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4.3.6
Locking table travel. To eliminate the possibility of
inadvertantly moving one feed whilst operating the
other you should lock the table feed not being used.
To lock the longitudinal table tighten the two leaf
screws on the front of the table ( See fig.6-12 ). To
lock the cross feed table tighten the two thumb
screws on the right hand side of the cross feed
table ( See fig.6-10 and fig.7 ).
4.3.7
Longitudinal feed stops. In order to control the
length of cut there are two adjustable stops situated
on the front of the longitudinal table. ( See fig.6-9 ).
These stops should be adjusted in relation to the
central fixed stop. ( See fig.6-17 ). Loosen the
adjustable stops with the 5mm hex key provided.
Slide the stop to the required position and retighten.
4.3.8
Calibrated feed. Each feed wheel has an
adjustable calibration ring.
4.3.9
The calibration rings for the cross feed and
longitudinal feed are marked in increments of
0.05mm. One 360
rotation of each wheel advances
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the bed through a distance of 2.5mm. Each ring has
a thumb screw which allows it to be reset to zero or
any mark required for a specific cut.
4.3.10 The vertical fine feed has a calibration ring marked
in increments of 0.05mm. One 360
wheel will raise or lower the cutter through a
distance of 2.5mm. Move the calibration ring for the purposes of a specific cut using the thumbscrew provided.
4.3.11 Avoid subjecting drills and cutting tools to excessive strain. Do not apply undue force on the handle in order to cut workpiece. Maintain
a controlled cutting speed through the workpiece.
4.3.12 Adjustable Guard. After the workpiece has been fixed in place on the bed, but before switching on, swing the clear plastic guard
( See fig.6-18 ) round so that it is between your line of sight and the workpiece. Adjust the height of the guard using the two black
knurled knobs on the left hand side of the guard.
4.3.13 Forward/reverse switch. Set the direction of spindle rotation before operating the main on/off switch. The forward/reverse switch is
situated on the left hand side of the main on/off switch mounting box ( See fig.1-6 ). The switch has 3 positions. The central position
marked '0' is 'OFF'. By turning the switch to the 'R' position the spindle shaft will run anticlockwise. By turning the switch to the 'F'
position the spindle shaft will run clockwise. If the switch is returned to the central OFF position whilst the motor is running the main
ON/OFF switch automatically cuts off the power. Allow the machine to come to a complete standstill before changing the direction of
rotation.
4.3.14 Main ON/OFF switch with emergency shut off. The main ON/OFF switch arrangement is situated on the left hand side of the head.
( See fig.1-15 ). The switch consists of the conventional green ON button and adjacent red OFF button beneath a latching, yellow, outer
cover which carries a large, red emergency shut off button. To access the start button when the outer cover is latched push the
emergency button upwards in the direction of the arrow to release the cover. Hinge the cover upwards and operate the green start
button. To switch the machine off, lift the cover and press the stop button. Alternatively, hit the emergency button which will automatically
lock the outer cover and operate the OFF button beneath it.
4.4
SETTING UP FOR DRILLING.
4.4.1
Vertical feed lock. Before drilling, ensure that the vertical feed is not locked. The feed lock lever should be loose.( See fig.1-8 )
4.4.2
Engaging rapid drill feed. The rapid drill feed is controlled with the three rods emerging from the hub on the right hand side of the
head. ( See fig.3-1 ) The rapid drill feed will not operate if the vertical fine feed wheel used for milling is still engaged. To make the
rapid drill feed operative loosen the engagement knob mounted on the outside of the drill feed hub. ( See fig.3-1 ) Rotate the hub back
and forth to ensure that the hub springs fully outwards.
4.4.3
Depth stop gauge. The depth stop gauge ( See fig.1-14 ) has a graduated scale allowing the drilling depth to be set. Rotate the
primary nut down to the required depth mark and lock it in place with the secondary nut. Alternatively, wind the drill bit down to the
required depth then rotate the primary nut down to the depth stop on the casting and lock it with the secondary nut.
4.4.4
Mounting the chuck with MT3 arbor. If the milling cutter and arbor are currently mounted, remove them by loosening the arbor bolt
by two turns and giving it a tap with a rubber mallet. The arbor bolt appears at the top of the spindle shaft and can be accessed by
raising the pulley cover ( See fig.2-A ). Ensure that the milling cutter and arbor are supported as they are removed ( Wear protective
gloves.) The drill chuck is a shallow taper fit into the end of the spindle shaft. Insert the chuck arbor into the bottom of the spindle
shaft and retain it with the arbor bolt. Do not over tighten.
4.4.5
Mounting a chuck or drill with an MT2 taper. The spindle shaft has an MT3 internal taper into which both the milling cutter and
the drilling chuck can be directly inserted. The arbors are held in place with the long arbour bolt which is accessible when the top
cover is raised (See Fig.2A). When a smaller MT2 taper is required a conversion arbor can be fitted which is MT3 externally but MT2
internally. When this sleeve is fitted the long arbor bolt cannot be used and should be removed. The arbor will be held in place by the
taper. Insert an appropriate chuck or taper drill. Bring the tip of the drill or chuck to bear on a piece of wood placed onto the table and
exert firm but not excessive downward pressure on the drill to retain it in the taper. To remove the MT2 conversion arbor, wind
the rack sleeve down until the slot in the side of it becomes visible. Insert the punch key into the slot and slide it over the top of the
conversion sleeve. A light blow with a mallet should then dislodge the sleeve. Wear protective gloves and support the sleeve as it
becomes loose.
4.4.6
Attaching the workpiece. The main bed of the machine has 4 inverted 'T' slots in it for fixing the workpiece or any vice/clamping
arrangement used to hold the workpiece. The dimensions of the slots are shown in fig.5 in order to choose appropriate fixings. A 52
piece clamping kit is available as an optional extra. Part No. SM25/52T.
4.4.7
Speed and direction of rotation. Set an appropriate speed for the drilling operation as described in Section 4.2. Before switching on
set the forward/reverse switch to the 'F' position so that the drill bit is turning clockwise. Refer to Section 4.3.13
4.4.8
Switching on. Refer to Section 4.3.14 for the operation of the main ON/OFF switch.
fig. 6
rotation of this
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( Disconnect the machine from the power supply while setting up.)
SM25.V3 - 1 - 27/03/07
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