, (. 6.22). , F d2 ,
. 6.22.
F. , . F, Ft N Rf, N , a Rf=fN (f ). R N φ.
Ft=Ftg(ψ+ φ). (6.2)
, . . = arctg f , ( ) . , , , . . ψ = 0.
. 6.23. ψ = 0 |
Rf=fN, ψ = 0 N= F (. 6.23, ), Rf=fF.
Rf=fN. N=N'/cosγ (. 6.23,6), γ (=30 , γ=15 , γ=3 ).
ψ = 0 N' = F,
Rf=fF/cos1=f'F,