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Déflexion des barres d'alésage

Déflexion des barres d'alésage, efforts de coupe et puissance nécessaire

These calculations are based upon theoretical values and are only intended for planning purposes. Actual results will vary. No responsibility from Kennametal is assumed.

Conversion of Workpiece Material Rockwell (Optional)
Metric
Inch

Conversion of Workpiece Material Rockwell (Optional)

Skip this step if you already know the Brinell hardness number(HB)
Boring Bar Dimensions

Boring Bar Dimensions

in mm
If bar does not have a coolant hole use 0
in mm
in mm
Boring Bar Material Properties

Boring Bar Material Properties

psi N/mm2
Workpiece

Workpiece

in mm
   
Workpiece
Workpiece "p" Values (hp/in.3/min) for machining conditions: "p" Values (kW/cm3/min) for machining conditions:
Type of material Designation Calculate Hardness Finishing Roughing General Finishing Roughing General
Carbon steel AISI 1018 141 0.70 0.66 0.62 0.03322 0.03094 0.02867
Carbon steel AISI 1045 195 0.74 0.70 0.72 0.03458 0.03140 0.03276
Alloy steel AISI 4140 194 0.79 0.74 0.73 0.03777 0.03322 0.03367
Alloy steel AISI 4340 214 0.76 0.72 0.73 0.03822 0.03322 0.03367
Alloy steel AISI 4140 258 0.85 0.77 0.79 0.04004 0.03504 0.03595
Alloy steel AISI 4142 277 0.84 0.77 0.75 0.04050 0.03504 0.03595
Alloy steel AISI 4340 485 1.31 1.00 1.05 0.05961 0.04687 0.04869
Tool steel AISI H11 205 0.78 0.73 0.76 0.03822 0.03367 0.03504
AISI 316L 147 0.81 0.73 0.73 0.03822 0.03185 0.03322
AISI 410 243 0.81 0.71 0.74 0.03868 0.03367 0.03413
AISI 17-4 PH 294 0.99 0.70 0.72 0.04551 0.03367 0.03458
Gray cast iron SAE G3000 195 0.53 0.48 0.47 0.02730 0.02184 0.02184
Ductile cast iron ASTM 65-45-12 165 0.58 0.55 0.51 0.03003 0.02366 0.02366
Titanium alloy AMS Ti-6Al-4V 287 0.64 0.62 0.62 0.03094 0.02776 0.02867
Nickel alloy Inconel 718 277 1.20 1.01 1.02 1.05961 0.04596 0.04733
Aluminum alloys AMS 2024 139 0.31 0.29 0.30 0.01547 0.01320 0.01365
hp/ln.3/min. kW/cm3/min
Machining Conditions

Machining Conditions

in mm
ipr mm/rev
sfm mm/min
Machine Tool Efficiency Factors
Direct Belt Drive .9
Back Gear Drive .75
Geared Head Drive .7-.8
Oil - Hydraulic Drive .6-.9
Your Results

Your Results

in mm 4
rpm
in. cm 3/min
 
Dynamics of Boring

Dynamics of Boring

lb N
lb N
lb N
in mm
 
Horse Power Calculation

Horse Power Calculation

hp KW
hp KW
ft-lbs Nmm
 
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