pole zolte |
dane z zestawu |
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pole dane z tabeli z szafranskiego |
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polce czerwone dane gwintu |
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dowolna wartosc |
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1) |
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B beta |
2 |
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xb |
2 |
xb-wsp bezp |
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obliczenia |
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Q |
60000 |
N |
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lp |
300 |
mm |
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Re |
380000000 |
Pa |
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kr=Re/xb |
190000000 |
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lam kr |
80 |
str 86 zalezy od materiału |
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2) |
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d3 musi być większe niż |
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0.019947298986131 |
m |
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główna tabela poniżej |
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19.9472989861311 |
mm |
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3) |
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war1 |
war2 |
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wybierz dowolna wartość d3 tab str 73 i 74 szafrański |
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d3 |
58.058 |
mm |
patrz -> |
jest ok. |
ok. |
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P skok) |
4 |
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patrz -> | |
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4) |
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D zero |
59 |
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patrz -> | |
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wyboczenie |
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d=D |
65 |
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patrz -> | |
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l=1,3*lp |
390 |
mm |
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lw=Bl |
780 |
mm |
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5) |
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smukłosć |
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i=d3/4 |
14.5145 |
mm |
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i ramie bezwł ramienia śruby |
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lamb=lw/i |
53.7393640841917 |
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6) |
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porównaj |
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poprawić warunek jeżeli dla tetmajera |
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if lamb<10 |
oki nie trzeba liczyć dalej idź do 8 |
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dla stali 60 strona 86 |
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if lamb>10 |
trzeba policzyć dalej wzorem: |
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Eulera |
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wzór tetmajera |
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wzór tetmajera |
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Rw |
716.957719105834 |
Mpa |
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Rw |
314.155844155844 |
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wpisz Rw |
314 |
Mpa |
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xdop |
4 |
4 do 8 |
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xdop |
1 |
od 1,75 do 4 |
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x dop |
4 |
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Rw - wytrzymałość wyboczeniowa |
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7) |
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wynik |
jest ok. |
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A |
2646.02412074 |
mm |
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x=Rw*A/Q |
13.8475262318727 |
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8) |
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ds. |
62 |
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samohamowność |
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pomoc |
0.020546537908363 |
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zazwyczaj ok. Trapezowy niesymetryczny |
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j gamma |
1.1770642878244 |
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j > ro ? |
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ro |
5.7 |
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0,1 cos 3= tg ro |
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strona 65 |
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