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    Milling Cutter: Prepared By:-Prof. Varpe N. J

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    Milling cutters have multiple cutting edges that allow for high machining rates and completing machining operations quickly. Common materials for milling cutters include high-speed steel and cemented carbide. Milling cutters come in various types based on factors like tooth construction, relief characteristics, mounting method, direction of rotation, and purpose. Examples of standard milling cutters are plain, side, face, end, angle, T-slot, woodruff key slot, and fly cutters.

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    Milling Cutter: Prepared By:-Prof. Varpe N. J

    Uploaded by

    sample use
    45 views24 pages
    Milling cutters have multiple cutting edges that allow for high machining rates and completing machining operations quickly. Common materials for milling cutters include high-speed steel and cemented carbide. Milling cutters come in various types based on factors like tooth construction, relief characteristics, mounting method, direction of rotation, and purpose. Examples of standard milling cutters are plain, side, face, end, angle, T-slot, woodruff key slot, and fly cutters.

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    Milling cutters have multiple cutting edges that allow for high machining rates and completing machining operations quickly. Common materials for milling cutters include high-speed steel and cemented carbide. Milling cutters come in various types based on factors like tooth construction, relief characteristics, mounting method, direction of rotation, and purpose. Examples of standard milling cutters are plain, side, face, end, angle, T-slot, woodruff key slot, and fly cutters.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    45 views24 pages

    Milling Cutter: Prepared By:-Prof. Varpe N. J

    Uploaded by

    sample use
    Milling cutters have multiple cutting edges that allow for high machining rates and completing machining operations quickly. Common materials for milling cutters include high-speed steel and cemented carbide. Milling cutters come in various types based on factors like tooth construction, relief characteristics, mounting method, direction of rotation, and purpose. Examples of standard milling cutters are plain, side, face, end, angle, T-slot, woodruff key slot, and fly cutters.

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    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    of 24

    MILLING CUTTER

    Prepared By:- Prof. Varpe N. J.


    MILLING CUTTER

    A milling cutter is a special type of cutting tool which has multiple cutting edges.
    There are many advantages of milling cutters compared to single point cutting tool.

    1) High machining
    2) Completes required machining operation in required time.
    NOMENCLATURE OF MILLING CUTTER
    MILLING CUTTER MATERIALS

    High-Speed Steel:-
    - Iron with additives
    - Carbon: hardening agent
    Cutter Characteristics:- - Tungsten and Molybdenum: enable steel to
    - Harder than metal being retain hardness up to red heat
    machined - Chromium: increases toughness and wear
    - Strong enough to resistance
    withstand cutting pressures - Vanadium: increases tensile strength
    - Tough to resist shock - Used for most solid milling cutters
    resulting from contact
    - Resist heat and abrasion
    of cutting
    - Available in various sizes
    Cemented-Carbide :-
    and shapes
    - Higher rates of production (3-10 times faster)
    - Must select proper type of carbide
    - Straight tungsten carbide: cast iron, plastics
    - Tantalum carbide: low/medium-carbon steel
    - Tungsten-titanium carbide:
    high-carbon steel
    MILLING CUTTER ARE OF DIFFERENT TYPES,THEY ARE CLASSIFIED BASED ON
    VARIOUS FACTORS
    1) Based on constructional features of the tooth of milling cutter
    - Solid teeth milling cutter
    - Inserted teeth milling cutter
    - Tipped teeth milling cutter
    2) According to the relief characteristics 
    - Profile relieved milling cutter
    - Form relieved milling cutter
    3) Based on methods used for mounting
    - Arbour type
    - Facing type
    - Shank type
    4) According to the direction of rotation of cutter
    - Right hand rotational milling cutter
    - Left hand rotational milling cutter
    5) According to the direction of helix
    - Parallel or straight teeth milling cutter
    - Right hand helical milling cutter
    - Left hand helical milling cutter
    - Alternate helical milling cutter
    6) According to purpose or use of cutter
    - Standard milling cutter
    - Special milling cutter
    THERE ARE MANY TYPES OF STANDARD MILLING CUTTERS SOME OF THEM
    ARE:-
    1) Plain milling cutter
    - Light duty plain milling cutter
    - Heavy duty plain milling cutter
    - Helical plain milling cutter
    2) Side milling cutter
    - Plain side milling cutter
    - Staggered teeth side milling cutter
    - Half side milling cutter
    - Interlocking side milling cutter
    3) Metal slitting saw
    - Plain metal slitting saw
    - Staggered teeth metal slitting saw
    4) Angle milling cutter
    - Single angle milling cutter
    - Double angle milling cutter
    5) End mill
    - Taper shank end mill
    - Straight shank end mill
    - Shell end mill
    6) T-slot milling cutter 9) Formed cutter
    7) Woodruff key slot milling cutter - Convex milling cutter
    8) Fly cutter - Concave milling cutter
    PLAIN MILLING CUTTER
    - Once widely used
    - Cylinder of high-speed steel with teeth

    cut on periphery
    - Used to produce flat surface
    - Several types
    - Light-duty
    - Light-duty helical
    - Heavy-duty
    - High-helix

