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6. Set Up anD operation
It is assumed that the operator has some experience of machining practice and therefore these instructions are intended only to
describe the features of the machine. If you have no experience of machining it is recommended that you undertake a training
course or seek advice from an experienced source.
Proceed to Section 6.16 for Setting up for Cutting on the Lathe.
warning! Before operating the drilling/milling machine ensure you are wearing approved safety goggles and gloves to
protect you from swarf and metal particles. If using cutting oil or coolant a face mask may be necessary to avoid breathing
any vapour generated. Ensure that all other safety instructions in chapter 1 are followed carefully.
6.1.
Setting Up for milling. (Disconnect the machine from the power supply whilst setting up.) the machine is supplied
without milling attachments. contact your local sealey dealer for a full range of accessories.
6.2.
mounting the Cutting tool. if the drill chuck and arbor are currently mounted, remove them by the following method. Access the
arbor bolt by pulling off the plastic cap (see fig.4-1) which covers the top of the spindle shaft and place an 8mm spanner
onto the flats at the top of the shaft. insert a rod into the hole in the side of the spindle shaft (see fig.4-4) to prevent it turning and
loosen the arbor bolt by two turns. Give the arbor bolt a sharp tap with a rubber mallet in order to release the arbor from the internal
taper. continue to unscrew the arbor bolt by hand whilst supporting the drill chuck and arbor until they become loose and can be
removed.
6.2.1.
select the cutting tool for the work in hand and the appropriate arbor or collet.
wear protective gloves at all times especially when handling the cutter. introduce the cutter assembly into the spindle sleeve
and hold it in place whilst the arbor bolt is tightened by hand. insert a rod into the hole in the side of the spindle shaft to prevent the
spindle rotating and tighten the arbor bolt with a spanner (do not overtighten).
remove the rod and replace the plastic cap.
6.3.
attaching the workpiece. the workpiece will be mounted to the crossfeed table utilising the 8mm 't' slots provided for the tool rest.
6.4.
Setting and locking the cutter height. once the workpiece and cutter are mounted, the cutter can be lowered to the correct position
to achieve the desired cut. the spindle shaft vertical movement is 30mm. if this does not bring the cutter into the vicinity of the
workpiece the whole head can be moved down the column to achieve the desired cutter position. Adjust cutter and head height as
described below. to ensure accuracy during milling the cutter height setting must then be locked as described below.
6.5.
Setting the head height. the overall height of the head on the column can be altered by using the head vertical feed wheel (see
fig.4-2). to alter the head height first loosen the two socket cap bolts adjacent to the vertical leadscrew (see fig.4-3). use the
handwheel to move the head to the desired height and tighten the socket cap screws to lock the head in position.
6.6.
engaging vertical fine feed. the drilling/milling spindle travel is controlled for milling purposes by the fine feed wheel (see fig.3-14).
to engage the fine feed wheel push the feed selector knob ( see fig.3-8 ) inwards. this action automatically disengages the rapid
spindle feed lever (see fig.3-17). once the spindle/cutting tool has been moved to the correct height it can be locked in this position
by tightening the socket cap bolt on the right hand side of the head (see fig.4-5).
6.7.
Calibrated feed. each feed wheel has an adjustable calibration ring situated on the feed shaft immediately behind the wheel. the
rings can be rotated by hand and set to an adjacent mark in order to execute a cut of a specific depth.
the longitudinal feed ring has 31 divisions to one full rotation of the wheel. one segment represents a movement of 0.05mm.
the cross feed ring has 50 divisions to one full rotation of the wheel. one segment represents a movement of 0.025mm.
the longitudinal feed ring has 36 divisions to one full rotation of the wheel. one segment represents a movement of 0.05mm.
6.8.
main on/off switch with speed control and emergency shut off.
the function switch (see fig.3-13) allows you to select either milling/drilling or cutting on the lathe. the switch has a central off
position. set the switch to milling/drilling.
6.8.1.
select the direction of rotation (forward for milling/drilling) using the forward/off/reverse switch (see fig.3-4).
6.8.2.
connect the machine to the mains power supply. the green power lamp (see fig.3-2) will illuminate.
© Jack sealey limited
fig.4
Original Language Version
sm2503A, sm2503B issue:1 - 21/09/15
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