Question

1. A system of four non-coplanar weights is arranged on a shaft (the angles and lengths on the figure are arbitrary). The shaft rotates at 100 rpm. Assume the following data (use any consistent system of units you prefer) e (de 10 70 215 320 link 4.0 5.0 4.5 5.0 2.5 2.5 4.0 3.0 5.0 8.0 9.0 3.0 4 Determine the mR products and angles of the counterweights in correction planes A and B needed to dynamically balance the system. Assume that the correction planes are 10 units apart. For book- keeping purpose, use the table shown below (a) Solve the problem graphically (b) Redraw the two views of the system according to the given data and the solution. m1 m1 m2 m2 mB mB R1 R2 RB R4 RA m3 MA LB link 6 (deg.) mRL 4.0 5.0 4.5 5.0 2.5 2.5 4.0 70 215 320 3.0 5.0 8.0 9.0 3.0 4

Answer 1

0 solutioniven that, m a Shaft tte angles and lenghs n f lauin us an Cnststent system let us Cnid ad a Reteren plane Link | m|R |L |L |MR | mRL 4.0 5.0 D 320 45 370 5 35 5-0 | Q:51 ekl5 | 8 | 12-5 60 67.5 l00 20 Scale ,1mm= ½mRL

By mtastokment 孓0-1110 By masioe ment MBRA=15 3.@nea00 nB ev vicu LD c0d MA 320 m3

100 las t 67.5 A Coupes