spindle orientation on siemens 840d


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Thread: spindle orientation on siemens 840d

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    Default spindle orientation on siemens 840d

    i have a machine with a siemens 840d controller and was wondering if there is any step by step documation for orietating the spindle for tool changes. the spindle has just been rebuilt, but the machine no longer knows where to orientate the spindle for a tool change. any help would be greatly appreciated.
    thanks

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    Default

    could you be a bit more clear?

    does the machine know the ref. point? or do you need to adjust the ref. point.
    post a pic of the machine. talks easier.



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    Default re

    its a eumach machine, it knows the reference point for the "z" axis if that is what you mean. i need to get the spindle orientation right for the tool pick up. similar to typing "m6" command.



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    Default Re: spindle orientation on siemens 840d

    Dear all
    I know its a lot of time since the port was uploaded,
    But i´m having the same isue, a DMU 50 840d sl after its spindle was rebuilt,
    change the position of the ref for the spindle, so it cant make tool changes,
    I tried changing the M19 43240 parameter it changes just when you put m19 but for spos like in tool changes,
    it doesnt keep the position, I want to know how do you fix the problem.
    Thanks in advance



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    Default Re: spindle orientation on siemens 840d

    Try this:
    1. Jog Z all the way up (positive direction)
    2. Press Menu Select
    3. Press CNC ISO
    4. Press CNC ISO ?
    5. Press Menu Select
    6. Press Start-Up
    7. Press Machine Data
    8. Press General MD
    Changing these parameters will defeat built in safety’s for TC collision
    BE CAREFUL!!!
    9. Press Find
    10. Type 14512
    11. Press OK
    12. There will be multiple 14512 parameters
    a. 14512 [0] is for arm style tool changers
    b. 14512 [2] is for carrousel tool changers
    13. You need to make a change to this parameter
    a. For arm style note current value and change to 0
    b. For carrousel subtract 1 from current value
    14. Press Menu Select
    15. Press Axis MD
    16. Press Axis+ until you see SP in the upper right corner
    17. Press Find
    18. Type 34090
    19. Press OK
    20. Change 34090[0] to a 0
    21. Cycle power to the machine leaving it off for at least 30sec
    22. Now you need to get the tool changer or arm under the spindle
    a. See note below on how to do this
    23. Install a tool holder with retention stud removed into the carrousel or arm
    24. Bring the head down and rotate the spindle until the keys engage
    25. Now rotate the spindle to find the center of the key slot and get perfect alignment
    26. Complete steps 2 - 4
    27. Write down the number that is next to SP (it will be in degrees)
    28. Complete steps 5 - 7
    29. Complete steps 15 - 19
    30. Set 34090 equal to the value you wrote down in step 26
    31. Cycle power to the machine leaving it off for at least 30sec
    32. Jog Z all the way up (positive direction)
    33. Press MDI
    34. Rotate spindle by hand slightly
    35. Type M19
    36. Press Cycle Start (the spindle should rotate and than lock)
    37. Slowly lower the spindle over the tool holder again
    38. The keys should line up perfectly
    39. If they do not than you might need to modify 34090[0] slightly
    40. Jog Z all the way up (positive direction)
    41. Remove the tool holder from the carrousel or arm manually
    42. Now you need to move the carrousel or arm out from under the spindle
    a. Opposite of the notes listed below
    43. Complete steps 2 - 11
    44. There will be multiple 14512 parameters
    a. 14512 [0] for arm style tool changers
    b. 14512 [2] for carrousel tool changers
    45. You need to change this parameter back to what it was before
    a. For arm style change back to original value
    b. For carrousel add 1 to the current value
    46. Cycle power to machine leaving it off for at least 30sec
    47. Try a manual tool change and everything should work perfectly
    To get a Carrousel under the spindle you will use the air solenoids mounted on the side of
    the machine. To keep it under the spindle with out needing to hold it just turn the button
    90 degrees and it will lock.
    To get an arm style under the spindle that is air actuated there are solenoids on the ATC
    that will allow you to manually move the TC around. Find the proper button and press it.
    To get an arm style under the spindle that is electric you will need to unlock the brake on
    the side of the ATC motor and rotate the motor with a wrench to make the arm swing
    around. Just make sure the arm is fully under the spindle when doing this or it might not
    look like it is lining up right.



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spindle orientation on siemens 840d

spindle orientation on siemens 840d

spindle orientation on siemens 840d