LATHE OPERATIONS - OD1645 - LESSON 1/TASK 2
(e) Mounting on top of the compound rest is usually used for milling on
the top surface of the workpiece and when using either of the grinding heads
and the hi-speed cutting head, the versa-mil is mounted on the front of the
compound rest.
(3) Mounting on the Lathe Cross-Slide.
(a) For work requiring that the basic unit he moved down or below the
lathe center, it is generally necessary to mount the unit directly to the
cross-slide. On most lathes, there is sufficient vertical distance between
the top surface of the compound rest and the lathe center to permit the tool
in the basic unit spindle to move down to the lathe center.
(b) When a workpiece requires the front surface to be machined on a
versa-mil, the compound rest is removed.
The two T-bolts, located in the
circular T-slots of the compound, are used for mounting the unit.
The
diameter of the circular slot is generally greater than the center distance
of the mounting holes. The T-bolts are moved toward the lathe center until
they are spaced to correspond with the side mounting holes.
The unit is
then placed on the cross-slide with the T-bolts protruding through the
mounting holes and secured.
(4) Mounting on the Rear of the Cross-Slide.
(a) The most desirable lathe mounting location for the basic unit is at
the rear of the cross-slide.
Therefore, the basic unit may be left in
position (accurately aligned with the lathe) between jobs. Its position at
the rear does not interfere with the use of the lathe for turning, and it
makes the lathe a combination turning and milling machine. It is able to do
complete shaft and spindle jobs in one handling and set up, with
considerable savings in job time.
(b) To avoid machining a special adapter to mount the basic unit, an
extra lower slide can he procured from the manufacturer.
(c) To install the unit to the rear cross-slide, remove the chip guard
from the rear of the cross-slide. Mount the extra "lower slide" on to the
rear of the cross-slide ways, back-to-back with the one carrying the
compound. Install the extra
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