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Naloga 5 (str.102)

Naloga 5 (str.102). PODATKI Rezkalna glava D=130 mm Število zob z=6 Vrtilna hitrost n=6000 vrt/min Hitrost podajanja v p =22 m/min Bočno rezkamo iverno ploščo debeline b=25 mm Debelina odrezanega sloja je a l =7 mm

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Naloga 5 (str.102)

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  1. Naloga 5 (str.102) PODATKI Rezkalna glava D=130 mm Število zob z=6 Vrtilna hitrost n=6000 vrt/min Hitrost podajanja vp=22 m/min Bočno rezkamo iverno ploščo debeline b=25 mm Debelina odrezanega sloja je al=7 mm Izkoristek stroja hmeh=0,75 %

  2. Izračunaj • Fr = ? • Pr = ? • Pmeh = ?

  3. Podajanje na zob • sz=vp/(n*z)=0,61 mm • Sledi srednja debelina odrezka • hs=sz*√(al/d)=0,142 mm • odčitamo specifično rezalno silo ks=55 N/mm2 • Potem računamo silo na 1 zob Fr1=ks*hs*b=195,2 N

  4. Izračun moči • Pr=As*al*b*vp=3529 W (As=ks ) • PAZI vp gre v m/s, ker je W=(N*m)/s • Upoštevam še izkoristek Pmeh =Pr/h • Pmeh= 4705 W

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