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The light metal or plastic case contains the motor on whose prolonged arbor a whose chuck is placed to locate the drillers. Between the chuck and the case an additional hand grip can be mounted which can accommodate a depth stop. Switching on and off is done by a switch above the hand grip which can be adjusted for a short time standing operation. In addition there can be switches to change the number of revolutions according to the type of drilling machine.
Figure 2 - Electrical hand
drilling machine
1 drill, 2 chuck, 3 additional hand grip, 4 case, 5 switch to select the number of revolutions, 6 depth stop, 7 on/off switch, 8 lock switch
The drilling machine should only be connected to a safety wall socket!Damaged cables must not be applied!
The condition of the cable should be checked regularly and the clamp chuck must be kept clean!
These drilling machines are applied to manufacture single vertical round bores for mountings and countersinks at screw holes for mountings or single dowel bits.
Joint features as to construction:
A stable pillar carries in its upper part the driving mechanism with the motor and the gear as well as the operating elements to fix the number of revolutions and to carry out the feed. It is followed by the vertically flexible drill spindle for the accommodation of the drilling tools. Below the pillar there is the machine table where the workpieces can be fastened by different clamping means.
Figure 3 - Pillar drilling
machine
1 case with driving mechanism, 2 feed lever, 3 chuck, 4 pillar, 5 machine table (adjustable), 6 wheel for adjusting the height of the machine table
The clamping devices must guarantee a perfect and firm seat of the tools and the workpieces!Existing eye protecting woods should be adjustable to the different heights of the drilling tools, they must not be removed!
Drill chuck and drill shank should be kept clean. The workpiece support and the clamping devices should be cleaned regularly!
The machine should be lubricated regularly according to the lubrication chart!
When do you apply bench or pillar drilling machines for wood
working?
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What requirements must be met by the clamping devices for the
tools and
workpieces?
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