    SIDE MILLING CUTTER

    - Comparatively narrow cylindrical milling


    cutters with teeth on each side and on periphery
    - Used for cutting slots and
    for face and straddle milling
    operations
    - Free cutting action at high
    speeds and feeds
    - Suited for milling deep,
    narrow slots
    FACE MILLING CUTTER
    • Generally over 6 in. in diameter
    - Have inserted teeth made of high-speed steel

    head in place by wedging device


    • Most cutting action occurs
    at beveled corners and
    periphery of cutter
    • Makes roughing and
    finishing cuts in one pass
    END MILLING CUTTER

    • Face milling cutters under 6 inch


    • Solid, multiple-tooth
    cutters with teeth on face and periphery
    • Held on stub arbor
    - May be threaded or use
    key in shank to drive cutter
    ANGULAR CUTTERS

    -Teeth neither parallel nor perpendicular to cutting axis


    - Used for milling angular surfaces
    - Grooves, serrations, chamfers and reamer teeth
    - Divided into two groups
    - Single-angle milling cutters
    - Double-angle milling cutters

    - Single-angle - Double-angle
    - Teeth on angular surface - Two intersecting angular surfaces
    - May or may not have teeth on flat with cutting teeth on both
    - 45º or 60º - Equal angles on both side of line
    at right angle to axis
    FORMED CUTTERS
    - Incorporate exact shape of part to be produced
    - Useful for production of small parts
    - Each tooth identical in shape
    - Sharpened by grinding tooth face (may have positive, zero or negative rake)
    - Important to maintain original rake
    - Difficult to sharpen

    TYPES OF FORMED CUTTERS

    Concave Convex Gear Tooth


    METAL-SLITTING SAWS
    -Basically thin plain milling cutters with sides relieved or "dished" to prevent
    rubbing or binding when used
    -Widths from 1/32 to 3/16 in.
    -Operated at approximately 1/4 to 1/8 of feed per tooth used for other cutters
    -Not advisable to key saw to milling arbor
    -Backlash eliminator should be engaged
    T-SLOT CUTTERS

    - Have teeth on periphery and both sides


    - Used for milling the wide groove of a T-slot
    - In order to use them, a vertical groove must first be made with a slotting mill or
    an end mill to provide a clearance for the shank
    - T-slot cutter must be fed carefully.
    T-SLOT MILLING CUTTER
    DOVETAIL CUTTER

    -Similar to single-angle milling cutter with integral shank


    -Used to form sides of dovetail after tongue or groove machined
    -Obtained with 45º, 50º, 55º, or 60º angles
    WOODRUFF KEY SLOT MILLING CUTTER
    WOODRUFF KEY SLOT MILLING CUTTER
    FLY CUTTER
    FLY CUTTER
    THREAD MILLING CUTTER
    VARIOUS MILLING CUTTERS
    SCHEMATIC VIEWS OF UP AND DOWN MILLING

    In conventional milling, the cutter In climb milling, the cutter revolves


    revolves opposite to the direction of in the same direction as the table
    table feed. Therefore the width of feed. The tooth meets the work at
    the chip starts at zero and increases the top of the cut, producing the
    to a maximum at the end of the cut. thickest part of the chip first. In
    This can lead to accelerated tool horizontal applications the resultant
    wear under some conditions. force created by climb milling can act
    Conventional milling may be as a clamping force, acting towards
    advantageous when milling hot the machine table. Normally climb
    rolled steel, surface hardened and milling improves product surface
    steels with a surface scale. finish and increases tool life.
    Cutting motion Cutting motion
    ARBOR

    Fig : Mounting a milling cutter on an arbor for use on a horizontal milling machine.
    ADVANTAGES OF MILLING CUTTER
    1)The inserts rotate as they cut.
    2) Faster cutting speeds allow faster feed rates.
    3) Rotating inserts last longer
    4) Interrupted cuts are no problem
    5) Heat in the chip increases with efficiency
    6) "Roll-Shearing" Eliminates breakout in cast iron parts.
    7) There's less wear and tear on your machinery

    DISADVANTAGES OF MILLING CUTTER

    There are also disadvantages by employing a milling


    cutter.
    1) High cost
    2) High cutting temperatures are generated
    3) High maintenance cost 
    Thank you

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