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MILLING SPEED & FEED CALCULATOR CALCULATOR - INCH
600
3.940
CUTTER DIAMETER INCHES
500
CUTTING SPEED FEET PER MINUTE
100.1
CUTTER DIAMETER MILLIMETERS
152.4
CUTTING SPEED METERS / MINUTE
5
(Z) EFFECTIVE FLUTES
0.0100
FEED RATE INCHES / TOOTH
0.254
FEED RATE / TOOTH
SF M
EQUALS
182.88
METERS MINUTE
58.00
MM
INCHES / EQUALS MINUTE
MILLING SPEED & FEED CALCULATOR CALCULATOR - MET
600
100
CUTTER DIAMETER MILLIMETERS
150
CUTTING SPEED METERS / MINUTE
3.94
CUTTER DIAMETER INCHES
492
CUTTING SPEED FEET PER MINUTE
5
(Z) EFFECTIVE FLUTES
0.254
FEED RATE / TOOTH
0.0100
FEED RATE INCHES / TOOTH
METERS/ EQUALS MINUTE
1968
SF M
58.00
MM
MM/ MINUTE
EQUALS
TURNING SPEED & FEED CALCULATOR - INCH
300
1.0000
PART DIAMETER INCHES
200
CUTTING SPEED FEET PER MINUTE
25.40
PART DIAMETER MILLIMETERS
60.96
CUTTING SPEED METERS/MINUTE
0.005
FEED RATE INCH/REV (IPR)
0.127
FEED RATE MM/REV (MMPR)
0.03
DEPTH OF CUT INCHES (DOC)
0.762
DEPTH OF CUT/MM (DOC)
SFM
EQUALS
91.44
METERS MINUTE
70.00
INCHES / EQUALS MINUTE
TURNING SPEED & FEED CALCULATOR - MET
600
101.60
PART DIAMETER MILLIMETERS
100
CUTTING SPEED METERS/MINUTE
4.0000
PART DIAMETER INCHES
328.1
CUTTING SPEED FEET PER MINUTE
0.10
FEED RATE MM/REV (MMPR)
0.0039
FEED RATE INCHES/REV (IPR)
0.03
DEPTH OF CUT/MM (DOC)
0.0012
DEPTH OF CUT INCHES (DOC)
METERS/ EQUALS MINUTE
1968
SFM
58.00
MM/ MINUTE
EQUALS
to METRIC
485
24.24
RPM
TABLE FEED INCHES / MIN.
615.7
TABLE FEED / MIN.
1473.2
MM / MINUTE
MM
IC to INCH
477
606.4
23.87
2.283
RPM
TABLE FEED / MIN.
MM
TABLE FEED INCHES / MIN.
INCHES/ MINUTE
TO METRIC
764
RPM
1778.00
MM / MINUTE
IC TO INCH
313
RPM
2.283
INCHES/ MINUTE
CIRCLE INTERPOLATION MILLING CAL NOTE: During internal circle interpolations, the outside diameter of a milling cutter advances fa tool. This will produce a thicker chip than the calculated feed rate. (IPT) During external circle i diameter of a milling cutter will advance slower than the centerline of the tool. This will produc calculated feed rate. (IPT) When less than 1/2 of the diameter of the tool is engaged (radial) with be radial chip thinning effects. This calculator solves for both effects. Enter the cutter diameter internal or external circle diameter (diamet er being produced, not starting diameter) and the de The calculator will give you the "adjusted" feed rate (IPT) to maintain the desired chip thickness
INTERNAL APPLICATIONS
0.125
Cutter Diameter
0.750
0.010
Radial Width of Cut (WOC)
0.0050
0.0077
Circle Diameter (after the cut)
Desired Chip Load (IPT)
Adjusted Chip Load (IPT)
NOTE: If the operation is not a full circle interpolation, simply input into the "Circle Diameter" data cell what the theo EXAMPLE: A 1.00 inch diameter end mill cuts an internal 90 degree corner that has a .625 inch radius. The circle diam For ID operations the radius of the cutting tool must always be equal to or smaller than the radius to be interpolated. tool diameter be less than or equal to about 1/3 of the diameter to be interpolated
EXTERNAL APPLICATIONS
1.000
Cutter Diameter
4.000
0.500
Radial Width of Cut (WOC)
0.0050
Circle Diameter (after the cut)
Desired Chip Load (IPT)
0.0063
Adjusted Chip Load (IPT)
NOTE: If the operation is not a full circle interpolation, simply input into the "Circle Diameter" data cell what the theo EXAMPLE: A 1.00 inch diameter end mill cuts a 45 degree corner that has a 4.00 inch radius. The circle diameter is the practical , it is a good idea to have the tool diameter greater than about 1/2 of the radial width of cut on external interpo
CULATOR ster than the centerline of the nterpolations, the outside a thinner chip than the the workpiece, there will also radial width of cut (WOC), the ired chip load per tooth. (IPT) .
retical circle size would be. ter is the radius X 2, or 1.250 inches. henever practical , try to have the
retical circle size would be. radius X 2, or 8.00 inches. Whenever lations.
Radial Chip Thinning Calcula NOTE: For use when less than 1/2 of the diameter of milling cutter is engaged in the width of cu type cutters. The chip thickness produced with less than 1/2 of the diameter in radial contact wi feed per tooth due to radial chip thinning. Enter the "desired chip load" (IPT) into the calculator. "adjusted" feed rate (IPT) to produce the desired chip thickness.
