Technical Information - · PDF fileTechnical Information π×Dm×n Vc= ... The...

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Technical Information R1~R42 R1~R42 R1 SI Unit Conversion Table / Cutting Symbol R2 Surface Roughness R3 Heat Treatment and Hardness Expression R4 Vickers Hardness Conversion Chart R5 Material List (JIS) R6 Material Cross Reference Table R7 Insert Cross Reference Table R16 Molded Chipbreaker Cross Reference Table R21 Milling Insert Description Cross Reference Table R22 Cutting Edge Figuration and Countermeasures R24 Turning R25 Milling R26 Drilling R27 Terms and Angles of Turning Toolholder R28 Terms and Angles of Milling Cutter R29 Basic Formulas (Turning) R30 Basic Formulas (Milling / Drilling) R32 Tooling Examples R34 Automatic Lathe List by Manufacturer R36 List of Instruments and Applicable Small Tools and Toolholders R41 Parts Compatibility of Lever Lock Toolholders R42 Terms and Angles of Toolholder R28~R29 Trouble shooting R24~R27 Various Cross Reference Tables R16~R23 General Information R2~R15 Basic Formulas R30~R33 Tooling Examples of Small Tools R34~R41 π×Dm×n Vc=
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Transcript of Technical Information - · PDF fileTechnical Information π×Dm×n Vc= ... The...

  • Technical InformationR1~R42R1~R42

    R1

    SI Unit Conversion Table / Cutting Symbol R2Surface Roughness R3Heat Treatment and Hardness Expression R4Vickers Hardness Conversion Chart R5Material List (JIS) R6Material Cross Reference Table R7

    Insert Cross Reference Table R16Molded Chipbreaker Cross Reference Table R21Milling Insert Description Cross Reference Table R22

    Cutting Edge Figuration and Countermeasures R24Turning R25Milling R26Drilling R27

    Terms and Angles of Turning Toolholder R28Terms and Angles of Milling Cutter R29

    Basic Formulas (Turning) R30Basic Formulas (Milling / Drilling) R32

    Tooling Examples R34Automatic Lathe List by Manufacturer R36List of Instruments and Applicable Small Tools and Toolholders R41

    Parts Compatibility of Lever Lock Toolholders R42

    Terms and Angles of Toolholder R28~R29

    Trouble shooting R24~R27

    Various Cross Reference Tables R16~R23

    General Information R2~R15

    Basic Formulas R30~R33

    Tooling Examples of Small Tools R34~R41

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    SI Derived Units Conversion Chart(Bold lined units are the ones by SI Derived Unit.)

    Force

    Symbols of cutting conditions Cutting conditions below are indicated by the new symbols listed in 2nd column. 1) Turning

    Extracted from JIS Handbook Steel

    N kgf dyn

    1

    9.806 65

    110-5

    1.019 7210-1

    1

    1.019 7210-6

    1105

    9.806 65105

    1

    Stress 1Pa=1N/m2,1MPa=1N/mm2

    1

    1106

    9.806 65106

    9.806 65104

    9.806 65

    110-6

    1

    9.806 65

    9.806 6510-2

    9.806 6510-6

    1.019 7210-7

    1.019 7210-1

    1

    110-2

    110-6

    1.019 7210-5

    1.019 7210

    1102

    1

    110-4

    1.019 7210-1

    1.019 72105

    1106

    1104

    1

    Pa or N/m2 MPa or N/mm2 kgf/mm2 kgf/cm2 kgf/m2

    Pressure 1Pa=1N/m2

    1

    1103

    1106

    1105

    9.806 65104

    110-3

    1

    1103

    1102

    9.806 6510

    110-6

    110-3

    1

    110-1

    9.806 6510-2

    110-5

    110-2

    110

    1

    9.806 6510-1

    1.019 7210-5

    1.019 7210-2

    1.019 7210

    1.019 72

    1

    Pa kPa Mpa bar kgf/cm2

    Note: 'r' is read as 'r epsilon'

    Cutting Condition

    Cutting speed

    Feed rate

    Depth of cut

    Edge width

    Workpiece diameter

    Power required at spindle

    Specific cutting resistance

    Theoretical surface roughness

    Corner radius

    Revolution

    New symbol

    Vc

    f

    ap

    W

    Dm

    Pc

    kc

    h

    r

    n

    (Previous symbol)

    V

    f

    d

    W

    D

    Pkw

    Ks

    Rz

    R

    N

    Unit

    m/min

    mm/rev

    mm

    mm

    mm

    kW

    MPa

    m

    mm

    min-1

    2) Milling

    Cutting Condition

    Cutting speed

    Feed speed

    Feed per tooth

    Feed rate

    Number of inserts

    Depth of cut

    Width of cut

    Pick feed

    Power required at spindle

    Specific cutting resistance

    Metal Removal Rate

    Revolution

    New symbol

    Vc

    Vf

    fz

    f

    Z

    ap

    ae

    Pf

    Pc

    kc

    Q

    n

    (Previous symbol)

    V

    F

    f

    f

    Z

    d

    w

    Pf

    Pkw

    Ks

    Q

    N

    Unit

    m/min

    mm/min

    mm/t

    mm/rev

    teeth

    mm

    mm

    mm

    kW

    MPa

    cm3/min

    min-1

    3) Drilling

    Cutting Condition

    Cutting speed

    Feed speed

    Feed rate

    Drill diameter

    Power required at spindle

    Specific cutting resistance

    Depth of hole

    Revolution

    New symbol

    Vc

    Vf

    f

    Dc

    Pc

    kc

    H

    n

    (Previous symbol)

    V

    F

    f

    D (Ds)

