Tool Selection; Speed Selection; Turning Between Centres; Correct Operating Position - Jet 4224 Gebrauchsanleitung

Fig 4
The machine will stop when you push
the red ON/OFF button (F, Fig 4) or
the remote control ON/OFF button (J).
Turn the knob (G) to the desired RPM.
There are 3 speed ranges offering
"speed" (high range 0-3500 rpm)
"general use" (medium 0-2000 rpm)
"torque" (low range 0-910 rpm).
The RPM Readout (I) shows the
spindel speed.
Use the toggle switch (H) to reverse
the spindle direction.
Engage in the headstock spindle lock
(E) to stop the spindle from turning.
Caution:
Never engage the headstock spindle
lock while the spindle is turning.
6. Machine operation

6.1 Correct operating position

Always support the tool on the tool
rest and guide with the palm of your
hand keeping your fingers closed.
(see Fig. 5 )
Fig 5

6.2 Tool selection

Successful wood turning does not
result from high speeds, but rather,
from the correct use of turning tools.
A perfect and sharp wood turner tool
is a precondition for professional
wood-turning.
Major tools:
Fig 6
Gouge (A, Fig 6), used for rapidly cut
raw wood into round stock, for turning
bowls and plates, for turning beds,
coves and other detail (Fig 7).
Fig 7
Scraper (B, Fig 6), used for diameter
scraping and to reduce ridges.
Skew Chisel (C, Fig 6), used to make
vees, beads, etc. (Fig 8). The bevel of
scew is parallel to the cut.
Fig 8
Parting tool (D, Fig 6), used to cut
directly into the material, or to make a
cut off. Also used for scraping and to
set diameters.
6

6.3 Speed selection:

Use low speeds for roughing and for
large diameter work. If vibrations
occur, stop the machine and correct
the cause.
See speed recommendations.
Speed recommendations
Workpiece General
Roughing
Diameter Cutting
RPM
mm RPM
< 50
1500 3200
50-100 700 1600
100-150
500 1100
150-200
370 800
200-250
300 650
250-300
250 500
300-350
220 450
350-400
180 400

6.4 Turning between centres

With a ruler locate and mark the
centre on each end.
Put a dimple in each end of the shock.
Extremely hard woods may require
kerfs cut into the spur drive end of
stock (see Fig 9).
Fig 9
The spur drive centre locks into the
spindle taper and can be removed
with the knockout rod.
Mount the centred workpiece between
the spur drive centre and the tailstock
mounted live centre.
Turn the tailstock hand wheel until the
live centre well penetrates the
workpiece. Reverse the hand wheel by
one quarter turn and lock the tailstock
spindle.
Finishing
RPM
3200
2500
1600
1200
1000
800
700
600