Technical Information - · PDF fileThe above information is based on JIS B 0601-2001....

Click here to load reader

  • date post

    20-Mar-2018
  • Category

    Documents

  • view

    247
  • download

    3

Embed Size (px)

Transcript of Technical Information - · PDF fileThe above information is based on JIS B 0601-2001....

  • RTe

    chni

    cal

    Info

    rmat

    ion

    DmnVc=

    R1

    Technical Information

    R1~R46

    Parts Compatibility of Lever Lock Toolholders R46

    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 Grades Cross Reference Table R16Molded Chipbreaker Cross Reference Table R22Milling Insert Description Cross Reference Table R24

    Terms and Angles of Turning Toolholder R26Terms and Angles of Milling Cutter R27Terms of Solid End Mill R28Terms of Solid Drill R29

    Cutting Edges Figuration and Countermeasures R30Turning R31Milling R32Drilling R33

    Basic Formulas (Turning) R34Basic Formulas (Milling) R36Basic Formulas (Drilling) R37

    Tooling Example R38Automatic Lathe List by Manufacturer R40List of Instruments and Applicable Small Tools and Toolholders R45

    Terms and Angles of Toolholder R26~R29

    Trouble shooting R30~R33

    Various Cross Reference Tables R16~R25

    General Information R2~R15

    Basic Formulas R34~R37

    Tooling Examples of Small Tools R38~R45

    Dmn1,000

    Vc=

  • R

    Tech

    nica

    l In

    form

    atio

    n

    DmnVc=

    SI Unit Conversion Table / Cutting Symbol

    SI Derived Units Conversion Chart (Bold lined units are the ones by SI Derived Unit.) (Extracted from JIS Handbook Iron & Steel)

    ForceN kgf dyn

    1 1.019 7210-1 1105

    9.806 65 1 9.806 65105

    110-5 1.019 7210-6 1

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

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

    1 110-6 1.019 7210-7 1.019 7210-5 1.019 7210-1

    1106 1 1.019 7210-1 1.019 7210 1.019 72105

    9.806 65106 9.806 65 1 1102 1106

    9.806 65104 9.806 6510-2 110-2 1 1104

    9.806 65 9.806 6510-6 110-6 110-4 1

    Pressure 1Pa=1N/m2

    Pa kPa MPa bar kgf/cm2

    1 110-3 110-6 110-5 1.019 7210-5

    1103 1 110-3 110-2 1.019 7210-2

    1106 1103 1 110 1.019 7210

    1105 1102 110-1 1 1.019 72

    9.806 65104 9.806 6510 9.806 6510-2 9.806 6510-1 1

    Cutting Symbol Cutting conditions below are indicated by the new symbols listed in 2nd column.1) Turning 3) DrillingCutting Conditions Symbol (Previous Symbol) Unit Cutting Conditions Symbol (Previous Symbol) Unit

    Cutting Speed Vc V m/min Cutting Speed Vc V m/min

    Feed Rate f f mm/rev Feed Speed Vf F mm/min

    Depth of Cut ap d mm Feed Rate f f mm/rev

    Edge Width W W mm Drill Dia. Dc D (Ds) mm

    Workpiece Dia. Dm D mm Required Power Pc Pkw kW

    Required Power Pc Pkw kW Specific Cutting Force kc Ks MPa

    Specific Cutting Force kc Ks MPa Drilling Depth H d mm

    Theoretical Surface Roughness h Rz m Revolution n N min-1

    Corner Radius R mm

    Revolution n N min-1

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

    2) MillingCutting Conditions Symbol (Previous Symbol) Unit

    Cutting Speed Vc V m/min

    Feed Speed Vf F mm/min

    Feed per tooth fz f mm/t

    Feed Rate f f mm/rev

    No. of Inserts Z Z teeth

    Depth of Cut ap d mm

    Width of Cut ae w mm

    Pick feed Pf Pf mm

    Required Power Pc Pkw kW

    Specific Cutting Force kc Ks MPa

    Chip Removal Volume Q Q cm3/min

    Revolution n N min-1

    R2

  • RTe

    chni

    cal

    Info

    rmat

    ion

    DmnVc=

    Theoretical (Geometrical) Surface Roughness Theoretical surface roughness for turning indicates the minimum roughness

    value from the cutting conditions and it is shown by the formula as follows.

    Rz(h)= f8R(r)

    2

    103

    Rz(h)Theoretical Surface RoughnessmFeed Ratemm/rev(r)Corner Radius of Insert mm

    How to Obtain Surface Roughness Values Relationship with Triangle SymbolArithmetical

    Mean RoughnessRa(m)

    Max. Height Roughness

    Rz(m)

    Ten Points Mean Roughness

    RzJIS(m)

    *(Triangle Symbol)

    0.0250.050.10.2

    0.10.20.40.8

    0.10.20.40.8

    0.40.81.6

    1.63.26.3

    1.63.26.3

    3.26.3

    12.525

    12.525

    12.525

    50100

    50100

    * Finishing symbol (Triangle and wave~) was removed from JIS standard in the 1994 Revision.

