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Data of a steel spur pinion to transmit power to rotate at 1250 rev/min made of AISI 4340 Q&T at 540C material with a

  

Data of a steel spur pinion to transmit power to rotate at 1250 rev/min made of AISI 4340 Q&T at 540C material with a 20 full-depth milled profile is given in Table 1. The pinion and gear have identical material. Final finishing process for the surface of teeth is machined. The mechanical properties of material see in table on appendices. [Data satu gigi kisar pinan taji untuk menghantar kuasa untuk berputar pada 1250 putaran/min dibuat dari bahan AISI 4340 Q&T pada 540C dengan susuk taji 20 berkedalaman penuh diberikan dalam Jadual 1. Pinan dan gear mempunyai bahan yang sama. Proses penghalusan akhir permukaan gigi adalah dimesinkan. Sifat mekanikal ditunjukkan dalam jadual pada lampiran.] Brinell hardness, HB [Kekerasan Brinell.] Number of teeth for pinion, Np [Jumlah gigi pinan.] Number of teeth for gear, NG [Jumlah gigi gear.] Module, m [Modul.] Table 1 [Jadual 1] Face width, F [Kelebaran muka.] Design factor, nd [Faktor reka bentuk.] = Loading, temperature and reliability factors, ke kd = ke [Faktor-faktor beban, suhu dan kebolehharapan.] Miscellaneous-effects factor for Gerber criterion, kj [Faktor kesan pelbagai bagi kriteria Gerber.] Stress concentration factor, K [Faktor penumpuan tegasan.] Notch sensitivity factor, q [Faktor kepekaan takuk.] Modulus elasticity, Ep= EG [Modulus keanjalan.] Poisson's ratio, vp= VG [Nisbah Poisson.] 370 14 34 6 mm 75 mm 1.3 1 1.66 1.68 0.90 207 GPa 0.292 1170 MR .3/- SULIT -3- (ENT 334) (i) If pinion is imposed to bending, determine the transmitted load and power requirement for the gearset design in Table 1. [Jika pinan tersebut dikenakan lenturan, tentukan beban yang dihantar dan keperluan kuasa untuk reka bentuk set gear dalam Jadual 1.] (ii) If pinion is imposed to wear fatigue, determine the transmitted load and power requirement for the gearset design in Table 1. [Jika pinan tersebut dikenakan kelesuan haus, tentukan beban yang dihantar dan keperluan kuasa untuk reka bentuk set gear dalam Jadual 1.]

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