15
Whenever you use the scale, as an indicator, to advance the cross-slide or saddle,
ALWAYS use this procedure to align the marks. This is to take into account backlash
and other clearances in the gearing and slides etc.
Continue to turn the handle an amount equivalent to your desired depth of cut.
NOTE: We recommend that for rough cutting, you do not exceed 0.010” as your
depth of cut.
The setup is now complete to begin your cutting operation, but before starting,
check the position of:
a. Power Drive Knob. Ensure it is in the Hand position for manual feed.
b. Forward/OFF/Reverse knob is set to ‘Forward’.
c. The Chuck Guard.....ensure it is fully down
Switch the machine ON as described under ‘Starting Procedure’ and slowly feed
the cutting tool into the work using the Saddle (Manual) Feed Handle.
Proceed until you reach the previously marked line on the work, then retract the
tool one or two complete turns on the Cross-Slide feed handle.
Wind the saddle back to the begining then wind the tool the same number of turns
‘IN’, plus the depth of desired cut, and proceed to cut once more.
NOTE: This describes the procedure for general, rough cutting. For other types of
cuts - finishing, cutting shoulders etc., you should consult a suitable handbook.
B. SIMPLE TURNING WITH POWER FEED
The same basic setup is used as described above.
The rotational speed of the leadscrew, and hence the rate of feed of the tool, is
dependant upon the gear configuration of the gear train. This is factory set for
general turning operations. Kits are available from your CLARKE dealer for screw
cutting.
1.
Taking all precautions previously mentioned, position the cutting tool a short
distance to the right of the workpiece with the appropriate depth of cut set on
the cross-slide.
2.
Select ‘Forward’ on the Forward/OFF/Reverse switch on the main control panel.
Release the Emergency Stop and switch ‘ON’ the Spindle Speed Control knob.
Turn the knob to achieve your desired spindle speed
3.
Turn the Power Drive Control knob hard clockwise, and hold until the clutch
engages.
IMPORTANT: Once the drive is engaged, your left hand should always be free in
order to hit the emergency stop should it become necessary.
4.
Carefully observe the movement of the tool and as it approaches the mark on
the surface, denoting the end of cut, turn the Power Drive Control knob
anticlockwise to disengage the clutch. If a degree of accuracy is required, it is
recommended that you finish the cut by turning the chuck by hand.
NOTE: If you require a shoulder with perfectly clean corners,then you need to use
an appropriately shaped tool.
Summary of Contents for Metalworker CL250M
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