0.0045
0.5000
TOOL DIAMETER
0.5000
RADIAL CUT (
0.0045
DESIRED CHIP LOAD (IPT)
0.0045
ADJUST LOAD
Actual maximum chip thickness if Radial Chip Thinning Calculation is not used.
1.0000
The output from these calculations are correct for linear machining (straight line) applications. During circle interpol where a radius is generated, other factors must be accounted for. Refer to the Circle Interpolat
or (WOC) and for all slotting l be thinner than calculated The calculator will give the
IDTH OF OC)
D CHIP (IPT)
Radial Chip Thinning Factor
tions and other milling applications ion Calculator.
Milling Lead Angle Chip Thinning C Lead approach angles on milling cutters produce a thinner chip than the actual advance per too into the calculator. It will provide the adjusted feed per tooth to obtain the desired chip thickne equal to the cosine of the approach angle.
0.005
Desired Chip Load (IPT)
45
Approach Angle
0.0071
NOTE: Enter the approach angle from "0" degrees. As an example, a tool that cuts a 90 degree square shoulder has a
Common Iscar Tools F90 & E90
0 Degree
E75 & F75
15 Degree
E45 & F45
45 Degree
E30
60 Degree
E60
30 Degree
0.0035
Actual Chip Thickness if Adjustment is not made
alculator th. Enter the desired chip load s. The chip thinning factor is
Adjusted Chip Load (IPT)
"0" degree lead.
THEORETICAL MILLING SIDE WALL FINISHES 3.000
TOOL DIAMETER
NUMBER OF FLUTES
5
75
0.0060
FEED RATE (IPT)
THEORETICAL SURFACE FINISH (μin)
This calculation is for reference purposes only. It applies to indexable insert milling cutters. The values for solid carbide tools will be significantly lower based on tool run out, helix angle and other factors.
2
a .p .r . D
×
250000
t ( in) = R
R t
NOTE: When using the Radial Chip Thinning Calculator, extremely high feed rates can result. These feed rates may produce an unacceptable side wall finish. Use this calculator to estimate the resultant finishes at high feed rates.
CALCULATIONS PAGE COMMON CONVERSIONS & CALCULATIONS ENTER IN WHITE
SFM 450 Cutter Diameter: RPM 950 Cutter Diameter:
RESULTS IN YELLOW
TO
RPM 3438.0
ENTER IN WHITE Down
0.500 TO
SFM 746.1
THREAD HELIX ANGLE Threads Per Inch Thread Diameter 60 0.5 HELIX ANGLE: 0.61 NUMBER OF THREADING PASSES - 60 DEGREE FORMS
Desired Surface Finish (Ra) 32 Corner Radius 0.03101 IPR 0.0050 All Surface Finish calculations are based on 80 degree diamond or trigon inserts. 55 & 35 degree inserts will have rougher Ra values. **FOR TURNING & DRILLING NON-INTERUPTED CUTS** THEORETICAL TOOL LIFE @ 15 MINUTES CUTTING TIME TIME IN CUT (MIN/PART) # PARTS 0.055 273
ACTUAL TIME IN CUT PER INSERT - MILLING TOOL DIAMETER: AVE. WOC: 1 0.5 TIME IN CUT (MIN/PART) MIN/INSERT 0.2500 1 TOOL LIFE / CUTTING SPEED ADJUSTMENTS SFM WILL ACHIEVE: 958 5 MIN/LIFE SFM WILL ACHIEVE: 916 10 MIN/LIFE SFM WILL ACHIEVE: 833 15 MIN/LIFE SFM WILL ACHIEVE: 791 20 MIN/LIFE SFM WILL ACHIEVE: 750 25 MIN/LIFE SFM WILL ACHIEVE: 725 30 MIN/LIFE SFM WILL ACHIEVE: 666 45 MIN/LIFE SFM WILL ACHIEVE: 625 60 MIN/LIFE To Top
(Enter a cutting speed that attains 15 minutes of tool life)
Turning Surface Finishes Enter Information In White Data Cells Data Returned Gives Theoretical Ra Values in Micro Inches - To conver to RMS Multiply by 1.1 - (Ra X 1.1) Calculations Are Based On 80 Degree Insert Geometry - 55 & 35 Degree Inserts Will Give Higher Values
To Find Resulting Ra Insert Corner Radius
0.0150
Tool Feed Rate Inches Per Revolution
0.0060
Resulting Ra
95
Feed Rate Re uired IPR
0.0049
To Find Required Feed Rate (IPR) Ra Finish Re uirement
60
Insert Corner Radius
0.0150
To Top of Page
BALL NOSE & ROUND INSERT CUTTING CALCULATIONS & ADJUSTMENTS
SPEED AND FEED CALCULATIONS ENTER REQUIRED INFORMATION IN WHITE
DESIRED CUTTING SPEED (SFM)
300 0.003 Inches
DESIRED FEED RATE (IPT) NUMBER OF EFFECTIVE FLUTES
2
INSERT OR ENDMILL DIAMETER
1
Inches
DEPTH OF CUT - (DOC)
0.03
Inches
RADIAL CHIP THINNING FACTOR
0.3412
TRUE TOOL DIAMETER
CORRECTED RPM
ADJUSTED FEED RATE (IPT)
CORRECT TABLE FEED (IPM)
0.3412
3,359
0.0088
59.07
ROUND INSERT & BALL NOSE CUTTER SURFACE FINISHES ENTER REQUIRED INFORMATION IN WHITE ****SURFACE FINISHES ARE THEORETICAL AND GIVEN IN Ra VALUES - RMS = Ra x 1.11**** RESULTING SURFACE FINISH IN Ra
