Machine Operation; Spindle Speed Selection; Setup And Adjustments; Arbour Replacement - Promac Jmd-2S Bedienungsanleitung

Fig 4
Disconnect the machine from the
power source if not in use (pull mains
plug).
Fuse protection:
The fuse protects the motor and
electronic parts.
The fuse may only be changed when
the machine is disconnected from
power source (pull mains plug).
Fault lamp:
The fault lamp (P, Fig 4) indicates
motor "overload" or "not ready"
condition.

6. Machine operation

Warning:
Setup work may only be carried out
after the machine is protected
against accidental starting.
With pressed emergency stop
button.
Never place your fingers in a position
where they could contact any rotating
tool, chuck or cutting chips.
Remove cutting chips with the aid of
an appropriate chip hook when the
machine is at a standstill only.
Never stop the rotating chuck or tool
with your hands.
Never work without chuck guard.
Secure work piece to the table with
clamps or a vice to prevent rotating
with the drill bit.
When using a vice, always fasten it to
the table.
Check the save clamping of the work
piece, chuck and tools before starting
the machine.
Never do any works "freehand" (hand-
holding the work piece rather than
supporting it on the table).
Support long work pieces with helping
roller stands.
Feed a drill bit into the material with
only enough force to allow the drill bit
to work.
Feeding too slowly may cause burning
of the work piece or tool. Feeding too
quickly may cause the motor to stop
and/or the drill bit to break.
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.
6.1 Spindle speeds selection
The correct spindle speed depends on
the type of machining, the cutting
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
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:
1000 RPM max.
1500 RPM max. with carbide tool
Note:
Choose a low speed for tapping.

7. Setup and adjustments

Warning:
Setup and adjustment work may
only be carried out after the
machine is protected against
accidental starting.
Disconnect from the power source!
6
4

7.1 Arbour replacement

Remove the draw bar cover (A, Fig 1).
Loosen the draw bar.
Loosen the drawbar 2 to max 3 full
turns.
Tap the drawbar head with a rubber
mallet to dislodge the tool taper.

7.2 Engaging the Fine Feed Wheel

To activate the fine feed hand wheel (K,
Fig 2) tighten the engagement knob (D,
Fig 1).

8. Maintenance and inspection

General notes:
Maintenance, cleaning and repair
work may only be carried out after
the machine is protected against
accidental starting.
Disconnect from the power source!
Clean the machine regularly.
Defective safety devices must be
replaced immediately.
2000 RPM
Repair and maintenance work on the
electrical system may only be carried
1500 RPM
out by a qualified electrician.
1000 RPM
1000 RPM

8.1 Weekly Lubrication

800 RPM
DIN 51502 CG ISO VG68
(e.g. BP Maccurat 68, Castrol Magna BD
68, Mobil Vectra 2)
- X/Y/Z-axis lead screw
Apply oil on entire length.
- X/Y/Z-axis hand wheels
Lubricate ball oilers.
- X/Y/Z-axis ways
Lubricate ways on entire length.
- Spindle quill
with HSS tool
Apply oil on entire length.

8.2 Slide adjustments

The X/Y/Z slide way gibs are
adjustable with grub screws.

8.3 Lead screw nut adjustment

The X/Y lead screws (31, 25) are fitted
with adjustable (slotted) lead screw
nuts.