SGS-Tools - Каталог для Европейских стран - 2014 EN

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                                               SGS Reference Information

DIAMETER  ISO H6 SPECIFICATIONS    –
                    +
  3                             0,006
 > 3–6          0,000            0,008
> 6–10          0,000            0,009
> 10–18         0,000            0,011
> 18–25         0,000            0,013
                0,000

                                         MACHINING FORMULAS

                                           METRIC FORMULAS

m/min = (3.14 x cutting diameter x rpm) / 1000
rpm = (1000 x m / min) / (3.14 x cutting diameter)
feed (mm per tooth) = millimeters per minute / (number of teeth x rpm)
feed (mm/minute) = feed per tooth x number of teeth x rpm
feed (mm/minute) = mmr x rpm
feed (mm per revolution) = mmr / rpm
cusp height* = (tool diameter / 2) – (tool diameter2 – pitch2) / 4
pitch = 4 x (cusp height x tool diameter) – 4 x (cusp height2)
mrr – milling – (cm3/min) = (width of cut x depth of cut x mm/min) / 1000
cutting time – drilling – (minutes) = length / mm/min

sfm       surface feet per minute
rpm       revolutions per minute
ipm       feed rate in inches per minutes
ipr       inches per revolution
mmr       millimeters per revolution
mm/min    feed rate in millimeters per minute
mrr       material removal rate
*         on flat surface

                                                                                         GENERAL FORMULAS

coolant pressure: 1 Bar = 14.5 Pounds per Square Inch (PSI)
calculation of coolant pressure: Pounds Per Square Inch (PSI) = (Horsepower of Pump x 1.460) / Gallons per Minute (GPM)
1 Liter = 0.254 Gallons
metric tap drill sizes = major diameter – (1.082 x pitch x % of thread)
metric thread forming drill size: maximum diameter = basic major diameter – (.375 x pitch)
metric thread forming drill size: minimum diameter = basic major diameter – (.500 x pitch)

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