code:
    N65 M49
    M49 is a commanded code to not allow the use of the speed/feed overrides on the control. This is used in case you have a problem or the program is in a state of constant set up for example. Basically, in case the overrides are active, the M49 will ignore the overrides and force the program commanded speed and feed. M48 returns the control to the overrides.

    Code:
    N70 G84 R0.2 Z-1.0 F32.0 H100
    H100: This is a program select for synchronous or asynchronous tapping. With G84, you have two ways of tapping... by Feed or by Pitch. H100 (or any value greater than 0) puts the machine into synchronous mode. Which is why you're not tapping. Your feed of 32.0 is telling the machine that your thread pitch is 32" per revolution. The control is smart enough to know that such a thread/tap doesn't exist. Try changing the feed to .0313 (for a 32 pitch thread) and see if it feeds. If you want to use Feed instead, then change the "H" value to "H0" or remove it from the line. Then @ 320rpm, you can set a feed of 10ipm.

    Also, if your machine parameter is set to synchronous, then the "H" becomes a retract feed override. In otherwords, you can set an "H" value to adjust the speed of the retract from 1-100 of commanded feed. So, at 100, the retract feed/speed is double of the entry speed/feed.

    If I were to guess, this should work for you: For a 32 pitch thread.

    N30 T20
    N35 M6
    N40 G80 G90 G54 G49 G00 G17 G40 G98
    N45 G91G28 Z0
    N50 G28 Y0
    N55 G90 G00 X11.7252 Y16.408 S382 T20 M3
    N60 G43 H20 Z0.2
    N65 M49
    N70 G84 G98 R0.2 Z-1.0 F.0313
    N75 X10.4021 Y11.6344
    N80 X8.145 Y7.717
    N85 X5.7064 Y9.5071
    N90 X5.2913 Y6.4198
    N95 X14.2677 Y3.7995
    N100 X15.2017 Y11.6085
    N105 X4.02 Y15.8632
    N110 G80
    N112 M48
    N115 G91 G28 Z0
    N120 G28 Y0
    N125 M06
    N130 M30


    You may want to check your "OPTIONS" page to make sure you have Synchronous tapping turned on.
    It's just a part..... cutter still goes round and round....

  3. #3
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    Join Date
    Oct 2003
    Posts
    153

    A Big Thanks

    Yes, this is a used machine that was aquired with the purchase of Ryerson Steel (Plastics Division) in Chicago.

    Once it was disassembled moved here and reassembled and some adjustments we can now start programing.

    This was just one of the hurdles we have encountered so far!
    But this was some great info, that would have taken me days to try and find through internet searches, phone calls etc.

    This is what I like about this forum and group of PROFESSIONALS and NOVICES alike that can get and share a vast variety of knowledege!!!

    Thanks alot, this is very useful info!!!

  4. #4
    Registered
    Join Date
    Dec 2006
    Posts
    95
    Why don't you do the programming for the tap cycle in Mazatrol then call up you G-code program as a subprogram. The Mazatrol side would be faster and easier?

  5. #5
    Registered
    Join Date
    Jun 2007
    Posts
    43

    M32 Tapping

    With the M32 control, tapping cycles, we have, on occasions, had weird spindle drive alarms on new programs, when proving out. Do not assume that the system will gear change to match spindle speed to feed rate. It would seem the system calculates as per the gear you are currently in. 99% of the time, no problem, the 1%, oddball spindle alarms.

    gem

  6. #6
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    Join Date
    Dec 2009
    Posts
    14

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