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    Notching

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    k.prasad
    Notching is a metalworking process that uses a punch press to selectively cut unwanted material from the edges of a workpiece. The punch press cuts away excess material, resulting in a smaller workpiece with a different shape. There are different types of notching like tube notching, end notching, and side notching. A quality notch will only remove material from the outside edges according to a specific pattern and at angles to facilitate further processing of the sheet metal. There are also rules for minimum widths, lengths, distances, and radii for notches.

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    Notching

    Uploaded by

    k.prasad
    84 views2 pages
    Notching is a metalworking process that uses a punch press to selectively cut unwanted material from the edges of a workpiece. The punch press cuts away excess material, resulting in a smaller workpiece with a different shape. There are different types of notching like tube notching, end notching, and side notching. A quality notch will only remove material from the outside edges according to a specific pattern and at angles to facilitate further processing of the sheet metal. There are also rules for minimum widths, lengths, distances, and radii for notches.

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    Notching is a metalworking process that uses a punch press to selectively cut unwanted material from the edges of a workpiece. The punch press cuts away excess material, resulting in a smaller workpiece with a different shape. There are different types of notching like tube notching, end notching, and side notching. A quality notch will only remove material from the outside edges according to a specific pattern and at angles to facilitate further processing of the sheet metal. There are also rules for minimum widths, lengths, distances, and radii for notches.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    84 views2 pages

    Notching

    Uploaded by

    k.prasad
    Notching is a metalworking process that uses a punch press to selectively cut unwanted material from the edges of a workpiece. The punch press cuts away excess material, resulting in a smaller workpiece with a different shape. There are different types of notching like tube notching, end notching, and side notching. A quality notch will only remove material from the outside edges according to a specific pattern and at angles to facilitate further processing of the sheet metal. There are also rules for minimum widths, lengths, distances, and radii for notches.

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    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 2

    NOTCHING

    Notching is a shearing-related metalworking process that involves the use of a punch press to
    selectively cut unwanted material from the outer edges of a workpiece. After the workpiece is
    secured in place, the punch press cuts away the unwanted material from its outer edges using
    a cutting tool. The end result is a smaller workpiece with a different shape.

    Similarly Semi-notching is the removal of sheet metal material that is not located at the edge
    of the work. Semi-notching is practically identical to punching. The difference is that Semi-
    notching is part of a progressive cutting operation, in the creation of a specific profile.

    Fig. Notched component

    Types of Notching Processes

    There are several different notching processes, each of which uses a different mechanism to
    remove material from the outer edges of a workpiece.
    Tube notching : is used on hollow metal workpieces to remove excess and unwanted
    material, whereas end notching is designed to remove material from one or both ends of a
    hollow metal workpiece.
    side notching: which removes excess material from the side of a sheet so that it can be
    further bent and deformed.
    There are several key characteristics of a quality sheet metal notch that you need to
    understand:

    1) Exterior Cut – A correctly produced notch will be taken only from the outside edges of
    the primary workpiece. This is accomplished by shearing, cutting, or punching the metal.
    2) Angled Notch – Typically, notching is performed at specific angles so as to promote the
    ability to work the sheet metal. The reason that the angle is so important is that you will
    likely later use this sheet metal as part of another process.

    3) Follows Patterns – Finally, a quality notch will be made according to the exact pattern
    required for the next step in the process. The primary worker will need to follow the exact
    pattern as laid out before them in order to make the notching process successful.

    Rules for Notching operation:

     The minimum width is equal to the material thickness or 1.00 mm (0.04 inch),
    whichever is greater.
     Recommended corner radius for notches should be 0.5 * t.
     The maximum length for a straight/radius end notch is equal to five times the
    width.
     The maximum length for a V notch is equal to two times the width.
     The minimum distance between a hole and the edge of a notch is directly
    proportional to the size/shape of the hole and the material thickness.
     The minimum distance from a notch to a bend in a parallel plane is eight times the
    material thickness plus the radius of the bend.
     The minimum distance from a notch to a bend in a perpendicular plane is three
    times the material thickness plus the radius of the bend.
     The minimum distance beyond the bend on the side edge is equal to the thickness
    of the material plus the bend radius, or two times the material thickness, whichever
    is greater.

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