LATHE OPERATIONS - OD1645 - LESSON 1/TASK 2
with the mounting surface available.
The basic unit may be mounted either
vertically or horizontally.
(2) Mounting on a Lathe.
(a) The versa-mil is mounted on either the rear or the front of the
lathe carriage. On the front, it may be set on the compound or directly on
the cross-slide. A more permanent and generally more useful mounting is at
the rear of the carriage, where it may be left until it is needed in other
areas within the shop.
The front lathe mounting has the advantage of
requiring very little preparation.
(b) The simplest and the most common mounting is on the compound, in the
For this mounting, an adapter bar, to fit into the
toolpost T-slot is needed. This is preferably a piece of cold rolled steel,
usually 3/8 inch thick and with a width to fit into the T-slot. Two holes
are drilled and tapped in the middle of the bar (see appropriate manual for
size of threads required). If the versa-mil is to be used on more than one
lathe, bars to fit each toolpost T-slot should be made.
Hex head cap screws are the easiest to use for
mounting bolts. If the bolts strike the bottom of the
T-slot before the heads seat on the base plate, cut
off enough of the ends to insure rigid mounting.
(c) The toolpost is removed and the adapter bar inserted in the T-slot.
The cap screws are used in holes in the opposite sides of the base and
inserted in the threaded holes of the adapter bar.
(d) The unit is either mounted in line, or across the compound rest
feed, depending on the direction of the back thrust resulting from the work
As insurance against movement along the T-slot, it is
preferable that the back thrust be across the T-slot.