Question

a pair of involute tooth gears of 20 ° to full depth transmit 18kw, from a turning pinion to 1200 r.p.m. even an output shaft that must rotate at 320 r.p.m + \ - 5%. These elements are part of the transmission of a milling machine. Design the gear and the wheel having as design criteria the effort to flex and bite, if you must guarantee the operation during 5 years of continuous work. The design must have a reliability of 99.9%. Assume that you have a closed commercial unit, a service factor (sf) of 1, and the mounting diameter for the sprocket is the same as an AC electric motor of the specified power and speed.

give geometry of the pinion and wheel, material must be commercial.

data in modular system
 

Answer 1

Pag No. Date Speed d geai (na 3pm Cc Service actorl no Zp 1200 320 And or 20 full degth inuolute teelh geas Assume both gears are macle of plain Carbon steel 40Cg CSut_600N1mm2 ) Pinion isweaber And theteis om facor Y sor 13 tooth is 0.308 Vel. Acior is unat this stageAssumin atinl value-or-pitch- line-vel as stals 3

Date Assume the Eacaraf saie is 2 lEosz And Bhe face width to module salià ie blmo x 1200 x lo X 200メ 309 5.165mm mza 5 430 ma Check fnr Detign 2 1n IMI - 142-0394 4 X 103 Nimm DX 108 x 1200 i 6oxIO3

3tUr 316 787 3065 Cv D 3065 dp D8 f 2 2212 864 42 This degian_ should be m m

Page No. Dato Diamensio pnion s teeth on a Face width Rich Cixcle didpion 432 mm r rn n/ Clearance o 25m) Taoth thickness C 1:5708 m) 3-4 2 4 & mm