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Thread: CNC Punch Help Please?

  1. #1
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    Default CNC Punch Help Please?

    Hi guys,

    On our EUROMAC punch press, When punching a sheet i am always left with faint circle punch marks. This is showing up even after sanding and paint when caught in the light and this is not good enough as i work within a company that specialises in Museum Showcase Manufacture. Does anybody know what these marks are being caused by? And more importantly how to eliminate them? Any advice would be truly appreciated.

    Thanks

  2. #2
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    Default Re: CNC Punch Help Please?

    First off, investigate the occurance. (root cause analysis)

    Where is this impression in relation to your die? What is the size (diameter) of this impression? When do you see it first? ... etc.,
    ..........
    What?
    Where?
    When?
    Who?
    Why?
    How?
    .........
    Or, try the; Man, Material, Machine, and Method Fishbone aproach.

    Either way, you'll need to do some investigating on your end.

  3. #3
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    Default Re: CNC Punch Help Please?

    I used to use duct tape on the kisser button for the punch, sounds stupid but it worked on the stainless we were punching with the Amada and Strippits. Do you have oil on the kisser button? That may cause a ring to form.

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    Default Re: CNC Punch Help Please?

    You should have told Mr Stewart not to buy the cheapest punch he could find.

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