    How to Indicate(1) When Ra is 1.6m1.6mRa(2) When Rz is 6.3m6.3mRz(3) When RzJIS is 6.3m6.3mRzJIS

    Type Symbol How to Obtain Explanation

    Max

    . Hei

    ght R

    ough

    ness

    Rz

    Rz 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 length (" ") in the direction of the center line of the roughness curve.Note) When calculating Rz, extraordinarily

    high or low threads are considered as damages and excluded from the calculation, and only standard lengths are used.

    RzRpRv

    m

    Rp

    Rz

    Rv

    Ten

    Poi

    nts

    Mea

    n R

    ough

    ness

    RzJIS

    RzJIS is a mean value in micron meter obtained from the distance 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 length " ".

    RzJISYp1Yp2Yp3Yp4Yp5Yv1Yv2Yv3Yv4Yv55

    m

    Yv5

    Yv5Yp1

    Yp2 Yp3 Yp4

    Yv4Yv1 Yv3

    Yv2

    Yp1,Yp2,Yp3,Yp4,Yp5Distance from the mean line to the highest 5 peaks in the range of sampled reference length " "

    Yv1,Yv2,Yv3,Yv4,Yv5Distance from the mean line to the lowest 5 valleys in the range of sampled reference length " "

    Arith

    met

    ical

    Mea

    n R

    ough

    ness

    Ra

    Ra is obtained from the following formula in micron 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 length " ".

    Raf(x)dx1

    0

    X

    Y

    Ra

    m

    Indication in JIS Standard

    Example of Ra Indication Example of Rz Indication

    (1) When indicating the upper limit only

    (when upper limit is 6.3mRa)6.3

    (1) When indicating the upper limit only indicate

    surface roughness following the parameter

    symbol.

    Rz6.3

    (2) When indicating both lower and upper limit

    (when upper limit is 6.3mRa, lower limit is 1.6mRa) 6.31.6 (2) When indicating both lower and upper limit

    indicate surface roughness as (upper limit ~

    lower limit) following the parameter symbol.

    Rz6.3~1.6

    Note: The indications of Ra and Rz are different.

    Caution-Symbols for Surface RoughnessThe 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.

    TypeSymbol of

    JIS B 0601-1994Symbol of

    JIS B 0601-2001

    Max. Height Roughness Ry Rz

    Ten Points Mean Roughness Rz RzJIS

    Arithmetical Mean Roughness Ra Ra

    Surface Roughness (JIS B 0601-2001)

    Rr

    Rz(

    h)

    f

    R3

  • R

    Tech

    nica

    l In

    form

    atio

    n

    DmnVc=

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

    Heat Treatment

    (1) Quenching (Tempering) (2) Normalizing (3) Annealing

    Heat Treatment Method Detail Effect

    Time

    727 C

    600 C

    550 C

    Tem

    pera

    ture

    RapidlyQ

    uenching (1)(2)

    (3)

    Very Slowly

    Slowly

    Slowly

    Annealing Rather Rapidly

    Normalizing

    Quenching (Tempering)

    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)

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

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

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

    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.

    Hardness Expression

    Hardness Reference Standard Example Explanation of Example

    Brinell Hardness JISZ22431992250HB Hardness Value :250, Hardness Symbol :HB

    200~250HB When the hardness has the range

    Vickers Hardness JISZ22441998 640HV Hardness Value :640, Hardness Symbol :HV

    Rockwell Hardness JISZ22451992 60HRC Hardness Value :60, Hardness Symbol :HRC

    Shore Hardness JISZ22461992 50HS Hardness Value :50, Hardness Symbol :HS

    Heat Treatment and Hardness Expression

    R4

  • RTe

    chni

    cal

    Info

    rmat

    ion

    DmnVc=

    Vickers Hardness Conversion ChartV

    icke

    rs H

    ardn

    ess

    (HV

    ) Brinell Hardness10mm Dia. BallLoad: 3,000kgf

    (HB)

    Rockwell Hardness 2)

    Sho

    re H

    ardn

    ess

    (HS

    )

    Tensile Strength MPa(1)

    Sta

    ndar

    d B

    all

    Tungsten Carbide Ball

    A ScaleLoad: 60kgf

    Diamond Point

    (HRA)

    B ScaleLoad: 100kgf

    1.6mm (1/16in) ball

    (HRB)

    C ScaleLoad: 150kgfDiamond

    Point(HRC)

    940920900880860

    840820800780760