tmt l > f t
0scillatio w0uld be et in h ed Aembly where i wuldaue peii
viation in he dista o the tpeo om te head s vaiao tion would be
of sufficient mgni4d to appear as a und eirable _ ..uation in the ignal
level at he st8t o edig or reo0duìon e0 ee'' 3dler &m .s_ erves
to abob most 0f the startng srin, ad efecively pevnt o miim2 s
the te of oillatioD jut deibed e Reel 3le Pulley and Flhee3'' ,.
provide dd_ itional tabilìty to the ta_pe tenion ytem by m. oothin ou tanm
sients i the torue of the ewin d Moto.
2 BRAKE O.PEBATOM
oo.h bake opaion 3 o pimay impo.ace in maitaii
poper tape tension while sopping the ape .. ie te holda tension , sum
plied by he tailig tab3e moto tor3ue, is lot as oo a Xhe op bu
3on is pressed e mainen&ce of tape tension hen beomes a unio of
brake ogeration e fudamenta l desig onsideation in the brake system
i that the braking for. e actig on the t4Dable from whih the tape i beig
pulled (the trai1ing tale)- in ay of the0 odes of- oer5ation must alway -
exceed the bakiD foe ating oD Xhe tutable aing u the tpe (the lead
ing ntable3 in order to prevet the throwieg o 3ape loop
Refe to the Takep Brahe &sembly s hown i iure 5. One.
ed of the bke band is fied o .the bake houig' Th ohe nd ' nko d
to he bake lever ad i ee o move e the bae leoid 3 den
egized, the bake tesion sping ating on the bake 3eve draws he bake
band agains the bre d4m.
Xhe bake dum is rotatin close (a vieed in ie 153 whe
the bake band i applied., the rition fore will Gause the band to wap
itelf moe tighlp around the brake drum, the lìned ed o the b mog
to the lef Braking oe will be ieased (i. e., he bake is selene
gi2jDg) th- e drum i rotating o4. ter1oise, the pocess i the everse
mere will be_ tende y or the bad to ll away from the dr4m, deeing
he braiDg ore (ie, the brae i elrlieved). e ratio o te bai
oe in one diectio o the b&kìg fore in the ohe i alled the brake di
eetial me bake dierential o0 thi mahie i approximately t'o o0 oe
35o' - 4/i1/55 5
To Next Page
Loading...
