Answer to Question #208089 in Mechanical Engineering for Sanajit

Question #208089

An epicyclic reduction gear has a shaft A fixed to arm B.The arm B has a pin fixed to its outer end and two heard C and E which are rigidly fixed,revolve on this pin. Gear C meshes with annular wheel D and gear E with pinion F.G is the driver pulley and D is kept stationary.The number of teeth are:D=80,C=10,E=24 and F=18.If the pulley G runs at 200r.p .m,find the speed of shaft A.



1
Expert's answer
2021-06-18T07:54:27-0400

Speed ratio

NFND=NFNENCND\frac{N_F}{N_D}=\frac{N_F}{N_E}*\frac{N_C}{N_D}


NFND=TETFTDTC\frac{N_F}{N_D}=\frac{T_E}{T_F}*\frac{T_D}{T_C}


The relative velocity of gears with respect to the arm

NFNarmNDNarm=TETFTDTC\frac{N_F -N_{arm}}{N_D-N_{arm}}=-\frac{T_E}{T_F}*\frac{T_D}{T_C}


200NA0NA=24188010\frac{200 -N_{A}}{0-N_{A}}=-\frac{24}{18}*\frac{80}{10}


200NANA=24188\frac{200 -N_{A}}{N_{A}}=\frac{24}{18}*8


200NA=10.667NA200-N_A=10.667 N_A

NA=17.14rpmN_A=17.14 rpm same direction as gear F


Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be the first!

Leave a comment