LATHE OPERATIONS - OD1645 - LESSON 1/TASK 2
gib and gib screws, adjusting the gib to provide a snug fit on the carriage
(d) Make a link from a piece of 1/8 inch steel plate which is the width
of the cross-slide. Its length will be determined by the distance between
the holes on the two slides which were originally provided for attaching the
chip guard. Two holes must be drilled to coincide with the one hole in each
of the slides. The two screws originally holding the guard are now used to
tie the two slides and the link together (refer to to the appropriate manual
for further installation procedures).
(e) The rear slide is moved forward with the cross-slide lead screw to
determine whether the middle of the circular T-slot (or compound mounting
boss) can be brought in line with the lathe spindle center. On the design
of some lathes, the cross-slide is too long to permit this procedure because
of the amount of lead screw travel. In a case such as this, remove part of
the rear slide so that the center of the compound mounting surface may be
brought closer together. Re-machine where needed to provide a seat for the
link and a hole for the link screw.
(f) Install the extra T-slot bolt into the T-slot and mount the basic
unit in position with the faceplate parallel to or at 90 to the lathe axis.
Since the gib of the rear slide will normally be kept tighter than the front
gib, the rear gib may be released when the versa-mil is not being used.
Alignment of the Versa-Mil.
(1) Aligning with the Workpiece.
(a) The circular face plate of the basic unit provides a reference
surface for aligning the spindle of the versa-mil with the machine tools to
which it is attached, or with the workpiece.
(b) To avoid over-size cuts, the cutter must be aligned with the travel
of the carriage, ram, or the cross rail on which it is mounted.
(c) Any pair of the guide posts may be used for referencing since the
posts are square with the spindle and the face plate.