Jet Elite 1700 Series, Инструкция по эксплуатации и каталог запасных частей

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1700 Series Lathe
Fig. 17
9.5 APRON CONTROLS
In addition to handwheel traverse the carriage can be
power-operated through controls on the front of the apron.
Lever (A) is moved down for power operation and up for
manual.
The push-pull knob (B) selects power surfacing (cross
feed) when pulled out, sliding feeds are selected when the
knob is pushed right in. The adjacent push pull knob (C)
controls forward or backward feed direction.
Lever (D) is pressed downward to engage the leadscrew
nut for screwcutting. To avoid undue wear, release the nut
except when thread cutting, an interlock within the apron
prevents inadvertent engagement of levers A and D at the
same time.
Note: Do not use headstock lever for reversing
feeds except during left-hand screwcutting; Use
instead, the apron handle (C).
Feed-trip adjustment: A trip mechanism is incorporated
in the apron, enabling saddle and/or cross-slide to be
fed up to fixed stops. Trip loads can be set high or low by
adjustment of the knurled handwheel (F) on the side of the
apron. The apron handwheel may be disengaged from its
gear train during power operation or when thread cutting
by pulling the handwheel outwards to on other spring-ball
detent.
Note: This does not apply when the longitudinal
dial accessory is fitted.
End gear trains diagram
The end gear train should be arranged as in the
diagram shown on the dataplate (G5) to meet threading
requirements.
Feeds:
Sliding feeds per spindle revolution range from 0.0015 to
0.04 inch (0.04mm to 1.0mm).
Surfacing feeds per spindle revolution range from 0.00075
to 0.02 inch (0.02 to 0.5mm).
Threads & Feeds
Whitworth threads:
Kinds / Range
45 Kinds / 2–72 T.P.I.
Metric threads: 39 Kinds / 0.2–14mm
Diametral pitch (D.P.)
worm gear
21 Kinds / 8–44 D.P.
Module pitch (M.P.)
worm gear
18 Kinds / 0.3–3.5 M.P.
Longitudinal feeds
0.04–1.0mm
(0.0015" – 0.04")
Cross feeds
0.02–0.5mm
(0.00075" – 0.02")
Gearbox Selectors
(G1) A,B,C three section selector
(G2) R,S,T three section selector
(G3) 1–8 eight section selector
(G4) W–Z five section selector
(G5) End gear train diagram
Fig. 16
G1
G2
G3
G4
G5