Controls; Spindle Speed Selection; Setup And Adjustments; Changing Spindle Speeds - Promac JMDT-764016 Bedienungsanleitung

Do not use wire wheels or grinding
wheels on this machine.
Never cut magnesium-
high danger to fire!
Measurements and adjustments may
be carried out when the machine is at a
standstill only.
In case of danger push the
emergency stop button.

6.1 Controls

Fig 2
A....X-axis handwheel
B....Y-axis handwheel
C....X-axis adjustable stop
D....X-axis slide lock
E....Y-axis slide lock
J
H
F
Fig 3
F.... Drill depth stop adjustment knob
G....Downfeed handles
H.....Fine feed hand wheel
I.....Fine feed engagement knob
J....Fine feed dial
K....Power ON button / Power Light
L....Emergency stop button
M....Power OFF button
N....Quill lock handle
O....Drilling / Tapping Switch
P....Foward button
Q....Reverse button
R....Motor
S....Dual Speed Switch
T....Draw bar cover
U....Head tilting lock nuts
V.... Z-axis slide lock
6.2 Spindle speeds selection
The correct spindle speed depends on
the type of machining, the cutting
G diameter, the material to be machined
and the cutting tool.
These are recommended max. speeds
for a 10mm high speed steel (HSS) tool
(e.g. drill bit).
Aluminium, brass
I
Cast iron
Mild steel
High carbon steel
Stainless steel
If a carbide (HM) tool is used about 5
times higher speeds can be chosen.
Generally speaking, the larger in
relation the cutting diameter, the
smaller the possible RPM.
For example:
Milling mild steel with an end mill of
20mm allows a speed of
Fig 4
1500 RPM
1000 RPM
800 RPM
600 RPM
300 RPM
400 RPM max.
2000 RPM max. with carbide tool

7. Setup and adjustments

Warning:
Setup and adjustment work may only
be carried out after the machine is
protected against accidental starting.
Press emergency stop button!

7.1 Changing spindle speeds

Speeds may only be changed at
complete spindle standstill.
WARNING:
Changing speeds during spindle or
motor rotation will damage the
gears.
Refer to the speed chart whenever
changing speeds.

7.2 Arbor replacement

Remove the draw bar cover (T, Fig 4).
Select the lowest spindle speed to keep
the spindle from turning.
Loosen the drawbar with a wrench.
Loosen the drawbar 2 to max 3 full
turns.
Tap the drawbar head with a rubber
mallet to dislodge the tool taper.

7.3 Adjusting the Depth Stop

To drill multiple holes at the same
preset depth, use the depth stop:
Turn the knob of depth stop(F, Fig 3) to
move to the desired position.

7.4 Engaging the Fine Feed Wheel

To activate the fine feed hand wheel
tighten the engagement knob (I, Fig 3).

7.5 Return Spring Adjustment

The return spring is adjusted at the
factory and should not need further
adjustment. If adjustment is necessary:
Loosen knob (X, Fig. 5) approximately
6mm.
Do not remove the spring cover (Y).
with HSS tool