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4 .
Transmission systems
26
From fomula 1×Un×
33
Can get
TX=12× U
4.3.2 Module threads
26
From fomula 1×U
×
n
33
Can get
m=6× U
n
4.3.3 Inch threads
26
From fomula 1×U
×
n
33
Can get
n=
4.3.4 Diametric threads
26
From fomula 1×U
×
n
33
Can get
DP=
U
n
4.3.5 Un-standard pitch threads
Joint tooth-typed clutch M1、M2、M3, and link input shaft and leas screw. According to different T values, you can
get teeth numbers of 4 gears and then calculate the threads.
4.4 Calculations of mechanical feeds
4.4.1 Methods of tool post's longitudinal travel
a. if turn inner and outer column surfaces, motion joggles with small gear 83 via feed box, rod screw, apron etc and
rotate. Then apron drives tool post to have the longitudinal feeds.
b．Turning threads, motion goes through feed box, lead screw, and half nut 94 and drives the tool post to have
longitudinal threads turning feeds.
c． Rotate hand wheel on apron, small gear 83 and rack 84 joggles. Hand wheel brings apron to have the longitudinal
travel.
1
40B;CE6
d．Model CE6
2
makes the action of longitudinal travel.
4.4.2 Methods of tool post's cross travel
a．If turning the surfaces, motion that is via feed box and apron drives gears on lower tool post screw 92(or 115), cross
feeds begins.
b．Rotate the handle of lower tool post.
33
×
×Um×U
×U
×U
×T=TX (mm)
b
p
d
26
×U
×U
(mm)
b
d
n
33
×
×Um×U
×U
×U
p
b
d
26
×U
×U
(mm)
b
d
33
×
×Um×U
×U
×U
b
d
p
26
3
(threads/inch)
U
×U
×U
n
b
d
33
×
×Um×U
×Ub×Ud×T＝
p
26
6
(tooth/inch)
×U
×U
b
d
1
1
52B;CE6
66B with rapid travel motor. Start motor and apron which drives tool post
2
2
×T＝mπ
25.4
×T=
n
25.4
×π
DP
4 - 4
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