Answers to the Chapter 4 Case Study Questions
Case 4-1.
1 As wheel Cis rotated clockwise, the motion of pin Dis circular, clocks, motion abou the center of
the whee
2. As wher Cis rotated cocos, the motion of pis Ps oscillating, slong an ar, centered about the
Joint onthe tapped sing ik
3. As cl Cs rated clockwise, be malen of pie K is osclating tension since item Us
ensraned to siding en ie fame
4, Turing he hand wheel wl eher as or lower the ped sido. As the lapped slides alse, fr
Je Ihe pl ofp wi be at Hier ee. The pal of ia K ll be pulled tthe le Pin.
(€)
and wil lo tend salt through siii gene placement
5. Tuning the hand-wel will move the osilating motion of slid U, ihr leward or rghiwar. The
range of motion wl az lr, gai.
6, This device ca De ud u rnning ajusment to machines thal require an oil
moon, such asa surface rider.
ing hing
ay modo ofthe Bow, coupled wih ton, brings the srew blanks tothe ges.
2. The lat havea head, which cn be ecient rented wth a parallel Rage. As he banks.
approach the fingers the Blanks that happen 10 randomly be aligned with the fingers wil end o ride
spite rack.
3. The rack intermitentes to aed poston, hen Rack down to he Bow
4. A comeing arm E, couples the motion of ik Di ak 8
5. Te mein fink D 1 rece wo pue ansia, and lak B sconstined to pure rotation
‘Therefore, a connecting ak, or a ltd jot, rquie io join the two components.
stack Bis in an elevated prison, the screw blanks are abl lie down towards C.
The tip ofthe fingers contacting the bow isthe less position. A tp os F would serve a an
fée method to preven the Mager ps o dap onthe ota ofthe bow
8. Asscrew blanks are congested inthe outlet wack, and Angers B, item F contacts the heeds ofthe
screw blanks. This cont probibis the al lowering ofthe Ginger.
9. Asscrew blanks av congested inthe ot wack, and agers By em E contacts the heads of the
Screw bans. Ths contac prob the finger B kom dipping int the bow. Therfre no other
Banks attempt eter he Gages
10. This device ia eer track, hat awonaticlly stos feeding srew blanks when the out ack Is
jammed.
11, Tis device must be even by a mechanis ha can compensat or a shorter displacement required
when the ack Is cese, À sideral mechanism, coupled wit a spring is ne opt.
Case 43.
12. BarB and ab, i rested to roma asian
3. Te op OF € can ony move borzotlly andthe boto can any move vertical. Sos cylinder
Lis shortened, the op ai C moves owar height, andthe Dtm of ink € moves downward
There, ak C moves tothe ight and roues clockwise.
3. Poin K moves othe righ, and douar,
4 Since the top of ink C is contained fom moving vera, andthe botom i constrained om
‘moving horizontal, the boto must be able to move vertically ¡any motion is o ocur Therefore,
plat mus ein lt,
3. ‘The purpose ofthis mechanism iso move table A KR and right. The motion ofthe cylinder is
amplified and the bot kage asias o suppor a load placed on tbl A.
6 Turning he headed ros end moves the "zone of ion of table A, pushing ler ear orto
ep.