Jet JVM-836, Инструкция по эксплуатации и каталог запасных частей

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Note: Due to variables in tool diameter, coatings,
coolant, and materials, no specific spindle speed or
feed rate recommendations are provided. Use
general shop manuals that have data applicable to
the milling and drilling operations being performed;
or contact the supplier of the tooling, coolant, and
material for specific recommendations.
10.5 Draw bar operation; changing
tooling
The drawbar has 7/16”-20 right hand threads and
should be tightened with normal pressure using the
provided wrench. To remove a tool:
1. Lock spindle by turning spindle brake (B,
Figure 6) left or right.
2. Use provided wrench to loosen draw bar two
or three turns (counterclockwise).
3. If collet does not open immediately, tap the top
of draw bar with a soft-faced hammer to
loosen collet from taper.
4. Remove tool from collet.
5. Insert new tool into collet.
6. Tighten draw bar firmly using provided wrench.
The tool is now ready for use.
7. Release spindle brake.
11.0 Adjustments
11.1 Head movement: left and right
Make sure machine base is
secured to floor before repositioning mill head.
The center of gravity can shift enough to cause
machine to tip over, resulting in serious injury
to operator and damage to machine.
1. Loosen four large hex nuts (A, Figure 11) that
secure mill head to ram adapter. One-quarter
(1/4) turn should be sufficient to allow head to
move.
NOTE : For angles greater than 10 degrees,
use your free hand to support mill head,
relieving weight off the brass worm gears.
Doing so will lengthen life of worm gears.
2. Turn worm nut (B, Figure 11) to tilt head left or
right as required. Use scale on ram adapter to
establish angle.
NOTE: The scales on ram adapter and for
head rotation are guides only. Close tolerance
work will require use of a dial indicator to make
sure head is 90° to table in X and Y axes.
Please note the table is fitted to be slightly
higher in front, usually about 0.0005”.
Be sure to apply torque in
two steps using a crossing pattern. Failure
to do so could distort the face of the ram
adapter.
3. Tighten the four hex nuts. Tighten in two steps
using a calibrated torque wrench. Use a
crossing pattern to tighten the nuts. Tighten
initially to 25 foot-pounds.
Figure 11: head movement
4. Before applying final torque, check to make
sure mill head is perpendicular to worktable.
5. Set up a dial indicator in a collet (see Figure
11) and secure using draw bar.
6. Put spindle drive in neutral.
7. Set the dial indicator plunger on the worktable.
Zero indicator.
8. Rotate spindle 180 degrees (when rotating,
raise dial indicator plunger by hand to prevent
it from dropping into table T-slots).
9. Read dial indicator – it should read zero. If not,
loosen the four hex nuts and reposition mill
head.
10. Recheck perpendicularity using dial indicator.
Repeat the above procedure until dial indicator
reads zero in both positions.
11. Tighten the four hex nuts. Tighten in two steps
using a calibrated torque wrench. Use a
crossing pattern to tighten the nuts. Tighten
initially to 25 foot-pounds, then tighten to final
torque of 50 foot-pounds. NOTE: Do not
overtighten, as it may cause binding of quill.
Be sure to apply torque in
two steps using a crossing pattern. Failure
to do so could distort the face of the ram
adapter.