Southbend 16" x 60" Lathe 440V w/ Dro sb1015f - Manual (Page 46)

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For Machines Mfg. Since 7/09 EVS Toolroom Lathes O P E R A T I O N
2. Rotate the compound to the desired angle,
as indicated by the scale at the base, then
retighten the two hex nuts.
— If setting up to cut external right-hand
inch or metric threads, or left-hand
internal threads for the first time, set
the compound so its travel is perfectly
parallel with the cross slide. Using a
protractor, rotate the compound 29.5°
counterclockwise and mark the new
location on the compound slide. This
mark will be the quick reference point
for setting the offset angle. To mark for
internal right-hand threads, or left-hand
external threads, repeat this process, but
rotate the compound 29.5° clockwise and
mark the cross slide accordingly.
Figure 71. Compound slide set at an angle.
Hex Nut
Compound
Slide
The compound slide handwheel has an indirect-
read graduated scale. This means that the
distance shown on the scale represents the
actual distance the tool moves, which will remove
twice as much material from the diameter of the
workpiece. The base of the compound slide has
another graduated scale used for setting the tool
to a specific angle.
To set the compound slide at a certain angle:
1. Loosen the two hex nuts at the base of the
compound slide (1 of 2 shown in Figure 71).
Compound Slide
The four-way tool post is mounted on top of the
compound slide and allows a maximum of four
tools to be loaded simultaneously.
The four-way tool post allows for quick indexing
to different tools, which is accomplished by
loosening the top handle, rotating the tool post
to the desired position, then re-tightening the
handle to lock the tool into position.
Tool Needed Qty
Tool Post T-Wrench ............................................... 1
To load the tool post:
1. Choose the desired cutting tool.
2. Loosen the tool post bolts so that the cutting
tool can fit underneath them.
Note: If necessary, place one steel shim
underneath the cutting tool so the cutting tip
is properly aligned with the workpiece. The
shim should be as long and as wide as the
cutting tool to properly support it.
Four-Way Tool Post
3. Firmly secure the cutting tool with at least
two tool post bolts (Figure 72).
Figure 72. Example of 4-way tool post.
Top
Handle
Tool Post Bolts
Cutting Tool
Over-extending a cutting tool from the tool
post will increase the risk of it breaking during
operation, which may cause metal pieces to
be thrown at the operator or bystanders with
great force. Only extend a cutting tool 2.5
times the width of its cross-section or less
(i.e., 2.5 x 0.5" = 1.25").