Where Are Bend/Force Tables for Sheet Metal?

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  • arthur brogard
    Member
    Post count: 1
    #13878 |

    If any such thing exists.

    I mean I want to bend 1mm sheet metal to 90 degrees with a bend radius of 2mm. A 4 foot wide piece.

    And I want to build the bender to do it.

    I need to know how much force will be required to make that bend.

    How much force to be exerted on moving the movable arm of the bender.

    How much force will be exerted in at the clamp of the bender dictating how strong it must be.

    Seems to me such information would be handily kept in tables or at least in some hand formula.

    Anyone know of such?

    arthur brogard
    Member
    Post count: 1
    #13894 |

    I have found the excellent page of formulas: http://sheetmetal.me/formulas-and-functions/bend-allowance/

    but it doesn’t cover the case of simply bending sheet metal with a manual bender or folder as they’re sometimes called.

    It covers only press brakes, using dies.

    I enquired about this elsewhere and have been informed such tables/formula do not hold for benders.

    If the truth is otherwise please let me know.

    A drawing of the bender problem I am trying to sort out:

    BENDERSKETCH

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