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  1. #1
    Join Date
    Feb 2007
    Posts
    464

    Can anyone help us?

    I'd appreciate it if some one could give us some EDM data.We're going to make some cavities in aluminum, .75x.375, Depth 2.5 inches.
    We are completely new to this.
    Machine is a Hurco EDM.

    We need:
    On Time
    Off Time
    Amp.
    Work time
    Up Time
    Voltage

    to get it done as fast and as accurate as possible.

    Do you have to do a rough run before finishing the hole?

    Thanks in advance.:withstupi
    Stefan Vendin

  2. #2
    Join Date
    Aug 2008
    Posts
    403
    I would rough then semi finish and finish use negitive polarity... is machine cnc/ what type of control...the negitive polarity will burn very fast but will wear trodes fast....

  3. #3
    Join Date
    Feb 2007
    Posts
    464
    Thanks.
    It's a TRM-39, manual in X ,Y and the control is a Futaba.
    Stefan Vendin

  4. #4
    Join Date
    Feb 2007
    Posts
    464
    How about these values?


    On Time-050
    Off Time-015
    Amp.-15.0
    Work time-05
    Up Time-15
    Voltage-80

    It took me 25 min. to get a .5 depth.
    With predrilled holes,16 min.

    Good or Bad?
    Stefan Vendin

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