    Pkw

    Ks

    d

    N

    Unit

    m/min

    mm/min

    mm/rev

    mm

    kW

    MPa

    mm

    min-1

    SI Unit Conversion Table / Cutting Symbol

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    Theoretical (Geometrical) Surface Roughness

    How to Obtain Surface Roughness Values

    Theoretical Surface Roughness for Turning indicates the minimumroughness value from the cutting conditions and it is shown by theformula as follows:

    Caution-Symbols for Surface Roughness

    Relationship with Triangle Symbol

    Indication in JIS Standard

    Arithmetical Mean Roughness

    Ra(m)

    0.025 0.05 0.1 0.2

    0.4 0.8 1.6

    3.2 6.3

    12.5 25

    Max. Height Roughness Rz(m)

    0.1 0.2 0.4 0.8

    1.6 3.2 6.3

    12.5 25

    50100

    Ten PointsMean Roughness

    RzJIS(m)

    Note: (Relationship with Triangle)

    3.2 6.3

    25

    50100

    12.5

    0.8 0.4 0.2

    1.6

    0.1

    Note: Finishing symbol (Triangleand wave~) wasremoved from JIS standard in the 1994 Revision.

    How to Indicate

    ExampleWhen Ra is 1.6m1.6mRaWhen Rz is 6.3m6.3mRzWhen RzJIS is 6.3m6.3mRzJIS

    Rz(h) f 8R(r)

    2

    10 3

    Rz(h)Theoretical Surface Roughnessm Feed Ratemm/rev (r)Corner Radius of Insertmm

    The above information is based on JIS B 0601-2001.However, some symbols were revised as shown in the right table in accordance with ISO Standard from JIS B 0601-2001 version.Ten Points Mean Roughness (Rz) was eliminated from 2001 version but it still remains as RzJIS reference, since it was popular in Japan.

    Type

    Max. Height Roughness Ten Points

    Mean Roughness Arithmetical Mean

    Roughness

    Ry

    Rz

    Ra

    Rz

    RzJIS

    Ra

    Symbol of JIS B 0601-1994

    Symbol of JIS B 0601-2001

    Example of Ra Indication

    Note: The indications of Ra and Rz are different.

    When indicating upper limit only Indicatesurface roughness following the parametersymbol.

    When indicating both lower and upper limit Indicate surface roughness as (upper limit ~ lower limit) following the parameter symbol.

    When indicating the upper limit only (when upper limit is 6.3mRa)

    When indicating both lower and upper limit (when upper limit is 6.3mRa, lower limit is 1.6mRa)

    6.3 1.6

    6.3 Rz6.3

    Rz6.3~1.6

    Example of Ry, (Rz) Indication

    Type Symbol

    Rz

    RzJIS

    Ra

    How to Obtain Explanation

    Ry is a mean value in micron meter obtained from the distance of the highest peaks and the lowest valleys within the range of sampled reference lengths () in the direction of the center line of the roughness curve.

    Rz is a mean value in micron meter obtained from the distances of 5 highest peaks (Yp) and the 5 lowest valleys (Yv) measured from the center line of the roughness curve within the range of sampled reference lengths . Yp1,Yp2,Yp3,Yp4,Yp5:

    Distance from the mean line to highest 5 peaks in the range of sampled reference length Yv1,Yv2,Yv3,Yv4,Yv5:Distance from the mean line to the lowest 5 valleys in the range of sampled reference length

    Ra is obtained from the following formula inmicron meter, the roughness curve is expressed by y=f(x), the X-axis is in the direction of the center line and the Y-axis is the vertical magnification of the roughness curve in the range of sampled reference lengths .

    RzRpRv

    RzJIS Yp1Yp2Yp3Yp4Yp5Yv1Yv2Yv3Yv4Yv5 5

    Raf(x)dx1

    0

    m

    Rp

    Ry

    Rv

    m

    Yv5

    Yv5Yp

    1

    Yp2

    Yp3

    Yp4

    Yv4

    Yv1 Yv

    3

    Yv2

    X

    Y

    Ra

    m

    Ten

    Poi

    nts

    Mea

    nR

    ough

    ness

    Max

    . Hei

    ght

    Rou

    ghne

    ssAr

    ithm

    etic

    al M

    ean

    Rou

    ghne

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    Surface Roughness (JIS B 0601-2001)

    Rr

    Rz(

    h)

    f

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    Heat TreatmentOne of the ways to determine the hardness of steel is the heat treatment and it is classified to 3 types.

    Heat Treatment

    Normalizing Quenching (Tempering) Annealing

    Quenching (Tempering)

    Normalizing

    Annealing

    After heating to over 727C, cool rapidly down to 550C in water or oil.

    Quenching makes steel hard because it cools down red-hot steel very rapidly in water or oil, but it may promote internal stress. In order to remove such internal stress, tempering is used.(After cooled down once, reheat it to 200C~600C)

    It miniaturizes the crystals. (Steel is also composed of small cells.) It is used to improve the mechanical character or machinability.

    It miniaturizes the crystals like the process of normalizing, but the crystal size is bigger than that of normalizing.It targets machinability improvement and distortion correction.

    After heating to over 727C, cool down rapidly to 600C and then to normal temperature.

    After heating to over 727C, cool down very slowly to 600C, then to normal temperature.

    Hardness Value

    Hardness

    Brinell Hardness

    Vickers Hardness

    Rockwell Hardness

    Shore Hardness

    JIS Z 22431992250HB

    200~250HB

    640HV

    60HRC

    50HS

    Hardness Value : 250, Hardness Symbol : HB

    When the hardness has the range

    Hardness Value : 640, Hardness Symbol : HV

    Hardness Value : 60, Hardness Symbol : HRC

    Hardness Value : 50, Hardness Symbol : HS

    JIS Z 22441998