上海交通大学：《Design & Manufacturing II and Project》课程教学资源（作业）Prob 9-39 to 9-40

DESIGN OF MACHINERY 4th Ed. by ROBERT L NORTON ©McGraw-Hill2008 C-75 -40 J-42 8-20 C-20 HOUSING SHAFT MOTOR FIXED D 35 SHAFT 2 =20 -75 (a) (b) FIGURE P9-7 Problems 9-39 to 9-40 From P.H.Hill and W.P.Rule.(1960).Mechanisms:Analysis and Design *9-39 Figure p9-7a shows a gear train containing both compound-reverted and epicyclic stages. The tooth numbers are indicated in the figure.The motor is driven CCW at 1750 rpm. Find the speeds of shafts 1 and 2. Answers in Appendix F. 19-40 Figure P9-7b shows an epicyclic train used to drive a winch drum.The arm is driven at These problems are suited 250 rpm CCW and gear A,on shaft 2,is fixed to ground.The tooth numbers are indicated to solution using Mathcad. in the figure.Determine the speed and direction of the drum on shaft 1.What is the Matlab,or TKSolver efficiency of this train if the basic gearsets have Eo=0.98? equation solver programs

DESIGN OF MACHINERY 4th Ed. by ROBERT L. NORTON © McGraw-Hill 2008 FIGURE P9-7 Problems 9-39 to 9-40 From P. H. Hill and W. P. Rule. (1960). Mechanisms: Analysis and Design (a) (b) * Answers in Appendix F. † These problems are suited to solution using Mathcad, Matlab, or TKSolver equation solver programs. *†9-39 Figure P9-7a shows a gear train containing both compound-reverted and epicyclic stages. The tooth numbers are indicated in the figure. The motor is driven CCW at 1750 rpm. Find the speeds of shafts 1 and 2. †9-40 Figure P9-7b shows an epicyclic train used to drive a winch drum. The arm is driven at 250 rpm CCW and gear A, on shaft 2, is fixed to ground. The tooth numbers are indicated in the figure. Determine the speed and direction of the drum on shaft 1. What is the efficiency of this train if the basic gearsets have E0 = 0.98?