LATHE OPERATIONS - OD1645 - LESSON 1/TASK 1
FIGURE 1.
BENCH-TYPE ENGINE LATHE.
(3) Floor-Mounted Engine Lathe. The floor-mounted engine lathe (figure 2
on the following page) or pedestal-type engine lathe, is inherently more
rigid than the bench-type lathe and may have a swing as great as 16 or 20
inches and a bed length as great as 12 feet, with 105 inches between
centers.
The drive motor is located in the pedestal beneath the lathe
headstock.
A tension release mechanism for loosening the drive belt is
usually provided so that the drive belt may be quickly changed to different
pulley combinations for speed changes. The headstock spindle is back-geared
to provide slow spindle speeds, and a quick-change gearbox for controlling
the lead screw is installed on all currently manufactured floor-mounted
lathes.
The floor-mounted engine lathe usually has a power-operated
crossfeed mechanism.
(4) Toolroom Lathe.
The toolroom lathe is an engine lathe equipped with
more precision accessories and built to greater standards of accuracy than
standard engine lathes. It may be either floor-mounted or a bench-mounted.
The toolroom-type lathe is usually supplied with a very
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